Relevant bibliographies by topics / Marsupials Conservation

Academic literature on the topic 'Marsupials Conservation'

Author: Grafiati
Published: 10 December 2022
Last updated: 30 January 2023

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Journal articles on the topic "Marsupials Conservation"

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Sherwin, WB, and ND Murray. "Population and Conservation Genetics of Marsupials." Australian Journal of Zoology 37, no. 3 (1989): 161. http://dx.doi.org/10.1071/zo9890161.

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This article summarises current knowledge of marsupial population genetics, and discusses its relevance to the conservation of marsupial species. It has been suggested that there is much lower genetic variation within marsupial populations than in eutherian mammals. This trend is not evident in the electrophoretic data summarised here. However, genetic differentiation between populations, subspecies, and species of marsupials appears to be slightly lower than comparable values for eutherians. Genetic estimates of migration between populations are scarce at present, but show values that are comparable with eutherians. Some studies of marsupial population genetics have used non-electrophoretic characteristics, or have addressed the possibility of selection on the characters analysed. Although few, these studies indicate the suitability of marsupials for such investigations. Recent debate over the theories and applications of conservation genetics has made it clear that more research is required on individual species. Given the record of extinction of marsupials in the last 200 years, it is important to test the applicability of these theories to individual marsupial species. Several examples are discussed emphasising the need for ecological studies that estimate the effective number of reproducing individuals per generation. This figure, called the effective size, is the corner- stone of conservation genetics theory, being an important determinant of both the rate of loss of variation between individuals, and the rate of inbreeding. The effective size of the mainland population of the eastern barred bandicoot, Perameles gunnii, appears to be only about one-tenth of its census number. This result is comparable with estimates made in other vertebrates, and demonstrates that many marsupial species which appear to have an adequate census size on ecological grounds may face genetic problems resulting from small effective size.
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J. Foley, William. "Marsupial Nutrition." Pacific Conservation Biology 5, no. 3 (1999): 240. http://dx.doi.org/10.1071/pc99240a.

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In the early 1980s advances in marsupial biology could no longer be encapsulated in a single volume such as Hugh Tyndale-Biscoe's "Life of Marsupials" and Cambridge University Press commissioned a series of monographs covering a range of different topics in marsupial biology. As it was, only three of that series were realized and among them was the ptedecessor to this book "Digestive Physiology and Nutrition of Marsupials" published in 1982. "Marsupial Nutrition" is a considerably expanded and comprehensive review of studies of nutrition and digestive physiology of Australasian and South American marsupials. In Australia, many ecologists view the limited nutrient status of our soils and vegetation as a fundamental limit to animal populations. This book explains firstly how Australian marsupials have responded to those limitations and secondly asks whether these responses are common amongst marsupials living in New Guinea and South America.
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Rodger, JC. "Prospects for the Artificial Manipulation of Marsupial Reproduction and Its Application in Research and Conservation." Australian Journal of Zoology 37, no. 3 (1989): 249. http://dx.doi.org/10.1071/zo9890249.

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Techniques to manipulate reproduction and productivity are well established features of the husbandry of domestic animals and the treatment of human infertility. Similar approaches are feasible in marsupials, but little work has been done to apply our considerable basic knowledge of marsupial reproduction to produce practical artificial breeding. If the reproduction and productivity of marsupials could be more effectively controlled it would greatly aid research and profoundly change both current practice in the management of zoo animals, and the strategies employed for the breeding and conservation of rare or endangered species. The present paper sets out the likely agenda, reports progress to date and discusses short and long-term prospects for the artificial breeding of marsupials. Topics discussed include: induced ovulation and superovulation, oocyte and embryo collection, semen collection and the frozen storage of sperm, artificial insemination, in vitro fertilization and embryo transfer, frozen storage of embryos, and the use of surrogate mothers in supporting both pregnancy to term, and the development of young in the pouch.
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Taggart, D. A., D. Schultz, and P. D. Temple-Smith. "Development and Application of Assisted Reproductive Technologies in Marsupials: Their Value for Conservation of Rock-wallabies." Australian Mammalogy 19, no. 2 (1996): 183. http://dx.doi.org/10.1071/am97183.

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Assisted reproductive technology is used routinely in management to treat infertility and in domestic species in basic husbandry. In eutherian mammals application of this technology is also well established in wildlife conservation programs. The development and application of this technology in marsupials, however, is a relatively new field. The reproductive techniques currently available for marsupial studies, their benefits and implications for conservation are discussed in order to remove any previous misconceptions and provide an insight into how these techniques might be applied. The potential of this technology for maintaining genetic variability and enhancing reproductive output of threatened marsupial species is highlighted, with particular reference to the conservation of rock wallabies.
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Sinclair, A. R. E. "Fertility control of mammal pests and the conservation of endangered marsupials." Reproduction, Fertility and Development 9, no. 1 (1997): 1. http://dx.doi.org/10.1071/r96057.

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Populations are bounded by negative feedbacks operating through fertility or mortality, termedpopulation regulation. If fertility is artificially reduced, the average size of the population is also reduced, but only under certain conditions. If (i) juvenile survival or (ii) adult survival improve due to lower fertility, or (iii) territoriality limits populations, the effects of lower birth rate will not change population size unless such reduction exceeds the effects of these processes. Published data on population trends and birth rates have allowed a comparison among species of instantaneous rates of change. The intrinsic rate of increase, rm, and population variability are both related to body size, because birth rates and survivorship are also related to body size. These rates are trade-offs as adaptations. Populations of species in exotic habitats may fluctuate more than when they are in their indigenous habitats. Fertility control could reduce such fluctations. Marsupials have lower birth rates than eutherians, and so rely more on survivorship, perhaps as an adaptation to unpredictable environments. Compromising survival by either habitat change or increased predation will affect marsupials more than eutherians. This explains why many marsupial populations are declining towards extinction.
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Renfree, MB. "Monotreme and marsupial reproduction." Reproduction, Fertility and Development 7, no. 5 (1995): 1003. http://dx.doi.org/10.1071/rd9951003.

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Marsupials were regarded as curiosities by their early European discoverers, animals to be wondered at. Monotremes were even more surprising; the platypus was such an amalgam of characters that it was thought to be a hoax. They were recognized very early as mammals that could make a major contribution to our understanding of reproductive processes, and work on marsupials at the turn of the century was much in evidence. It is, however, only in the past two decades, and especially in the past few years that marsupial research has regained this position. There is no doubt that future research will strengthen this contribution, but we are faced with serious conservation questions that must be solved if we are to maintain these wonderful animals as a resource for future generations.
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Hwang, Jae Yeon, Jamie Maziarz, Günter P. Wagner, and Jean-Ju Chung. "Molecular Evolution of CatSper in Mammals and Function of Sperm Hyperactivation in Gray Short-Tailed Opossum." Cells 10, no. 5 (April 29, 2021): 1047. http://dx.doi.org/10.3390/cells10051047.

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Males have evolved species-specifical sperm morphology and swimming patterns to adapt to different fertilization environments. In eutherians, only a small fraction of the sperm overcome the diverse obstacles in the female reproductive tract and successfully migrate to the fertilizing site. Sperm arriving at the fertilizing site show hyperactivated motility, a unique motility pattern displaying asymmetric beating of sperm flagella with increased amplitude. This motility change is triggered by Ca2+ influx through the sperm-specific ion channel, CatSper. However, the current understanding of the CatSper function and its molecular regulation is limited in eutherians. Here, we report molecular evolution and conservation of the CatSper channel in the genome throughout eutherians and marsupials. Sequence analyses reveal that CatSper proteins are slowly evolved in marsupials. Using an American marsupial, gray short-tailed opossum (Monodelphis domestica), we demonstrate the expression of CatSper in testes and its function in hyperactivation and unpairing of sperm. We demonstrate that a conserved IQ-like motif in CatSperζ is required for CatSperζ interaction with the pH-tuned Ca2+ sensor, EFCAB9, for regulating CatSper activity. Recombinant opossum EFCAB9 can interact with mouse CatSperζ despite high sequence divergence of CatSperζ among CatSper subunits in therians. Our finding suggests that molecular characteristics and functions of CatSper are evolutionarily conserved in gray short-tailed opossum, unraveling the significance of sperm hyperactivation and fertilization in marsupials for the first time.
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Kasai, Fumio, Patricia C. M. O'Brien, Jorge C. Pereira, and Malcolm A. Ferguson-Smith. "Marsupial chromosome DNA content and genome size assessed from flow karyotypes: invariable low autosomal GC content." Royal Society Open Science 5, no. 8 (August 2018): 171539. http://dx.doi.org/10.1098/rsos.171539.

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Extensive chromosome homologies revealed by cross-species chromosome painting between marsupials have suggested a high level of genome conservation during evolution. Surprisingly, it has been reported that marsupial genome sizes vary by more than 1.2 Gb between species. We have shown previously that individual chromosome sizes and GC content can be measured in flow karyotypes, and have applied this method to compare four marsupial species. Chromosome sizes and GC content were calculated for the grey short-tailed opossum (2 n = 18), tammar wallaby (2 n = 16), Tasmanian devil (2 n = 14) and fat-tailed dunnart (2 n = 14), resulting in genome sizes of 3.41, 3.31, 3.17 and 3.25 Gb, respectively. The findings under the same conditions allow a comparison between the four species, indicating that the genomes of these four species are 1–8% larger than human. We show that marsupial genomes are characterized by a low GC content invariable between autosomes and distinct from the higher GC content of the marsupial × chromosome.
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Deakin, Janine E. "Marsupial Genome Sequences: Providing Insight into Evolution and Disease." Scientifica 2012 (2012): 1–22. http://dx.doi.org/10.6064/2012/543176.

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Marsupials (metatherians), with their position in vertebrate phylogeny and their unique biological features, have been studied for many years by a dedicated group of researchers, but it has only been since the sequencing of the first marsupial genome that their value has been more widely recognised. We now have genome sequences for three distantly related marsupial species (the grey short-tailed opossum, the tammar wallaby, and Tasmanian devil), with the promise of many more genomes to be sequenced in the near future, making this a particularly exciting time in marsupial genomics. The emergence of a transmissible cancer, which is obliterating the Tasmanian devil population, has increased the importance of obtaining and analysing marsupial genome sequence for understanding such diseases as well as for conservation efforts. In addition, these genome sequences have facilitated studies aimed at answering questions regarding gene and genome evolution and provided insight into the evolution of epigenetic mechanisms. Here I highlight the major advances in our understanding of evolution and disease, facilitated by marsupial genome projects, and speculate on the future contributions to be made by such sequences.
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Witt, R. R., L. A. Hinds, and J. C. Rodger. "93 Oestrous Synchronisation Studies in a Marsupial." Reproduction, Fertility and Development 30, no. 1 (2018): 186. http://dx.doi.org/10.1071/rdv30n1ab93.

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There is no strategy to precisely synchronise and predict oestrus and ovulation in marsupials. This is the major limitation in applying assisted reproduction to marsupial conservation. Routine methods of female synchronization that target the ovary (effective in eutherians) are ineffective in marsupials because they do not disrupt the corpus luteum. Gondaotropin-releasing hormone (GnRH) agonists have been used to suppress female cycling in several marsupials and work by targeting GnRH action in the pituitary. After the GnRH agonist reaches its active endpoint, female cycling returns. This study investigated whether Lucrin Depot (Abbott Laboratories, Lake Bluff, IL, USA), a tailored 1-month microsphere GnRH agonist preparation, has the potential to first suppress female cycling, and then facilitate a synchronous return to female cycling in a model marsupial, the tammar wallaby (Macropus eugenii). Preliminary studies indicated that Lucrin could be used to regulate ovarian activity, but a dose >0.20 mg kg−1 was required. In this study, nonpregnant tammars (n = 18, 6 per group) had their pouch young removed (RPY) on Day 0; RPY suspends lactation and reactivates cycling, allowing for controlled assessment of oestrus and mating in treated and untreated females. On Day 0, an intramuscular (IM) injection of water (Control) or 1 mg kg−1 of Lucrin Depot (group A) was given after RPY. Group B also received 1 mg kg−1 of Lucrin Depot but this was not injected until Day 10 after RPY (a strategy to assess whether timing of Lucrin yields different results). Females were placed in breeding pens of 1 male to 3 females. Reproductive suppression and synchrony of return to female cycling was assessed by pouch and urogenital opening checks to detect newborn young and copulatory plugs. All data (time of mating/conception) were analysed using ANOVA (significance, P < 0.05). There was a significant difference between the first mating response in the Control compared with Groups A and B (P = 0.0003), but the time from Lucrin injection to mating, Day 0 or Day 10, was not significant (P = 0.1431). All control females mated before Day 32 RPY, whereas all Lucrin-treated females mated from Day 33 to 66. All Lucrin-treated females conceived as evidenced by pouch young. Further analysis revealed 2 Lucrin-injection to mating response intervals, those females delayed by ~10 days that conceived between 33 and 50 days (n = 7: 41 ± 2.1 days; mean ± SEM), and those females delayed by ~30 days that conceived between 61 and 66 days (n = 5: 62 ± 1.0 days; mean ± SEM) following injection. Thus, an IM injection of 1 mg kg−1 of Lucrin Depot is sufficient to delay oestrus in breeding tammar wallabies whether given at the time of RPY or 10 days later. This study confirmed that Lucrin Depot can be used to regulate ovarian activity in macropod marsupials, and has potential to form the basis of a GnRH agonist-based synchronisation strategy for use in assisted breeding for marsupial conservation. This research was supported by Holsworth Wildlife Research Endowment.
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Dissertations / Theses on the topic "Marsupials Conservation"

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Firestone, Karen Beth School of Biological Science UNSW. "The Application of Molecular Genetics to the Conservation Management of Quolls, Dasyurus Species (Dasyuridae:Marsupialia)." Awarded by:University of New South Wales. School of Biological Science, 1999. http://handle.unsw.edu.au/1959.4/17491.

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The quolls are among the largest of the remaining carnivorous marsupials in the Australasian region, and thus occupy an important ecological niche as top predators and scavengers. All quolls are currently in decline and threatened to some degree yet the application of molecular information to the conservation and management of quolls has been unexplored until now. In this thesis I use two independent and highly variable genetic marker systems, the mitochondrial DNA (mtDNA) control region and nuclear microsatellites, to explore various aspects of conservation genetics relevant to the management of quolls. These aspects include an examination of the phylogenetic or evolutionary relationships among all six species of quolls, an examination of the genetic diversity within populations and the degree of differentiation between populations of the four Australian species of quolls, and the definition of units for conservation within these species. The development of suitable nuclear markers was a vital first step in defining levels of genetic variability and differentiation within and between the different populations and species. These markers proved to be highly variable and provided a wealth of information of relevance to the conservation of these species, and will be extremely useful in further studies. The use of the mtDNA control region for phylogenetic analyses was a novel approach to examining this question in quolls and also proved to be highly informative. Results from these phylogenetic analyses highlight the necessity of 1) examining more than one exemplar of each species, as well as 2) finally bringing some consensus to the question of the evolutionary relationships among quolls. Results show that northern quolls form the earliest split from all other quolls and that western quolls are closely related to the two New Guinean species. Furthermore, there is evidence for distinct lineages within species, corresponding to geographically separate or isolated populations. Levels of genetic variability within populations were examined using the microsatellites developed previously. Genetic variation was significantly higher in western quolls than in any other species. This was surprising given the long term and widespread decline of this species. There were also significant differences between populations within species in the level of genetic variability. Low levels of variability were usually found in small or captive bred populations or populations in severe decline. Genetic differentiation between populations was also explored using microsatellites. Significant differentiation in allele frequency distributions was found between most pairwise population comparisons, indicating that each of these populations forms a separate management unit (MU) for conservation purposes. One notable exception was found among populations of tiger quolls from a highly localized area in the Barrington Tops region of New South Wales. Using microsatellites, these populations were not significantly subdivided and thus appeared to be one MU. Using mtDNA, however, these populations were significantly subdivided and thus should be considered separate MUs. Differences in the way these two genetic markers are inherited (mtDNA is maternally inherited, microsatellites are biparentally inherited) provides a clue as to the social structure and organization of these cryptic nocturnal species. Consequently, the use of different genetic marker systems shows that there is sex-biased migration within this species. Finally, the degree of genetic differentiation observed within tiger quolls does not conform to the currently recognized subspecific categories within this species. The major genetic split occurs between the Tasmanian and mainland populations of tiger quolls, not between Dasyurus maculatus maculatus and D. m. gracilis. Thus, the Tasmanian and mainland populations form two distinct evolutionarily significant units (ESUs) for conservation purposes, and I propose that the Tasmanian populations should be elevated to the subspecific status to account for this.
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Pereira, Viviane Morlanes. "Ecologia de pequenos mamíferos (Didelphimorphia e Rodentia) em uma área de caatinga do Rio Grande do Norte." Universidade Federal Rural do Semi-Árido, 2016. http://bdtd.ufersa.edu.br:80/tede/handle/tede/635.

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The Caatinga biome occurs in the states of the states of Maranhão, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Paraíba, Alagoas, Sergipe, Bahia and Minas Gerais, in Brazil. Despite being the only exclusively Brazilian ecosystem, few resources for research on biodiversity and conservation are devoted to this biome. The generation of knowledge on biodiversity of the Caatinga is essential for establishing effective strategies for management and conservation of species and habitats, particularly in a biome as sensitive and as threatened this one. The present work is divided into two chapters. The first one is an extensive literature review on the occurrence, distribution and chromosomal characteristics of species of small terrestrial mammals recorded in the Caatinga. The second chapter presents data on diversity, ecology and seasonality of a community of small terrestrial mammals (Didelphimorphia and Rodentia) using capture-marking-recapture methods throughout twelve successive months in a well-preserved native forest fragment of Caatinga located at the Experimental Farm Rafael Fernandes from the Universidade Federal Rural do Semi-Árido, Mossoró-RN
O bioma Caatinga ocorre nos estados do Maranhão, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Paraíba, Alagoas, Sergipe, Bahia e Minas Gerais, no Brasil. Apesar de ser o único ecossistema exclusivamente brasileiro, poucos recursos para pesquisas sobre biodiversidade e conservação são voltados para este bioma. A geração de conhecimento sobre a diversidade biológica da Caatinga torna-se essencial para estabelecer estratégias eficazes de gestão e conservação de espécies e habitats, particularmente em um bioma tão sensível e ameaçado como esse. O presente trabalho se divide em dois capítulos e, o primeiro, consiste em uma extensa revisão bibliográfica sobre a ocorrência, distribuição e características cromossômicas das espécies de pequenos mamíferos terrestres que habitam a Caatinga. O segundo capítulo, apresenta dados sobre diversidade, ecologia e sazonalidade de uma comunidade de pequenos mamíferos terrestres (Didelphimorphia e Rodentia) através de um estudo usando o método de captura-marcação-recaptura ao longo de doze meses sucessivos de amostragem em um fragmento de mata nativa de Caatinga bem conservada situada na Fazenda Experimental Rafael Fernandes da Universidade Federal Rural do Semi-Árido, Mossoró-RN
2017-03-24
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Aberton, John G., and mikewood@deakin edu au. "Succession of small mammal communities after fire and reintroduction of the Swamp Antechinus Antechinue Minimus." Deakin University. School of Biological and Chemical Sciences, 1996. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051111.122639.

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This thesis is involved with changes that have occurred to small mammal populations following a major disturbance in the Anglesea region as a result of the 1983 Ash Wednesday fires. Fire, with its effects on spatial and temporal heterogeneity, was found to be an important factor in the maintenance of vegetation and small mammal community structure and diversity in the region. Successional changes in vegetation and small mammal communities were described by multivariate analyses, using data collected annually from 22 study sites. The use of factor analysis techniques, in reducing the annual capture data content, enabled long-term changes in the structure of mammal communities to be interpreted. The small mammal communities in the coastal heath and forest vegetation in the Anglesea region show evidence of a general resilience, (the degree and speed of recovery), to disturbance. Two phases of successional response to fire by mammal species have been proposed; a ‘re-establishment’ phase which occurs in the initial 5-6 years post-fire and is accompanied by rapid increase in species’ abundance, and a subsequent ‘maintenance’ phase accompanied by relatively minor changes in abundance. Habitat Suitability Indices were produced relating to these phases. Vertical density measures of understorey shrubs and herb layers showed significant relationships with small mammal species abundance at the study sites. Long term studies following major disturbances are needed to distinguish between short term recovery of plant and animal species and long term changes in these species. Studies extending over a number of years enable a better directional view of changes in small mammal communities than can be determined from . observations made over a short period. As a part of the investigation into temporal change, it was proposed to undertake trial reintroductions of the Swamp antechinus, Ant echinus minimus, a marsupial dasyurid species which was trapped in the area prior to the 1983 fire, but rarely subsequently. Other more commonly observed native small mammal species (e.g. Rattus fuscipes,R. lutreolus, Antechinus stuartii, Sminthopsis leucopus) had re-invaded the proposed reintroduction site after this fire. Failure of A. minimus to re-establish may have been due to spatial separation of the pre-fire populations coupled with the extensive area burnt in 1983, A source population of the species was located about 100km to the west and habitat utilization and interspecific and niche relationships between the species making the small mammal community explored. Discriminant analysis revealed some spatial separation of species within a habitat based on structural vegetation factors rather than floristic factors. Temporal separation of species was observed, asA. minimus were more active than Rattus species during daylight periods. There was evidence of micro-habitat selection by species, and structural vegetation factors were most commonly identified in statistical analyses as contributing towards selection by small mammal species. Following a theoretical modelling study three reintroduction trials were carried out near Anglesea during 1992-94. Individuals were subsequently radio tracked, and habitat relationships between the species in the small mammal community investigated. Although successful breeding of A, minimus occurred during the latter two trials, the subsequent fate of offspring was not determined. Invasive techniques required to adequately monitor young animals were considered potentially too damaging. Telemetry studies indicated a preference of A. minimus for short, wet heath vegetation. Structural vegetation factors were identified as being significant in discriminating between capture locations of species. Small scale and inexpensive trial reintroductions have yielded valuable additional data on this species and may be viewed as a useful tool in the conservation of other small native mammals.
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Miller, Emily Jane Biological Earth &amp Environmental Sciences Faculty of Science UNSW. "Conservation genetics and reproduction in three Australian marsupial species." Publisher:University of New South Wales. Biological, Earth & Environmental Sciences, 2008. http://handle.unsw.edu.au/1959.4/42779.

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Many Australian marsupial species require active population management to ensure their survival in the wild. Such management should be based on a sound understanding of species biology. This thesis explores how knowledge of reproduction and genetics can be applied to the management of three Australian marsupial species faced with contrasting management scenarios. The ??vulnerable?? greater bilby is the sole remaining desert bandicoot in Australia. They are a secretive, solitary species whose mating system is unclear. This research examined temporal changes in genetic diversity within two captive breeding programs utilising different management strategies. Using seven microsatellite loci, this study found the regular translocation of new individuals into the population maintained genetic diversity. Parentage analysis revealed the bilby to have a promiscious mating system. Sires and non-sires could not be distinguished by morphological traits. The tammar wallaby is a polygynous, solitary species that is threatened on mainland Australia, but overabundant on some offshore islands. The population genetics of tammars from the Abrolhos Islands in Western Australia were examined using nine autosomal and four Y-linked microsatellite loci, and mitochondrial DNA. There was a relationship between island size, population size and genetic diversity. The Abrolhos populations have significantly lower genetic diversity and are more inbred than mainland tammars and all sampled populations were significantly differentiated. The Abrolhos and mainland populations should be treated as separate Management Units. The eastern grey kangaroo is a gregarious, polygynous species that is often locally overabundant. To determine traits influencing male reproductive success, behavioural, morphological, physiological and genetic data were examined and showed dominance status, body size and testosterone concentrations were important factors. Sires were also significantly more heterozygous and genetically dissimilar to females, than non-sires. As body condition influences individual fitness, and management decisions; five body condition indices (BCI) calculated from morphological data were validated using serum biochemistry and haematology in two kangaroo populations with contrasting body condition. Blood parameters were found to be more reliable indicators of condition, questioning the credibility of BCIs currently used in management. These studies demonstrate the importance of reproductive and genetic data in assisting wildlife management, regardless of a species conservation status.
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Hing, S. "Stress, wildlife health and the conservation of a critically endangered marsupial, the woylie." Thesis, Hing, S. (2016) Stress, wildlife health and the conservation of a critically endangered marsupial, the woylie. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/36359/.

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Effective wildlife management requires an understanding of how animals cope physiologically with stress. When stressors are encountered, the hypothalamic pituitary adrenal (HPA) axis is activated releasing glucocorticoids, which can alter immune function and infectious disease dynamics. Investigations have suggested that stress associated immunosuppression and exacerbation of infection (particularly by Trypanosoma spp. of haemoparasite) may play a role in the decline of the woylie (syn. brush-tailed bettong, Bettongia penicillata), a critically endangered marsupial. This thesis aims to investigate the relationship between stress, immune function and parasite infection dynamics in woylies. Woylies were trapped from wild populations, reserves and captivity with faecal and blood samples collected from over 300 individuals. Parallel parasitological and non-invasive endocrine analyses were performed to quantify endoparasites and faecal cortisol metabolites (FCM), end-products of HPA axis activation. I also adapted an assay developed in human infants to assess innate immunity in woylies. The novel results suggest that stress physiology and Trypanosoma infection status influence innate immunity. Collecting longitudinal field data, I identified proximate factors that influenced woylie stress physiology, including season, sex, parasite status and body condition. I also explored woylies’ response to translocation and a major bushfire that unexpectedly occurred at a field site. After translocation, FCM was significantly higher than before or at the time of translocation. However, the variation in FCM was not related to short-term changes in parasite infection dynamics. FCM was not significantly higher immediately after the fire, nor were there corresponding changes in parasite load or body condition compared to the months preceding the fire. I suggest that woylies can maintain homeostasis at least in the period immediately after a fire provided they are managed appropriately. Thus this thesis provides new knowledge on woylie stress physiology and highlights the value of innovative tools to advance woylie conservation as they continue to face stressors in the future.
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Mutton, Thomas Y. "Evolutionary biology of the Australian carnivorous marsupial genus Antechinus." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/104321/6/Thomas_Mutton_Thesis.pdf.

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Antechinus is an Australian genus of small carnivorous marsupials. Since 2012, the number of described species in the genus has increased by 50% from ten to fifteen. The systematic relationships of these new species and others in the genus have not been well resolved and a broad phylogeographic study of the genus is lacking. Moreover, little ecological information is known about these new species. Therefore, the present thesis examined the evolutionary biology of Antechinus in two complimentary components. The first component aimed to resolve the systematics and phylogeography of the genus Antechinus. The second component, at a finer spatiotemporal scale, aimed to improve understanding of the autecology, habitat use and risk of extinction within the group, with a focus on the recently named buff-footed antechinus, A. mysticus and a partially sympatric congener, A. subtropicus.
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Mason, Eugene D. "Ecology and conservation of a new carnivorous marsupial species: The silver-headed Antechinus (Antechinus argentus)." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/118725/1/Eugene_Mason_Thesis.pdf.

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Since 2012, five new species of carnivorous marsupial Antechinus have been described. One of these, the threatened silver-headed antechinus (Antechinus argentus), has a highly restricted distribution and occurs in low abundance. When the present study commenced, almost nothing was known of the ecology of the species. Therefore, the aim of this research was to provide foundational knowledge by investigating three main components of the species' ecology: 1. diet, 2. life-history, and 3. habitat use. The aims were achieved and the research resulted in a threatened species listing. The present thesis provides necessary recommendations for ongoing conservation management of the species.
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Benfer, David L. "Passive acoustic monitoring of calling activity provides an optimised field survey methodology for the threatened pouched frog, Assa darlingtoni." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/104558/1/David_Benfer_Thesis.pdf.

