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Conséquences écologiques et évolutives de la chasse chez l'ours brun (Ursus arctos) scandinave
| Content Provider | Semantic Scholar |
|---|---|
| Author | Leclerc, Martin |
| Copyright Year | 2018 |
| Abstract | 1. The removal of individuals through hunting can destabilize social structure, potentially affecting population dynamics. Although previous studies have shown that hunting can indirectly reduce juvenile survival through increased sexually selected infanticide, very little is known about the spatiotemporal effects of male hunting on juvenile survival. 2. Using detailed individual monitoring of a hunted population of brown bears (Ursus arctos) in Sweden (1991-2011), we assessed the spatiotemporal effect of male removal on cub survival. 3. We modeled cub survival before, during, and after the mating season. We used three proxies to evaluate spatial and temporal variation in male turnover; distance and timing of the closest male killed and number of males that died around a female’s home range center. 4. Male removal decreased cub survival only during the mating season, as expected in seasonal breeders with sexually selected infanticide. Cub survival increased with distance to the closest male killed within the previous 1.5 years and it was lower when the closest male killed was removed 1.5 instead of 0.5 year earlier. We did not detect an effect of the number of males killed. 5. Our results support the hypothesis that social restructuring due to hunting can reduce recruitment and suggest that the distribution of the male deaths might be more important than the overall number of males that die. As the removal of individuals through hunting is |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://savoirs.usherbrooke.ca/bitstream/handle/11143/12378/Leclerc_Martin_PhD_2018.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
