Bartolino, Valerio
- Department of Aquatic Resources (SLU Aqua), Swedish University of Agricultural Sciences
Research article2023Peer reviewedOpen access
Mixed-stock analysis of Atlantic herring (Clupea harengus): a tool for identifying management units and complex migration dynamics
Bekkevold, Dorte; Berg, Florian; Polte, Patrick; Bartolino, Valerio; Ojaveer, Henn; Mosegaard, Henrik; Farrell, Edward D.; Fedotova, Jelena; Hemmer-Hansen, Jakob; Huwer, Bastian; Trijoulet, Vanessa; Albertsen, Christoffer Moesgaard; Fuentes-Pardo, Angela P.; Groehsler, Tomas; Pettersson, Mats; Jansen, Teunis; Folkvord, Arild; Andersson, Leif
Abstract
We developed and validated a mixed-stock analysis (MSA) method with 59 single-nucleotide polymorphisms selected from genome-wide data to assign individuals to populations in mixed-stock samples of Atlantic herring from the North and Baltic seas. We analysed 3734 herring from spawning locations and scientific catches of mixed feeding stocks to demonstrate a "one-fits-all" tool with unprecedented accuracy for monitoring spatio-temporal dynamics throughout a large geographical range with complex stock mixing. We re-analysed time-series data (2002-2021) and compared inferences about stock composition with estimates from morphological data. We show that contributions from the western Baltic spring-spawning stock complex, which is under management concern, have likely been overestimated. We also show that a genetically distinctive population of western Baltic autumn spawners, ascribed low fisheries importance, contributes non-negligible and potentially temporally increasing proportions to mixed-stock aggregations, calling for a re-evaluation of stock definitions. MSA data can be implemented in stock assessment and in a variety of applications, including marine ecosystem description, impact assessment of specific fleets, and stock-rebuilding plans.
Keywords
clupeid; genetic stock identification; genomics; management units; migration; mixed-stock analysis; population structure; SNP
Published in
ICES Journal of Marine Science
2023, Volume: 80, number: 1, pages: 173-184
Publisher: OXFORD UNIV PRESS
Andersson, Leif
- Department of Animal Biosciences, Swedish University of Agricultural Sciences
- Texas A&M University
- Uppsala University
- Department of Animal Biosciences, Swedish University of Agricultural Sciences
SLU Authors
Sustainable Development Goals
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
UKÄ Subject classification
Fish and Aquacultural Science
Publication identifier
DOI: https://doi.org/10.1093/icesjms/fsac223
Permanent link to this page (URI)
https://res.slu.se/id/publ/121189