Kin recognition by phenotype matching is family- rather than self-referential in juvenile cichlid fish
Kin recognition by phenotype matching is family- rather than self-referential in juvenile cichlid fish
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DOI：
10.1016/j.anbehav.2012.05.021
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发表时间：
2012-08-01
期刊：
影响因子：
2.5
通讯作者：
Thuenken, Timo
中科院分区：
文献类型：
--
作者：
Hesse, Saskia;Bakker, Theo C. M.;Thuenken, Timo
区分亲属和非亲属的能力在裙带关系和择偶环境中非常重要。表型匹配是一种重要的亲属识别机制，在动物中广泛存在。然而，潜在的直接机制仍然知之甚少。表型匹配可以基于自我参照或家族印记。我们根据化学线索研究了幼年 Pelvicachromis taeniatus 的表型匹配。 Pelvicachromis taeniatus 是一种社会性一夫一妻制的慈鲷鱼，有双亲育雏。先前的研究表明，成年人使用表型匹配来识别亲属。幼鱼在三种不同的条件下饲养以操纵识别模板：（1）与亲属一起饲养，（2）单独饲养或（3）与寄养兄弟姐妹一起饲养。 Pelvicachromis pulcher 家庭担任寄养家庭。在实验中，测试鱼必须在从与测试鱼相关性不同的两个刺激浅滩获得的嗅觉线索之间进行选择。与亲属一起饲养的测试鱼将不熟悉的亲属与不熟悉的非亲属区分开来，这表明幼体带状 P. taeniatus 也使用表型匹配来识别亲属。单独饲养或与寄养兄弟姐妹一起饲养的焦点鱼并没有显着区分不熟悉的亲属和不熟悉的非亲属，这表明幼鱼没有留下自己的表型特征。然而，与寄养兄弟姐妹一起抚养的个体更喜欢寄养物种的不熟悉的嗅觉刺激，而不是自己的嗅觉刺激，这表明他们使用抚养伙伴作为参考。因此，表型匹配可能是基于家族印记，而不是幼年 P. taeniatus 的自我参照。 (C) 2012 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。
The ability to differentiate between kin and nonkin is of importance in nepotistic as well as in mate choice contexts. Phenotype matching is a significant kin recognition mechanism, which is widespread in animals. However, the underlying proximate mechanisms are still poorly understood. Phenotype matching can be based on either self-reference or familial imprinting. We investigated phenotype matching in juvenile Pelvicachromis taeniatus based on chemical cues. Pelvicachromis taeniatus is a socially monogamous cichlid fish with biparental brood care. Previous studies indicate that the adults use phenotype matching to recognize kin. Juvenile fish were reared under three different conditions to manipulate recognition templates: (1) reared with kin, (2) reared in isolation or (3) reared with foster siblings. Pelvicachromis pulcher families served as foster families. In the experiments, test fish had to choose between olfactory cues obtained from two stimulus shoals differing in relatedness to the test fish. Test fish reared with kin discriminated unfamiliar kin from unfamiliar nonkin indicating that juvenile P. taeniatus also use phenotype matching to recognize kin. Focal fish reared in isolation or with foster siblings did not significantly discriminate unfamiliar kin from unfamiliar nonkin suggesting that juveniles did not imprint on their own phenotypic traits. However, individuals reared with foster siblings preferred unfamiliar olfactory stimuli of the foster species over those of their own indicating they used rearing partners as reference. Thus, phenotype matching is probably based on familial imprinting rather than self-reference in juvenile P. taeniatus. (C) 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.