INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
artículos
Título:
When a general morphology allows many habitat uses
Autor/es:
TULLI, MARÍA JOSÉ; ABDALA, V; CRUZ, FB; KOHLSDORF, TIANA
Revista:
Integrative zoology
Editorial:
Wiley
Referencias:
Año: 2016 vol. 41 p. 473 - 489
ISSN:
1749-4877
Resumen:
Evolution of associations between morphology and ecology is evident in several Squamate lineages. Locomotion is an essential aspect that underlies the associations so far identified, representing a major link between the phenotype of an organism and its ecology. Recently, the morphological basis for functional morphology has been revitalized and more detailed data on the internal anatomy are being incorporated for a better understanding of the actual features involved in locomotion. Here we focus on two lizard families, Tropiduridae and Liolaemidae, and use information of muscle-tendinous and external morphology traits of hind legs to investigate whether a) the value of the traits analyzed tend to exhibit a reduced phenotypic variation produced by stabilizing selection; and b) species showing specialization in their habitat use will also exhibit special morphological features related to it. As a result, we identified that evolution of hind limb traits and of muscle-tendinous variables is mainly explained by the Ornstein-Uhlenbeck model, suggesting stabilizing selection. Liolaemids and tropidurids show clear ecomorphological trends in the variables considered, with sand lizards presenting the most specialized morphological traits. Some ecomorphological trends differ between the two lineages, and traits of internal morphology tend to be more flexible than those of external morphology, restricting the ability to identify ecomorphs shared between these two lineages. Conservative traits of external morphology likely explain such restriction, as ecomorphs have been historically defined in other lizard clades based on variation of external morphology