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Добірка наукової літератури з теми "Dasyurus Breeding"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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Статті в журналах з теми "Dasyurus Breeding"

Woolley, PA. "Observations On The Reproductive Biology Of Myoictis Albopunctatus And Dasyurus Spartacus, Dasyurid Wallacei, Neophascogale Lorentzi, Dasyurus Marsupials Endemic To New Guinea." Australian Mammalogy 23, no. 1 (2001): 63. http://dx.doi.org/10.1071/am01063.

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FIELD and laboratory observations on the reproductive biology of seven species of dasyurid marsupials endemic to New Guinea (viz. ?Antechinus? habbema, ?Antechinus? melanurus, ?Antechinus? naso, Murexia longicaudata, Murexia rothschildi, Myoictis melas and Phascolosorex dorsalis) have been recorded by Woolley (in press). Here, less detailed observations on another four, previously unstudied, species (Myoictis wallacei, Neophascogale lorentzi, Dasyurus albopunctatus and Dasyurus spartacus) are presented to provide information on some aspects of reproduction in each species. Only a small number of individuals of each species were trapped, or collected by other means, and maintained in captivity (Table 1). The methods used for trapping and maintenance can be found in Woolley (1993), and for the observations made on the animals, Woolley (in press). Captive breeding could not be attempted because only one sex of each species was maintained. The limited reproductive data obtained from individuals at the time of capture, and from captive animals, is summarised for males in Table 2 and Fig. 1, and for females in Table 3.

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WAY, KEVIN CON. "Captive management and breeding of the Tiger quoll: Dasyurus maculatus." International Zoo Yearbook 27, no. 1 (January 1987): 108–19. http://dx.doi.org/10.1111/j.1748-1090.1987.tb01520.x.

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BRYANT, SALLY. "Maintenance and captive breeding of the Eastern quoll Dasyurus viverrinus." International Zoo Yearbook 27, no. 1 (January 1987): 119–24. http://dx.doi.org/10.1111/j.1748-1090.1987.tb01521.x.

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WAY, KEVIN CON. "Captive management and breeding of the Tiger quoll: Dasyurus maculatus." International Zoo Yearbook 27, no. 1 (December 18, 2007): 108–19. http://dx.doi.org/10.1111/j.1748-1090.1988.tb03203.x.

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BRYANT, SALLY. "Maintenance and captive breeding of the Eastern quoll Dasyurus viverrinus." International Zoo Yearbook 27, no. 1 (December 18, 2007): 119–24. http://dx.doi.org/10.1111/j.1748-1090.1988.tb03204.x.

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Belcher, C. A. "Demographics of tiger quoll (Dasyurus maculatus maculatus) populations in south-eastern Australia." Australian Journal of Zoology 51, no. 6 (2003): 611. http://dx.doi.org/10.1071/zo02051.

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The tiger quoll is a large marsupial carnivore that occurs in forested habitat in south-eastern Australia. Three tiger quoll populations were trapped for up to six years and data on population parameters, including size, structure, sex ratio, adult : subadult ratio, weight, breeding characteristics, age and longevity were recorded for each population. Sex ratios (♂ : ♀) varied from 5 : 1 to 0 : 1. Population size and age structure reflected previous mortality events and social organisation traits, with all populations showing signs of instability due to disturbance events. Males did not reach full adult weight until three years of age and females until two years. Mean adult male weight was 2.81 kg ± 0.50 (s.d.) (range 2.0–4.2 kg) and mean adult female weight was 1.73 kg ± 0.22 (s.d.) (range 1.2–2.1 kg). Most females did not breed before two years of age and were recorded breeding up to four years of age. A proportion of females did not appear to breed in consecutive years. Matings were estimated to have occurred between late June and early August and births between mid-July and late August. Pouch litter size varied from 4 to 6 with a mean of 5.38 ± 0.65 (s.d.). The adult to juvenile ratio suggests that the mean number of young weaned per female is probably as low as one or two. Monitoring of four females found that the average number of young weaned was three with a range of 2–4. The maximum age recorded was five years. Population declines were found to correlate with 1080 poison baiting programmes, but not with selective logging.

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Old, Julie M., and Hayley J. Stannard. "Corrigendum to: Conservation of quolls (Dasyurus spp.) in captivity – a review." Australian Mammalogy 43, no. 3 (2021): 378. http://dx.doi.org/10.1071/am20033_co.

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Quolls are carnivorous marsupials in the family Dasyuridae with characteristic white spots. They are distributed throughout Australia and New Guinea, but uncommonly seen due to their mostly nocturnal solitary nature, and large home ranges. All Australian quolls are listed as ‘near threatened' or ‘endangered' at state, national and international levels, largely due to human-induced threats. Threats include introduced predators, habitat loss through clearing and modifications including changed fire regimes, disease, human persecution, vehicle collisions and accidental or targeted poisoning by humans and cane toads (Rhinella marina). Conservation efforts that have focussed on reducing introduced predators, and minimising the impact of cane toads, have aided some translocations, hence species recovery in some local areas of Australia has occurred. Where species conservation has required captive breeding for translocation, successful captive management has been crucial. We summarise research conducted in captivity on aspects of birth and development, health and disease, and blood and nutrition parameters of quolls, and suggest future directions for research. Further research on captive and wild quoll populations will benefit future translocations, reintroductions and conservation through increased knowledge, improved maintenance and husbandry of captive colonies, and monitoring of wild populations.

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Spencer, Peter B. S., Simon Sandover, Kimberley Nihill, Celeste H. Wale, Richard A. How, and Lincoln H. Schmitt. "Living in isolation: ecological, demographic and genetic patterns in northern Australia’s top marsupial predator on Koolan Island." Australian Mammalogy 39, no. 1 (2017): 17. http://dx.doi.org/10.1071/am16004.

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Koolan Island supports an abundant population of the threatened northern quoll (Dasyurus hallucatus). We used a mark–release–recapture program that produced 2089 captures from 2009 to 2012 to examine demographic and genetic parameters in this insular population and compare to other localities. Every captured female was either lactating or carrying up to eight young over the breeding season, July–September. Unlike several other populations, males on Koolan Island can survive long after breeding, but never into a second breeding season. Females can survive and reproduce for two successive annual breeding seasons and occasionally survive to a third. There is marked sexual dimorphism but it is less pronounced, and both sexes are smaller than their mainland counterparts. Quolls were recorded moving over 4 km and apparent abundance was far higher on Koolan Island than the mainland. Genetic analyses of nuclear and mitochondrial markers demonstrate a distinctive signature. Koolan island has only 34% of the allelic richness of the entire species, and only 38% of the alleles in Kimberley mainland and near-shore island populations. There is no evidence of recent or long-term population decline. Kimberley island faunas have distinctive demographic and genetic profiles that should be appraised before considering translocations for conservation purposes.

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Stead-Richardson, E. J., S. D. Bradshaw, F. J. Bradshaw, and G. Gaikhorst. "Monitoring the oestrous cycle of the chuditch (Dasyurus geoffroii) (Marsupialia : Dasyuridae): non-invasive analysis of faecal oestradiol-17b." Australian Journal of Zoology 49, no. 2 (2001): 183. http://dx.doi.org/10.1071/zo00024.

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Faecal oestradiol-17β levels were monitored for three months during the breeding period in six female chuditch (Dasyurus geoffroii) held in a captive colony. Four of the females mated and gave birth to young. One female mated once but did not conceive and the other female did not mate. Peaks in oestradiol concentration, up to 9 ng g–1 of dried faecal mass, were observed during the period when urogenital swabs were dominated by cornified epithelial cells. Multiple peaks of oestradiol were also observed in the female that did not mate, suggesting that the chuditch may be a reflex ovulator. Monitoring of faecal oestradiol levels did not enable oestrus to be determined with precision, but showed potential for elucidating details of the reproductive biology of this and other marsupial species.

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Ruibal, Monica, Rod Peakall, and Andrew Claridge. "Socio-seasonal changes in scent-marking habits in the carnivorous marsupial Dasyurus maculatus at communal latrines." Australian Journal of Zoology 58, no. 5 (2010): 317. http://dx.doi.org/10.1071/zo10040.

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Scat DNA analyses and monthly monitoring were used to elucidate patterns of latrine use in a free-ranging population of a rare Australian marsupial carnivore, the spotted-tailed quoll (Dasyurus maculatus) Kerr. In all, 132 latrines were identified at large complex outcrops and on bedrock in drainage lines, creeks and rivers at a single woodland site in south-eastern mainland Australia. Annual cyclic variation in scat deposition was found over the two years that latrines were monitored. Peaks in scat deposition on latrines coincided with seasonal social behaviours and differed between sites on outcrops and sites along drainage lines. A marked increase in scat deposition on latrines in drainage lines was recorded during the mating season and at outcrop latrines when females were nursing young. Genetic analyses of scats collected over one breeding season revealed that multiple individuals of both sexes defaecated at latrines. The communal use of latrines during the mating season along with the seasonal patterns of scat deposition demonstrates that latrines are important scent-marking sites that facilitate social communication among individuals of this solitary-living species. The collective evidence indicates that latrines play a major role in aiding reproduction and interindividual spacing.

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Більше джерел

Дисертації з теми "Dasyurus Breeding"

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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