The significance of male-male aggression for yearling dispersal in roe deer (Capreolus capreolus)
The significance of male-male aggression for yearling dispersal in roe deer (Capreolus capreolus)
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雄性之间的攻击行为对狍子一岁扩散的意义（Capreolus capreolus）
DOI：
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发表时间：
2004
影响因子：
2.3
通讯作者：
L. Kjell Wahlstr�m
中科院分区：
文献类型：
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作者：
L. Kjell Wahlstr�m
成年雄鹿的侵略作为一个近因驱动一岁的男性扩散的狍，Capreolus Capreolus，的意义进行了研究，在瑞典的扩散季节（4月至6月）在1988年至1991年。在鹿种中，一年生鹿茸的大小和扩散趋势之间存在着良好的正相关关系。我测试了预测，一岁大的鹿角将经历更多的痛苦，从成年巴克斯比那些小鹿角。此外，我研究了鹿茸的大小和性成熟水平之间的关系，通过记录天鹅绒脱落的日期，并在繁殖季节从淘汰的一岁鸽睾丸重量取样。在四月和五月期间，一岁鸽所经历的痛苦程度与鹿角的大小正相关，而在六月则没有发现这种关系。随着季节的推移，对所有一岁鸽的攻击倾向于增加。鹿茸大小与精巢重呈正相关，一岁鹿鹿茸越大，脱绒越早。这些结果表明：首先，成年公鹿的激动作用是一岁公鹿扩散的重要近因，其次，这种激动作用主要针对性最成熟的一岁公鹿。这反过来又表明，配偶竞争是最终的原因，男性男性的agonism，因此男性在这个物种的传播。
The significance of adult buck aggression as a proximate factor driving yearling male dispersal in roe deer, Capreolus Capreolus, was studied in Sweden during the dispersal season (April–June) in 1988–1991. In roe there is a well established positive correlation between yearling antler size and dispersal tendency. I tested the prediction that yearlings with large antlers will experience more agonism from adult bucks than those with smaller antlers. Additionally, I studied the relationship between antler size and level of sexual maturity, by recording date of velvet shedding, and sampling testes weights from culled yearlings during the breeding season. The amount of agonism experienced by yearlings was positively correlated with the size of their antlers during April and May, whereas in June no such relationship was found. Aggression towards all yearlings tended to increase as the season progressed. A positive correlation between antler size and testes weight was evident, and the larger the antlers of yearlings the earlier the velvet shedding occured. These results indicate: firstly, that adult buck agonism is an important proximate factor underlying yearling male dispersal; and secondly, that agonism is mainly directed towards the sexually most mature yearlings. This, in turn, suggests mate competition to be the ultimate cause of male-male agonism, and thus male dispersal in this species.