Journal articles on the topic 'Lek mass-rearing'

Our studies have shown that additional introduction of feed additive “Elevit” into the rearing gilts’ diet at a dosage of 1.0; 1.5; 2.0% during their breeding from 4 to 8 months allows to increase the gilts’ live weight by 3.9; 7.0; 9.5%, respectively, with average daily gains also increasing in comparison to the control group by 6.4; 11.6; 15.7%. Also, when reaching 8 months, gilts of experimental groups exceeded their peers from the control group in heart mass by 3.2; 4.1; 6.3%; lungs - by 3.7; 4.0; 4.2%; liver - by 5.1; 5.8; 6.2%, respectively. When rearing gilts reached the age of 8 months, a study of their reproductive function was carried out. So, we have established that gilts receiving “Elevit” feed additive together with the diet at a dosage of 1.0; 1.5; 2.0% exceeded their peers from the control group in fertilization indicator by 4.5; 5.4; 5.4%, and multifertility - by 4.3; 6.2; 7.5% respectively. The increase in these indicators led to an increase in the total number of experimental piglets received from rearing sows by 36, 3; 47.1; 48.7% compared to control.

Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), a pest of Asian origin, has been causing severe damage to Italian agriculture. The application of classical biological control by the release of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), an exotic egg parasitoid, appears to be one promising solution. In Italy, releases of T. japonicus in the field were authorized in 2020. In this study, some parameters that could influence the rearing of T. japonicus in insectaries were investigated. A significantly higher production of progeny was observed on host eggs stored at 6 °C (86.5%) compared to −24 °C (48.8%) for up to two months prior to exposure to parasitism. There were no significant differences in progeny production from single females in a vial provided with only one egg mass (83.2%) or 10 females inside a cage with 6 egg masses (83.9%). The exposure of parasitoids to refrigerated (6 °C) egg masses of H. halys for 72 h led to a significantly higher production of progeny (62.1%) compared to shorter exposures for 48 (44.0%) or 24 h (37.1%). A decline in production of progeny by the same female was detected between the first (62.1%) and the second parasitization (41.3%). Adult parasitoids stored at 16 °C for up to 90 days had an 87.1% survival rate, but a significant decrease in progeny production was detected. These parameters could be adjusted when rearing T. japonicus for specific aims such as the production of individuals for field release or colony maintenance.

The advent of novel genetic methods has led to renewed interest in the sterile insect technique (SIT) for management of insect pests, owing to applications in mass rearing and in the production of sterile offspring without use of irradiation. An area-wide management programme for codling moth, Cydia pomonella, has employed the SIT and other management practices over a large area (3395 to 7331 ha) of orchards and neighbouring urban, public, or First Nations lands in British Columbia, Canada, for 25 years. This project is the first to employ the SIT for C. pomonella, and the longest-running application of area-wide techniques for its control, anywhere. It was derived from basic research and applied trials from the 1960s onwards. Many biological challenges were overcome, and lessons learnt, in transferring from small- to large-scale applications of mass rearing and the SIT, with particular regard to Lepidoptera. Research has proven essential to identifying, if not resolving, issues that threaten the implementation and success of any such programme. The major challenges encountered, and the resulting research, are reviewed, as well as future directions. Recommendations are given for application of the SIT as part of any area-wide management programme for C. pomonella.

Mass-rearing of mosquitoes under laboratory conditions is an important part of several new control techniques that rely on the release of males to control mosquito populations. While previous work has investigated the effect of larval density and diet amount on colony productivity, the role of the size of the container in which larval development takes place has been relatively ignored. We investigated the role of container size in shaping life history and how this varied with density and food availability in Aedes aegypti, an important disease vector and target of mass-rearing operations. For each treatment combination, immature development time and survival and adult body size and fecundity were measured, and then combined into a measure of productivity. We additionally investigated how larval aggregation behaviour varied with container size. Container size had important effects on life history traits and overall productivity. In particular, increasing container size intensified density and diet effects on immature development time. Productivity was also impacted by container size when larvae were reared at high densities (1.4 larva/ml). In these treatments, the productivity metric of large containers was estimated to be significantly lower than medium or small containers. Regardless of container size, larvae were more likely to be observed at the outer edges of containers, even when this led to extremely high localized densities. We discuss how container size and larval aggregation responses may alter the balance of energy input and output to shape development and productivity.

The increasing demands on natural resources to provide food and feed has led to increased global initiatives to improve production sustainability and efficiency. The use of insects as an alternate source of protein for human food and production-animal feed is one such avenue gaining attention. With there being a large variety of insect species endemic to each region, there is likely to be an ideal candidate for each specific production system and region. Insects require less land and water than do terrestrial animals, have high feed-conversion efficiency (FCE) and emit low levels of greenhouse gases (GHG). Insect species currently investigated for mass production include black soldier fly larvae (BSFL), mealworms and crickets. In western societies, it is less likely that wide-scale adoption of insects as a food source will occur, although speciality products with ‘hidden’ insects, such as cricket flour, are commercially available. It is likely to be more achievable for insects to be included into the diets of production and companion animals. While there has been significant investment in research and development of large-scale insect-production systems, such facilities are yet to start producing at a significant scale. The safety and efficacy of insects as a food or feed must be established in conjunction with the development of mass rearing facilities and the optimisation of insect-rearing substrates. Insects also have nutraceutical properties that may have beneficial impacts on animal health and growth, with scope for these properties to be exploited as feed or food additives. The present review will explore the following question: ‘are insects a future livestock industry for Australia?’.

AbstractIn order to evaluate the effect of exercise training and spontaneous physical activity on growth performance, carcass composition, and locomotory ability 48 female and 48 entire male pigs were subjected to one of three treatments: individual housing in pens of 2-5 m2 (confined; C), individual housing and treadmill training for 15 minlday at a speed of 4 km/h, 5 days/week for a period of 70 days (trained; T) and group-housing equal to 0·9 m2 per animal (free; F). Pigs in treatment C and T did not differ with regard to daily gain, food intake, kg food per kg gain and carcass lean content. Training did, however, induce significant cardiac hypertrophy (by a proportion of 0·06). In treatment F (i.e. large pens), daily gain was 135 g lower than in treatment C. Dissection of the carcasses showed that treatment F increased the weight of m. psoas major (by 30 g) and the total carcass bone mass (by 130 g) when compared with treatment C. Proportions of carcass lean and intramuscular fat were unaffected by treatment F. Likewise, leg weakness and osteochondrosis did not differ between treatments, whereas the locomotory ability was positively affected by rearing in large pens (treatment F) but not by treadmill training (treatment T). Thus, physical activity in large pens induced various adaptations throughout the body.

The main objective of broiler rearing industry is production of high quality broiler carcasses that will be acceptable for consumers; Acceptability depends on the quality and quantity of edible parts of carcasses, and the amount of muscle mass in carcass. Feeding strategy in growing broiler chickens should be to produce animals with maximum lean body mass, highest feed conversion ratio and maximum body weight. Continuous genetic selection and improvement in nutrition have led to a very fast growth rate in modern strains. That early-life fast growth rate is accompanied by a number of problems, such as body fat deposition, high incidence of metabolic disorders, high mortality, and high incidence of skeletal diseases. The feed restriction programs is on of the main techniques in growth curve manipulation for increasing production efficiency in broiler chicken in alleviate the incidence of some metabolic diseases and can be used to produce a leaner bird and reduce the unfavorable effects of fat on human health, and to reduce fat deposition in broiler carcasses could be profitable in broiler chickens production. This article implicated on new findings in about different feed restriction programs effects on production efficiency and carcass quality in broiler chickens.

Black soldier flies (BSFs, Hermetia illucens) are becoming a prominent research model encouraged by the insect as food and feed and waste bioconversion industries. Insect mass-rearing facilities are at risk from the spread of viruses, but so far, none have been described in BSFs. To fill this knowledge gap, a bioinformatic approach was undertaken to discover viruses specifically associated with BSFs. First, BSF genomes were screened for the presence of endogenous viral elements (EVEs). This led to the discovery and mapping of seven orthologous EVEs integrated into three BSF genomes originating from five viral families. Secondly, a virus discovery pipeline was used to screen BSF transcriptomes. This led to detecting a new exogenous totivirus that we named hermetia illucens totivirus 1 (HiTV1). Phylogenetic analyses showed this virus belongs to a clade of insect-specific totiviruses and is closely related to the largest EVE located on chromosome 1 of the BSF genome. Lastly, this EVE was found to express a small transcript in some BSFs infected by HiTV1. Altogether, this data mining study showed that far from being unscathed from viruses, BSFs bear traces of past interactions with several viral families and of present interactions with the exogenous HiTV1.

Although several emerging mosquito control technologies are dependent on mass releases of adult males, methods of sex-sorting that can be implemented globally have not yet been established. RNAi screens led to the discovery of siRNA, which targets gamma-glutamyl transpeptidase (GGT), a gene which is well conserved in multiple species of mosquitoes and located at the sex-determining M locus region in Aedes aegypti. Silencing the A. aegypti, Aedes albopictus, Anopheles gambiae, Culex pipiens, and Culex quinquefasciatus GGT genes resulted in female larval death, with no significant impact on male survival. Generation of yeast strains that permitted affordable expression and oral delivery of shRNA corresponding to mosquito GGT genes facilitated larval target gene silencing and generated significantly increased 5 males:1 female adult ratios in each species. Yeast targeting a conserved sequence in Culex GGT genes was incorporated into a larval mass-rearing diet, permitting the generation of fit adult male C. pipiens and C. quinquefasciatus, two species for which labor-intensive manual sex separation had previously been utilized. The results of this study indicate that female-specific yeast-based RNAi larvicides may facilitate global implementation of population-based control strategies that require releases of sterile or genetically modified adult males, and that yeast RNAi strategies can be utilized in various species of mosquitoes that have progressed to different stages of sex chromosome evolution.

Aquaponic systems are becoming more prevalent and have led to accurate mass and energy balance models that allow nutrient utilization to be maximized and plant and fish systems to be coupled or complimentary. Such models still do not address the potential of using the plant side as both the primary nitrification system and as a sink for the nitrate being produced from the fish system. However, using the plants as the nitrification system for the fish waste requires a better understanding and quantification of the nitrification capacity of the plant system. A series of experiments were conducted using butterhead lettuce (Lactuca sativa, cv. Flandria) in deep water culture rafts. Plants were grown under two growing conditions and were evaluated based upon harvestable weight. Treatment 1 (H5) consisted of a standard hydroponic nutrient solution maintained at pH 5.8, while treatment 2 (A7) consisted of an aquaponic waste solution maintained at pH 7.0. The aquaponic conditions were created from a fish rearing system using koi (Cyprinus carpio) that was continuously recirculated between the designated plant tubs and the fish tank with an in-line bead filter to capture and mineralize fish solids. The total root surface area was not significantly different between treatments, but the ratio of root surface area to root fresh weight was different, suggesting that aquaponic roots are finer than hydroponic roots. Predictive equations were developed to correlate root surface area to shoot or root fresh weight, which can be used to design the nitrification component for a recirculating aquaculture system (RAS), as part of an integrated aquaponic system.

