Simulated trapping and trawling exert similar selection on fish morphology.

ABSTRACT: Commercial fishery harvest can influence the evolution of wild fish populations. Our knowledge of selection on morphology is however limited, with most previous studies focusing on body size, age, and maturation. Within species, variation in morphology can influence locomotor ability, possibly making some individuals more vulnerable to capture by fishing gears. Additionally, selection on morphology has the potential to influence other foraging, behavioral, and life-history related traits. Here we carried out simulated fishing using two types of gears: a trawl (an active gear) and a trap (a passive gear), to assess morphological trait-based selection in relation to capture vulnerability. Using geometric morphometrics, we assessed differences in shape between high and low vulnerability fish,

SUBMITTER: Thambithurai D 

PROVIDER: S-EPMC8840878 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature