Skin carotenoid concentration correlates with male hunting skill and territory quality in the kestrel Falco tinnunculus
Skin carotenoid concentration correlates with male hunting skill and territory quality in the kestrel Falco tinnunculus
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DOI：
10.1111/j.0908-8857.2006.03515.x
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发表时间：
2006-03-01
影响因子：
1.7
通讯作者：
Tagliavini, J
中科院分区：
文献类型：
--
作者：
Casagrande, S;Csermely, D;Tagliavini, J
在性选择的背景下，基于类胡萝卜素的信号是指示性状的候选者：它们必须在动物的饮食中被吸收，它们可以表明承载者积累有限资源的能力，并且它们有助于维持健康状态。我们研究了红隼（Falco tinunculus）的跗部黄橙色与性别、饮食和雄性生殖行为的不同方面的关系。男性眼镜的颜色（估计为色相）比女性更强烈。在雄性中，tarsi色调与无脊椎动物的摄入量有关；如果种群的饮食主要以田鼠为基础，这也是正确的。以类胡萝卜素为基础的着色与每单位时间内运送到巢穴的脊椎动物猎物数量呈正相关，并与领土质量呈正相关（根据家园范围大小、栖息地扩展和猎物可用性计算）。这些结果与来自性选择好亲本模型的预测一致，表明在普通红隼中，类胡萝卜素的着色作为雄性质量的重要指标。
In the context of sexual selection carotenoid based signals are candidates for indicator traits: they have to be taken up in the diet by animals, they can indicate the ability of the bearer to accumulate a limited resource, and they help in maintaining the health status. We investigated the yellow-orange colouration of the tarsi of the kestrel Falco tinnunculus in relation to sex, diet and to different aspects of male reproductive behaviour. The colouration of the tarsi (estimated as hue) was more intense in males than in females. Among males, the tarsi hue was associated with the intake of invertebrates; this was true also if the population diet was based mainly on voles. Carotenoid based colouration was positively associated with the number of vertebrate preys delivered to the nest per time unit and with territory quality (calculated on the basis of home-range size, habitat extension and prey availability). These results are consistent with predictions derived from good-parent models of sexual selection, suggesting that in the common kestrel carotenoid based colouration is important as an indicator of male quality.