Effects of testosterone on breeding density, breeding success and survival of red grouse
Effects of testosterone on breeding density, breeding success and survival of red grouse
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DOI：
10.1098/rspb.1994.0159
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发表时间：
1994-11
期刊：
影响因子：
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通讯作者：
R. Moss;R. Parr;X. Lambin
中科院分区：
文献类型：
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作者：
R. Moss;R. Parr;X. Lambin
领地不宽容会阻止下属占有领地和繁殖，从而限制鸟类数量。我们报告了第一个在领地动物自然种群中进行的对照和重复实验，该实验表明，通过植入睾酮诱导增加攻击性，可以降低种群密度。植入领地的雄鸡以牺牲未植入的邻居为代价扩大了领地，其中一些雄鸡离开了研究区域。未植入的公鸡离开研究区域的可能性随着其植入的邻居数量的增加而增加。与对照雄鸡相比，植入的雄鸡具有更好的繁殖成功率，但随后的存活率较差。
Territorial intolerance can limit bird numbers by preventing subordinates from holding territories and breeding. We report the first controlled and replicated experiment in a natural population of territorial animals which shows that population density can be decreased by implants of testosterone inducing increased aggressiveness. Implanted territorial cocks expanded their territories at the expense of unimplanted neighbours, some of which left the study area. The probability of an unimplanted cock leaving the study area increased with his number of implanted neighbours. Implanted cocks had better breeding success but poorer subsequent survival than control cocks.