Impacts écologiques et évolutifs de la chasse sur les ongulés nordiques - Ecological and evolutionary impacts of hunting on northern ungulates

Impacts écologiques et évolutifs de la chasse sur les ongulés Nordiques - 狩猎对北部有蹄类动物的生态和进化影响

• 批准号: 378495-2009
• 负责人: FestaBianchet, Marco
• 金额: $ 1.09万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Northern Research Supplement
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=515286
• 关键词: Impacts; cologiques; et; volutifs; de

In northern Canada, sport hunting by non-residents generates substantial revenues for many communities. Most non-resident sport hunters seek 'trophy' animals, typically males in their prime, with large horns or antlers. Although the demographic impacts of this harvest are generally thought to be minimal, increasing concern is being raised over its evolutionary consequences. Because trophy hunting likely removes high-quality males that would normally have high reproductive success, it may be a selective pressure against large horns or antlers. By removing high-quality males before they can reproduce, trophy hunting may also decrease the genetic diversity of hunted populations. My research on Stone's sheep in northern BC and on migratory caribou in northern Québec/Labrador will assess the possible impacts of trophy hunting on the morphology and development of ungulates. My students and I will analyze data on yearly horn growth of Stone's rams harvested over the past 30 years and collect new data to determine the impacts of climate, vegetation productivity and hunter preference on age-specific horn development. We will compare the size of caribou antlers to hunter type (native harvesters VS nonresident trophy hunters), body condition, population density, climate and productivity. Our results will ensure that sport hunting by nonresidents in the North will remain ecologically and evolutionary sustainable while continuing to provide revenues for northern Canadians.

在加拿大北方，非居民的狩猎运动为许多社区带来了可观的收入。 大多数非居民的狩猎者寻找“战利品”动物，通常是年富力强的雄性，有大角或鹿角。 虽然人们普遍认为这种收获对人口的影响很小，但人们越来越担心其演变后果。 由于战利品狩猎可能会消除高质量的男性，通常会有高繁殖成功率，这可能是一个选择性的压力，对大角或鹿角。 通过在高质量的雄性动物能够繁殖之前将其移除，战利品狩猎也可能减少被狩猎种群的遗传多样性。 我的研究石头的羊在北方BC和迁徙驯鹿在北方魁北克/拉布拉多将评估可能的影响战利品狩猎的形态和有蹄类动物的发展。 我和我的学生将分析过去30年来收获的斯通公羊的年度角生长数据，并收集新的数据，以确定气候、植被生产力和猎人偏好对特定年龄角发育的影响。 我们将比较驯鹿鹿角的大小与猎人类型（本地收割者与非居民战利品猎人），身体状况，人口密度，气候和生产力。 我们的研究结果将确保北方非居民的体育狩猎在生态和进化上保持可持续性，同时继续为北方加拿大人提供收入。