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Contrasting levels of genetic differentiation among putative neutral microsatellite loci in Atlantic herring Clupea harengus populations and the implications for assessing stock structure
Watts, P.C.; O'Leary, D.; Cross, M.C.; Coughlan, J.; Dillane, E.; Kay, S.M.; Wylde, S.; Stet, R.; Nash, R.D.M.; Hatfield, E.M.C.; Cross, T.F. (2008). Contrasting levels of genetic differentiation among putative neutral microsatellite loci in Atlantic herring Clupea harengus populations and the implications for assessing stock structure. Hydrobiologia 597(1): 27-33. dx.doi.org/10.1007/s10750-008-9350-z
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

Also published as
  • Watts, P.C.; O'Leary, D.; Cross, M.C.; Coughlan, J.; Dillane, E.; Kay, S.M.; Wylde, S.; Stet, R.; Nash, R.D.M.; Hatfield, E.M.C.; Cross, T.F. (2008). Contrasting levels of genetic differentiation among putative neutral microsatellite loci in Atlantic herring Clupea harengus populations and the implications for assessing stock structure, in: Davenport, J. et al. (Ed.) Challenges to Marine Ecosystems: Proceedings of the 41st European Marine Biology Symposium, held in Cork, Ireland, 4-8 September 2005. Developments in Hydrobiology, 202: pp. 27-33, more

Available in  Authors 
Document type: Conference paper

Keywords
    Biomarkers; Genetic engineering; Genetic markers; Heterozygosity; Marine biology; Natural selection; Nucleotides; Population dynamics; Population genetics; Selection; Selection; Stock assessment; Clupea harengus Linnaeus, 1758 [WoRMS]; AN, North Atlantic [Marine Regions]; ANE, Baltic [Marine Regions]; ANE, British Isles [Marine Regions]; Europe, West [Marine Regions]; Marine

Authors  Top 
  • Watts, P.C.
  • O'Leary, D.
  • Cross, M.C.
  • Coughlan, J.
  • Dillane, E.
  • Kay, S.M.
  • Wylde, S.
  • Stet, R.
  • Nash, R.D.M.
  • Hatfield, E.M.C.
  • Cross, T.F.

Abstract
    Microsatellite DNA loci, when used in population genetic studies, are usually assumed to be neutral (unaffected by natural selection, either directly or as a result of tight linkage), but this assumption is rarely tested. Here, the assumption of neutrality is examined using established methods, principally that based on the expected relationship between F ST and heterozygosity, at 12 putative neutral microsatellite loci utilised in a study of Atlantic herring Clupea harengus in the north east Atlantic (west of Great Britain and around Ireland) and in the Baltic Sea. All but two of these loci demonstrate relationships that suggest that they may be regarded as neutral genetic markers. Of the other two loci, however, one shows a relationship suggestive of the action of directional selection and the other of balancing natural selection, though other locus-specific effects may operate. Thus, the latter two loci may provide inaccurate inference if used in phylogeographic studies and also demonstrate the danger of assuming neutrality at all microsatellite loci without explicit testing. However, such loci, particularly those affected by directional as opposed to balancing selection, may be of great use in stock discrimination studies, and selected loci in general, have considerably potential in studies of adaptation.

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