Kin recognition and inbreeding avoidance in zebrafish, Danio rerio, is based on phenotype matching
Kin recognition and inbreeding avoidance in zebrafish, Danio rerio, is based on phenotype matching
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DOI：
10.1016/j.anbehav.2005.10.010
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发表时间：
2006-06-01
期刊：
影响因子：
2.5
通讯作者：
Lysiak, Nadine
中科院分区：
文献类型：
--
作者：
Gerlach, Gabriele;Lysiak, Nadine
将亲属与非亲属区分开来，使许多物种的生物体能够向相关的同种动物分配资源或利他行为，并避免与近亲交配。亲属识别机制可能因物种而异，并且可能反映社会环境。只要社会系统足够稳定，能够避免不相关的个体与兄弟姐妹混在一起，对巢穴或浅滩同伴的熟悉程度就可以很好地表明个体之间存在相关性。表型匹配甚至可以识别不熟悉的亲属，因为个体在早期发育过程中为其亲属建立了嗅觉、视觉或听觉模板，并将该模板与以后生活中不熟悉个体的线索进行比较。我们测试了斑马鱼使用哪种亲属识别机制，我们发现对亲属的偏好随着性成熟而变化。在气味选择水槽中测试了实验室饲养的幼鱼和繁殖活跃的成鱼的嗅觉偏好。混合性别群体的青少年比不熟悉的非亲属花费更多的时间在不熟悉的亲属一边，这表明亲属识别和偏好是基于表型匹配机制的。他们还更喜欢熟悉的亲属而不是不熟悉的亲属，这表明对个人的熟悉会增强亲属偏好。偏好随着性成熟而改变。成年雌性更喜欢不熟悉的、不相关的雄性的气味，而不是不熟悉的兄弟的气味，这表明避免近亲繁殖。成年雄性斑马鱼对相关或无关雌性的气味没有表现出偏好。据我们所知，这是第一项测试同一物种鱼类的不同亲缘识别机制和亲缘偏好转换的研究。 (c) 2006 年动物行为研究协会由爱思唯尔有限公司出版。保留所有权利。
Differentiating kin from nonkin enables organisms of many species to allocate resources or altruistic behaviour towards related conspecifics and to avoid mating with close relatives. Kin recognition mechanisms can vary among species and may reflect the social environment. Learned familiarity with nest or shoalmates may serve as a good indication that individuals are related, as long as the social system is sufficiently stable to avoid intermingling of unrelated individuals with siblings. Phenotype matching allows for recognition of even unfamiliar kin because individuals establish an olfactory, visual or acoustic template for their kin during early development and compare this template to cues from unfamiliar individuals later in life. We tested which kin recognition mechanism is used by zebrafish and we found that the preference for kin changes with sexual maturity. The olfactory preference of laboratory-bred juveniles and reproductively active adults were tested in an odour choice flume. juveniles of mixed-sex groups spent more time on the side of unfamiliar kin than unfamiliar nonkin, indicating that kin recognition and preference are based on a phenotype matching mechanism. They also preferred familiar kin to unfamiliar kin, showing that familiarity with individuals enhances kin preference. Preference changed with sexual maturity. Adult females preferred the odour of unfamiliar, unrelated males to unfamiliar brothers, indicating inbreeding avoidance. Adult male zebrafish showed no preference for the odour of related or unrelated females. To our knowledge, this is the first study testing different kin recognition mechanisms and switching of kin preference in the same species of fish. (c) 2006 The Association for the Study of Animal Behaviour Published by Elsevier Ltd. All rights reserved.