Close-kin mark-recapture informs critically endangered terrestrial mammal status.

Autor: Lloyd-Jones LR; Commonwealth Scientific and Industrial Research Organisation, Data61, Brisbane, QLD, 4072, Australia. luke.lloyd-jones@csiro.au., Bravington MV; Commonwealth Scientific and Industrial Research Organisation, Data61, Hobart, TAS, 7000, Australia., Armstrong KN; Environment Institute, University of Adelaide, North Terrace, Adelaide, South Australia, 5005, Australia., Lawrence E; Commonwealth Scientific and Industrial Research Organisation, Data61, Brisbane, QLD, 4072, Australia., Feutry P; Commonwealth Scientific and Industrial Research Organisation, Oceans and Atmosphere, Hobart, TAS, 7000, Australia., Todd CM; The Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia., Dorrestein A; The Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia., Welbergen JA; The Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia., Martin JM; The Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia.; Royal Botanic Gardens and Domain Trust, Sydney, NSW, 2000, Australia.; Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradleys Head Road, Mosman, NSW, 2088, Australia., Rose K; Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradleys Head Road, Mosman, NSW, 2088, Australia., Hall J; Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradleys Head Road, Mosman, NSW, 2088, Australia., Phalen DN; Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, NSW, 2006, Australia., Peters I; School of Mathematics and Physics, University of Queensland, Brisbane, QLD, 4072, Australia., Baylis SM; Commonwealth Scientific and Industrial Research Organisation, Oceans and Atmosphere, Hobart, TAS, 7000, Australia., Macgregor NA; Parks Australia, Canberra, ACT, 2601, Australia.; Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, Kent, UK., Westcott DA; Land and Water, Commonwealth Scientific and Industrial Research Organisation, Atherton, QLD, 4883, Australia.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Aug 02; Vol. 13 (1), pp. 12512. Date of Electronic Publication: 2023 Aug 02.
DOI: 10.1038/s41598-023-38639-z
Abstrakt: Reliable information on population size is fundamental to the management of threatened species. For wild species, mark-recapture methods are a cornerstone of abundance estimation. Here, we show the first application of the close-kin mark-recapture (CKMR) method to a terrestrial species of high conservation value; the Christmas Island flying-fox (CIFF). The CIFF is the island's last remaining native terrestrial mammal and was recently listed as critically endangered. CKMR is a powerful tool for estimating the demographic parameters central to CIFF management and circumvents the complications arising from the species' cryptic nature, mobility, and difficult-to-survey habitat. To this end, we used genetic data from 450 CIFFs captured between 2015 and 2019 to detect kin pairs. We implemented a novel CKMR model that estimates sex-specific abundance, trend, and mortality and accommodates observations from the kin-pair distribution of male reproductive skew and mate persistence. CKMR estimated CIFF total adult female abundance to be approximately 2050 individuals (95% CI (950, 4300)). We showed that on average only 23% of the adult male population contributed to annual reproduction and strong evidence for between-year mate fidelity, an observation not previously quantified for a Pteropus species in the wild. Critically, our population estimates provide the most robust understanding of the status of this critically endangered population, informing immediate and future conservation initiatives.
(© 2023. The Author(s).)
Databáze: MEDLINE
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