Territories of male and female terrestrial salamanders: costs, benefits, and intersexual spatial associations
Territories of male and female terrestrial salamanders: costs, benefits, and intersexual spatial associations
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雄性和雌性陆生蝾螈的领地：成本、收益和两性空间关联
DOI：
10.1007/bf00317613
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发表时间：
1991
期刊：
影响因子：
2.7
通讯作者：
A. Mathis
中科院分区：
文献类型：
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作者：
A. Mathis
摘要我使用标记再捕获研究估计了107只红背火蜥蜴(Plethodon Cinereus)在天然森林栖息地的家园面积。这一物种的雄性和雌性都保卫着觅食的领地，但我推测，在这个相对高密度的种群中(大约每平方米2.8只)，有些个体是非领域性的漂浮者。尽管领地火蜥蜴表现出更多的尾巴自切，但它们的相对尾巴长度明显更长。这种差异表明，领土个人从领土所有权中受益。从观察到家的区域大小与身体大小成反比，我推断较大的动物获得了更高质量的觅食区域。与随机分布相比，成虫的居住区在两性间的隔离和聚集程度明显更高。此外，家庭区域的两性间重叠显著大于两性间的家庭区域重叠。因此，雄性和雌性红背蜥蜴对觅食区域的领土防御也可能在交配行为中发挥作用。
SummaryI used a mark-recapture study to estimate home areas for 107 red-backed salamanders (Plethodon cinereus) in a natural forest habitat. Both males and females of this species defend feeding territories, but I presume that some individuals in this relatively highdensity population (approximately 2.8 salamanders per m2) are nonterritorial floaters. Although territorial salamanders exhibited greater numbers of tail autotomies, they had significantly longer relative tail lengths. This difference suggests that territorial individuals gain benefits from territorial ownership. From the observation that home area size was inversely correlated with body size, I infer that larger animals gained higher quality foraging areas. Home areas of adults were significantly more segregated intrasexually and more aggregated intersexually than would be expected from a random distribution. Furthermore, intersexual overlap of home areas was significantly greater than intrasexual home area overlap. Territorial defense of feeding areas by male and female red-backed salamanders therefore also may play a role in mating behavior.