Die Reproduktion von Dorschen (Gadus morhua L. und Gadus morhua callarias L.) in der Ostsee unter besonderer Berücksichtigung der Arkonasee. Teil II: Statistische Analysen zum Anteil reproduktiv aktiver Dorsche in Bezug auf gebietsspezifische Unterschiede und Gemeinsamkeiten, sowie deren mögliche Ursachen.

Bleil, Martina and Oeberst, Rainer (2005) Die Reproduktion von Dorschen (Gadus morhua L. und Gadus morhua callarias L.) in der Ostsee unter besonderer Berücksichtigung der Arkonasee. Teil II: Statistische Analysen zum Anteil reproduktiv aktiver Dorsche in Bezug auf gebietsspezifische Unterschiede und Gemeinsamkeiten, sowie deren mögliche Ursachen. Informationen aus der Fischereiforschung = Information on Fishery Research, 52(1), pp. 83-90. DOI: 10.3220/Infn52_83-90_2005

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Official URL: http://aquacomm.fcla.edu/3071

Abstract

Surveys were conducted to analyse temporal and spatial aspects of the spawning activities of cod in the Baltic Sea from 1993 to 2003. Part I of the article describes the general maturity development and the spawning activities in the western Baltic Sea, the Arkona Sea and the Bornholm Sea. The studies suggest that two types of spawner can be distinguished, the spring spawner in the western Baltic Sea and the summer spawner in the Arkona Sea and the Bornholm Basin. The descriptive analysis is supported by statistical studies presented in this article. It is shown, that the proportion of spawning individuals is significantly higher in summer than in spring in the ArkonaSea and the Bornholm Sea. Furthermore, it is shown that reproductive mixing of both types of spawner is possible in the Arkona Sea in May/June due to the hydrographical conditions in the Arkona Sea which were suitable in 8 of 10 years for successful reproduction of both Baltic cod stocks, and that spatial expansion of spawning activities of the eastern Baltic cod stock into the Arkona Sea is positive correlated with the size of spawning stock in the Bornholm Sea.

Item Type: Article
Title: Die Reproduktion von Dorschen (Gadus morhua L. und Gadus morhua callarias L.) in der Ostsee unter besonderer Berücksichtigung der Arkonasee. Teil II: Statistische Analysen zum Anteil reproduktiv aktiver Dorsche in Bezug auf gebietsspezifische Unterschiede und Gemeinsamkeiten, sowie deren mögliche Ursachen.
Personal Creator/Author:
CreatorsEmail
Bleil, Martinamartina.bleil@vti.bund.de
Oeberst, Rainerrainer.oeberst@vti.bund.de
Refereed: No
Journal or Publication Title: Informationen aus der Fischereiforschung = Information on Fishery Research
Volume: 52
Number: 1
Page Range: pp. 83-90
Date: 2005
ISSN: 1861-2164
Contact Email Address: martina.bleil@vti.bund.de
Issuing Agency: Bundesforschungsanstalt für Fischerei
Additional Information: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery Research in 2010.
Uncontrolled Keywords: recruitment; hydrographic conditions
Subjects: Fisheries
Biology
Item ID: 3071
Depositing User: Horst Bahl
Date Deposited: 15 Apr 2010 12:43
Last Modified: 29 Sep 2011 17:57
URI: http://aquaticcommons.org/id/eprint/3071

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