Life history evolution in cichlids 1: revisiting the evolution of life histories in relation to parental care
Life history evolution in cichlids 1: revisiting the evolution of life histories in relation to parental care
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慈鲷的生活史进化1：重新审视与亲代照顾相关的生活史进化
DOI：
10.1111/j.1420-9101.2005.00984.x
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发表时间：
2006
影响因子：
2.1
通讯作者：
J. Reynolds
中科院分区：
文献类型：
--
作者：
N. Kolm;N. B. Goodwin;S. Balshine;J. Reynolds
鱼类卵子大小和亲代持续时间之间的经验联系已经产生了大量关于生活史进化的理论。然而，到目前为止，这种联系还没有被研究与其他重要的生活史特征，如卵子大小和身体大小，或控制物种之间的共同祖先。我们使用一个数据库提供了第一个基于系统发育的测试，该数据库包含了慈鱼的卵大小、窝卵大小、身体大小和照顾持续时间。基于物种和属水平的独立对比的多元回归分析表明，窝卵大小是与护理持续时间关系最密切的变量。这种模式似乎是由孵化后的护理关系驱动的。我们的结果表明，与预期相反，在叶蝉科中，卵大小和饲养时间之间没有正相关关系。相反，通过增加产卵量投资来获得更大的生殖产出，似乎与更多地照顾后代是共同进化的。我们认为，有必要重新评估当前鱼类在亲代照料下卵大小进化模型的普遍性。
Empirical links between egg size and duration of parental care in fishes have generated a considerable amount of theory concerning life history evolution. However, to date, this link has not been investigated in relation to other important life‐history traits such as clutch size and body size, or while controlling for shared ancestry between species. We provide the first phylogenetically based tests using a database with information on egg size, clutch size, body size and care duration in cichlid fishes (Cichlidae). Multiple regression analyses, based on independent contrasts on both the species and the genus level, showed that clutch size is the variable most closely related to duration of care. This pattern appeared to be driven by post‐hatch care relationships. Our results show that, contrary to expectation, there is no positive link between egg size and care duration in Cichlidae. Instead, greater reproductive output through increased clutch size investment appears to have coevolved with greater care of offspring. We suggest that re‐evaluation of the generality of current models of the evolution of egg size under parental care in fishes is needed.