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This project examined various methods for detection of the threatened pouched frog, Assa darlingtoni in south-east Queensland. By utilising automatic sound recording devices the project has provided valuable information on the calling behaviour of the species that will greatly aid in developing effective monitoring programs for this species and contribute to its conservation in the future.
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Gray, Emma L. "Ecology and status of a new species of carnivorous marsupial, the Black-Tailed Dusky Antechinus (A. Arktos) and its relationship with a sympatric congener, the Brown Antechinus (A. Stuartii)." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/112503/1/Emma_Gray_Thesis.pdf.

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Since 2012, the number of described species in the carnivorous marsupial genus Antechinus has increased by 50%. The present thesis aimed to collect and analyse fundamental ecological data for one newly described species, the black-tailed dusky antechinus, Antechinus arktos, about which virtually nothing was known. Population ecology and geographic range of the species was used to determine conservation status. The foundational ecological information detailed in this thesis concerning breeding biology, diet, activity patterns and optimal detection methods, will assist in planning future conservation initiatives of this endangered marsupial.
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Firestone, Karen B. "The application of molecular genetics to the conservation management of quolls, Dasyurus species (Dasyuridae : Marsupialia) /." 1999. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20010105.095232/index.html.

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Books on the topic "Marsupials Conservation"

1

Yvette, McCullough, ed. Kangaroos in outback Australia: Comparative ecology and behavior of three coexisting species. New York: Columbia University Press, 2000.

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Baker, Andrew, and Chris Dickman. Secret Lives of Carnivorous Marsupials. CSIRO Publishing, 2018. http://dx.doi.org/10.1071/9781486305155.

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Most living carnivorous marsupials lead a secretive and solitary existence. From tiny insect eaters to the formidable Tasmanian Devil, Secret Lives of Carnivorous Marsupials offers rare insight into the history and habits of these creatures – from their discovery by intrepid explorers and scientists to their unique life cycles and incredible ways of hunting prey. Secret Lives of Carnivorous Marsupials provides a guide to the world’s 136 living species of carnivorous marsupials and is packed with never-before-seen photos. Biogeography, relationships and conservation are also covered in detail. Readers are taken on a journey through remote Australia, the Americas and dark, mysterious New Guinea – some of the last truly wild places on Earth. The book describes frenzied mating sessions, minuscule mammals that catch prey far larger than themselves, and extinct predators including marsupial lions, wolves and even sabre-toothed kangaroos.
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1951-, Kennedy Michael, and IUCN/SSC Australasian Marsupial and Monotreme Specialist Group., eds. Australasian marsupials and monotremes: An action plan for their conservation. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources, 1992.

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Jones, Menna, Chris Dickman, and Mike Archer. Predators with Pouches. CSIRO Publishing, 2003. http://dx.doi.org/10.1071/9780643069862.

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Predators with Pouches provides a unique synthesis of current knowledge of the world’s carnivorous marsupials—from Patagonia to New Guinea and North America to Tasmania. Written by 63 experts in each field, the book covers a comprehensive range of disciplines including evolution and systematics, reproductive biology, physiology, ecology, behaviour and conservation. Predators with Pouches reveals the relationships between the American didelphids and the Australian dasyurids, and explores the role of the marsupial fauna in the mammal community. It introduces the geologically oldest marsupials, from the Americas, and examines the fall from former diversity of the larger marsupial carnivores and their convergent evolution with placental forms. The book covers all aspects of carnivorous marsupials, including interesting features of life history, their unique reproduction, the physiological basis for early senescence in semelparous dasyurids, sex ratio variation and juvenile dispersal. It looks at gradients in nutrition—from omnivory to insectivory to carnivory—as well as distributional ecology, social structure and conservation dilemmas.
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Kennedy, Michael. Australasian Marsupials and Monotremes: An Action Plan for Their Conservation. World Conservation Union, 1992.

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McCullough, Dale R., and Yvette McCullough. Kangaroos in Outback Australia. Columbia University Press, 2000.

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Patent, Dorothy Hinshaw. Saving the Tasmanian Devil: How Science Is Helping the World's Largest Marsupial Carnivore Survive. Houghton Mifflin Harcourt Publishing Company, 2019.

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Jaye, Penny, and Alicia Rogerson. One Potoroo. CSIRO Publishing, 2021. http://dx.doi.org/10.1071/9781486314652.

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When a bushfire destroys Potoroo’s home, he becomes one of the last surviving Gilbert’s Potoroos at Two Peoples Bay in Western Australia. Frightened, hurt and alone, Potoroo needs a new home – somewhere safe from predators and with plenty of his favourite food. Luckily, a team of conservationists know where Potoroo can go to be safe. One Potoroo: A Story of Survival is a beautifully illustrated book about the world’s most endangered marsupial, the Gilbert’s Potoroo, and the conservation work that has kept this unique Australian alive. Reading level varies from child to child, but we recommend this book for ages 6–9.
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Richardson, Ken. Australia's Amazing Kangaroos. CSIRO Publishing, 2012. http://dx.doi.org/10.1071/9780643097407.

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This book provides an authoritative source of information on kangaroos and their relatives. Topics include: species characteristics and biology, adaptations and function, and conservation. The book also discusses culling and the commercial kangaroo harvest, as well as national attitudes to kangaroos and their value for tourism. There are 71 recognised species of kangaroo found in Australasia. Of these, 46 are endemic to Australia, 21 are endemic to the island of New Guinea, and four species are found in both regions. The various species have a number of common names, including bettong, kangaroo, pademelon, potoroo, quokka, rat kangaroo, rock wallaby, tree kangaroo, wallaby and wallaroo. Illustrated in full colour, Australia’s Amazing Kangaroos will give readers insight into the world of this intriguing marsupial – an animal that has pride of place on the Australian Coat of Arms.
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Moyal, Ann. Koala. CSIRO Publishing, 2008. http://dx.doi.org/10.1071/9780643096226.

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The koala is both an Australian icon and an animal that has attained ‘flagship’ status around the world. Yet its history tells a different story. While the koala figured prominently in Aboriginal Dreaming and Creation stories, its presence was not recorded in Australia until 15 years after white settlement. Then it would figure as a scientific oddity, despatched to museums in Britain and Europe, a native animal driven increasingly from its habitat by tree felling and human settlement, and a subject of relentless hunting by trappers for its valuable fur. It was not until the late 1920s that slowly emerging protective legislation and the enterprise of private protectors came to its aid. This book surveys the koala’s fascinating history, its evolutionary survival in Australia for over 30 million years, its strikingly adaptive physiognomy, its private life, and the strong cultural impact it has had through its rich fertilisation of Australian literature. The work also focuses on the complex problems of Australia’s national wildlife and conservation policies and the challenges surrounding the environmental, economic and social questions concerning koala management. Koala embraces the story of this famous marsupial in an engaging historical narrative, extensively illustrated from widely sourced pictorial material.
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Book chapters on the topic "Marsupials Conservation"

1

Rodger, John C. "Marsupials: Progress and Prospects." In Reproductive Sciences in Animal Conservation, 309–25. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23633-5_11.

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Legge, Sarah, Matt Hayward, and Andrew Weeks. "Novel Conservation Strategies to Conserve Australian Marsupials." In American and Australasian Marsupials, 1–30. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-88800-8_56-1.

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Martin, Gabriel M., Baltazar González, Federico Brook, and Adrian Monjeau. "Conservation Biogeography of Living American Marsupials: Didelphimorphia, Microbiotheria, and Paucituberculata." In American and Australasian Marsupials, 1–29. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-88800-8_25-1.

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Johnston, Stephen D., and William V. Holt. "Using the Koala (Phascolarctos cinereus) as a Case Study to Illustrate the Development of Artificial Breeding Technology in Marsupials: an Update." In Reproductive Sciences in Animal Conservation, 327–62. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23633-5_12.

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Rhind, Susan G. "Direct impacts of logging and forest management on the brush-tailed phascogalePhascogale tapoatafa and other arboreal marsupials in a jarrah forest of Western Australia." In Conservation of Australia's Forest Fauna, 639–55. P.O. Box 20, Mosman NSW 2088: Royal Zoological Society of New South Wales, 2004. http://dx.doi.org/10.7882/fs.2004.036.

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Lindenmayer, D. B. "Forest Resource Management and the Conservation of Arboreal Marsupials in Central Victoria, Southeastern Australia." In The GeoJournal Library, 24–37. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0343-2_4.

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Eldridge, Mark D. B. "Marsupial Population and Conservation Genetics." In Marsupial Genetics and Genomics, 461–97. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9023-2_22.

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Moore, Ben D., Ian R. Wallis, Karen J. Marsh, and William J. Foley. "The role of nutrition in the conservation of the marsupial folivores of eucalypt forests." In Conservation of Australia's Forest Fauna, 549–75. P.O. Box 20, Mosman NSW 2088: Royal Zoological Society of New South Wales, 2004. http://dx.doi.org/10.7882/fs.2004.031.

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Johnston, Stephen D., and William V. Holt. "The Koala (Phascolarctos cinereus): A Case Study in the Development of Reproductive Technology in a Marsupial." In Reproductive Sciences in Animal Conservation, 171–203. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-0820-2_9.

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Belcher, Chris. "The largest surviving marsupial carnivore on mainland Australia: the Tiger or Spotted-tailed QuollDasyurus maculatus, a nationally threatened, forest-dependent species." In Conservation of Australia's Forest Fauna, 612–23. P.O. Box 20, Mosman NSW 2088: Royal Zoological Society of New South Wales, 2004. http://dx.doi.org/10.7882/fs.2004.034.

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