Kin selection and the ecology of kin biased behaviour

包容性健身理论，也被称为亲属选择理论，提供了一个一般的框架，预测社会行为的研究，亲属的差别待遇，即亲属偏见，可以增加一个演员的包容性健身。然而，生态约束，如亲属之间的竞争，预计将强烈影响亲属选择的好处，因此，亲属偏见的强度和方向。此外，包容性健身的好处可能会出现在他们通常被忽视的情况下，如性选择。这些理论预测，这是一个重要的全面了解的运作亲属选择很少收到实证attention.The的目的是研究亲属偏见的行为及其后果，在不同的情况下，从合作期间的少年分组内的性竞争和配偶选择的双亲育雏照顾的社会一夫一妻制的慈鲷鱼Pelvicachromis taeniatus，其能够亲属识别并显示亲属交配偏好。行为学实验、分子标记和形态计量学方法将结合起来。特别是，我将集中在亲属竞争对亲属偏见行为的影响。此外，不寻常的交配偏好，在这个物种提供了一个独特的机会，研究生态要求的进化亲属偏见在择偶和近亲繁殖如何影响合作的演变。

Inclusive fitness theory, also termed kin selection theory, provides a general framework for the study of social behaviour predicting that differential treatment of kin, i.e. kin bias, can increase the inclusive fitness of an actor. However, ecological constraints like competition between kin are predicted to strongly affect kin selected benefits and, thus, the strength and direction of kin bias. Furthermore, inclusive fitness benefits might emerge in contexts where they are usually ignored like sexual selection. These theoretical predictions which are crucial for a comprehensive understanding of the operation of kin selection have received little empirical attention.The aim is to examine kin biased behaviour and its consequences in different contexts ranging from cooperation during juvenile grouping over intra-sexual competition and mate choice to biparental brood care in the socially monogamous cichlid fish Pelvicachromis taeniatus, which is capable of kin recognition and shows kin mating preferences. Behavioural experiments, molecular markers and morphometric methods will be combined. Particularly, I will focus on the impact of kin competition on kin biased behaviour. Further, the unusual mating preferences in this species provide a unique opportunity to examine the ecological requirements for the evolution of kin bias in mate choice and how inbreeding influences the evolution of cooperation.