Gene flow relates to evolutionary divergence among populations at the range margin.

ABSTRACT:

Background

Morphological differentiation between populations resulting from local adaptations to environmental conditions is likely to be more pronounced in populations with increasing genetic isolation. In a previous study a positive clinal variation in body size was observed in isolated Roesel's bush-cricket, Metrioptera roeselii, populations, but were absent from populations within a continuous distribution at the same latitudinal range. This observational study inferred that there was a phenotypic effect of gene flow on climate-induced selection in this species.

Methods

To disentangle genetic versus environmental drivers of population differences in morphology, we measured the size of four different body traits in wild-caught individuals from the two most distinct

SUBMITTER: Kanuch P 

PROVIDER: S-EPMC7585721 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature