Hypoxia alters vulnerability to capture and the potential for trait-based selection in a scaled-down trawl fishery

Davide Thambithurai; Amelie Crespel; Tommy Norin; Anita Rácz; Jan Lindström; Kevin J Parsons; Shaun S Killen

doi:10.1093/conphys/coz082

Hypoxia alters vulnerability to capture and the potential for trait-based selection in a scaled-down trawl fishery

Conserv Physiol. 2019 Nov 27;7(1):coz082. doi: 10.1093/conphys/coz082. eCollection 2019.

Authors

Davide Thambithurai¹, Amelie Crespel¹, Tommy Norin^{1

2}, Anita Rácz^{1

3}, Jan Lindström¹, Kevin J Parsons¹, Shaun S Killen¹

Affiliations

¹ Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK.
² DTU Aqua: National Institute of Aquatic Resources, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark.
³ Department of Genetics, Eötvös Loránd University, Pázmány P.s. 1C, H-1117 Budapest, Hungary.

Abstract

Lay summary Selective harvest of wild organisms by humans can influence the evolution of plants and animals, and fishing is recognized as a particularly strong driver of this process. Importantly, these effects occur alongside environmental change. Here we show that aquatic hypoxia can alter which individuals within a fish population are vulnerable to capture by trawling, potentially altering the selection and evolutionary effects stemming from commercial fisheries.

Keywords: environmental stress; fisheries-induced evolution; hypoxia; swimming performance; trawling.