A century of anthropogenic perturbations impact genomic signatures of the iconic migratory Atlantic cod.

ABSTRACT: Anthropogenic stressors have led to marked ecosystem perturbations, including population declines and shifts in habitat range for key marine fish species. Understanding how these changes affect genome-wide characteristics, causing long-term evolutionary responses, is still in its infancy. Genome-wide retrospective assessment of the iconic migratory Atlantic cod (Gadus morhua) from the Barents Sea, unraveled varying degree of admixture with the nonmigratory coastal ecotype throughout the 20th century, and intriguingly more intensified during recent decades. These genomic changes were supported by an increased number of individuals displaying the heterozygous state of the chromosomal inversion coupled to migratory behavior in Atlantic cod. Ecological models and genome-wide scans ident

SUBMITTER: Helmerson C 

PROVIDER: S-EPMC12309680 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature