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Letteratura scientifica selezionata sul tema "Possums"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 luglio 2024

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Articoli di riviste sul tema "Possums"

Day, T. D., e C. E. O'Connor. "Behavioural Adaptation of Brushtail Possums (Trichosurus Vulpecula) to Captivity". Animal Welfare 9, n. 4 (novembre 2000): 413–20. http://dx.doi.org/10.1017/s0962728600022995.

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AbstractBrushtail possums, Trichosurus vulpecula, are New Zealand's most serious vertebrate pest, facilitating the spread of bovine tuberculosis to livestock, and causing severe damage to native flora and fauna. Possum control has become a national research priority, involving the use of large numbers of captive possums. Successful adaptation of these animals to captivity is important for the welfare of the possums and for the validity of experimental results. The objective of this study was to determine, by behavioural means, the time individually caged possums required for adaptation to captivity. We used a simple behavioural measure - a possum's daily response to a caregiver at feeding (a feeding test) - to assess changes in the behaviour of possums after arrival in captivity. We also recorded changes in possum body weight throughout this period. Initially most possums ‘avoided’ the caregiver, but within 7 days more than 80 per cent of animals no longer avoided. ‘In den’ and ‘approach’ behaviour rapidly increased for the first 14 days in captivity, after which den use became less common as more possums ‘approached’ the caregiver. By day 29 of captivity, more than 80 per cent of the possums ‘approached’ the caregiver. The possums’ body weight did not change significantly during the first 14 days in captivity, but had increased significantly by day 28, and continued to increase for at least 6 weeks after capture. These data suggest that most possums adapt to captivity within 4 weeks. For the welfare of possums and the reliability of experimental results, we recommend that possums are not used in experiments until at least 4 weeks after capture.

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Fink, Lyndsay. "Native Australian Mammals Possums – Common Ringtail Possum (xiv)". Ballarat Naturalist (1993:Jul) (luglio 1993): 8. http://dx.doi.org/10.5962/p.384213.

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Kroll, Jeri. "Possums". New Writing 1, n. 2 (15 ottobre 2004): 133. http://dx.doi.org/10.1080/14790720408668930.

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Call, Melissa J., e Ashleigh S. Davey. "Hello Possums!" Immunology & Cell Biology 99, n. 7 (28 giugno 2021): 674–76. http://dx.doi.org/10.1111/imcb.12483.

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Russell, Tracey C., Catherine A. Herbert e James L. Kohen. "High possum mortality on urban roads: implications for the population viability of the common brushtail and the common ringtail possum". Australian Journal of Zoology 57, n. 6 (2009): 391. http://dx.doi.org/10.1071/zo09079.

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Animal–vehicle collisions impact wildlife populations and in the northern suburbs of Sydney, both the common brushtail possum (Trichosurus vulpecula) and the common ringtail possum (Pseudocheirus peregrinus) are killed in large numbers. Over a two-year period almost 600 road-killed possums were observed from 217 road surveys covering over 7800 km, equating to 5.45 possums per week over the 36-km study area. Surveys were conducted along roads where the environment ranged from low-rise suburban to continuous sclerophyll forest. Significantly more ringtail possums were observed as road-kill, outnumbering brushtail possums by almost three to one. No sex bias was found amongst road-killed ringtail possums; however, seasonal trends and weight fluctuations were significant, with both males and females being at their lowest weights during the autumn breeding season. For brushtail possums a bias towards young males was observed. Sex and weight of road-killed brushtail possums were comparable to live-trap data from a previous study in the same location. In areas of such high possum mortality, wildlife managers may need to take action to mitigate possum road-kill.

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Potts, Annie. "Kiwis Against Possums: A Critical Analysis of Anti-Possum Rhetoric in Aotearoa New Zealand". Society & Animals 17, n. 1 (2009): 1–20. http://dx.doi.org/10.1163/156853009x393738.

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AbstractThe history of brushtail possums in New Zealand is bleak. The colonists who forcibly transported possums from their native Australia to New Zealand in the nineteenth century valued them as economic assets, quickly establishing a profitable fur industry. Over the past 80 or so years, however, New Zealand has increasingly scapegoated possums for the unanticipated negative impact their presence has had on the native environment and wildlife. Now this marsupial—blamed and despised—suffers the most miserable of reputations and is extensively targeted as the nation's number one pest. This paper examines anti-possum rhetoric in New Zealand, identifying the operation of several distinct—yet related—discourses negatively situating the possum as (a) an unwanted foreign invader and a threat to what makes New Zealand unique; (b) the subject of revenge and punishment (ergo the deserving recipient of exploitation and commodification); and (c) recognizably “cute, but...” merely a pest and therefore unworthy of compassion. This paper argues that the demonization of possums in New Zealand is overdetermined, extreme, and unhelpfully entangled in notions of patriotism and nationalism.

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Runcie, Myfanwy J. "Movements, dens and feeding behaviour of the tropical scaly-tailed possum (Wyulda squamicaudata)". Wildlife Research 26, n. 3 (1999): 367. http://dx.doi.org/10.1071/wr98015.

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I used trapping and radio-telemetry to study a population of scaly-tailed possums (Wyulda squamicaudata) in the Kimberley region of Western Australia. Radio-tracking of five adults over eight days provided detailed information on dens, and on size and shape of the home range, and facilitated nocturnal observations. W. squamicaudata used four different types of rock formations for diurnal dens: rockpiles, sunken rockpiles, large rock slabs and underground rock crevices. Radio-tagged possums of both sexes nested alone, used multiple dens and had overlapping home ranges. Both tagged and untagged possums appeared to be solitary and foraged alone. The average size of the home range was 1.0 ha (range 0.03–2.0 ha). Estimates of density ranged from 2.3 to 4.6 possums per hectare. Scaly-tailed possums fed on leaves of four species of trees (Xanthostemon eucalyptoides, X. paradoxus, Eucalyptus spp., and Planchonia careya) as well as the flowers and seeds of a perennial herb (Trachymere didiscordis). Feeding in trees is aided by the rough scaly tail, which sometimes supports the possum’s full body weight. At this study site W. squamicaudata is sympatric with the rock-haunting possum (Petropseudes dahli), and they may compete for food and den resources.

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Holland, O. J., P. E. Cowan, D. M. Gleeson e L. W. Chamley. "413. Genetic diversity of the major histocompatibility complex and response to immunocontraceptives in the brushtail possum". Reproduction, Fertility and Development 20, n. 9 (2008): 93. http://dx.doi.org/10.1071/srb08abs413.

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The brushtail possum (Trichosurus vulpecula) is a major invasive pest in New Zealand. One option for its control is the use of an immunocontraceptive vaccine, a method of fertility control that employs the immune system to attack reproductive cells or proteins. Initial trials of immunocontraceptive vaccines have shown individual variation in immune response. Concerns have been raised that the use of such a vaccine on wild populations could result in selection for possums that remain fertile because of low or no response, and subsequently negate the efficacy of the vaccine. Therefore, it is important to establish the basis of this variation. The major histocompatibility complex (MHC) is an important component of the immune system which influences the nature of immune responses. This study aimed to document genetic variation in MHC loci of New Zealand possums, and investigate whether there was a relationship between MHC haplotypes and individual immune responses to immunocontraceptive vaccines. We used known marsupial (possum, red-necked wallaby, tammar wallaby, opossum) MHC sequences to design PCR primers for possum MHC loci. The variability of these loci was screened in populations of possums from locations throughout New Zealand, and between individuals with known responses to immunocontraceptive vaccines. We identified 71 novel class I and class II MHC alleles and observed significant variation in allele identity and frequency between geographically separate possum populations in New Zealand. Comparisons of MHC haplotype and immunocontraceptive vaccine response showed that some of these alleles differ between high-responding and low-responding possums. The considerable variation we have found in the possum MHC, combined with differences in the occurrence of MHC genes at locations around New Zealand, provide a potential basis for the observed variability of individual possum's responses to immunocontraceptive vaccines.

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Coleman, JD. "Distribution, Prevalence, and Epidemiology of Bovine Tuberculosis in Brushtail Possums, Trichosurus-Vulpecula, in the Hohonu Range, New-Zealand". Wildlife Research 15, n. 6 (1988): 651. http://dx.doi.org/10.1071/wr9880651.

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Over a 12-month period, 1467 brushtail possums were trapped and then killed or were poisoned along sampling lines on pasture-forest margins and in nearby forest. An additional 334 possums were shot on adjacent farm land. All possums were necropsied, and 141 had macroscopic lesions typical of bovine tuberculosis. Infected possums occurred most commonly in small foci of 2-5 individuals along pasture-forest margins; the furthest from pasture that an infected animal was taken was 4050 m. Lesions occurred in possums of all ages in both sexes, but disease prevalence was highest in immature males and during autumn and winter. Infected possums bred as successfully as non-infected individuals, but were of lighter body weight. Macroscopic lesions occurred in a wide range of visceral and lymph node sites. Lesions were most common in the lungs and axillary nodes, and occasionally formed open sinuses from which infected possums could shed M. bovis readily, and thus were likely to be highly infective. Evidence suggested that disease transmission occurs most frequently on pasture-forest margins, where possum numbers are greatest and possum and cattle mix most freely.

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Thomas, M. D., F. W. Maddigan, J. A. Brown e M. Trotter. "Optimising possum control using encapsulated cyanide (Feratoxreg;)". New Zealand Plant Protection 56 (1 agosto 2003): 77–80. http://dx.doi.org/10.30843/nzpp.2003.56.6089.

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Feratoxreg; is an encapsulated cyanide product used extensively throughout New Zealand for possum control It has advantages of being lightweight and is not legally required to be checked daily as are leghold traps This study evaluated delivery methods for Feratoxreg; by comparing the number of possums killed by Feratoxreg; treatments with the number of possums killed by an industry accepted standard ie possum captures in leghold traps When Feratoxreg; was used in plastic bags coated with a rat repellent and fixed to wires located at 5 m spacings significantly less possums were killed than in traps However when applied in bait stations at 50 m intervals Feratoxreg; killed as many possums as traps especially when possums were prefed nontoxic bait Feratox was also as effective as traps when used in paper bags located on trees 20 m apart and used with a flour and icing sugar blaze This study suggests that Feratoxreg; can provide a more costeffective alternative to trapping in areas with low to medium possum densities

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Più fonti

Tesi sul tema "Possums"

Osugi, Mizuho. "Measuring Auditory Thresholds in Brushtail Possums (Trichosurus Vulpecula)". The University of Waikato, 2008. http://hdl.handle.net/10289/2422.

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A total of 9 brushtail possums (Trichosurus vulpecula) were trained to perform a two-manipulanda, conditional discrimination task. The possums learned to press a right lever in the presence of a tone (80 dB(A)) during tone-on trials, and a left lever in the absence of the tone on tone-off trials. Overall sessions of 11 conditions contained tone frequency between 100 Hz and 35 kHz were tested. Each condition contained training and then probe sessions. In training sessions, the possums were presented with tone-on and tone-off trials, pseudo-randomly. Once the possums responded with over 90% accuracy for five consecutive sessions, then probe sessions were introduced. Probe sessions were similar to the training sessions, except that the tone intensity for tone-on trials was reduced by 8 dB(A) across blocks of 20 trials until their response accuracy in a block fall below 60% or reached 24 dB(A). Data were analysed using overall percentages correct and log d analysis. Both measures indicated that overall response accuracy decreased for all possum as tone intensity reduced. Based on these data analyses, threshold values were calculated using the criterions at 75% correct and a log d of 0.48. The threshold values for each possum and across all possums were plotted as a function of the tone frequency to produce an audiogram. A curvilinear regression was fitted for each threshold values. The functions of both measures were very similar. Both audiograms showed that the possums could hear the tones between 100 Hz and 35 kHz, and were most sensitive to tones between 15 and 20 kHz. This experiment involved many difficulties with producing and measuring tones especially outside of human hearing range. Due to these difficulties, several problems and concerns were raised during the experiment, these were discussed in this study and also recommendations for future research were then presented.

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Eymann, Jutta. "Management of urban common brushtail possums (Trichosurus vulpecula)". Doctoral thesis, Australia : Macquarie University, 2007. http://hdl.handle.net/1959.14/6.

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Thesis by publication -- 8 co-authored articles.
Thesis (PhD)--Macquarie University, Division of Environmental and Life Sciences, Department of Biological Sciences.
Includes bibliographical references.
Preface -- Management issues of urban common brushtail possums (Trichosurus vulpecula): a loved or hated neighbour -- Effects of deslorelin implants on reproduction in the common brushtail possum (Trichosurus vulpecula) -- Brushtail possums (Trichosurus vulpecula) in metropolotan Sydney: population biology and response to contraceptive implants -- Strategic survey for Toxoplasma gondii and Neospora caninum in the common brushtail possum (Trichosurus vulpecula) from urban Sydney, Australia -- Leptospirosis serology in the common brushtail possum (Trichosurus vulpecula) from urban Sydney, Australia -- Conclusions.
The common brushtail possum (Trichosurus vulpecula) is indeed a common inhabitant of many Australian citites, and one of the few marsupials that has adapted well to the urban environment. Their close proximity to people provides a great opportunity to experience native wildlife in the backyard, however, their utilization of house roofs, bold behaviour and appetite for garden plants often leads to conflict with householders. Population numbers are sufficiently high to require ongoing management to minimise negative impacts for humans and brushtail possums alike in a socially acceptable manner. The aim of this thesis was to identify current management issues and address the need for improved and novel management strategies. The potential of slow-release implants, containing the GnRH agonist deslorelin, as a contraceptive agent for brushtail possums was tested on a captive population. Males appeared resistant to treatment, but deslorelin was found to inhibit reproduction in female brushtail possums for at least one breeding season, making it a promising tool to control fertility in some wild populations. A further aim was to trial deslorelin implants on a wild urban population, to collect more information about the urban biology of this species and to point out issues which have previously not been addressed. Close proximity and interaction of urban brushtail possums with humans and their domestic animals can increase the risk of disease exposure and transmission and influence the health of wild populations. Serosurveys showed that animals were readily exposed to Leptospira spp. and Toxoplasma gondii. This thesis also provides the first data on brushtail possum dispersal in urban areas, knowledge which is highly relevant to the development of management strategies such as fertility control. The findings from this research broaden our knowledge about urban brushtail possums and should assist wildlife authorities in developing alternative or improved management procedures.
Mode of access: World Wide Web.
xxv, 287 p. ill., maps

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Rivas, Ryan. "Good Fences and Dead Possums and Other Short Stories". Honors in the Major Thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/797.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf
Bachelors
English
Arts and Sciences
Creative Writing

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Morgan, D. R. "Maximising the effectiveness of aerial 1080 control of possums (Trichosurus vulpecula)". Diss., Connect to this title online, 2004. http://theses.lincoln.ac.nz/public/adt-NZLIU20060911.123107/index.html.

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Morgan, David R. "Maximising the effectiveness of aerial 1080 control of possums (Trichosurus vulpecula)". Lincoln University, 2004. http://hdl.handle.net/10182/20.

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Aerial control using 1080 (sodium monofluoroacetate) baits is widely used in New Zealand for the control of introduced brushtail possums (Trichosurus vulpecula), with the aim of protecting national conservation and agricultural values from these damaging pests. This thesis integrates research, completed over 25 years, that was motivated by growing recognition in the 1970s of the extent of possum impacts and the need to improve the effectiveness and efficiency of the control operation. Field research assessed the palatability of three types of cereal-based pellet baits and carrot baits in different regions, habitat types and seasons. Palatability was assessed by the consumption of the different bait types presented independently of each other on 15-30 plots, with rotation of bait types at plots on successive nights to provide equal exposure to each bait type. There was regional variation in possums' bait preferences, possibly reflecting genotypic differences, whereas seasonal variation was less evident. Carrot bait was preferred or equally preferred to cereal bait in 14 out of 20 field trials. The proportion of possums eating baits was then investigated by, firstly, developing a technique for tracing bait acceptance using rhodamine B, a UV-fluorescent dye. In four field trials, more than 95% of possums accepted three types of dye-marked bait, eliminating bait refusal as a major reason for low kills in winter control operations. In a fifth trial, conducted in summer, only 68% of possums accepted bait suggesting that seasonal availability of favoured foods may influence bait acceptance. Since possums must encounter baits before deciding whether to eat them, field studies were undertaken to assess the coverage achieved in normal aerial baiting operations. Large gaps, up to 400 m in width, were often found between baiting swaths; these could allow some possums to survive. A controlled field experiment, using acceptance of rhodamine-dyed bait as a measure of effectiveness, showed that bait distribution was least accurate where flight paths were not marked. Where gaps of 100 m between flight paths were deliberately created, bait acceptance was slower and less than where coverage was complete. Sowing baits at 3 kg/ha was as effective as at 10 kg/ha, indicating the potential for substantially reducing operational costs by using machinery capable of faultlessly distributing baits at low rates. Navigational guidance systems were evaluated and found to improve the accuracy of bait distribution. During 1993-1997, when a lower sowing rate of 5 kg/ha was adopted operationally by regional managers, control effectiveness was unchanged but annual savings of around $9 million accrued. Because of the lack of suitable sowing machinery, a bucket was developed to permit faultless distribution of baits at lower rates, demonstrating the possibility of yet further cost-savings. The possibility of seasonal food availability affecting bait acceptance was investigated in three different forest habitats. Dyed baits were aerially distributed on 100 ha at each site in each season over two years. In each trial, fat-based condition indices of possums were calculated and the abundance of possum-preferred plant foods described. Bait acceptance was consistently high (85-100%) in the 24 trials, and was not influenced by either condition or availability of preferred foods. It seems likely that seasonal variation in operational effectiveness is caused by either the availability of sharply seasonal, scarce foods that possums may feed on intensively for brief periods, or by warmer temperatures that render 1080 less effective. The influence of 1080 on acceptance of (rhodamine-dyed) baits was investigated in a field trial. Examination of possums for dye-marking showed that 25% of possums refused to eat either a lethal quantity of bait or any bait at all, compared with 98% of possums eating non-toxic bait. This indicated that 1080 is aversive to possums, which is a potential major reason for their surviving control operations. Pen trials were therefore conducted to further examine the problem and to seek solutions. Toxic carrot baits were rejected by 27.5% of possums, equally by smell and taste aversion, whereas toxic cereal pellets were rejected by 34%, mainly by taste aversion. Orange and cinnamon were shown to be among the most preferred of 42 flavours tested and, when applied to toxic baits, 1080 was effectively masked. Bait refusal was reduced to ≤7%, the same as that recorded for possums presented with flavoured non-toxic baits. For long-term control of possum populations, aerial 1080 baiting can be used sequentially with other poisoning methods. However, the compatibility of these methods is dependent on the likelihood of possums developing bait shyness if sublethally dosed. Studies were therefore conducted to characterise and compare the four main toxicants used (1080, cyanide, cholecalciferol and brodifacoum) for induction and mitigation of bait shyness. Shyness was induced in approximately 80% of possums sublethally dosed with cyanide, 60% with 1080, 20% with cholecalciferol, and 0% with brodifacoum. Cyanide and 1080 shyness were found to persist in many possums for at least 12 and 24 months, respectively. Use of alternative bait types, and of baits containing an alternative slow-acting toxin (brodifacoum) were shown to be effective ways of overcoming shyness. This, and other related research, is reviewed to provide operational specifications that maximise the likelihood that all targeted possums will (i) encounter bait, (ii) eat it, and (iii) die. The likely future use of aerial 1080 baiting is described and the technological, economic, environmental and social constraints on its sustainability are discussed. Finally, the uptake of the research by possum managers is considered, and areas identified in the thesis where information is incomplete are summarised as prioritised topics for further research.

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Roberts, Karen K. Biological Earth &amp Environmental Sciences Faculty of Science UNSW. "Oligo-Miocene pseudocheirid diversity and the early evolution of ringtail possums (Marsupialia)". Awarded By:University of New South Wales. Biological, Earth & Environmental Sciences, 2008. http://handle.unsw.edu.au/1959.4/41517.

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The marsupial family Pseudocheiridae is currently known from seventeen species of six genera in Australia and New Guinea. These small to medium-sized arboreal animals are nocturnal and folivorous. Extinct pseudocheirids are recognised from several mid to late Cenozoic fossil localities across Australia and New Guinea. The single largest collection of pseudocheirid fossils has been recovered from the Oligo-Miocene freshwater carbonates of the Riversleigh World Heritage Area in northwest Queensland. This collection, which includes the first pseudocheirid cranial fossils, forms the basis of this investigation. Three new extinct pseudocheirid genera together containing four species are identified and described. Six new species of Paljara, Marlu and Pildra are also described from Riversleigh. Two of the new Marlu species are reported from South Australia??s Leaf Locality. From Riversleigh, Marlu kutjamarpensis is identified and additional material of Paljara tirarensae and P. nancyhawardae documented. New species attributed to Marlu and Pildra necessitate revision of those genera. Cranial material is identified for three of the new species. The rostrum of archaic pseudocheirids is shorter than in extant forms but cranial morphology is similar overall. Phylogenetic relationships of all extinct pseudocheirids are analysed. They include all new and previously described species, most of which have never been examined in a parsimony-based analysis. Two hypotheses of pseudocheirid evolution are presented: a paired lineage hypothesis and a single lineage hypothesis. Both hypotheses demonstrate that species of Paljara are not the most plesiomorphic pseudocheirids, Marlu praecursor does not cluster with other species of Marlu, the new genus Gawinga is most closely related to Paljara and there are no representatives of the extant genus Pseudochirops in any pre-Pliocene locality. All extant pseudocheirids cluster to form a crown clade sister to a stem lineage of Pseudokoala and Marlu species. Pseudocheirids are found in all Oligo-Miocene faunal zones of Riversleigh. Species of Paljara and Marlu are most frequently recovered from Faunal Zone B and C deposits respectively. Four pseudocheirid species biostratigraphically correlate the Kutjamarpu local fauna of the Leaf Locality with Faunal Zones B and C of Riversleigh, suggesting an early to middle Miocene age for both deposits. Modern pseudocheirids first evolved no later than the late Miocene from a descendant of the Marlu + Pseudokoala lineage when all other Oligo-Miocene pseudocheirids became extinct. At least three pseudocheirid lineages dispersed to New Guinea approximately five million years ago, but ecological barriers probably prevented subsequent migrations between the two landmasses.

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Anthony, Clare. "How dependent are honey possums, Tarsipes rostratus, on their key winter food-plants?" Thesis, Anthony, Clare (1996) How dependent are honey possums, Tarsipes rostratus, on their key winter food-plants? Honours thesis, Murdoch University, 1996. https://researchrepository.murdoch.edu.au/id/eprint/40780/.

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The study aimed to examine the dependence of the honey possum, Tarsipes rostratus on the winter-flowering plants Banksia baueri, Dryandra plumosa and D. cuneata. Sampling of honey possum populations was carried out in six paired Grids in the Fitzgerald River National Park. The capture rate and various other population parameters was measured before and after the removal of flowers of these species in the Treatment Grids and then compared with populations in the Control Grids. Throughout the study, the flowering pattern of plants visited by honey possums was examined. Different plant species in the Proteaceae and Myrtaceae families had highly seasonal flowering patterns and there were several species in flower in each sampling month, suggesting that a continuous nectar supply was available to Tarsipes throughout the year. A peak in flowering occurred during the winter and spring months. Banksia baueri flowered most prolifically in July and the flowering intensity of D. cuneata ' increased through the winter to reach a peak in the early spring in most areas. The flowering of D. plumosa showed much less seasonal variation and flowered continuously for the duration of the study. During the winter, the population density of Tarsipes was limited by the supply of nectar and pollen and, during the manipulation, numbers were lower than expected and did not rise to their usual winter peak. The removal of B. baueri flowers had the greatest effect whereas removal of D. plumosa had the least effect. These changes in population size occurred as a result of the movement of individuals, particularly males, out of the cut Grids to areas with a greater abundance of nectar and pollen. Movement between Grids was negligible suggesting that honey possums that moved out of the Treatment Grids only moved short distances to the nearest flowering plants. Flower removal did not appear to influence dramatically the structure of honey possum populations. During the manipulation, the proportion of females in the Treatment populations increased as a result of the movement of males out of the area. However, the populations that remained in these Grids did not differ greatly in structure from those in the Control Grids. There was no change in the number of females with pouch young and, hence, the age structure of the populations remained the same. There was also no difference in the proportion of recaptures in each Grid. Flower removal also appeared not to have a deleterious effect upon the body condition of individuals. Tarsipes visited flowers from a wide range of species in the Proteaceae and Myrtaceae families and their diet was highly seasonal. When the food supply was reduced in the winter, honey possums did not feed on flowers from any new species of plant. Rather, they appeared to feed more intensively on species that were already a component of their diet. This applied particularly to Calothamnus gracilis and, to a lesser extent, D. nivea, B. gardneri var. hiemlis and B. coccinea. Finally, no significant relationship was found between the distribution of captures within each Grid and the distribution of B. baueri, D. plumosa and D. cuneata plants, suggesting that honey possums forage at random for nectar within their habitat.

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Herron, Fiona Michelle. "A study of digesta passage in rabbits and ringtail possums using markers and models". Thesis, The University of Sydney, 2002. http://hdl.handle.net/2123/483.

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The common ringtail possum (Pseudocheirus peregrinus), a member of the family Pseudocheiridae, is an arboreal folivorous marsupial that feeds predominantly on Eucalyptus foliage. Contrary to the expectation that small body size would inhibit utilisation of a diet containing such high levels of lignified fibre because of relatively low gut volume to body mass ratios and relatively high mass-specific metabolic rates and nutrient requirements (Hume 1999), the ringtail possum is able to survive solely on a diet of Eucalyptus foliage. The rabbit (Oryctolagus cuniculus) is a terrestrial herbivore and is a member of the family Leporidae that feeds predominantly on grasses. The rabbit was proposed as a digesta flow model for the ringtail possum since both are caecotrophic (periodically re-ingest caecal contents) and both are proposed to exhibit a colonic separation mechanism (CSM) where fluids and small, easily digested particles are preferentially returned to the caecum. The rabbit is of value for the modelling process since it is more accessible for experimental manipulation than the ringtail possum. This study investigated a proposal to use digesta passage through the gastrointestinal tract (GIT) of the rabbit as a model of digesta passage for the ringtail possum on the basis that both are caecotrophic caecum fermenters. A number of potential problems were identified with this proposal and investigation of these problems formed the basis for the research described in this thesis. Two main areas were identified as being potentially problematic: 1) fundamental flaws with the particulate markers used in digesta rate of passage studies; and 2) differences in animal behaviour and natural diet between the two subject species which suggested different digestive strategies and hence different patterns of digesta flow through the GIT. The proposed digesta passage markers were lanthanide metals (Dy, Tm, Eu and Yb) attached to either fibrous particles (1200 - 600�m) or formalin-fixed rumen bacteria (20 � 0.2�m). These markers were shown to not be of the assumed size classes and the extent of lanthanide metal binding differed between the four metals used. An effect due to method of dosing was also observed. The findings of marker inconsistencies caused major limitation to model development and further research is necessary to clarify these markers. The proposal to use digesta flow in the rabbit GIT as a model for digesta flow in the ringtail possum was shown to be idealistic due to the differences in anatomy and behaviour observed between the two herbivores. Laboratory observations, time series analysis and compartmental modelling confirmed the differences between the animals. This study showed: 1) the GIT of the rabbit was more complex both anatomically and functionally than that of the ringtail possum; 2) behaviour affecting digesta passage of the rabbit and ringtail were different and; 3) compartmental models confirmed the anatomical and behavioural findings. Digesta passage in the rabbit could not be modelled mathematically using data on digesta passage due to complexities of the system. In contrast, a basic model was constructed for digesta passage in the ringtail possum. On the basis of these findings, the research hypothesis "that digesta passage in rabbits is similar to that in ringtail possums" was rejected.

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Herron, Fiona Michelle. "A study of digesta passage in rabbits and ringtail possums using markers and models". University of Sydney. Biology, 2002. http://hdl.handle.net/2123/483.

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Ricci, Mario. "The marsupial sperm tail cytoskeleton : a morphological and biochemical study /". Title page, table of contents and abstract only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phr4911.pdf.

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Libri sul tema "Possums"

Dobson, Rebecca Newsom. Possums run over their graves. Ozark, Mo: Yates Pub. Co., 1985.

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Patricia, Negus, a cura di. A tale of two honey possums. Subiaco, W.A: Honey Possum South-West, 2008.

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Jackson, Stephen, e Ross L. Goldingay. The biology of Australian possums and gliders. Chipping Norton, N.S.W: Surey Beatty and Sons, 2004.

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Warburton, B. Comparison of three methods for maintaining possums at low density. Wellington, N.Z: Dept. of Conservation, 2002.

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Nolan, Peter. Possums & bird dogs: Australian Army Aviation's 161 Reconnaissance Flight in South Vietnam. Crows Nest, NSW: Allen & Unwin, 2006.

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Australia. Australian Army Aviation Corps. Reconnaissance Flight, 161, a cura di. Possums & bird dogs: Australian Army Aviation's 161 Reconnaissance Flight in South Vietnam. Crows Nest, NSW: Allen & Unwin, 2006.

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Fox, Mem. Possum magic. Norwood, S. Aust: Omnibus/Puffin, 1989.

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Fox, Mem. Possum magic. Norwood, S. Australia: Omnibus, 1992.

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Fox, Mem. Possum magic. Nashville: Abingdon Press, 1987.

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Fox, Mem. Possum magic. Australia: Omnibus Books, 2004.

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Capitoli di libri sul tema "Possums"

Williams, Ray. "Possums and Gliders". In Care and Handling of Australian Native Animals, 97–108. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 1990. http://dx.doi.org/10.7882/rzsnsw.1990.011.

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Matthews, Alison, Daniel Lunney, Kelly Waples e Jeff Hardy. "Brushtail Possums: “Champion of the suburbs” or “Our tormentors”?" In Urban Wildlife, 159–68. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2004. http://dx.doi.org/10.7882/fs.2004.093.

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deLacey, Claire, e Steven Chamberlain. "Planting for possums: prime pickings or prohibited provender? A discussion paper from a horticultural and wildlife care perspective." In Pest or Guest, 99–116. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2007. http://dx.doi.org/10.7882/fs.2007.015.

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Wilks, Sarah, Tracey Russell e Jutta Eymann. "Valued guest or vilified pest? How attitudes towards urban brushtail possums Trichosurus vulpecula fit into general perceptions of animals". In Too close for comfort, 33–44. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 2008. http://dx.doi.org/10.7882/fs.2008.007.

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Hassan, Mohammad Mahbubul. "Possum Fiber—A Wonderful Creation of Nature". In Sustainable Fibres for Fashion Industry, 59–88. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0522-0_3.

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Cooke, Raylene, Fiona Hogan, Bronwyn Isaac, Marian Weaving e John G. White. "Powerful Owls: Possum Assassins Move into Town". In Urban Raptors, 152–65. Washington, DC: Island Press/Center for Resource Economics, 2018. http://dx.doi.org/10.5822/978-1-61091-841-1_11.

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Hinze, Ralf. "Polytypic Values Possess Polykinded Types". In Lecture Notes in Computer Science, 2–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/10722010_2.

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Flammer, August. "Possum, ergo Sum—Nequeo, ergo Sum qui Sum". In The Self in European and North American Culture: Development and Processes, 333–49. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0331-2_24.

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Devitt, Michael. "Stirring the Possum: Responses to the Bianchi Papers". In Philosophical Studies Series, 371–455. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47641-0_19.

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Xue, Bin, Robert W. Williams, Christopher J. Oldfield, Gerard K. M. Goh, A. Keith Dunker e Vladimir N. Uversky. "Do Viral Proteins Possess Unique Features?" In Flexible Viruses, 1–34. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118135570.ch1.

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Atti di convegni sul tema "Possums"

Biedron, Eva M., e Larisa R. G. DeSantis. "STABLE ISOTOPE ECOLOGY OF EXTANT MOUNTAIN AND COMMON BRUSHTAIL POSSUMS". In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-308693.

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Biedron, Eva M., e Larisa R. G. DeSantis. "ASSESSING HOW POSSUMS RECORD THEIR LOCAL DIET AND ENVIRONMENT VIA STABLE ISOTOPES AND DENTAL MICROWEAR TEXTURES WITH IMPLICATIONS FOR PALEOECOLOGICAL ANALYSES". In 67th Annual Southeastern GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018se-312759.

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RUSCHKE, Alexander. "The POSSUMUS-Detector". In Technology and Instrumentation in Particle Physics 2014. Trieste, Italy: Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.213.0079.

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Ghobakhlou, A., X. Wang, P. Sallis, S. Inder e S. Blok. "Using WSN for possum management". In 2015 9th International Conference on Sensing Technology (ICST). IEEE, 2015. http://dx.doi.org/10.1109/icsenst.2015.7438485.

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Sell, Paulo Fylippe, Emerson Ribeiro de Mello e Roberto de Matos. "Atualização de Firmware em Sistemas Embarcados de Forma Segura e Confiável". In Anais Estendidos do Simpósio Brasileiro de Segurança da Informação e de Sistemas Computacionais. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/sbseg_estendido.2021.17354.

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Uma atualização confiável de firmware garante que um dispositivo não ficará inutilizável ao final do processo. Uma atualização segura garante que somente firmware autênticos possam ser instalados no dispositivo. Fabricantes de microcontroladores possuem soluções próprias para uma atualização segura e confiável, porém cada solução possui particulares para uso. Este trabalho apresenta uma solução genérica para atualização segura e confiável de firmware de microcontroladores. Foi realizada uma implementação referência com o microcontrolador STM32L562QE de forma a validar a solução proposta e para demonstrar que é possível obter atualização segura e confiável sem depender de soluções proprietárias dos fabricantes de microcontroladores.

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Sousa, Cássio Moura De, Francisca Beatriz De Aguiar e Kátia Helena Marinho De Andrade. "GESTÃO DE ESTOQUE EM FARMÁCIA HOSPITALAR: UMA REVISÃO BIBLIOGRÁFICA". In III Congresso Brasileiro de Ciências Farmacêuticas On-line. Revista Multidisciplinar em Saúde, 2022. http://dx.doi.org/10.51161/conbracif/71.

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Introdução: As farmácias hospitalares detêm de suprimentos, materiais, insumos e produtos para a saúde e possuem a atribuição de garantir o uso seguro e racional do medicamento. A gestão de estoque é uma prática crucial relacionados aos medicamentos nas farmácias hospitalares e possui a atribuição de garantir o uso racional do medicamento nas instituições hospitalares. Objetivos: Tem-se como objetivos geral descrever a importância da atuação do farmacêutico na gestão de estoque na farmácia hospitalar e como objetivo especifico abordar as estratégias utilizadas na gestão do estoque nas farmácias hospitalares. Material e métodos: Têm-se como aspectos metodológicos estudo de natureza básica, objetivos exploratórios de abordagem qualitativa e procedimento de revisão da literatura. Artigos completos e publicados entre os anos de 2011 à 2021 fazem parte dos critérios de inclusão com o seguinte descritor para a seleção dos estudos: “o farmacêutico na gestão de estoque hospitalar”. Resultados: O farmacêutico exerce atividades importantes no setor administrativo e gerencial permite economia nos espaços de armazenamentos de produtos, alavanca a produtividade da equipe multiprofissional, estabelece a racionalidade no uso de medicamentos, determina redução de recursos financeiros com medicamentos e insumos, otimiza tempo nas tarefas administrativas e é fonte de informações de legislação e sanitária. Entre as estratégias utilizadas na gestão de estoque destacam-se a padronização, a curva ABC e codificação de materiais devido ao grande número de insumos e medicamentos utilizados nestas unidades. Conclusão: Concluiu-se que o farmacêutico se destaca por possuir habilidade que possam aumentar a produtividade nas atividades desenvolvidas na farmácia hospitalar e as estratégias que envolvem a padronização dos serviços foram abordadas nos trabalhos pesquisados.

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Aboutorab, Hamed, Morteza Saberi, Omar K. Hussain e Farookh Khadeer Hussain. "POSSUM: PrOactive diSruption riSk identification for sUpply chain Management". In 2023 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops). IEEE, 2023. http://dx.doi.org/10.1109/percomworkshops56833.2023.10150317.

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"PREDICTING CARDIOVASCULAR RISKS - Using POSSUM, PPOSSUM and Neural Net Techniques". In 8th International Conference on Enterprise Information Systems. SciTePress - Science and and Technology Publications, 2006. http://dx.doi.org/10.5220/0002494202300234.

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Zachos, Louis, e Alexander Ziegler. "DID PROTOSCUTELLID SAND DOLLARS POSSESS GREGORY'S DIVERTICULUM?" In Southeastern Section-70th Annual Meeting-2021. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021se-362251.

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Rapporti di organizzazioni sul tema "Possums"

Hirshleifer, David, Yifan Li, Ben Lourie e Thomas Ruchti. Do Trade Creditors Possess Private Information? Stock Returns Evidence. Cambridge, MA: National Bureau of Economic Research, febbraio 2019. http://dx.doi.org/10.3386/w25553.

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Soares, Weber. O Impacto das Remessas no Desenvolvimento Econômico Local. Inter-American Development Bank, maggio 2004. http://dx.doi.org/10.18235/0007866.

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O desafio é alcançar o mercado externo, dando a oportunidade para que brasileiros não residentes, possam ampliar suas possibilidades de investimentos, com retorno garantido. O Tesouro Direto representa uma alternativa lucrativa, segura e garantida para aqueles valores que são remetidos do exterior com objetivo de poupança. Com os brasileiros tendo acesso a mais bancos nacionais no exterior fica mais fácil oferecer os títulos públicos como alternativa de investimento. ¿ O Tesouro Direto possui uma gama de alternativas de investimento para os remetentes de recursos, compatível com o perfil de poupança.

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Ribeiro, Fernando, e Ricardo Markwald. Comércio e integração econômica entre Brasil e Peru. Inter-American Development Bank, novembre 2013. http://dx.doi.org/10.18235/0008501.

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Este breve estudo analisa a situação atual das relações econômicas entre Brasil e Peru, identificando suas características e seu potencial de expansão, bem como as barreiras que restringem seu crescimento. O objetivo é apresentar subsídios que norteiem ações e iniciativas bilaterais para remover os obstáculos, de forma que os países possam tirar o máximo proveito de suas vantagens competitivas e possam dinamizar suas potencialidades e complementaridades.

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Yitani, José, Huáscar Eguino, Maria do Carmo Bezerra e Lorena Rodríguez Bu. Observatório PROCIDADES Fase II: Análise dos aspectos de gestão de projetos. Inter-American Development Bank, settembre 2012. http://dx.doi.org/10.18235/0010367.

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O Observatório Metodológico PROCIDADES foi desenvolvido sob a responsabilidade do Setor de Conhecimento e Aprendizagem (KNL) e da Divisão de Gestão Fiscal e Municipal (FMM) da Representação no Brasil (CBR), do BID. Possuiu como finalidade promover a reflexão sobre os métodos utilizados para execução de projetos; e fortalecer a capacidade da organização em aprender de sua prática para registrar lições aprendidas e boas práticas para divulgação entre os Municípios executores e o Banco. Iniciado em agosto de 2011, o Observatório PROCIDADES fase II, possuiu como universo de análise 8 projetos em execução, quando foram abordados resultados já alcançados em 3 aspectos: (i) gestão dos projetos; (ii) identificação dos estudos de caso temáticos; e, (iii) mecanismos de difusão de resultados.

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Steiner Jr, Lawrence M. A Study of the Individual Leadership Skills and Traits that Armor Battalion Commanders Must Possess in Order to be Successful in Combat and in Non-Combat Situations. Fort Belvoir, VA: Defense Technical Information Center, maggio 1987. http://dx.doi.org/10.21236/ada592953.

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Barros, Caio. Documento de Trabalho- Ensaios sobre Saúde Suplementar. Departamento de Estudos Econômicos - Cade, ottobre 2021. http://dx.doi.org/10.52896/dee.dt4.021.

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Nesta coletânea, são apresentados três estudos sobre o mercado de saúde suplementar, realizados de 2020 a 2021, que fomenta o debate concorrencial e contribui para o aprimoramento das análises empreendidas pelo Cade. Espera-se que diferentes atores possam utilizar esse documento como apoio para novos trabalhos, bem como para suporte em casos concretos.

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Khan, Saif M., Alexander Mann e Dahlia Peterson. The Semiconductor Supply Chain: Assessing National Competitiveness. Center for Security and Emerging Technology, gennaio 2021. http://dx.doi.org/10.51593/20190016.

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Semiconductors are a key component in fueling scientific progress, promoting economic advancement, and ensuring national security. This issue brief summarizes each component of the semiconductor supply chain and where the United States and its allies possess the greatest leverage. A related policy brief, “Securing Semiconductor Supply Chains,” recommends policy actions to ensure the United States maintains this leverage and uses it to promote the beneficial use of emerging technologies, such as artificial intelligence.

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Khan, Saif M. Securing Semiconductor Supply Chains. Center for Security and Emerging Technology, gennaio 2021. http://dx.doi.org/10.51593/20190017.

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The countries with the greatest capacity to develop, produce and acquire state-of-the-art semiconductor chips hold key advantages in the development of emerging technologies. At present, the United States and its allies possess significant leverage over core segments of the supply chain used to produce these chips. This policy brief outlines actions the United States and its allies can take to secure that advantage in the long term and use it to promote the beneficial use of emerging technologies, such as artificial intelligence.

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MacDonald, James D., Aharon Abeliovich, Manuel C. Lagunas-Solar, David Faiman e John Kabshima. Treatment of Irrigation Effluent Water to Reduce Nitrogenous Contaminants and Plant Pathogens. United States Department of Agriculture, luglio 1993. http://dx.doi.org/10.32747/1993.7568092.bard.

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The contamination of surface and subterranean drinking water supplies with nitrogen-laden agricultural wastewater is a problem of increasing concern in the U.S. and Israel. Through this research, we found that bacteria could utilize common organic wastes (e.g. paper, straw, cotton) as carbon sources under anaerobic conditions, and reduce nitrate concentrations in wastewater to safe levels. Two species of bacteria, Cellulomonas uda and a Comamonas sp., were required for dentitrification. Celulomonas uda degraded cellulose and reduced nitrate to nitrite. In addition, it excreted soluble organic carbon needed as a food source by the Comamonas sp. for completion of denitrification. We also found that recirculated irrigation water contains substantial amounts of fungal inoculum, and that irrigating healthy plants with such water leads to significant levels of root infection. Water can be disinfected with UV, but our experiments showed that Hg-vapor lamps do not possess sufficient energy to kill spores in wastewater containing dissolved organics. Excimer lasers and Xenon flashlamps do possess the needed power levels, but only the laser had a high enough repetition rate to reliably treat large volumes of water. Ozone was highly efficacious, but it's use as a water treatment is probably best suited to moderate or low volume irrigation systems. This research provides critical data needed for the design of effective water denitrification and/or pathogen disinfection systems for different growing operations.

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bin Ahsan, Wahid, Asad Uz Zaman, Sultana Nasrin Anika, Tanjina Akter, Dip Chandra Dey e Shishir Sarker. Advancing Human-Centered Design Practices Among Designers in Bangladesh: Updated Insights 2024. Userhub, giugno 2024. http://dx.doi.org/10.58947/jgvd-qwmr.

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This qualitative case study explores the work processes and challenges faced by designers in Bangladesh regarding the adoption of human-centered design (HCD) methodologies. Interviews with 50 participants from various industries revealed that while Bangladeshi designers possess strong visual design skills, they often lack an understanding of HCD methodologies and face challenges such as time management, payment issues, and limited access to resources. The study underscores the need for a collaborative environment among clients, designers, and management, as well as enhanced education and resources to support HCD adoption. These insights highlight critical areas for improving design education, communication, and collaboration in Bangladesh.

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