Projecting mechanics into morphospace: disparity in the feeding system of labrid fishes
Projecting mechanics into morphospace: disparity in the feeding system of labrid fishes
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DOI：
10.1098/rspb.2001.1874
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发表时间：
2002-02-07
影响因子：
4.7
通讯作者：
Wainwright, PC
中科院分区：
文献类型：
--
作者：
Hulsey, CD;Wainwright, PC
在任何一类生物体中，物种丰富度、形态差异、力学差异与功能或生态多样性之间的联系都没有明确的联系。作为整合这些多样性措施的一步，我们研究了104种大堡礁(GBR)鱼类的前颌四杆机构是如何映射到与尺度无关的形态空间的。正如理论预测的那样，在吃力的前颌关节中，总体尺寸与速度和力的传递机制之间没有关系。尽管如此，与前颌相关的力学似乎限制了令人费力的前颌形态的多样化。此外，模拟描述了单个链接的长度和运动传输之间的一般非线性关系。此外，在GBR中物种最丰富的抗性类群之间，没有发现形态差异和机械差异之间的关系。形态视差中形态空间等价的区域在机械视差中相差近一个数量级。这些结果表明，如果不明确解释单位形态变化的后果，仅从形态差异得出的多样化结论可能是误导的。
In no group of organisms has the link between species richness, morphological disparity, disparity in mechanics and functional or ecological diversification been made explicit. As a step towards integrating these measures of diversity, we examine how the mechanics of the anterior-jaw four-bar linkages of 104 species of Great Barrier Reef (GBR) labrid fishes maps into a scale-independent morphospace. As predicted from theory, no relationship exists between overall size and the mechanics of velocity and force transmission in labrid anterior-jaw linkages. Nonetheless, mechanics associated with the anterior jaw appear to have constrained diversification of labrid anterior-jaw morphology. Furthermore, simulations depict a generally nonlinear relationship between the length of individual links and transmission of motion. In addition, no relationship was found between morphological disparity and mechanical disparity among the most species-rich labrid groups from the GBR. It is also established that regions of morphospace equivalent in morphological disparity differ over nearly an order of magnitude in mechanical disparity. These results illustrate that without an explicit interpretation of the consequences of per unit change in morphology, conclusions about diversification drawn only from morphological disparity may be misleading.