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首页> 美国卫生研究院文献>Ecology and Evolution >Testing ontogenetic patterns of sexual size dimorphism against expectations of the expensive tissue hypothesis an intraspecific example using oyster toadfish (Opsanus tau)
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Testing ontogenetic patterns of sexual size dimorphism against expectations of the expensive tissue hypothesis an intraspecific example using oyster toadfish (Opsanus tau)

机译：针对昂贵的组织假说的期望测试性大小二态性的个体发育模式这是使用牡蛎蟾鱼（Opsanus tau）的种内示例

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Trade‐offs associated with sexual size dimorphism (SSD) are well documented across the Tree of Life. However, studies of SSD often do not consider potential investment trade‐offs between metabolically expensive structures under sexual selection and other morphological modules. Based on the expectations of the expensive tissue hypothesis, investment in one metabolically expensive structure should come at the direct cost of investment in another. Here, we examine allometric trends in the ontogeny of oyster toadfish (Opsanus tau) to test whether investment in structures known to have been influenced by strong sexual selection conform to these expectations. Despite recovering clear changes in the ontogeny of a sexually selected trait between males and females, we find no evidence for predicted ontogenetic trade‐offs with metabolically expensive organs. Our results are part of a growing body of work demonstrating that increased investment in one structure does not necessarily drive a wholesale loss of mass in one or more organs.
机译：生命之树中充分记录了与性大小二态性（SSD）相关的取舍。但是，对SSD的研究通常没有考虑在性选择和其他形态模块下代谢昂贵的结构之间的潜在投资折衷。基于对昂贵组织假说的期望，对一种代谢上昂贵的结构的投资应以对另一种代谢上昂贵的结构的直接投资为代价。在这里，我们研究了牡蛎蟾鱼（Opsanus tau）的个体发育中的异速生长趋势，以测试对已知已受到强烈性选择影响的结构的投资是否符合这些期望。尽管在雄性和雌性之间性选择的性状的个体发育中恢复了明显的变化，但我们没有发现与代谢昂贵的器官在预测的遗传学上进行权衡的证据。我们的结果是越来越多的工作的一部分，这表明增加对一种结构的投资并不一定会导致一个或多个器官的整体质量损失。

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