Contrasting life histories contribute to divergent patterns of genetic diversity and population connectivity in freshwater sculpin fishes.

ABSTRACT:

Background

Life history characteristics are considered important factors influencing the evolutionary processes of natural populations, including the patterns of population genetic structure of a species. The sister species Cottus hangiongensis and C. koreanus are small bottom-dwelling freshwater sculpin fishes from South Korea that display marked life history divergence but are morphologically nearly indistinguishable. Cottus hangiongensis evolved an 'amphidromous' life history with a post-hatching pelagic larval phase. They spawn many small eggs in the low reaches of rivers, and hatched larvae migrate to the sea before returning to grow to maturity in the river mouth. In contrast, C. koreanus evolved a 'fluvial' landlocked type with benthic larvae. They release a smaller number o

SUBMITTER: Baek SY 

PROVIDER: S-EPMC5896141 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature