Developmental dynamics of ecomorphological convergence in a transcontinental lizard radiation
Christy A Hipsley, Johannes Mueller
EVOLUTION | WILEY | Published : 2017
Phenotypic convergence has confounded evolutionary biologists for centuries, explained as adaptations to shared selective pressures, or alternatively, the result of limited developmental pathways. We tested the relative roles of adaptation and constraint in generating convergent cranial morphologies across a large lizard radiation, the Lacertidae, whose members inhabit diverse environments throughout the Old World and display high amounts of homoplasy associated with ecological niche. Using 3D X-ray computed tomography, we quantified cranial shape variation associated with ontogeny, allometry, and ecology, covering all lacertid genera and one-third of species diversity. Landmark-based geomet..View full abstract
Awarded by National Science Foundation (NSF)
We thank M.-O. Rodel and F. Tillack for access to museum specimens; N. Kardjilov and A. Hilger for CT support; E. Sherratt, D. Adams, and M. Collyer for help with geomorph; and T. Stayton for advice on convevol. We are also grateful to A. Corl and M. Jones for comments on an earlier draft, and to J. Ortega Gimenez, T. Mazuch, J. Melville, M.-O. Rodel, and P. Wagner for lacertid pictures. This study was partly inspired by C. Klingenberg's 2011 workshop on Geometric Morphometrics in Telc, Czech Republic. Work was funded by a National Science Foundation (NSF) grant IRES-1028073 to CAH. The authors declare no conflict of interest.