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Oceanographic connectivity and environmental correlates of genetic structuring in Atlantic herring in the Baltic Sea.
Evol Appl. 2013 Apr; 6(3):549-67.EA

Abstract

Marine fish often show little genetic structuring in neutral marker genes, and Atlantic herring (Clupea harengus) in the Baltic Sea are no exception; historically, very low levels of population differentiation (F ST ≍ 0.002) have been found, despite a high degree of interpopulation environmental heterogeneity in salinity and temperature. Recent exome sequencing and SNP studies have however shown that many loci are under selection in this system. Here, we combined population genetic analyses of a large number of transcriptome-derived microsatellite markers with oceanographic modelling to investigate genetic differentiation and connectivity in Atlantic herring at a relatively fine scale within the Baltic Sea. We found evidence for weak but robust and significant genetic structuring (F ST = 0.008) explainable by oceanographic connectivity. Genetic differentiation was also associated with site differences in temperature and salinity, with the result driven by the locus Her14 which appears to be under directional selection (F ST = 0.08). The results show that Baltic herring are genetically structured within the Baltic Sea, and highlight the role of oceanography and environmental factors in explaining this structuring. The results also have implications for the management of herring fisheries, the most economically important fishery in the Baltic Sea, suggesting that the current fisheries management units may be in need of revision.

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Authors+Show Affiliations

Teacher AG
Department of Biosciences, University of Helsinki Helsinki, Finland ; Centre for Ecology and Conservation, University of Exeter Cornwall, UK.
André C
No affiliation info available
Jonsson PR
No affiliation info available
Merilä J
No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23745145

Citation

Teacher, Amber Gf, et al. "Oceanographic Connectivity and Environmental Correlates of Genetic Structuring in Atlantic Herring in the Baltic Sea." Evolutionary Applications, vol. 6, no. 3, 2013, pp. 549-67.
Teacher AG, André C, Jonsson PR, et al. Oceanographic connectivity and environmental correlates of genetic structuring in Atlantic herring in the Baltic Sea. Evol Appl. 2013;6(3):549-67.
Teacher, A. G., André, C., Jonsson, P. R., & Merilä, J. (2013). Oceanographic connectivity and environmental correlates of genetic structuring in Atlantic herring in the Baltic Sea. Evolutionary Applications, 6(3), 549-67. https://doi.org/10.1111/eva.12042
Teacher AG, et al. Oceanographic Connectivity and Environmental Correlates of Genetic Structuring in Atlantic Herring in the Baltic Sea. Evol Appl. 2013;6(3):549-67. PubMed PMID: 23745145.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Oceanographic connectivity and environmental correlates of genetic structuring in Atlantic herring in the Baltic Sea. AU - Teacher,Amber Gf, AU - André,Carl, AU - Jonsson,Per R, AU - Merilä,Juha, Y1 - 2013/02/04/ PY - 2012/05/20/received PY - 2012/11/27/accepted PY - 2013/6/8/entrez PY - 2013/6/8/pubmed PY - 2013/6/8/medline KW - Baltic Sea KW - Clupeaharengus KW - fisheries KW - genetics KW - herring KW - microsatellite KW - selection KW - transcriptome SP - 549 EP - 67 JF - Evolutionary applications JO - Evol Appl VL - 6 IS - 3 N2 - Marine fish often show little genetic structuring in neutral marker genes, and Atlantic herring (Clupea harengus) in the Baltic Sea are no exception; historically, very low levels of population differentiation (F ST ≍ 0.002) have been found, despite a high degree of interpopulation environmental heterogeneity in salinity and temperature. Recent exome sequencing and SNP studies have however shown that many loci are under selection in this system. Here, we combined population genetic analyses of a large number of transcriptome-derived microsatellite markers with oceanographic modelling to investigate genetic differentiation and connectivity in Atlantic herring at a relatively fine scale within the Baltic Sea. We found evidence for weak but robust and significant genetic structuring (F ST = 0.008) explainable by oceanographic connectivity. Genetic differentiation was also associated with site differences in temperature and salinity, with the result driven by the locus Her14 which appears to be under directional selection (F ST = 0.08). The results show that Baltic herring are genetically structured within the Baltic Sea, and highlight the role of oceanography and environmental factors in explaining this structuring. The results also have implications for the management of herring fisheries, the most economically important fishery in the Baltic Sea, suggesting that the current fisheries management units may be in need of revision. SN - 1752-4571 UR - https://www.unboundmedicine.com/medline/citation/23745145/Oceanographic_connectivity_and_environmental_correlates_of_genetic_structuring_in_Atlantic_herring_in_the_Baltic_Sea_ L2 - https://doi.org/10.1111/eva.12042 DB - PRIME DP - Unbound Medicine ER -