First evidence of spawning of eastern Baltic cod (Gadus morhua callarias) in the Belt Sea, the main spawning area of western Baltic cod (Gadus morhua L.)

Two cod stocks (western Baltic cod, WBC, and eastern Baltic cod, EBC) are managed in the Baltic Sea which is characterized by different main spawning areas and different main spawning periods. In this study we analyse the spatial and temporal occurrence of spawning individuals of both cod stocks in...

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Bibliographic Details
Published in:Journal of Applied Ichthyology
Main Authors: Stroganov, Andrei N., Bleil, Martina, Oeberst, Rainer, Semenova, Anna V., Winkler, Helmut
Format: Article in Journal/Newspaper
Language:English
Published: 2018
Subjects:
Online Access:https://doi.org/10.1111/jai.13550
https://www.openagrar.de/receive/openagrar_mods_00043642
https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00017202/dn059576.pdf
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Summary:Two cod stocks (western Baltic cod, WBC, and eastern Baltic cod, EBC) are managed in the Baltic Sea which is characterized by different main spawning areas and different main spawning periods. In this study we analyse the spatial and temporal occurrence of spawning individuals of both cod stocks in the main spawning grounds of the Baltic Sea based on eight microsatellite loci. Our results suggest that EBC (Gadus morhua callarias) has formed currently temporally stable, substantially homogeneous population not only in the Bornholm Sea (ICES SD: 25) but also in the Arkona Sea (ICES SD: 24). The presented analyses proved that EBC (G. m. callarias) can temporarily also spawn in the Belt Sea.