Phenotypic integration between claw and toepad traits promotes microhabitat specialization in the Anolis adaptive radiation
Autor: | Michael L. Yuan, Ian J. Wang, Marvalee H. Wake |
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Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
0301 basic medicine Claw Ecomorphology Biology 010603 evolutionary biology 01 natural sciences Anolis 03 medical and health sciences Adaptive radiation Genetics Animals Humans Ecosystem Ecology Evolution Behavior and Systematics Perch Foot Lizards Phenotypic trait biology.organism_classification Adaptation Physiological 030104 developmental biology Evolutionary biology Rate of evolution Adaptation General Agricultural and Biological Sciences |
Zdroj: | Evolution. 73:231-244 |
ISSN: | 1558-5646 0014-3820 |
Popis: | The performance of an organism in its environment frequently depends more on its composite phenotype than on individual phenotypic traits. Thus, understanding environmental adaptation requires investigating patterns of covariation across functionally related traits. The replicated adaptive radiations of Greater Antillean Anolis lizards are characterized by ecological and morphological convergence, thus, providing an opportunity to examine the role of multiple phenotypes in microhabitat adaptation. Here, we examine integrated claw and toepad morphological evolution in relation to habitat partitioning across the adaptive radiations of Greater Antillean anoles. Based on analysis of 428 specimens from 57 species, we found that different aspects of claw morphology were associated with different perch dimensions, with claw height positively associated with perch diameter and claw curvature positively associated with perch height. Patterns of integration also varied across claw and toepad traits, likely driven by correlative selection for performance on smoother and rougher substrates. Finally, rates of evolution differed between claw and toepad traits, with claw length evolving faster than all other traits despite having no predicted functional importance. Our results highlight the multivariate nature of phenotypic adaptation and suggest that phenotypic integration across Greater Antillean anoles is driven by fine-scale correlative selection based on structural habitat specialization. |
Databáze: | OpenAIRE |
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