Hybridization and adaptive introgression in a marine invasive species in native habitats.

ABSTRACT: Hybridization of distinct populations or species is an important evolutionary driving force. For invasive species, hybridization can enhance their competitive advantage as a source of adaptive novelty by introgression of selectively favored alleles. Using single-nucleotide polymorphism (SNP) microarrays we assess genetic diversity and population structure in the invasive ctenophore Mnemiopsis leidyi in native habitats. Hybrids are present at the distribution border of two lineages, especially in highly fluctuating environments including very low salinities, while hybrids occur at lower frequency in stable high-saline habitats. Analyses of hybridization status suggest that hybrids thriving in variable environments are selected for, while they are selected against in stable habitats.

SUBMITTER: Pujolar JM 

PROVIDER: S-EPMC10698267 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature