Author:
Lloyd-Jones Luke R.,Bravington Mark V.,Armstrong Kyle N.,Lawrence Emma,Feutry Pierre,Todd Christopher M.,Dorrestein Annabel,Welbergen Justin A.,Martin John M.,Rose Karrie,Hall Jane,Phalen David N.,Peters Isabel,Baylis Shane M.,Macgregor Nicholas A.,Westcott David A.
Abstract
AbstractReliable 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.
Publisher
Springer Science and Business Media LLC
Reference59 articles.
1. Krebs, C. J. Ecology; the experimental analysis of distribution and abundance (NY (USA) Harper and Row, 1985).
2. MacKenzie, D. I. et al. Occupancy estimation and modeling: inferring patterns and dynamics of species occurrence. (Elsevier, 2017).
3. Anderson, R., Gordon, D. M., CraWley, M. & Hassell, M. P. Variability in the abundance of animal and plant species. Nature 296, 245–248 (1982).
4. Lande, R. Genetics and demography in biological conservation. Science 241, 1455–1460 (1988).
5. Begon, M. & Townsend, C. R. Ecology: from individuals to ecosystems. (John Wiley & Sons, 2020).
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