Trans-Specific Polymorphisms Between Cryptic Daphnia Species Affect Fitness and Behavior.

ABSTRACT: Shared polymorphisms, loci with identical alleles across species, are of unique interest in evolutionary biology as they may represent cases of selection maintaining ancient genetic variation post-speciation, or contemporary selection promoting convergent evolution. In this study, we investigate the abundance of shared polymorphism between two members of the Daphnia pulex species complex. We test whether the presence of shared mutations is consistent with the action of balancing selection or alternative hypotheses such as hybridization, incomplete lineage sorting or convergent evolution. We analyzed over 2,000 genomes from six taxa in the D. pulex species group and examined the prevalence and distribution of shared alleles between the focal species pair, North American and European D. pule

SUBMITTER: Murray CS 

PROVIDER: S-EPMC11754708 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature