Academic Journal
Breeding migrations by bighorn sheep males are driven by mating opportunities
| العنوان: | Breeding migrations by bighorn sheep males are driven by mating opportunities |
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| المؤلفون: | Lassis, Roxane, Festa‐Bianchet, Marco, Pelletier, Fanie |
| المساهمون: | Natural Sciences and Engineering Research Council of Canada |
| المصدر: | Ecology and Evolution ; volume 12, issue 3 ; ISSN 2045-7758 2045-7758 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2022 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | In some species where male mating success largely depends on intrasexual competition, males can adopt migratory or resident strategies to seek breeding opportunities. The resulting mixture of resident and migrant tactics within a population can have important ecological, genetic, and evolutionary consequences for metapopulations. Bighorn sheep Ovis canadensis males establish a linear dominance hierarchy that influences their mating tactics. Some males perform breeding migrations during the pre‐rut and rut to seek mating opportunities, but little is known about these seasonal movements. We analyzed presence/absence data for 62 marked bighorn males during six mating seasons (20–32 males/year) in the Sheep River Provincial Park, Alberta, Canada, where hunting was not allowed. On average, about half of males left their natal population to rut elsewhere. The proportion of males leaving (yearly range 15%–69%) increased as the number of resident mature males increased and the populational sex ratio decreased, with fewer females during the pre‐rut. Among those leaving the park, 24% did so in October, while the trophy sheep hunting season was open. Detailed monitoring of breeding migrations in protected populations could inform management strategies to limit evolutionary impacts of hunting, which can alter size‐dependent mortality and create artificial pressures driving changes on heritable traits. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/ece3.8692 |
| الاتاحة: | http://dx.doi.org/10.1002/ece3.8692 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8692 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8692 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.DD6CDC44 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/ece3.8692 |
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