Genetic Data Reveal Nonlocal Juvenile Recruitment and Variable Seasonal Movement of a Highly Mobile Marine Fish Across Alaska.

ABSTRACT: Movement patterns of marine fish are often difficult to accurately define given seasonal variation, ontogenetic shifts, and changing environmental conditions. However, outlining movement is crucial for understanding population dynamics, as well as for conservation and management efforts. Here, we evaluate seasonal adult movement and juvenile spatial distribution of Pacific cod (Gadus macrocephalus), a highly mobile and commercially important species, by developing and applying a genotyping-in-thousands by sequencing (GT-seq) panel. This panel identifies four genetically distinct stocks within Alaska waters with high confidence in assignment (97% average accuracy across stocks). The application of this panel to adult, summer-caught Pacific cod identified limited seasonal movement wit

SUBMITTER: Schaal SM 

PROVIDER: S-EPMC12772979 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature