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Evolutionary genetics of Atlantic salmon (Salmo salar L.)

molecular markers and applications

Vasemägi, Anti (2004). Evolutionary genetics of Atlantic salmon (Salmo salar L.). Diss. (sammanfattning/summary) Umeå : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Silvestria, 1401-6230 ; 324
ISBN ISBN 91-576-6708-X
[Doctoral thesis]

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This thesis deals with evolutionary genetics of Atlantic salmon populations, with the special emphasis on the roles of migration, random genetic drift, mutation and natural selection affecting the patterns of molecular variation across contemporary and historical time scales. Studies of mitochondrial DNA variation supported the hypothesis of multiple post-glacial colonization events of the Baltic Sea. The Eastern Atlantic populations differ from the geographically close southern Baltic populations, indicating absence of inward and limited outward gene flow through the Danish straits during the last 8000 years. Four common European mitochondrial haplotypes derive from the ancestral ND1-BBBA haplotype by one-step substitutions. Our results suggest that wild populations still have an important role in re-colonization processes of the former salmon rivers where salmon populations have been driven to extinction due to human activities. Spatio-temporal analysis over eighteen years provided genetic evidence of immigration from compensatory hatchery releases into one of the biggest wild Atlantic salmon population in the Baltic Sea and emphasize the genetic risks associated with current large-scale stocking practices in the Baltic. For restoration of former salmon rivers in the Gulf of Finland we recommend that two closest native salmon populations should be preferred to help to fill in the currently missing “building blocks” that are important for the persistence of genetic variation and long-term survival of salmon populations in Estonia. We identified several expressed sequence tag (EST) loci that are potentially affected by divergent selection demonstrating that EST-scans may provide suitable strategy to discover functionally important genetic variation both in model and non-model organisms.

Authors/Creators:Vasemägi, Anti
Title:Evolutionary genetics of Atlantic salmon (Salmo salar L.)
Subtitle:molecular markers and applications
Series Name/Journal:Acta Universitatis Agriculturae Sueciae. Silvestria
Year of publishing :August 2004
Number of Pages:26
ALLNilsson, J., Gross, R., Asplund, T., Dove, O., Jansson, H., Kelloniemi, J., Kohlmann, K., Löytynoja, A., Nielsen, E.E., Paaver, T., Primmer, CR., Titov, S., Vasemägi, A., Veselov, A., Öst, T. & Lumme, J. 2001. Matrilinear phylogeography of Atlantic salmon (Salmo salar L.) in Europe and postglacial colonisation of the Baltic Sea area. Molecular Ecology, 1, 89-102. Vasemägi, A., Gross, R., Paaver, T., Kangur, M., Nilsson, J. & Eriksson,L-O. 2001. Identification of the origin of Atlantic salmon (Salmo salar L.)population in a recently recolonized river in the Baltic Sea. Molecular Ecology, 10, 2877-2882. Vasemägi, A., Gross, R., Paaver, T., Koljonen, M-L. & Nilsson, J. Caught at scene: extensive immigration from compensatory hatchery releases into wild Atlantic salmon population in the Baltic Sea. Submitted. Vasemägi, A., Gross, R., Paaver, T., Koljonen, M-L., Säisä, M. & Nilsson, J. Analysis of gene associated tandem repeat markers in Atlantic salmon (Salmo salar L.) populations: implications for restoration and conservation in the Baltic Sea. Accepted in Conservation Genetics. Vasemägi, A., Nilsson, J. & Primmer, C.R. Expressed sequence tag (EST) linked microsatellites as a source of gene associated polymorphisms for detecting signatures of divergent selection in Atlantic salmon (Salmo salar L.). Submitted.
Place of Publication:Umeå
ISBN for printed version:ISBN 91-576-6708-X
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L10 Animal genetics and breeding
M Aquatic sciences and fisheries > M40 Aquatic ecology
Subjects:Not in use, please see Agris categories
Agrovoc terms:salmo salar, population genetics, mitochondria, dna, natural selection, adaptation, animal migration
Keywords:population genetics, microsatellites, mitochondrial DNA, MHC, adaptation, natural selection, migration, genetic drift, expressed sequence tags, EST
Permanent URL:
ID Code:605
Department:(NL, NJ) > Institutionen för vattenbruk (990101-061231)
Deposited By: Anti Vasemägi
Deposited On:27 Aug 2004 00:00
Metadata Last Modified:02 Dec 2014 10:05

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