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Mixed stock analysis and the power of different classes of molecular markers in discriminating coastal and oceanic Atlantic cod (Gadus morhua L.) on the Lofoten spawning grounds, Northern Norway Wennevik, V.; Jørstad, K.E.; Dahle, G.; Fevolden, S.-E. (2008). Mixed stock analysis and the power of different classes of molecular markers in discriminating coastal and oceanic Atlantic cod (Gadus morhua L.) on the Lofoten spawning grounds, Northern Norway, in: Davenport, J. et al. 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. 7-25. https://dx.doi.org/10.1007/978-1-4020-8808-7_1 In: Davenport, J. et al. (2008). Challenges to marine ecosystems: Proceedings of the 41st European Marine Biology Symposium, held in Cork, Ireland, 4-8 September 2005. European Marine Biology Symposia, 41. Developments in Hydrobiology, 202. ISBN 978-1-4020-8807-0; e-ISBN 978-1-4020-8808-7. 211 pp. https://dx.doi.org/10.1007/978-1-4020-8808-7 In: European Marine Biology Symposia. Is gerelateerd aan: Wennevik, V.; Jørstad, K.E.; Dahle, G.; Fevolden, S.-E. (2008). Mixed stock analysis and the power of different classes of molecular markers in discriminating coastal and oceanic Atlantic cod (Gadus morhua L.) on the Lofoten spawning grounds, Northern Norway. Hydrobiologia 606(1): 7-25. https://dx.doi.org/10.1007/s10750-008-9349-5, meer

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Beschikbaar in	Auteurs
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Documenttype: Congresbijdrage

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Trefwoorden

Acids > Organic compounds > Organic acids > Nucleic acids > DNA Analysis > Genetic analysis ANE, Norway, Lofoten I. ANE, Norway, Vestfjorden Biomarkers Classification Coastal zone Fauna > Aquatic organisms > Aquatic animals > Fish Fisheries Genetic engineering Marine biology Otoliths Population dynamics Spawning grounds Stock assessment Stocks Gadus morhua Linnaeus, 1758 [WoRMS] Lofoten [Marine Regions]; Vestfjorden [Marine Regions] Marien/Kust

Author keywords

Atlantic cod; mixed stock analysis; Pan I

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Auteurs		Top
Wennevik, V. Jørstad, K.E. Dahle, G. Fevolden, S.-E.

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Abstract

Atlantic cod (Gadus morhua) encompasses many different populations or stocks, which in part are managed separately. In the northeast Atlantic cod is divided into two main management units; northeast Arctic cod and coastal cod. These two groups have traditionally been separated by otolith classification. In this study, the power of different classes of genetic markers in separating the two cod groups was investigated. The variation in thirteen genetic markers, including allozymes, haemoglobin, the scDNA locus Pantophysin (Pan I) and a number of microsatellites was investigated, and mixed stock analysis and individual assignment tests were performed on samples comprising a mixture of individuals of putative coastal and oceanic type cod. The genetic analyses showed a large genetic differentiation between outer stations and stations located closer to the mainland shore. Mixed stock analysis and individual assignment tests used for estimation of stock proportions gave results similar to those obtained by otolith classification.

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