Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes.

ABSTRACT: Under incomplete reproductive isolation, secondary contact of diverged allopatric lineages may lead to the formation of hybrid zones that allow to study recombinants over several generations as excellent systems of genomic interactions resulting from the evolutionary forces acting on certain genes and phenotypes. Hybrid phenotypes may either exhibit intermediacy or, alternatively, transgressive traits, which exceed the extremes of their parents due to epistasis and segregation of complementary alleles. While transgressive morphotypes have been examined in fish, reptiles, birds, and mammals, studies in amphibians are rare. Here, we associate microsatellite-based genotypes with morphometrics-based morphotypes of two tree frog species of the Hyla arborea group, sampled across a hybrid

SUBMITTER: Majtyka T 

PROVIDER: S-EPMC8794711 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature