Territorial male color predicts agonistic behavior of conspecifics in a color polymorphic species
Territorial male color predicts agonistic behavior of conspecifics in a color polymorphic species
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领地雄性颜色预测颜色多态物种中同种的竞争行为
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
R. Fernald
中科院分区：
文献类型：
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作者：
W. Korzan;R. Fernald
在非洲坦噶尼喀湖（Lake Tanganyika）的海岸池塘中，雄性丽鱼（Astatotilapia burtoni）生活在一个类似Lek的社会系统中，属于两种不同的社会表型之一：领地性（T）雄性约占种群的10- 30%，而非领地性（NT）雄性则占其余的10 - 30%。T男性是鲜艳的蓝色或黄色与彩色的身体模式和更大，繁殖能力，并捍卫领土含有食物资源用于吸引女性产卵与他们。NT男性迷彩色，较小，退化的性腺，和浅滩与女性。重要的是，男性在这些社会状态之间的转换取决于他们在攻击性遭遇中的成功。目前还不知道黄色和蓝色T变体之间是否有区别。在这里，我们问T男性是否优先捍卫自己的领土对男性的相同或相反的颜色。在社会群体中观察到的T男性主要与相邻的T男性相反的颜色，和黄色变体发起显着更具侵略性的相互作用的激动性的相互作用。当激动的偏好进行了实验测试，T男性有显着更多的激动的相互作用对男性的相反颜色，黄色的T男性成为领土在大多数的这些相互作用。两者合计，这些结果表明，男性着色是一个重要的社会信号，在这个物种中相邻的T男性和支持的假设，T男性差异直接竞争行为取决于相邻男性的颜色。版权所有2007年，牛津大学出版社。
Male cichlid fish, Astatotilapia burtoni, live in a lek-like social system in shore pools of Lake Tanganyika, Africa, as one of two distinct social phenotypes: territorial (T) males that comprise approximately 10--30% of the population and nonterritorial (NT) males that make up the rest. T males are brightly colored either blue or yellow with chromatic body patterns and are larger, reproductively capable, and defend territories containing a food resource used to entice females to spawn with them. NT males are camouflage colored, smaller, have regressed gonads, and shoal with females. Importantly, males shift between these social states depending on their success in aggressive encounters. It is not known whether there is a difference between yellow and blue T morphs. Here we asked whether T males preferentially defend their territory against a male of the same or opposite color. T males observed in social groups had agonistic interactions predominantly with neighboring T males of the opposite color, and yellow morphs initiated significantly more aggressive interactions. When agonistic preference was tested experimentally, T males had significantly more agonistic interactions toward males of the opposite color, and yellow T males became territorial in the majority of those interactions. Taken together, these results suggest that male coloration is an important social signal among neighboring T males in this species and support the hypothesis that T males differentially direct agonistic behavior depending on the color of neighboring males. Copyright 2007, Oxford University Press.