Blue whiting (Micromesistius poutassou) stock components in samples from the northern Norwegian Sea and Barents Sea, winter 2002 ...

• Main Authors: Varne, Rebekka, Mork, Jarle
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2004 - EE - Theme session 2024
• Subjects: Fisheries and aquaculture; Technologies and data; Barents Sea; Norwegian Sea
• Online Access: https://dx.doi.org/10.17895/ices.pub.25349269; https://ices-library.figshare.com/articles/conference_contribution/Blue_whiting_Micromesistius_poutassou_stock_components_in_samples_from_the_northern_Norwegian_Sea_and_Barents_Sea_winter_2002/25349269

No abstracts are to be cited without prior reference to the author.Blue whiting from the eastern parts of the Barents Sea are genetically different from other parts of the northeast East Atlantic, indicating the existence of a self-sustaining and reproductively isolated or semi-isolated stock there. In mid- and western Barents Sea, its geographic distribution may overlap with Hebrido-Norwegian blue whiting on summer feeding migration. Circumstantial evidence from egg- and larvae distributions supports such a stock structure. Based on observation of unusually large amounts of young blue whiting in the northwest Barents Sea in 2000 and 2001, a sampling scheme encompassing the entire Barents Sea was designed and carried out in winter 2002 to explore the stock origin of these. The polymorphic isozyme loci PGM-1* and IDHP-2*, which showed discriminatory power in earlier blue whiting studies, were employed. The genetic analyses did not reveal overall genetic heterogeneity among geographic samples, but more ...