The initial development of seahorse juveniles is characterized by low digestion capabilities. Stable isotope analysis is an effective tool in studies of trophic food webs and animal feeding patterns. The present study provides new insights for the understanding of growth and food assimilation in early developing seahorses following a laboratory diet switch. The study was performed in the early life stages of the seahorse Hippocampus reidi by assessing the influence of diet shift on changes and turnovers in carbon (δ13C) and nitrogen (δ15N) stable isotope in juveniles. Newborn seahorses were fed for 60 days following two feeding schedules (A6 and A11) based initially on copepods Acartia tonsa and subsequently on Artemia nauplii (since days 6 and 11, respectively). After the prey shift, we determined δ13C and δ15N turnover rates as functions of change in either body mass (fitting model G) and days of development (fitting model D), contributions of metabolism and growth to those turnover rates, and diet–tissue discrimination factors. Survival, final dry weight, and final standard length for diet A11 were higher compared to diet A6. The shift from copepods to Artemia led to fast initial enrichments in δ13C and δ15N. Afterwards, the enrichment was gradually reduced until the isotopic equilibrium with the diet was reached. In most cases, both fitting models performed similarly. The isotopic analysis revealed that 100% of tissue turnover was attributed to growth in diet A11, whereas 19–25% was linked to metabolism in diet A6. Diet–tissue discrimination factors were estimated for the first time in seahorse juveniles, resulting in higher estimates for diet A11 (2.9 ± 0.7‰ for δ13C; 2.5 ± 0.2‰ for δ15N) than in diet A6 (1.8 ± 0.1‰ for δ13C; 1.9 ± 0.1‰ for δ15N). This study highlights the relevance of feeding on copepods and their effect on isotopic patterns and discrimination factors in seahorse juveniles after a dietary shift. Regarding the application of the results achieved in relation to the feeding schedules in the rearing of H. reidi, a long period of feeding on copepods during the first days of development is highly recommended.

Abstract Integration of sheep into cropping systems via cover crop grazing leases has potential to benefit sheep producers with a source of inexpensive, high quality forage. We examined this potential by comparing lamb growth and carcass traits of four rearing systems: grain-finished control (GR), cover crop brassica-finished (CCB), cover crop mixture-finished (CCM), and background on brassica and finished on grain (BK-GR). Dorset x Polypay lambs (n = 60; 3 pens or pastures, 5 lambs each) were blocked by body weight and randomly assigned to treatment. All diets were provided to maximize voluntary dry matter intake. Lambs were harvested after 6 wks of feeding for GR and 8 wks for CCB, CCM and BK-GR (BK-GR = 4 wks brassica then 4 wks grain). Grain-fed lambs (GR and BK-GR, 442 g/d) grew faster than pasture-fed lambs (CCB and CCM, 152 g/d) prior to harvest (Table 1, P < 0.01) and attained greater body mass (HCW), muscling (LEA, EMD), fatness (BF, BWF) and yield grade (all P < 0.05). Growth of pasture-fed lambs declined 38% over time (247 wk 1–4 vs. 152 g/d wk5-8; P < 0.05). Pasture-fed lambs were leaner than grain-fed lambs (BF, yield grade; P < 0.01), yet attained a yield grade 2 average. Background lambs (BK-GR) exhibited a 107% increase in growth when fed grain (232 g/d pasture vs. 481 g/d grain, P < 0.01) and were fatter (BF, P < 0.05) yet had reduced eye muscle depth (P < 0.01) at harvest than GR lambs. Lambs did not differ in growth or any carcass measurement according to pasture type (CCB vs. CCM). We conclude that 8 wks of cover crop finishing produced acceptable carcass weight and finish. Backgrounding on cover crops followed by 4 wks of grain finishing results in marked compensatory gain with lambs achieving the same carcass size and similar qualities to lambs fed only grain.

The pandemic of COVID-19 has afflicted every individual and has initiated a cascade of directly or indirectly involved events in precipitating mental health issues. The human species is a wanderer and hunter-gatherer by nature, and physical social distancing and nationwide lockdown have confined an individual to physical isolation. The present review article was conceived to address psychosocial and other issues and their aetiology related to the current pandemic of COVID-19. The elderly age group has most suffered the wrath of SARS-CoV-2, and social isolation as a preventive measure may further induce mental health issues. Animal model studies have demonstrated an inappropriate interacting endogenous neurotransmitter milieu of dopamine, serotonin, glutamate, and opioids, induced by social isolation that could probably lead to observable phenomena of deviant psychosocial behavior. Conflicting and manipulated information related to COVID-19 on social media has also been recognized as a global threat. Psychological stress during the current pandemic in frontline health care workers, migrant workers, children, and adolescents is also a serious concern. Mental health issues in the current situation could also be induced by being quarantined, uncertainty in business, jobs, economy, hampered academic activities, increased screen time on social media, and domestic violence incidences. The gravity of mental health issues associated with the pandemic of COVID-19 should be identified at the earliest. Mental health organization dedicated to current and future pandemics should be established along with Government policies addressing psychological issues to prevent and treat mental health issues need to be developed. References World Health Organization (WHO) Coronavirus Disease (COVID-19) Dashboard. 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One of the insufficiently studied issues in the during of replacement young stock hens young meat-and-egg chickens rearing is the determination of rational parameters of light programs for them. Proceeding from this, research was conducted at the SPRS NAAS to study the effect of the light spectrum in the poultry house during the rearing of replacement young stock of Birkovskiy meat-and-egg chickens on the results of its rearing and the productive indicators of adult birds. 6 groups of Birkovskiy meat-and-egg day-old chicks were formed, during the cultivation of which, respectively, LED lamps (LED) of cold white (4500 K), warm white (3000 K), green, blue and red light, as well as standardized incandescent lamps were used. (IL). At the age of 18 weeks, conditioned chicks were transferred to the poultry house for adult birds, where all of their groups were kept under warm white light (3000 K) with LED. It was found that the replacement young stock grown under green and cold white light (4500 K) at the age of 18 weeks had an advantage in live weight of 78-116 g (P≤0.05) compared to those grown under red light or LED or warm white IL light (2700 K). There were no other statistically significant differences in the main indicators of rearing young stock under light sources with different spectra. The rearing young reared under green and blue light later had a 1.6-1.9 g greater egg mass (P≤0.05) compared to those grown under warm white light LED (3000 K) or IL (2700 K), however, was inferior in egg production and total egg mass yield per initial laying hen to young animals that were grown under cold white (4500 K) light. There were no statistically significant differences between the groups that were grown under the light of different spectra in terms of the yield of hatching eggs and the main indicators of their incubation.

Abstract Bactrocera dorsalis (Hendel) is a notorious insect pest that attacks diverse vegetables and fruits worldwide. The sterile insect technique has been developed as an environmentally friendly and effective control method that depends on the mass production of target flies. Because dietary yeast (protein) and sucrose (carbohydrate) are important in adult diets, yeast:sucrose (Y:S) mixtures are crucial for the mass-rearing of B. dorsalis. In this study, we found adult diets with different ratios of yeast to sucrose-influenced fecundity, and an extremely high or low Y:S ratios significantly decreased egg production of B. dorsalis. Additionally, the maximum oviposition efficiency was realized at dietary yeast to sucrose ratios of 1:1 and 1:3, suggesting their potential use to produce more eggs for the mass production of B. dorsalis. Here, new gel diets having different yeast concentrations (g/L water) were also assessed for rearing B. dorsalis larvae. Gel diets containing 20 g/L yeast led to a higher pupation, pupal weight and adult eclosion rate, and a shorter developmental time than other yeast concentrations. Moreover, the present gel diet also resulted in greater pupal production and adult emergence rates than previously used liquid and solid artificial diets, revealing that it is suitable for rearing B. dorsalis larvae. This research provides a useful reference on artificial diets mixtures for mass rearing B. dorsalis, which is critical for employing the sterile insect technique.

Abstract In China, Hyphantria cunea (Drury) is an invasive phytophagous pest; it attacks nearly all species of defoliated trees. To develop integrated pest management programs (IPM) for H. cunea, we need to ensure the availability of insects by mass-rearing them on artificial diets under laboratory conditions. This study compared the growth characteristics, nutritional indices, growth indices, and digestive enzyme activity of insects reared on Pterocarya stenoptera C.DC (Fagales: Juglandaceae), the Chinese wingnut, and an artificial diet. We also investigated the correlation between diet components and growth indices using principal components analysis and Pearson correlation analysis. We found that mass-rearing of H. cunea on an artificial diet was feasible. It led to a shorter developmental period, with heavier larvae and pupae than natural diets. The principal components analysis indicated that the growth indices and α-Amylase were significantly positively associated with PC1, which explained 82.45% of the total data variability. Pearson correlation analysis showed a significant correlation between digestion, absorption parameters, and growth. Developing a mass-rearing program to produce H. cunea on an artificial diet will be valuable for improving IPM strategies. Understanding the mechanism of the responses of phytophagous insect populations to anthropogenic diet regulation can provide new ideas and methods for pest control.

AbstractThe industrial production of Tenebrio molitor L. requires optimized rearing and processing conditions to generate insect biomass with high nutritional value in large quantities. One of the problems arising from processing is a tremendous loss in mineral accessibility, affecting, amongst others, the essential trace element Zn. As a feasible strategy this study investigates Zn-enrichment of mealworms during rearing to meet the nutritional requirements for humans and animals. Following feeding ZnSO4-spiked wheat bran substrates late instar mealworm larvae were evaluated for essential micronutrients and human/animal toxic elements. In addition, growth rate and viability were assessed to select optimal conditions for future mass-rearing. Zn-feeding dose-dependently raised the total Zn content, yet the Znlarvae/Znwheat bran ratio decreased inversely related to its concentration, indicating an active Zn homeostasis within the mealworms. The Cu status remained stable, suggesting that, in contrast to mammals, the intestinal Cu absorption in mealworm larvae is not affected by Zn. Zn biofortification led to a moderate Fe and Mn reduction in mealworms, a problem that certainly can be overcome by Fe/Mn co-supplementation during rearing. Most importantly, Zn feeding massively reduced the levels of the human/animal toxicant Cd within the mealworm larvae, a technological novelty of outstanding importance to be implemented in the future production process to ensure the consumer safety of this edible insect species.

Endeavours to recycle organic waste utilizing black soldier fly (BSF) Hermetia illucens (L.) into waste management and high nutrient biomass development have indeed picked up momentum recently. But there is not much data on their appropriate rearing conditions. Very few studies delineating the fecundity and reproduction capacities of BSFs concluded that the presence of natural sunlight or artificial light with intensity of 110-200 μ mol m2s-1 and above triggers mating and oviposition (about 85-90 %) at successfully higher rates along with ideal temperature (26 to 40 °C) and relative humidity (40-70 %) conditions. Optimum food moisture (50-80%) also plays a vital role in enhancing the consumption rate of waste and therefore the treatment efficiency of the larvae. Significant development of the BSF larvae and the treatment efficiencies were also observed to be governed by the pH of waste and the optimum range was defined to be of 6.0 to 9.0. The type of organic waste also equally influences the development, fecundity, and the lifespan of flies. The present review highlights the significant research that has been conducted with respect to lifecycle of BSFs, under the set of different light combinations (LED and fluorescent lights), temperatures and organic waste composites (protein rich and fat rich substrates). Conclusively, it was inferred that ameliorations in rearing conditions such as investigation of suitable light source, modifications in egg collection and hatching structures and knowledge of biology of flies can further boost the reproductive capability of fly thereby promoting successful insect rearing and mass production.

The growing population and, consequently, the demand for food, has led to an increase in the agro-food activities, causing irreversible exploitation of natural resources. The use of insects for the management and recycling of by-products of the agro-food industry and for the production of proteins is growing. The Diptera Hermetia illucens is of particular interest as larvae are able to grow rapidly on numerous organic matters and are rich in proteins and fats. The identification of a low-cost and low-impact substrate suitable for the mass rearing of H. illucens is consequently of great interest. In this study, we evaluated the suitability of brewery wastes, spent grain and trub (used separately or mixed), as rearing substrate for the larvae. We evaluated the effect of these diets on preimmaginal performance (survival, developmental time, and weight reached) and adult traits (sex-ratio, dimension, and female fertility). As a result, the different substrates significantly impacted different biological traits. Best results, both for larvae and adults, were reported when the brewery wastes were provided together, leading to similar results obtained in a control diet and comparable to other previous studies. We conclude that brewery by-products can be valuable substrate for larval growth and in this way can be efficiently recycled and valorised.

As a well-known example of “living fossil,” horseshoe crabs are ecologically significant macroinvertebrates in coastal and estuarine ecosystems. The tri-spine horseshoe crab, Tachypleus tridentatus, has been widely utilized for Tachypleus amebocyte lysate production and food consumption since the 1980s, which led to considerable population declines along the west coast of the Pacific Ocean. The declining horseshoe crab population is expected to have ecological and social impacts. Stock enhancement through captive rearing of juveniles is cited as an important alternative to repopulate the native T. tridentatus, which in turn supports sustainable resource utilization and research activities. The hatchery production techniques for this species have gradually developed following the mass culture efforts in Japan since the late 1980s. However, the previous studies have primarily concerned the feed types and husbandry conditions to maximize the growth and survival of the juveniles. Little is known about the practicability and effectiveness of releasing large numbers of hatchery-bred individuals through releasing programs. In this review, we (1) summarize the available captive breeding and rearing techniques, (2) discuss the release strategies that could potentially improve the survival of released juveniles, and (3) identify the future opportunities and challenges in establishing technical frameworks to support responsible stock enhancement programs for T. tridentatus. The information should benefit future horseshoe crab fisheries management efforts in the attempt to restore the severely depleted populations.

Abstract The sterile insect technique has been used for the eradication or control of numerous tephritid fruit flies. However, mass-rearing and sterilization can affect the microbiota and sexual performance of male tephritid fruit flies. Despite the addition of postteneral protein food which contributes to the enhancement of the sexual performance of mass-reared males, in some cases, they are less competitive than their wild counterparts. Alternatively, the addition of probiotics may improve the sexual performance of mass-reared sterile males. In this study, we evaluated the effect of a postteneral Lactobacillus casei-enriched diet on the sexual competitivity, pheromone emission, and cuticular hydrocarbons of mass-reared sterile and fertile Anastrepha ludens (Loew) (Diptera: Tephritidae) males. Flies were fed either with sugar, standard diet (sugar and protein, 3:1), sugar + probiotic, or standard diet + probiotic. The addition of the probiotic improved the sexual competitivity of fertile and sterile males that were devoid of protein but led to a negative effect on males fed with a standard diet. As compared to males that were fed with the standard diet + probiotic/only sugar, the males fed with the standard diet or those fed on sugar + probiotic displayed a higher number of mating instances. Sterile males that fed on sugar + probiotic had a higher relative amount of anastrephine, epianastrephine, n-methyl octacosane, and 2-methyl triacontane than those fed on sugar only. Overall, these compounds were common in the treatments where males had the best sexual performance. Our results suggest that the probiotics offer nutritional advantages to males whose food lacks protein.

ABSTRACT Resting metabolic rate (RMR) is a fundamental physiological measure linked to numerous aspects of organismal function, including lifespan. Although dietary restriction in insects during larval growth/development affects adult RMR, the impact of the nutritional composition of larval diets (i.e. diet quality) on adult RMR has not been studied. Using in vitro rearing to control larval diet quality, we determined the effect of dietary protein and carbohydrate on honeybee survival to adulthood, time to eclosion, body mass/size and adult RMR. High carbohydrate larval diets increased survival to adulthood and time to eclosion compared with both low carbohydrate and high protein diets. Upon emergence, bees reared on the high protein diet were smaller and lighter than those reared on other diets, whilst those raised on the high carbohydrate diet varied more in body mass. Newly emerged adult bees reared on the high carbohydrate diet showed a significantly steeper increase in allometric scaling of RMR compared with those reared on other diets. This suggests that the nutritional composition of larval diets influences survival to adulthood, time to eclosion and the allometric scaling of RMR. Given that agricultural intensification and increasing urbanisation have led to a decrease in both forage availability and dietary diversity for bees, our results are critical to improving understanding of the impacts of poor developmental nutrition on bee growth/development and physiology.

Developmental plasticity is partly mediated by transgenerational effects, including those mediated by the maternal endocrine system. Glucocorticoid and thyroid hormones may play central roles in developmental programming through their action on metabolism and growth. However, the mechanisms by which they affect growth and development remain understudied. One hypothesis is that maternal hormones directly affect the production and availability of energy-carrying molecules (e.g. ATP) by their action on mitochondrial function. To test this hypothesis, we experimentally increased glucocorticoid and thyroid hormones in wild great tit eggs (Parus major) to investigate their impact on offspring mitochondrial aerobic metabolism (measured in blood cells), and subsequent growth and survival. We show that prenatal glucocorticoid supplementation affected offspring cellular aerobic metabolism by decreasing mitochondrial density, maximal mitochondrial respiration and oxidative phosphorylation, while increasing the proportion of the maximum capacity being used under endogenous conditions. Prenatal glucocorticoid supplementation only had mild effects on offspring body mass, size and condition during the rearing period, but led to a sex-specific (females only) decrease in body mass a few months after fledging. Contrary to our expectations, thyroid hormones supplementation did not affect offspring growth or mitochondrial metabolism. Recapture probabilities as juveniles or adults were not significantly affected by prenatal hormonal treatments. Our results demonstrate that prenatal glucocorticoids can affect post-natal mitochondrial density and aerobic metabolism. The weak effects on growth and apparent survival suggest that nestlings were mostly able to compensate for the transient decrease in mitochondrial aerobic metabolism induced by prenatal glucocorticoids.

AbstractWith external fertilization, high fecundity, and established methods for propagation and larval rearing for cultured species, fish provide systems well suited to genome-editing procedures. While early experiments utilized zinc-finger nucleases and transcription activator-like effector nucleases (TALENs), most recent ones have used the CRISPR/Cas9 editor, and achieved rates of targeted genomic insertion well above those of classical transgenic methods, with lower frequencies of off-site integration. Genome-editing experiments with cultured fishes have focused on improving growth rate and disease resistance, achievement of reproductive confinement, and other valued traits. As reviewed here, advances in knowledge of key molecular pathways and, in some cases, favorable alterations of phenotype have been achieved. For example, loss-of-function of myostatin, a negative regulator of muscle growth, led to increased muscle mass, greater weight, and greater fillet yield in genome-edited lines of red sea bream, tiger puffer, and Nile tilapia than in their unedited counterparts. The red sea bream line become the first genome-edited animal to reach commercial production. As for all animals, wide adoption of genome-edited fishes will depend upon addressing issues of regulation, consumer acceptance, and breeding infrastructure.

Abstract The success of Phasmarhabditis hermaphrodita (Schneider) Andrássy (Rhabditida: Rhabditidae) as a biological control agent of molluscs has led to a worldwide interest in phasmarhabditids. However, scant information is available on the lifecycle development of species within the genus. In the current study, the development of P. hermaphrodita, Phasmarhabditis papillosa, Phasmarhabditis bohemica and Phasmarhabditis kenyaensis were studied using ex vivo cultures, in order to improve our understanding of their biology. Infective juveniles (IJs) of each species were added to 1 g of defrosted homogenized slug cadavers of Deroceras invadens and the development monitored after inoculated IJ recovery, over a period of eight–ten days. The results demonstrated that P. bohemica had the shortest development cycle and that it was able to produce first-generation IJs after eight days, while P. hermaphrodita, P. papillosa and P. kenyaensis took ten days to form a new cohort of IJs. However, from the perspective of mass rearing, P. hermaphrodita has an advantage over the other species in that it is capable of forming self-fertilizing hermaphrodites, whereas both males and females are required for the reproduction of P. papillosa, P. bohemica and P. kenyaensis. The results of the study contribute to the knowledge of the biology of the genus and will help to establish the in vitro liquid cultures of different species of the genus.

Abstract Introduction The Lancet Commission for Global Surgery identified an adequate surgical workforce as one indicator of surgical care accessibility. Many countries where women in surgery are underrepresented struggle to meet the recommended 20 surgeons per 100,000 population. We evaluated female surgeons’ experiences globally to identify strategies to increase surgical capacity through women. Methods Three database searches identified original studies examining female surgeon experiences. Countries were grouped using the World Bank income level and Global Gender Gap Index (GGGI). Results Of 12,914 studies meeting search criteria, 139 studies were included and examined populations from 26 countries. Of the accepted studies, 132 (95%) included populations from high-income countries (HICs) and 125 (90%) exclusively examined populations from the upper 50% of GGGI ranked countries. Country income and GGGI ranking did not independently predict gender equity in surgery. Female surgeons in low GGGI HIC (Japan) were limited by familial support, while those in low income, but high GGGI countries (Rwanda) were constrained by cultural attitudes about female education. Across all populations, lack of mentorship was seen as a career barrier. HIC studies demonstrate that establishing a critical mass of women in surgery encourages female students to enter surgery. In HICs, trainee abilities are reported as equal between genders. Yet, HIC women experience discrimination from male co-workers, strain from pregnancy and childcare commitments, and may suffer more negative health consequences. Female surgeon abilities were seen as inferior in lower income countries, but more child rearing support led to fewer women delaying childbearing during training compared to North Americans and Europeans. Conclusion The relationship between country income and GGGI is complex and neither independently predict gender equity. Cultural norms between geographic regions influence the variability of female surgeons’ experiences. More research is needed in lower income and low GGGI ranked countries to understand female surgeons’ experiences and promote gender equity in increasing the number of surgical providers.

