TY - JOUR

T1 - Polymorphism, parallel evolution, and purpose of dewlap hue in Lesser Antillean Dactyloa anoles

AU - Thorpe, Roger

AU - Johansson, Helena

AU - Surget-Groba, Yann

AU - Thorpe, Jacqueline

PY - 2024/9/26

Y1 - 2024/9/26

N2 - Against a background of conservative dewlap hue among Lesser Antillean Dactyloa anoles, within-population polymorphism is present in a Martinique habitat where UV/grey dewlaps are markedly different to the widespread yellow/orange dewlaps. Moreover, parallel evolution on Martinique and St. Vincent of 1) UV/grey dewlaps in similar habitats, and 2) small but consistent differences between dewlap hue in xeric versus montane habitats, imply natural selection. Anole dewlaps are widely thought to have a role in species recognition and potentially act as a pre-mating isolating mechanism, and this is compatible with the degree of genetic isolation in an “ecological speciation” paradigm, but not in an “allopatric speciation” paradigm

AB - Against a background of conservative dewlap hue among Lesser Antillean Dactyloa anoles, within-population polymorphism is present in a Martinique habitat where UV/grey dewlaps are markedly different to the widespread yellow/orange dewlaps. Moreover, parallel evolution on Martinique and St. Vincent of 1) UV/grey dewlaps in similar habitats, and 2) small but consistent differences between dewlap hue in xeric versus montane habitats, imply natural selection. Anole dewlaps are widely thought to have a role in species recognition and potentially act as a pre-mating isolating mechanism, and this is compatible with the degree of genetic isolation in an “ecological speciation” paradigm, but not in an “allopatric speciation” paradigm

KW - anole, Dactyloa, Lesser Antilles, dewlap, spectrometry, ultraviolet markings, parallel evolution, speciation, isolating mechanisms.

U2 - 10.31611/ch.96

DO - 10.31611/ch.96

M3 - Article

VL - 96

SP - 1

EP - 13

JO - Caribbean Herpetology

JF - Caribbean Herpetology

IS - 96

M1 - 96

ER -