Growth genes are implicated in the evolutionary divergence of sympatric piscivorous and insectivorous rainbow trout (Oncorhynchus mykiss).

ABSTRACT:

Background

Identifying ecologically significant phenotypic traits and the genomic mechanisms that underly them are crucial steps in understanding traits associated with population divergence. We used genome-wide data to identify genomic regions associated with key traits that distinguish two ecomorphs of rainbow trout (Oncorhynchus mykiss)-insectivores and piscivores-that coexist for the non-breeding portion of the year in Kootenay Lake, southeastern British Columbia. "Gerrards" are large-bodied, rapidly growing piscivores with high metabolic rates that spawn north of Kootenay Lake in the Lardeau River, in contrast to the insectivorous populations that are on average smaller in body size, with lower growth and metabolic rates, mainly forage on aquatic insects, and spawn in tributar

SUBMITTER: Grummer JA 

PROVIDER: S-EPMC8063319 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature