Gene-associated markers can assign origin in a weakly structured fish, Atlantic herring

Dorte Bekkevold*, Sarah J. Helyar, Morten T. Limborg, Einar E. Nielsen, Jakob Hemmer-Hansen, Lotte A W Clausen, Gary R. Carvalho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Regulations on the exploitation of populations of commercially important fish species and the ensuing consumer interest in sustainable products have increased the need to accurately identify the population of origin of fish and fish products. Although genomics-based tools have proven highly useful, there are relatively few examples in marine fish displaying accurate origin assignment. We synthesize data for 156 single-nucleotide polymorphisms typed in 1039 herring, Clupea harengus L., spanning the Northeast Atlantic to develop a tool that allows assignment of individual herring to their regional origin. We show the method's suitability to address specific biological questions, as well as management applications. We analyse temporally replicated collections from two areas, the Skagerrak (n = 81, 84, 66) and the western Baltic (n = 52, 52). Both areas harbour heavily fished mixed-origin stocks, complicating management issues. We report novel genetic evidence that herring from the Baltic Sea contribute to catches in the North Sea, and find support that western Baltic feeding aggregations mainly constitute herring from the western Baltic with contributions from the Eastern Baltic. Our study describes a general approach and outlines a database allowing individual assignment and traceability of herring across a large part of its East Atlantic distribution.

Original languageEnglish
Pages (from-to)1790-1801
Number of pages12
JournalICES Journal of Marine Science
Volume72
Issue number6
Early online date23 Feb 2015
DOIs
Publication statusPublished - Jul 2015

Keywords

  • genetic monitoring
  • genetic stock identification
  • mixed-stock analysis
  • population structure
  • single-nucleotide polymorphism
  • small pelagic fish

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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