Abstract Background and Aims Tryptophan catabolism is carried out by the enzymes of the kynurenine pathway leading to the de novo synthesis of NAD and the production of a series of bioactive metabolites. Kynurenine 3-Monooxigenase (KMO) is a key component of this pathway and it is one of the enzymes responsible for the degradation of kynurenine. The kynurenine metabolites participate in various cellular processes, so systemic dysregulation of tryptophan metabolism, marked by increased kynurenine in the circulation, has been linked to the onset and severity of a wide range of pathologies, such as chronic kidney disease and associated co-morbidities. Since the enzymes of the kynurenine pathway are expressed in the kidney and the metabolites are cleared in the urine, we aim to describe the effects of changes in tryptophan catabolism on glomerular cells, both in vitro and in vivo. Method Modulation of KMO expression or enzymatic function was performed in a transgenic zebrafish line that allows for the monitoring of a fluorescently labelled protein in the circulation as an indicator for proteinuria. Morpholinos targeting three enzymes of the kynurenine pathway were injected into fish embryos, leading to a knockdown of Afmid, Kmo and Kynu. Additionally, dechorionated larvae were treated with a Kmo inhibitor administered via the embryo rearing media, starting at 48hpf. In all cases at 96hpf, circulating fluorescent protein levels were determined, larval phenotype was scored based on the severity of the edema, and samples were collected for metabolite analysis or fixed and prepared for imaging. Since the kynurenine pathway results in the de novo production of NAD, and the enzyme KMO is located in the outer mitochondrial membrane, cultured murine parietal epithelial cells as well as immortalized human and mouse podocytes were incubated with a KMO inhibitor. Changes in NAD+ and NADH, as well as alterations in the mitochondrial membrane polarization were assessed. Additionally, the oxygen consumption rate was measured in order to determine if KMO inhibition leads to changes in the bioenergetics parameters of glomerular cells in vitro. Results The modification of Afmid, Kmo and Kynu expression levels by morpholino mediated knockdown or inhibition of Kmo lead to the accumulation of upstream kynurenine metabolites in the treated larvae, as was confirmed by mass spectrometry analysis. Following our previous results, alteration of the kynurenine pathway led to the development of yolk sac edema, pericardial effusion and loss of protein from the circulation, accompanied by an enlargement of the Bowman’s space and changes in nephrin expression in the glomerulus of the treated larvae. Under cell culture conditions, KMO inhibition in immortalized podocytes led to a reduction in cell size and focal adhesion proteins (podocalyxin). The NAD+/NADH ratio as well as mitochondrial membrane polarity were also altered. Additionally, changes in spare respiratory capacity, coupling efficiency and proton leak suggest that alterations in the kynurenine pathway might impair the cell’s ability to adapt its bioenergetic profile in response to stress. Conclusion Taken together these results suggest that the modulation of tryptophan catabolism through the kynurenine pathway may contribute to maintaining the structural integrity of glomerular cytoskeleton as well a flexible energy metabolism in podocytes. Moreover, the results from our in vivo model also suggest that imbalances in kynurenine metabolites might ultimately impact the function of the glomerular filtration barrier.

