Results of investigations of migration pattern of artificially reared coastal cod (Gadus morhua L.) in western Norway

Investigations of the migration pattern have been a central part in an ongoing enhancement study of cod in western Norway. In Sept. - Nov. 1983, 20,947 juvenile, basin-reared cod fry were tagged and released at three sites in western Norway. Tag returns to 1 June 1987 were 15.4% (83-I), 2.0% (83-II)...

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Bibliographic Details
Main Authors: Svåsand, Terje, Godø, Olav Rune
Format: Report
Language:English
Published: ICES 1987
Subjects:
tagging
merking
cod
torsk
migration patterns
vandringsmønster
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925
Norway
Gadus morhua
Online Access:http://hdl.handle.net/11250/104324
Description
Summary:Investigations of the migration pattern have been a central part in an ongoing enhancement study of cod in western Norway. In Sept. - Nov. 1983, 20,947 juvenile, basin-reared cod fry were tagged and released at three sites in western Norway. Tag returns to 1 June 1987 were 15.4% (83-I), 2.0% (83-II) and 20.4% (83- III). Most cod were recaptured in shallow nearshore waters near the release sites. No significant changes in migration pattern with age were found. There did not seem to be any significant differences between the migration patterns of reared cod and wild cod tagged as juveniles in the same area.

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