Non-invasive genetic sampling of brown bears and Asiatic black bears in the Russian Far East: A pilot study

Autor:	Michael L. Gibeau, Erin Latham, Jeffrey B. Stetz, Ivan V. Seryodkin, Dale G. Miquelle
Rok vydání:	2012
Předmět:	Ecology Sampling (statistics) Management Monitoring Policy and Law Biology Ursus thibetanus biology.organism_classification Abundance (ecology) Genetic marker Sympatric speciation Microsatellite Animal Science and Zoology Ursus Far East Nature and Landscape Conservation
Zdroj:	Ursus. 23:145-158
ISSN:	1938-5439 1537-6176
DOI:	10.2192/ursus-d-11-00022r2.1
Popis:	Non-invasive genetic sampling (NGS) methods have been instrumental in providing robust population abundance and density estimates of bears. We conducted a small pilot study to (1) evaluate 2 NGS methods of hair traps and bear rubs in the Russian Far East (RFE) on sympatric populations of Asiatic black bears (Ursus thibetanus) and brown bears (Ursus arctos), and (2) to identify potential DNA marker sets for future study. Genetic analysis required 6 microsatellite markers to definitively identify individuals plus a gender marker, and closed population models estimated 142 Asiatic black bears and 18 brown bears. Spatially-explicit mark–recapture (SECR) density estimates for brown bears were 3 bears/100 km2. Inflated Asiatic black bear estimates resulted from a lack of recaptures, although using combined detection data from the 2 NGS methods was found to improve precision for abundance estimates. Capture probabilities were higher for brown bears than for Asiatic black bears, but overall recapture pro...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::097c1f810e8cbf0a403ac6ecd808efd0 https://doi.org/10.2192/ursus-d-11-00022r2.1 Zobrazit plný text záznamu Plný text ve formátu PDF