Introduction It has frequently been noted that ICTs and social networking applications have blurred the once-clear boundary between work, leisure and entertainment, just as they have collapsed the distinction between public and private space. While each individual has a sense of what “home” means, both in terms of personal experience and more conceptually, the following three examples of online interaction (based on participants’ interest, or involvement, in activities traditionally associated with the home: pet care, craft and cooking) suggest that the utilisation of online communication technologies can lead to refined and extended definitions of what “home” is. These examples show how online communication can assist in meeting the basic human needs for love, companionship, shelter and food – needs traditionally supplied by the home environment. They also provide individuals with a considerably expanded range of opportunities for personal expression and emotional connection, as well as creative and commercial production, than that provided by the purely physical (and, no doubt, sometimes isolated and isolating) domestic environment. In this way, these case studies demonstrate the interplay and melding of physical and virtual “home” as domestic practices leach from the most private spaces of the physical home into the public space of the Internet (for discussion, see Gorman-Murray, Moss, and Rose). At the same time, online interaction can assert an influence on activity within the physical space of the home, through the sharing of advice about, and modeling of, domestic practices and processes. A Dog’s (Virtual) Life The first case study primarily explores the role of online communities in the formation and expression of affective values and personal identity – as traditionally happens in the domestic environment. Garber described the 1990s as “the decade of the dog” (20), citing a spate of “new anthropomorphic” (22) dog books, Internet “dog chat” sites, remakes of popular classics such as Lassie Come Home, dog friendly urban amenities, and the meteoric rise of services for pampered pets (28-9). Loving pets has become a lifestyle and culture, witnessed and commodified in Pet Superstores as well as in dog collectables and antiques boutiques, and in publications like The Bark (“the New Yorker of Dog Magazines”) and Clean Run, the international agility magazine, Website, online book store and information gateway for agility products and services. Available online resources for dog lovers have similarly increased rapidly during the decade since Garber’s book was published, with the virtual world now catering for serious hobby trainers, exhibitors and professionals as well as the home-based pet lover. At a recent survey, Yahoo Groups – a personal communication portal that facilitates social networking, in this case enabling users to set up electronic mailing lists and Internet forums – boasted just over 9,600 groups servicing dog fanciers and enthusiasts. The list Dogtalk is now an announcement only mailing list, but was a vigorous discussion forum until mid-2006. Members of Dogtalk were Australian-based “clicker-trainers”, serious hobbyist dog trainers, many of whom operated micro-businesses providing dog training or other pet-related services. They shared an online community, but could also engage in “flesh-meets” at seminars, conferences and competitive dog sport meets. An author of this paper (Rutherford) joined this group two years ago because of her interest in clicker training. Clicker training is based on an application of animal learning theory, particularly psychologist E. F. Skinner’s operant conditioning, so called because of the trademark use of a distinctive “click” sound to mark a desired behaviour that is then rewarded. Clicker trainers tend to dismiss anthropomorphic pack theory that positions the human animal as fundamentally opposed to non-human animals and, thus, foster a partnership (rather than a dominator) mode of social and learning relationships. Partnership and nurturance are common themes within the clicker community (as well as in more traditional “home” locations); as is recognising and valuing the specific otherness of other species. Typically, members regard their pets as affective equals or near-equals to the human animals that are recognised members of their kinship networks. A significant function of the episodic biographical narratives and responses posted to this list was thus to affirm and legitimate this intra-specific kinship as part of normative social relationship – a perspective that is not usually validated in the general population. One of the more interesting nexus that evolved within Dogtalk links the narrativisation of the pet in the domestic sphere with the pictorial genre of the family album. Emergent technologies, such as digital cameras together with Web-based image manipulation software and hosting (as provided by portals like Photobucket and Flickr ) democratise high quality image creation and facilitate the sharing of these images. Increasingly, the Dogtalk list linked to images uploaded to free online galleries, discussed digital image composition and aesthetics, and shared technical information about cameras and online image distribution. Much of this cultural production and circulation was concerned with digitally inscribing particular relationships with individual animals into cultural memory: a form of family group biography (for a discussion of the family photograph as a display of extended domestic space, see Rose). The other major non-training thread of the community involves the sharing and witnessing of the trauma suffered due to the illness and loss of pets. While mourning for human family members is supported in the off-line world – with social infrastructure, such as compassionate leave and/or bereavement counselling, part of professional entitlements – public mourning for pets is not similarly supported. Yet, both cultural studies (in its emphasis on cultural memory) and trauma theory have highlighted the importance of social witnessing, whereby traumatic memories must be narratively integrated into memory and legitimised by the presence of a witness in order to loosen their debilitating hold (Felman and Laub 57). Postings on the progress of a beloved animal’s illness or other misfortune and death were thus witnessed and affirmed by other Dogtalk list members – the sick or deceased pet becoming, in the process, a feature of community memory, not simply an individual loss. In terms of such biographical narratives, memory and history are not identical: “Any memories capable of being formed, retained or articulated by an individual are always a function of socially constituted forms, narratives and relations … Memory is always subject to active social manipulation and revision” (Halbwachs qtd. in Crewe 75). In this way, emergent technologies and social software provide sites, akin to that of physical homes, for family members to process individual memories into cultural memory. Dogzonline, the Australian Gateway site for purebred dog enthusiasts, has a forum entitled “Rainbow Bridge” devoted to textual and pictorial memorialisation of deceased pet dogs. Dogster hosts the For the Love of Dogs Weblog, in which images and tributes can be posted, and also provides links to other dog oriented Weblogs and Websites. An interesting combination of both therapeutic narrative and the commodification of affect is found in Lightning Strike Pet Loss Support which, while a memorial and support site, also provides links to the emerging profession of pet bereavement counselling and to suppliers of monuments and tributary urns for home or other use. loobylu and Narratives of Everyday Life The second case study focuses on online interactions between craft enthusiasts who are committed to the production of distinctive objects to decorate and provide comfort in the home, often using traditional methods. In the case of some popular craft Weblogs, online conversations about craft are interspersed with, or become secondary to, the narration of details of family life, the exploration of important life events or the recording of personal histories. As in the previous examples, the offering of advice and encouragement, and expressions of empathy and support, often characterise these interactions. The loobylu Weblog was launched in 2001 by illustrator and domestic crafts enthusiast Claire Robertson. Robertson is a toy maker and illustrator based in Melbourne, Australia, whose clients have included prominent publishing houses, magazines and the New York Public Library (Robertson “Recent Client List” online). She has achieved a measure of public recognition: her loobylu Weblog has won awards and been favourably commented upon in the Australian press (see Robertson “Press for loobylu” online). In 2005, an article in The Age placed Robertson in the context of a contemporary “craft revolution”, reporting her view that this “revolution” is in “reaction to mass consumerism” (Atkinson online). The hand-made craft objects featured in Robertson’s Weblogs certainly do suggest engagement with labour-intensive pursuits and the construction of unique objects that reject processes of mass production and consumption. In this context, loobylu is a vehicle for the display and promotion of Robertson’s work as an illustrator and as a craft practitioner. While skills-based, it also, however, promotes a family-centred lifestyle; it advocates the construction by hand of objects designed to enhance the appearance of the family home and the comfort of its inhabitants. Its specific subject matter extends to related aspects of home and family as, in addition to instructions, ideas and patterns for craft, the Weblog features information on commercially available products for home and family, recipes, child rearing advice and links to 27 other craft and other sites (including Nigella Lawson’s, discussed below). The primary member of its target community is clearly the traditional homemaker – the mother – as well as those who may aspire to this role. Robertson does not have the “celebrity” status of Lawson and Jamie Oliver (discussed below), nor has she achieved their market saturation. Indeed, Robertson’s online presence suggests a modest level of engagement that is placed firmly behind other commitments: in February 2007, she announced an indefinite suspension of her blog postings so that she could spend more time with her family (Robertson loobylu 17 February 2007). Yet, like Lawson and Oliver, Robertson has exploited forms of domestic competence traditionally associated with women and the home, and the non-traditional medium of the Internet has been central to her endeavours. The content of the loobylu blog is, unsurprisingly, embedded in, or an accessory to, a unifying running commentary on Robertson’s domestic life as a parent. Miles, who has described Weblogs as “distributed documentaries of the everyday” (66) sums this up neatly: “the weblogs’ governing discursive quality is the manner in which it is embodied within the life world of its author” (67). Landmark family events are narrated on loobylu and some attract deluges of responses: the 19 June 2006 posting announcing the birth of Robertson’s daughter Lily, for example, drew 478 responses; five days later, one describing the difficult circumstances of her birth drew 232 comments. All of these comments are pithy, with many being simple empathetic expressions or brief autobiographically based commentaries on these events. Robertson’s news of her temporary retirement from her blog elicited 176 comments that both supported her decision and also expressed a sense of loss. Frequent exclamation marks attest visually to the emotional intensity of the responses. By narrating aspects of major life events to which the target audience can relate, the postings represent a form of affective mass production and consumption: they are triggers for a collective outpouring of largely homogeneous emotional reaction (joy, in the case of Lily’s birth). As collections of texts, they can be read as auto/biographic records, arranged thematically, that operate at both the individual and the community levels. Readers of the family narratives and the affirming responses to them engage in a form of mass affirmation and consumerism of domestic experience that is easy, immediate, attractive and free of charge. These personal discourses blend fluidly with those of a commercial nature. Some three weeks after loobylu announced the birth of her daughter, Robertson shared on her Weblog news of her mastitis, Lily’s first smile and the family’s favourite television programs at the time, information that many of us would consider to be quite private details of family life. Three days later, she posted a photograph of a sleeping baby with a caption that skilfully (and negatively) links it to her daughter: “Firstly – I should mention that this is not a photo of Lily”. The accompanying text points out that it is a photo of a baby with the “Zaky Infant Sleeping Pillow” and provides a link to the online pregnancystore.com, from which it can be purchased. A quotation from the manufacturer describing the merits of the pillow follows. Robertson then makes a light-hearted comment on her experiences of baby-induced sleep-deprivation, and the possible consequences of possessing the pillow. Comments from readers also similarly alternate between the personal (sharing of experiences) to the commercial (comments on the product itself). One offshoot of loobylu suggests that the original community grew to an extent that it could support specialised groups within its boundaries. A Month of Softies began in November 2004, describing itself as “a group craft project which takes place every month” and an activity that “might give you a sense of community and kinship with other similar minded crafty types across the Internet and around the world” (Robertson A Month of Softies online). Robertson gave each month a particular theme, and readers were invited to upload a photograph of a craft object they had made that fitted the theme, with a caption. These were then included in the site’s gallery, in the order in which they were received. Added to the majority of captions was also a link to the site (often a business) of the creator of the object; another linking of the personal and the commercial in the home-based “cottage industry” sense. From July 2005, A Month of Softies operated through a Flickr site. Participants continued to submit photos of their craft objects (with captions), but also had access to a group photograph pool and public discussion board. This extension simulates (albeit in an entirely visual way) the often home-based physical meetings of craft enthusiasts that in contemporary Australia take the form of knitting, quilting, weaving or other groups. Chatting with, and about, Celebrity Chefs The previous studies have shown how the Internet has broken down many barriers between what could be understood as the separate spheres of emotional (that is, home-based private) and commercial (public) life. The online environment similarly enables the formation and development of fan communities by facilitating communication between those fans and, sometimes, between fans and the objects of their admiration. The term “fan” is used here in the broadest sense, referring to “a person with enduring involvement with some subject or object, often a celebrity, a sport, TV show, etc.” (Thorne