Spatially and temporally varying selection influence species boundaries in two sympatric Mimulus.

ABSTRACT: Spatially and temporally varying selection can maintain genetic variation within and between populations, but it is less well known how these forces influence divergence between closely related species. We identify the interaction of temporal and spatial variation in selection and their role in either reinforcing or eroding divergence between two closely related Mimulus species. Using repeated reciprocal transplant experiments with advanced generation hybrids, we compare the strength of selection on quantitative traits involved in adaptation and reproductive isolation in Mimulus guttatus and Mimulus laciniatus between two years with dramatically different water availability. We found strong divergent habitat-mediated selection on traits in the direction of speci

SUBMITTER: Tataru D 

PROVIDER: S-EPMC9904950 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature