Ontogeny of the morphology-performance axis in an amphibious fish (Kryptolebias marmoratus).
Ontogeny of the morphology-performance axis in an amphibious fish (Kryptolebias marmoratus).
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两栖鱼（Kryptolebias marmoratus）形态-性能轴的个体发育。
DOI：
10.1002/jez.2150
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Styga JM
中科院分区：
文献类型：
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作者：
Styga JM
建立形态和性能之间的联系是很重要的理解功能，生态和形态多样性的进化意义。形态和性能之间的关系，预计是年龄依赖性的，如果在个体发育过程中的不同点，动物必须执行不同的能力，以实现高健身回报。很少有研究探讨了个体发育过程中形式和功能之间的关系如何变化。在这里，我们评估这种关系的两栖红树林rivulus（Kryptolebias marmoratus）鱼，一个物种，既能够和依赖于“tail‐flip jumping”的陆地运动。尾空翻跳跃需要一个人将其重量转移到身体的尾部区域，将自己从基底上发射到新的水生或半水生栖息地。通过对237名不同年龄组的个体进行重复跳跃性能试验，并结合透明和染色程序以显示尾部区域的骨骼，我们检验了以下假设：随着年龄的增加，（i）平均跳跃性能（体长跳跃）将增加，（ii）每个性状的变异量将改变，以及（iii）性状之间的协变/相关模式，它告诉我们形式与功能的结合，也会改变。我们发现随着年龄的增长，尺寸调整的跳跃性能显着增加，并修改个体发育中性状之间的相关结构。然而，我们也发现，在年轻动物中明显的形式和功能之间的重要联系在后来的个体发育阶段消失了。我们的研究表明，不同的功能机制可能与不同发育阶段的高绩效相关。
Establishing links between morphology and performance is important for understanding the functional, ecological, and evolutionary implications of morphological diversity. Relationships between morphology and performance are expected to be age dependent if, at different points during ontogeny, animals must perform in different capacities to achieve high fitness returns. Few studies have examined how the relationship between form and function changes across ontogeny. Here, we assess this relationship in the amphibious mangrove rivulus (Kryptolebias marmoratus) fish, a species that is both capable of and reliant on “tail‐flip jumping” for terrestrial locomotion. Tail‐flip jumping entails an individual transferring its weight to the caudal region of the body, launching itself from the substrate to navigate to new aquatic or semi‐aquatic habitats. By combining repeated trials of jumping performance in 237 individuals from distinct age classes with a clearing and staining procedure to visualize bones in the caudal region, we test the hypotheses that as age increases (i) average jumping performance (body lengths jumped) will increase, (ii) the amount of variation for each trait will change, and (iii) the patterns of covariation/correlation among traits, which tell us about the integration of form with function, will also change. We find a significant increase in size‐adjusted jumping performance with age, and modification to the correlation structure among traits across ontogeny. However, we also find that significant links between form and function evident in young animals disappear at later ontogenetic stages. Our study suggests that different functional mechanisms may be associated with high performance at different stages of development.