and Bruner 52) rather than focusing on the more obsessive and, indeed, more “fanatical” aspects of such involvement, behaviour which is, increasingly understood as a subculture of more variously constituted fandoms (Jenson 9-29). Our specific interest in fandom in relation to this discussion is how, while marketers and consumer behaviourists study online fan communities for clues on how to more successfully market consumer goods and services to these groups (see, for example, Kozinets, “I Want to Believe” 470-5; “Utopian Enterprise” 67-88; Algesheimer et al. 19-34), fans regularly subvert the efforts of those urging consumer consumption to utilise even the most profit-driven Websites for non-commercial home-based and personal activities. While it is obvious that celebrities use the media to promote themselves, a number of contemporary celebrity chefs employ the media to construct and market widely recognisable personas based on their own, often domestically based, life stories. As examples, Jamie Oliver and Nigella Lawson’s printed books and mass periodical articles, television series and other performances across a range of media continuously draw on, elaborate upon, and ultimately construct their own lives as the major theme of these works. In this, these – as many other – celebrity chefs draw upon this revelation of their private lives to lend authenticity to their cooking, to the point where their work (whether cookbook, television show, advertisement or live chat room session with their fans) could be described as “memoir-illustrated-with-recipes” (Brien and Williamson). This generic tendency influences these celebrities’ communities, to the point where a number of Websites devoted to marketing celebrity chefs as product brands also enable their fans to share their own life stories with large readerships. Oliver and Lawson’s official Websites confirm the privileging of autobiographical and biographical information, but vary in tone and approach. Each is, for instance, deliberately gendered (see Hollows’ articles for a rich exploration of gender, Oliver and Lawson). Oliver’s hip, boyish, friendly, almost frantic site includes the what are purported-to-be self-revelatory “Diary” and “About me” sections, a selection of captioned photographs of the chef, his family, friends, co-workers and sponsors, and his Weblog as well as footage streamed “live from Jamie’s phone”. This self-revelation – which includes significant details about Oliver’s childhood and his domestic life with his “lovely girls, Jools [wife Juliette Norton], Poppy and Daisy” – completely blurs the line between private life and the “Jamie Oliver” brand. While such revelation has been normalised in contemporary culture, this practice stands in great contrast to that of renowned chefs and food writers such as Elizabeth David, Julia Child, James Beard and Margaret Fulton, whose work across various media has largely concentrated on food, cooking and writing about cooking. The difference here is because Oliver’s (supposedly private) life is the brand, used to sell “Jamie Oliver restaurant owner and chef”, “Jamie Oliver cookbook author and TV star”, “Jamie Oliver advertising spokesperson for Sainsbury’s supermarket” (from which he earns an estimated £1.2 million annually) (Meller online) and “Jamie Oliver social activist” (made MBE in 2003 after his first Fifteen restaurant initiative, Oliver was named “Most inspiring political figure” in the 2006 Channel 4 Political Awards for his intervention into the provision of nutritious British school lunches) (see biographies by Hildred and Ewbank, and Smith). Lawson’s site has a more refined, feminine appearance and layout and is more mature in presentation and tone, featuring updates on her (private and public) “News” and forthcoming public appearances, a glamorous selection of photographs of herself from the past 20 years, and a series of print and audio interviews. Although Lawson’s children have featured in some of her television programs and her personal misfortunes are well known and regularly commented upon by both herself and journalists (her mother, sister and husband died of cancer) discussions of these tragedies, and other widely known aspects of her private life such as her second marriage to advertising mogul Charles Saatchi, is not as overt as on Oliver’s site, and the user must delve to find it. The use of Lawson’s personal memoir, as sales tool, is thus both present and controlled. This is in keeping with Lawson’s professional experience prior to becoming the “domestic goddess” (Lawson 2000) as an Oxford graduated journalist on the Spectator and deputy literary editor of the Sunday Times. Both Lawson’s and Oliver’s Websites offer readers various ways to interact with them “personally”. Visitors to Oliver’s site can ask him questions and can access a frequently asked question area, while Lawson holds (once monthly, now irregularly) a question and answer forum. In contrast to this information about, and access to, Oliver and Lawson’s lives, neither of their Websites includes many recipes or other food and cooking focussed information – although there is detailed information profiling their significant number of bestselling cookbooks (Oliver has published 8 cookbooks since 1998, Lawson 5 since 1999), DVDs and videos of their television series and one-off programs, and their name branded product lines of domestic kitchenware (Oliver and Lawson) and foodstuffs (Oliver). Instruction on how to purchase these items is also featured. Both these sites, like Robertson’s, provide various online discussion fora, allowing members to comment upon these chefs’ lives and work, and also to connect with each other through posted texts and images. Oliver’s discussion forum section notes “this is the place for you all to chat to each other, exchange recipe ideas and maybe even help each other out with any problems you might have in the kitchen area”. Lawson’s front page listing states: “You will also find a moderated discussion forum, called Your Page, where our registered members can swap ideas and interact with each other”. The community participants around these celebrity chefs can be, as is the case with loobylu, divided into two groups. The first is “foodie (in Robertson’s case, craft) fans” who appear to largely engage with these Websites to gain, and to share, food, cooking and craft-related information. Such fans on Oliver and Lawson’s discussion lists most frequently discuss these chefs’ television programs and books and the recipes presented therein. They test recipes at home and discuss the results achieved, any problems encountered and possible changes. They also post queries and share information about other recipes, ingredients, utensils, techniques, menus and a wide range of food and cookery-related matters. The second group consists of “celebrity fans” who are attracted to the chefs (as to Robertson as craft maker) as personalities. These fans seek and share biographical information about Oliver and Lawson, their activities and their families. These two areas of fan interest (food/cooking/craft and the personal) are not necessarily or always separated, and individuals can be active members of both types of fandoms. Less foodie-orientated users, however (like users of Dogtalk and loobylu), also frequently post their own auto/biographical narratives to these lists. These narratives, albeit often fragmented, may begin with recipes and cooking queries or issues, but veer off into personal stories that possess only minimal or no relationship to culinary matters. These members also return to the boards to discuss their own revealed life stories with others who have commented on these narratives. Although research into this aspect is in its early stages, it appears that the amount of public personal revelation either encouraged, or allowed, is in direct proportion to the “open” friendliness of these sites. More thus are located in Oliver’s and less in Lawson’s, and – as a kind of “control” in this case study, but not otherwise discussed – none in that of Australian chef Neil Perry, whose coolly sophisticated Website perfectly complements Perry’s professional persona as the epitome of the refined, sophisticated and, importantly in this case, unapproachable, high-end restaurant chef. Moreover, non-cuisine related postings are made despite clear directions to the contrary – Lawson’s site stating: “We ask that postings are restricted to topics relating to food, cooking, the kitchen and, of course, Nigella!” and Oliver making the plea, noted above, for participants to keep their discussions “in the kitchen area”. Of course, all such contemporary celebrity chefs are supported by teams of media specialists who selectively construct the lives that these celebrities share with the public and the postings about others’ lives that are allowed to remain on their discussion lists. The intersection of the findings reported above with the earlier case studies suggests, however, that even these most commercially-oriented sites can provide a fruitful data regarding their function as home-like spaces where domestic practices and processes can be refined, and emotional relationships formed and fostered. In Summary As convergence results in what Turow and Kavanaugh call “the wired homestead”, our case studies show that physically home-based domestic interests and practices – what could be called “home truths” – are also contributing to a refiguration of the private/public interplay of domestic activities through online dialogue. In the case of Dogtalk, domestic space is reconstituted through virtual spaces to include new definitions of family and memory. In the case of loobylu, the virtual interaction facilitates a development of craft-based domestic practices within the physical space of the home, thus transforming domestic routines. Jamie Oliver’s and Nigella Lawson’s sites facilitate development of both skills and gendered identities by means of a bi-directional nexus between domestic practices, sites of home labour/identity production and public media spaces. As participants modify and redefine these online communities to best suit their own needs and desires, even if this is contrary to the stated purposes for which the community was instituted, online communities can be seen to be domesticated, but, equally, these modifications demonstrate that the activities and relationships that have traditionally defined the home are not limited to the physical space of the house. While virtual communities are “passage points for collections of common beliefs and practices that united people who were physically separated” (Stone qtd in Jones 19), these interactions can lead to shared beliefs, for example, through advice about pet-keeping, craft and cooking, that can significantly modify practices and routines in the physical home. Acknowledgments An earlier version of this paper was presented at the Association of Internet Researchers’ International Conference, Brisbane, 27-30 September 2006. The authors would like to thank the referees of this article for their comments and input. Any errors are, of course, our own. References Algesheimer, R., U. Dholake, and A. Herrmann. “The Social Influence of Brand Community: Evidence from European Car Clubs”. Journal of Marketing 69 (2005): 19-34. Atkinson, Frances. “A New World of Craft”. The Age (11 July 2005). 28 May 2007 http://www.theage.com.au/articles/2005/07/10/1120934123262.html>. Brien, Donna Lee, and Rosemary Williamson. “‘Angels of the Home’ in Cyberspace: New Technologies and Biographies of Domestic Production”. Paper. Biography and New Technologies conference. Humanities Research Centre, Australian National University, Canberra, ACT. 12-14 Sep. 2006. Crewe, Jonathan. “Recalling Adamastor: Literature as Cultural Memory in ‘White’ South Africa”. In Acts of Memory: Cultural Recall in the Present, eds. Mieke Bal, Jonathan Crewe, and Leo Spitzer. Hanover, NH: Dartmouth College, 1999. 75-86. Felman, Shoshana, and Dori Laub. Testimony: Crises of Witnessing in Literature, Psychoanalysis, and History. New York: Routledge, 1992. Garber, Marjorie. Dog Love. New York: Touchstone/Simon and Schuster, 1996. Gorman-Murray, Andrew. “Homeboys: Uses of Home by Gay Australian Men”. Social and Cultural Geography 7.1 (2006): 53-69. Halbwachs, Maurice. On Collective Memory. Trans. Lewis A. Closer. Chicago: U of Chicago P, 1992. Hildred, Stafford, and Tim Ewbank. Jamie Oliver: The Biography. London: Blake, 2001. Hollows, Joanne. “Feeling like a Domestic Goddess: Post-Feminism and Cooking.” European Journal of Cultural Studies 6.2 (2003): 179-202. ———. “Oliver’s Twist: Leisure, Labour and Domestic Masculinity in The Naked Chef.” International Journal of Cultural Studies 6.2 (2003): 229-248. Jenson, J. “Fandom as Pathology: The Consequences of Characterization”. The Adoring Audience; Fan Culture and Popular Media. Ed. L. A. Lewis. New York, NY: Routledge, 1992. 9-29. Jones, Steven G., ed. Cybersociety, Computer-Mediated Communication and Community. Thousand Oaks, CA: Sage, 1995. Kozinets, R.V. “‘I Want to Believe’: A Netnography of the X’Philes’ Subculture of Consumption”. Advances in Consumer Research 34 (1997): 470-5. ———. “Utopian Enterprise: Articulating the Meanings of Star Trek’s Culture of Consumption.” Journal of Consumer Research 28 (2001): 67-88. Lawson, Nigella. How to Be a Domestic Goddess: Baking and the Art of Comfort Cooking. London: Chatto and Windus, 2000. Meller, Henry. “Jamie’s Tips Spark Asparagus Shortages”. Daily Mail (17 June 2005). 21 Aug. 2007 http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html? in_article_id=352584&in_page_id=1798>. Miles, Adrian. “Weblogs: Distributed Documentaries of the Everyday.” Metro 143: 66-70. Moss, Pamela. “Negotiating Space in Home Environments: Older Women Living with Arthritis.” Social Science and Medicine 45.1 (1997): 23-33. Robertson, Claire. Claire Robertson Illustration. 2000-2004. 28 May 2007 . Robertson, Claire. loobylu. 16 Feb. 2007. 28 May 2007 http://www.loobylu.com>. Robertson, Claire. “Press for loobylu.” Claire Robertson Illustration. 2000-2004. 28 May 2007 http://www.clairetown.com/press.html>. Robertson, Claire. A Month of Softies. 28 May 2007. 21 Aug. 2007 . Robertson, Claire. “Recent Client List”. Claire Robertson Illustration. 2000-2004. 28 May 2007 http://www.clairetown.com/clients.html>. Rose, Gillian. “Family Photographs and Domestic Spacings: A Case Study.” Transactions of the Institute of British Geographers NS 28.1 (2003): 5-18. Smith, Gilly. Jamie Oliver: Turning Up the Heat. Sydney: Macmillian, 2006. Thorne, Scott, and Gordon C. Bruner. “An Exploratory Investigation of the Characteristics of Consumer Fanaticism.” Qualitative Market Research: An International Journal 9.1 (2006): 51-72. Turow, Joseph, and Andrea Kavanaugh, eds. The Wired Homestead: An MIT Press Sourcebook on the Internet and the Family. Cambridge, MA: MIT Press, 2003. Citation reference for this article MLA Style Brien, Donna Lee, Leonie Rutherford, and Rosemary Williamson. "Hearth and Hotmail: The Domestic Sphere as Commodity and Community in Cyberspace." M/C Journal 10.4 (2007). echo date('d M. Y'); ?> <http://journal.media-culture.org.au/0708/10-brien.php>. APA Style Brien, D., L. Rutherford, and R. Williamson. (Aug. 2007) "Hearth and Hotmail: The Domestic Sphere as Commodity and Community in Cyberspace," M/C Journal, 10(4). Retrieved echo date('d M. Y'); ?> from <http://journal.media-culture.org.au/0708/10-brien.php>.

