Naslov
European brown bears live trapping: efficiency for research purposes

Autori
Pereira, Joana ; Rosalino, Miguel ; Reljić, Slaven ; Huber, Djuro

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

Izvornik
Book of Abstracts of the 26th International Conference on Bear Research & Management (IBA) / Majić Skrbinšek, Aleksandra - Ljubljana : Univerza v Ljubljani, 2018, 146-146

Skup
26th International Conference on Bear Research and Management (IBA 2018)

Mjesto i datum
Ljubljana, Slovenija, 16.09.2018. - 21.09.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ursus arctos, trapping efficiency

Sažetak
Many wildlife research studies and management strategies targeting free-ranging animals require the need for temporarily hands-on opportunities to collect biological samples, assess physiological conditions or install monitoring devices. The basic requirements when trapping wildlife are that the animal does not get injured or excessively stressed, or accidentally killed, and that it continues the normal ranging activities after being handled by researchers. Furthermore, trapping campaigns are logistically and financially demanding, and therefore, there is an increasing need to optimize captures success. The objective of this study was to use the 36 years of trapping experience and dataset from free-living European brown bears captures in Croatia to test four hypotheses related to bear’s capturing success. Thus, we hypothesised that capturing success of Aldrich foot snare trap will be determined by factors associated with: (H1) trapping design, associated with the trapping area, season and set ; (H2) bait design, linked to the bait type, frequency of re-baiting and occurrence of prebaiting ; (H3) trapping events, dependent exclusively on the way animals behave at the trapping-sites ; (H4) or a combination of any of those factors. 416 Aldrich type traps were set at 164 trapping-sites, during 2, 994 days, comprising a total of 7, 298 trap-nights and 63 captured bears. These trapping-sites were monitored in 45 trapping-sessions in both Gorski Kotar and Lika regions. The results highlighted that longer trapping-sessions and the use of bait at trapping-sites increased capturing-efficiency. Also, bears’ visit to the sites enhanced the number of captures ; however in cases where bears managed to eat the bait, the capturing success was lower. Lastly, the importance of some capturing criteria was different for the two study regions, evidencing the influence of trapping areas’ characteristics in the capturing efficiency

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Veterinarska medicina

POVEZANOST RADA