Naslov
Monitoring of effective population size in a hunted population of brown bears (Ursus arctos) shows effects of different management approaches in neighboring countries.

Autori
Skrbinšek, Tomaž ; Jelenčič, Maja ; Jerina, Klemen ; Huber, Djuro ; Reljić, Slaven, Trontelj, Peter

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Book of Abstracts of the 23rd International Conference on Bear Research & Management (IBA). / - Solun, 2014, 161-161

Skup
23rd International Conference on Bear Research & Management.

Mjesto i datum
Solun, Grčka, 05.10.2014. - 11.10.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Brown bear, monitoring, effective population size, hunting, management

Sažetak
Effective population size (Ne) is arguably one of the most elegant concepts in biology, conveniently summarizing both evolutionary potential of a population and its sensitivity to genetic stochasticity in a single parameter. While this parameter used to be very difficult to estimate in a natural population, new methodological developments over the recent years made it possible not only to estimate, but also to monitor effective population size as it changes through time. We collected tissue samples of brown bear mortality in Slovenia and Croatia from late 1990s until 2013 (n=1, 527 individuals), genotyped them using 20 polymorphic microsatellite loci, and determined the age of each animal using tooth cementum rings. We applied several methods for estimating Ne and estimated this parameter for each year with a large enough sample size, from 2000 until 2013. Slovenia and Croatia used to be a part of the same country, share the same brown bear population and used to share similar management objectives. However, we observed that local Ne estimates started to diverge as the bear management in both countries started drifting apart. The differences can be explained by differences in brown bear management objectives and its effects on age/sex structure of mortality, demonstrating both the utility of Ne estimation for monitoring wild bear populations, as well as the effect that local management decisions can have on a bear population at the most fundamental, molecular level.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Veterinarska medicina

POVEZANOST RADA