Introduction: Our current obsession with the lives of others “Biography—that is to say, our creative and non-fictional output devoted to recording and interpreting real lives—has enjoyed an extraordinary renaissance in recent years,” writes Nigel Hamilton in Biography: A Brief History (1). Ian Donaldson agrees that biography is back in fashion: “Once neglected within the academy and relegated to the dustier recesses of public bookstores, biography has made a notable return over recent years, emerging, somewhat surprisingly, as a new cultural phenomenon, and a new academic adventure” (23). For over a decade now, commentators having been making similar observations about our obsession with the intimacies of individual people’s lives. In a lecture in 1994, Justin Kaplan asserted the West was “a culture of biography” (qtd. in Salwak 1) and more recent research findings by John Feather and Hazel Woodbridge affirm that “the undiminished human curiosity about other peoples lives is clearly reflected in the popularity of autobiographies and biographies” (218). At least in relation to television, this assertion seems valid. In Australia, as in the USA and the UK, reality and other biographically based television shows have taken over from drama in both the numbers of shows produced and the viewers these shows attract, and these forms are also popular in Canada (see, for instance, Morreale on The Osbournes). In 2007, the program Biography celebrated its twentieth anniversary season to become one of the longest running documentary series on American television; so successful that in 1999 it was spun off into its own eponymous channel (Rak; Dempsey). Premiered in May 1996, Australian Story—which aims to utilise a “personal approach” to biographical storytelling—has won a significant viewership, critical acclaim and professional recognition (ABC). It can also be posited that the real home movies viewers submit to such programs as Australia’s Favourite Home Videos, and “chat” or “confessional” television are further reflections of a general mania for biographical detail (see Douglas), no matter how fragmented, sensationalized, or even inane and cruel. A recent example of the latter, the USA-produced The Moment of Truth, has contestants answering personal questions under polygraph examination and then again in front of an audience including close relatives and friends—the more “truthful” their answers (and often, the more humiliated and/or distressed contestants are willing to be), the more money they can win. Away from television, but offering further evidence of this interest are the growing readerships for personally oriented weblogs and networking sites such as MySpace and Facebook (Grossman), individual profiles and interviews in periodical publications, and the recently widely revived newspaper obituary column (Starck). Adult and community education organisations run short courses on researching and writing auto/biographical forms and, across Western countries, the family history/genealogy sections of many local, state, and national libraries have been upgraded to meet the increasing demand for these services. Academically, journals and e-mail discussion lists have been established on the topics of biography and autobiography, and North American, British, and Australian universities offer undergraduate and postgraduate courses in life writing. The commonly aired wisdom is that published life writing in its many text-based forms (biography, autobiography, memoir, diaries, and collections of personal letters) is enjoying unprecedented popularity. It is our purpose to examine this proposition. Methodological problems There are a number of problems involved in investigating genre popularity, growth, and decline in publishing. Firstly, it is not easy to gain access to detailed statistics, which are usually only available within the industry. Secondly, it is difficult to ascertain how publishing statistics are gathered and what they report (Eliot). There is the question of whether bestselling booklists reflect actual book sales or are manipulated marketing tools (Miller), although the move from surveys of booksellers to electronic reporting at point of sale in new publishing lists such as BookScan will hopefully obviate this problem. Thirdly, some publishing lists categorise by subject and form, some by subject only, and some do not categorise at all. This means that in any analysis of these statistics, a decision has to be made whether to use the publishing list’s system or impose a different mode. If the publishing list is taken at face value, the question arises of whether to use categorisation by form or by subject. Fourthly, there is the bedeviling issue of terminology. Traditionally, there reigned a simple dualism in the terminology applied to forms of telling the true story of an actual life: biography and autobiography. Publishing lists that categorise their books, such as BookScan, have retained it. But with postmodern recognition of the presence of the biographer in a biography and of the presence of other subjects in an autobiography, the dichotomy proves false. There is the further problem of how to categorise memoirs, diaries, and letters. In the academic arena, the term “life writing” has emerged to describe the field as a whole. Within the genre of life writing, there are, however, still recognised sub-genres. Academic definitions vary, but generally a biography is understood to be a scholarly study of a subject who is not the writer; an autobiography is the story of a entire life written by its subject; while a memoir is a segment or particular focus of that life told, again, by its own subject. These terms are, however, often used interchangeably even by significant institutions such the USA Library of Congress, which utilises the term “biography” for all. Different commentators also use differing definitions. Hamilton uses the term “biography” to include all forms of life writing. Donaldson discusses how the term has been co-opted to include biographies of place such as Peter Ackroyd’s London: The Biography (2000) and of things such as Lizzie Collingham’s Curry: A Biography (2005). This reflects, of course, a writing/publishing world in which non-fiction stories of places, creatures, and even foodstuffs are called biographies, presumably in the belief that this will make them more saleable. The situation is further complicated by the emergence of hybrid publishing forms such as, for instance, the “memoir-with-recipes” or “food memoir” (Brien, Rutherford and Williamson). Are such books to be classified as autobiography or put in the “cookery/food & drink” category? We mention in passing the further confusion caused by novels with a subtitle of The Biography such as Virginia Woolf’s Orlando. The fifth methodological problem that needs to be mentioned is the increasing globalisation of the publishing industry, which raises questions about the validity of the majority of studies available (including those cited herein) which are nationally based. Whether book sales reflect what is actually read (and by whom), raises of course another set of questions altogether. Methodology In our exploration, we were fundamentally concerned with two questions. Is life writing as popular as claimed? And, if it is, is this a new phenomenon? To answer these questions, we examined a range of available sources. We began with the non-fiction bestseller lists in Publishers Weekly (a respected American trade magazine aimed at publishers, librarians, booksellers, and literary agents that claims to be international in scope) from their inception in 1912 to the present time. We hoped that this data could provide a longitudinal perspective. The term bestseller was coined by Publishers Weekly when it began publishing its lists in 1912; although the first list of popular American books actually appeared in The Bookman (New York) in 1895, based itself on lists appearing in London’s The Bookman since 1891 (Bassett and Walter 206). The Publishers Weekly lists are the best source of longitudinal information as the currently widely cited New York Times listings did not appear till 1942, with the Wall Street Journal a late entry into the field in 1994. We then examined a number of sources of more recent statistics. We looked at the bestseller lists from the USA-based Amazon.com online bookseller; recent research on bestsellers in Britain; and lists from Nielsen BookScan Australia, which claims to tally some 85% or more of books sold in Australia, wherever they are published. In addition to the reservations expressed above, caveats must be aired in relation to these sources. While Publishers Weekly claims to be an international publication, it largely reflects the North American publishing scene and especially that of the USA. Although available internationally, Amazon.com also has its own national sites—such as Amazon.co.uk—not considered here. It also caters to a “specific computer-literate, credit-able clientele” (Gutjahr: 219) and has an unashamedly commercial focus, within which all the information generated must be considered. In our analysis of the material studied, we will use “life writing” as a genre term. When it comes to analysis of the lists, we have broken down the genre of life writing into biography and autobiography, incorporating memoir, letters, and diaries under autobiography. This is consistent with the use of the terminology in BookScan. Although we have broken down the genre in this way, it is the overall picture with regard to life writing that is our concern. It is beyond the scope of this paper to offer a detailed analysis of whether, within life writing, further distinctions should be drawn. Publishers Weekly: 1912 to 2006 1912 saw the first list of the 10 bestselling non-fiction titles in Publishers Weekly. It featured two life writing texts, being headed by an autobiography, The Promised Land by Russian Jewish immigrant Mary Antin, and concluding with Albert Bigelow Paine’s six-volume biography, Mark Twain. The Publishers Weekly lists do not categorise non-fiction titles by either form or subject, so the classifications below are our own with memoir classified as autobiography. In a decade-by-decade tally of these listings, there were 3 biographies and 20 autobiographies in the lists between 1912 and 1919; 24 biographies and 21 autobiographies in the 1920s; 13 biographies and 40 autobiographies in the 1930s; 8 biographies and 46 biographies in the 1940s; 4 biographies and 14 autobiographies in the 1950s; 11 biographies and 13 autobiographies in the 1960s; 6 biographies and 11 autobiographies in the 1970s; 3 biographies and 19 autobiographies in the 1980s; 5 biographies and 17 autobiographies in the 1990s; and 2 biographies and 7 autobiographies from 2000 up until the end of 2006. See Appendix 1 for the relevant titles and authors. Breaking down the most recent figures for 1990–2006, we find a not radically different range of figures and trends across years in the contemporary environment. The validity of looking only at the top ten books sold in any year is, of course, questionable, as are all the issues regarding sources discussed above. But one thing is certain in terms of our inquiry. There is no upwards curve obvious here. If anything, the decade break-down suggests that sales are trending downwards. This is in keeping with the findings of Michael Korda, in his history of twentieth-century bestsellers. He suggests a consistent longitudinal picture across all genres: In every decade, from 1900 to the end of the twentieth century, people have been reliably attracted to the same kind of books […] Certain kinds of popular fiction always do well, as do diet books […] self-help books, celebrity memoirs, sensationalist scientific or religious speculation, stories about pets, medical advice (particularly on the subjects of sex, longevity, and child rearing), folksy wisdom and/or humour, and the American Civil War (xvii). Amazon.com since 2000 The USA-based Amazon.com online bookselling site provides listings of its own top 50 bestsellers since 2000, although only the top 14 bestsellers are recorded for 2001. As fiction and non-fiction are not separated out on these lists and no genre categories are specified, we have again made our own decisions about what books fall into the category of life writing. Generally, we erred on the side of inclusion. (See Appendix 2.) However, when it came to books dealing with political events, we excluded books dealing with specific aspects of political practice/policy. This meant excluding books on, for instance, George Bush’s so-called ‘war on terror,’ of which there were a number of bestsellers listed. In summary, these listings reveal that of the top 364 books sold by Amazon from 2000 to 2007, 46 (or some 12.6%) were, according to our judgment, either biographical or autobiographical texts. This is not far from the 10% of the 1912 Publishers Weekly listing, although, as above, the proportion of bestsellers that can be classified as life writing varied dramatically from year to year, with no discernible pattern of peaks and troughs. This proportion tallied to 4% auto/biographies in 2000, 14% in 2001, 10% in 2002, 18% in 2003 and 2004, 4% in 2005, 14% in 2006 and 20% in 2007. This could suggest a rising trend, although it does not offer any consistent trend data to suggest sales figures may either continue to grow, or fall again, in 2008 or afterwards. Looking at the particular texts in these lists (see Appendix 2) also suggests that there is no general trend in the popularity of life writing in relation to other genres. For instance, in these listings in Amazon.com, life writing texts only rarely figure in the top 10 books sold in any year. So rarely indeed, that from 2001 there were only five in this category. In 2001, John Adams by David McCullough was the best selling book of the year; in 2003, Hillary Clinton’s autobiographical Living History was 7th; in 2004, My Life by Bill Clinton reached number 1; in 2006, Nora Ephron’s I Feel Bad About My Neck: and Other Thoughts on Being a Woman was 9th; and in 2007, Ishmael Beah’s discredited A Long Way Gone: Memoirs of a Boy Soldier came in at 8th. Apart from McCulloch’s biography of Adams, all the above are autobiographical texts, while the focus on leading political figures is notable. Britain: Feather and Woodbridge With regard to the British situation, we did not have actual lists and relied on recent analysis. John Feather and Hazel Woodbridge find considerably higher levels for life writing in Britain than above with, from 1998 to 2005, 28% of British published non-fiction comprising autobiography, while 8% of hardback and 5% of paperback non-fiction was biography (2007). Furthermore, although Feather and Woodbridge agree with commentators that life writing is currently popular, they do not agree that this is a growth state, finding the popularity of life writing “essentially unchanged” since their previous study, which covered 1979 to the early 1990s (Feather and Reid). Australia: Nielsen BookScan 2006 and 2007 In the Australian publishing industry, where producing books remains an ‘expensive, risky endeavour which is increasingly market driven’ (Galligan 36) and ‘an inherently complex activity’ (Carter and Galligan 4), the most recent Australian Bureau of Statistics figures reveal that the total numbers of books sold in Australia has remained relatively static over the past decade (130.6 million in the financial year 1995–96 and 128.8 million in 2003–04) (ABS). During this time, however, sales volumes of non-fiction publications have grown markedly, with a trend towards “non-fiction, mass market and predictable” books (Corporall 41) resulting in general non-fiction sales in 2003–2004 outselling general fiction by factors as high as ten depending on the format—hard- or paperback, and trade or mass market paperback (ABS 2005). However, while non-fiction has increased in popularity in Australia, the same does not seem to hold true for life writing. Here, in utilising data for the top 5,000 selling non-fiction books in both 2006 and 2007, we are relying on Nielsen BookScan’s categorisation of texts as either biography or autobiography. In 2006, no works of life writing made the top 10 books sold in Australia. In looking at the top 100 books sold for 2006, in some cases the subjects of these works vary markedly from those extracted from the Amazon.com listings. In Australia in 2006, life writing makes its first appearance at number 14 with convicted drug smuggler Schapelle Corby’s My Story. This is followed by another My Story at 25, this time by retired Australian army chief, Peter Cosgrove. Jonestown: The Power and Myth of Alan Jones comes in at 34 for the Australian broadcaster’s biographer Chris Masters; the biography, The Innocent Man by John Grisham at 38 and Li Cunxin’s autobiographical Mao’s Last Dancer at 45. Australian Susan Duncan’s memoir of coping with personal loss, Salvation Creek: An Unexpected Life makes 50; bestselling USA travel writer Bill Bryson’s autobiographical memoir of his childhood The Life and Times of the Thunderbolt Kid 69; Mandela: The Authorised Portrait by Rosalind Coward, 79; and Joanne Lees’s memoir of dealing with her kidnapping, the murder of her partner and the justice system in Australia’s Northern Territory, No Turning Back, 89. These books reveal a market preference for autobiographical writing, and an almost even split between Australian and overseas subjects in 2006. 2007 similarly saw no life writing in the top 10. The books in the top 100 sales reveal a downward trend, with fewer titles making this band overall. In 2007, Terri Irwin’s memoir of life with her famous husband, wildlife warrior Steve Irwin, My Steve, came in at number 26; musician Andrew Johns’s memoir of mental illness, The Two of Me, at 37; Ayaan Hirst Ali’s autobiography Infidel at 39; John Grogan’s biography/memoir, Marley and Me: Life and Love with the World’s Worst Dog, at 42; Sally Collings’s biography of the inspirational young survivor Sophie Delezio, Sophie’s Journey, at 51; and Elizabeth Gilbert’s hybrid food, self-help and travel memoir, Eat, Pray, Love: One Woman’s Search for Everything at 82. Mao’s Last Dancer, published the year before, remained in the top 100 in 2007 at 87. When moving to a consideration of the top 5,000 books sold in Australia in 2006, BookScan reveals only 62 books categorised as life writing in the top 1,000, and only 222 in the top 5,000 (with 34 titles between 1,000 and 1,999, 45 between 2,000 and 2,999, 48 between 3,000 and 3,999, and 33 between 4,000 and 5,000). 2007 shows a similar total of 235 life writing texts in the top 5,000 bestselling books (75 titles in the first 1,000, 27 between 1,000 and 1,999, 51 between 2,000 and 2,999, 39 between 3,000 and 3,999, and 43 between 4,000 and 5,000). In both years, 2006 and 2007, life writing thus not only constituted only some 4% of the bestselling 5,000 titles in Australia, it also showed only minimal change between these years and, therefore, no significant growth. Conclusions Our investigation using various instruments that claim to reflect levels of book sales reveals that Western readers’ willingness to purchase published life writing has not changed significantly over the past century. We find no evidence of either a short, or longer, term growth or boom in sales in such books. Instead, it appears that what has been widely heralded as a new golden age of life writing may well be more the result of an expanded understanding of what is included in the genre than an increased interest in it by either book readers or publishers. What recent years do appear to have seen, however, is a significantly increased interest by public commentators, critics, and academics in this genre of writing. We have also discovered that the issue of our current obsession with the lives of others tends to be discussed in academic as well as popular fora as if what applies to one sub-genre or production form applies to another: if biography is popular, then autobiography will also be, and vice versa. If reality television programming is attracting viewers, then readers will be flocking to life writing as well. Our investigation reveals that such propositions are questionable, and that there is significant research to be completed in mapping such audiences against each other. This work has also highlighted the difficulty of separating out the categories of written texts in publishing studies, firstly in terms of determining what falls within the category of life writing as distinct from other forms of non-fiction (the hybrid problem) and, secondly, in terms of separating out the categories within life writing. Although we have continued to use the terms biography and autobiography as sub-genres, we are aware that they are less useful as descriptors than they are often assumed to be. In order to obtain a more complete and accurate picture, publishing categories may need to be agreed upon, redefined and utilised across the publishing industry and within academia. This is of particular importance in the light of the suggestions (from total sales volumes) that the audiences for books are limited, and therefore the rise of one sub-genre may be directly responsible for the fall of another. Bair argues, for example, that in the 1980s and 1990s, the popularity of what she categorises as memoir had direct repercussions on the numbers of birth-to-death biographies that were commissioned, contracted, and published as “sales and marketing staffs conclude[d] that readers don’t want a full-scale life any more” (17). Finally, although we have highlighted the difficulty of using publishing statistics when there is no common understanding as to what such data is reporting, we hope this study shows that the utilisation of such material does add a depth to such enquiries, especially in interrogating the anecdotal evidence that is often quoted as data in publishing and other studies. Appendix 1 Publishers Weekly listings 1990–1999 1990 included two autobiographies, Bo Knows Bo by professional athlete Bo Jackson (with Dick Schaap) and Ronald Reagan’s An America Life: An Autobiography. In 1991, there were further examples of life writing with unimaginative titles, Me: Stories of My Life by Katherine Hepburn, Nancy Reagan: The Unauthorized Biography by Kitty Kelley, and Under Fire: An American Story by Oliver North with William Novak; as indeed there were again in 1992 with It Doesn’t Take a Hero: The Autobiography of Norman Schwarzkopf, Sam Walton: Made in America, the autobiography of the founder of Wal-Mart, Diana: Her True Story by Andrew Morton, Every Living Thing, yet another veterinary outpouring from James Herriot, and Truman by David McCullough. In 1993, radio shock-jock Howard Stern was successful with the autobiographical Private Parts, as was Betty Eadie with her detailed recounting of her alleged near-death experience, Embraced by the Light. Eadie’s book remained on the list in 1994 next to Don’t Stand too Close to a Naked Man, comedian Tim Allen’s autobiography. Flag-waving titles continue in 1995 with Colin Powell’s My American Journey, and Miss America, Howard Stern’s follow-up to Private Parts. 1996 saw two autobiographical works, basketball superstar Dennis Rodman’s Bad as I Wanna Be and figure-skater, Ekaterina Gordeeva’s (with EM Swift) My Sergei: A Love Story. In 1997, Diana: Her True Story returns to the top 10, joining Frank McCourt’s Angela’s Ashes and prolific biographer Kitty Kelly’s The Royals, while in 1998, there is only the part-autobiography, part travel-writing A Pirate Looks at Fifty, by musician Jimmy Buffet. There is no biography or autobiography included in either the 1999 or 2000 top 10 lists in Publishers Weekly, nor in that for 2005. In 2001, David McCullough’s biography John Adams and Jack Welch’s business memoir Jack: Straight from the Gut featured. In 2002, Let’s Roll! Lisa Beamer’s tribute to her husband, one of the heroes of 9/11, written with Ken Abraham, joined Rudolph Giuliani’s autobiography, Leadership. 2003 saw Hillary Clinton’s autobiography Living History and Paul Burrell’s memoir of his time as Princess Diana’s butler, A Royal Duty, on the list. In 2004, it was Bill Clinton’s turn with My Life. In 2006, we find John Grisham’s true crime (arguably a biography), The Innocent Man, at the top, Grogan’s Marley and Me at number three, and the autobiographical The Audacity of Hope by Barack Obama in fourth place. Appendix 2 Amazon.com listings since 2000 In 2000, there were only two auto/biographies in the top Amazon 50 bestsellers with Lance Armstrong’s It’s Not about the Bike: My Journey Back to Life about his battle with cancer at 20, and Dave Eggers’s self-consciously fictionalised memoir, A Heartbreaking Work of Staggering Genius at 32. In 2001, only the top 14 bestsellers were recorded. At number 1 is John Adams by David McCullough and, at 11, Jack: Straight from the Gut by USA golfer Jack Welch. In 2002, Leadership by Rudolph Giuliani was at 12; Master of the Senate: The Years of Lyndon Johnson by Robert Caro at 29; Portrait of a Killer: Jack the Ripper by Patricia Cornwell at 42; Blinded by the Right: The Conscience of an Ex-Conservative by David Brock at 48; and Louis Gerstner’s autobiographical Who Says Elephants Can’t Dance: Inside IBM’s Historic Turnaround at 50. In 2003, Living History by Hillary Clinton was 7th; Benjamin Franklin: An American Life by Walter Isaacson 14th; Dereliction of Duty: The Eyewitness Account of How President Bill Clinton Endangered America’s Long-Term National Security by Robert Patterson 20th; Under the Banner of Heaven: A Story of Violent Faith by Jon Krakauer 32nd; Leap of Faith: Memoirs of an Unexpected Life by Queen Noor of Jordan 33rd; Kate Remembered, Scott Berg’s biography of Katharine Hepburn, 37th; Who’s your Caddy?: Looping for the Great, Near Great and Reprobates of Golf by Rick Reilly 39th; The Teammates: A Portrait of a Friendship about a winning baseball team by David Halberstam 42nd; and Every Second Counts by Lance Armstrong 49th. In 2004, My Life by Bill Clinton was the best selling book of the year; American Soldier by General Tommy Franks was 16th; Kevin Phillips’s American Dynasty: Aristocracy, Fortune and the Politics of Deceit in the House of Bush 18th; Timothy Russert’s Big Russ and Me: Father and Son. Lessons of Life 20th; Tony Hendra’s Father Joe: The Man who Saved my Soul 23rd; Ron Chernow’s Alexander Hamilton 27th; Cokie Roberts’s Founding Mothers: The Women Who Raised our Nation 31st; Kitty Kelley’s The Family: The Real Story of the Bush Dynasty 42nd; and Chronicles, Volume 1 by Bob Dylan was 43rd. In 2005, auto/biographical texts were well down the list with only The Year of Magical Thinking by Joan Didion at 45 and The Glass Castle: A Memoir by Jeanette Walls at 49. In 2006, there was a resurgence of life writing with Nora Ephron’s I Feel Bad About My Neck: and Other Thoughts on Being a Woman at 9; Grisham’s The Innocent Man at 12; Bill Buford’s food memoir Heat: an Amateur’s Adventures as Kitchen Slave, Line Cook, Pasta-Maker, and Apprentice to a Dante-Quoting Butcher in Tuscany at 23; more food writing with Julia Child’s My Life in France at 29; Immaculée Ilibagiza’s Left to Tell: Discovering God amidst the Rwandan Holocaust at 30; CNN anchor Anderson Cooper’s Dispatches from the Edge: A Memoir of War, Disasters and Survival at 43; and Isabella Hatkoff’s Owen & Mzee: The True Story of a Remarkable Friendship (between a baby hippo and a giant tortoise) at 44. In 2007, Ishmael Beah’s discredited A Long Way Gone: Memoirs of a Boy Soldier came in at 8; Walter Isaacson’s Einstein: His Life and Universe 13; Ayaan Hirst Ali’s autobiography of her life in Muslim society, Infidel, 18; The Reagan Diaries 25; Jesus of Nazareth by Pope Benedict XVI 29; Mother Teresa: Come be my Light 36; Clapton: The Autobiography 40; Tina Brown’s The Diana Chronicles 45; Tony Dungy’s Quiet Strength: The Principles, Practices & Priorities of a Winning Life 47; and Daniel Tammet’s Born on a Blue Day: Inside the Extraordinary Mind of an Autistic Savant at 49. Acknowledgements A sincere thank you to Michael Webster at RMIT for assistance with access to Nielsen BookScan statistics, and to the reviewers of this article for their insightful comments. Any errors are, of course, our own. References Australian Broadcasting Commission (ABC). “About Us.” Australian Story 2008. 1 June 2008. ‹http://www.abc.net.au/austory/aboutus.htm>. 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