The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 2. Preliminary results of the experiment in 1992

The stage of spawning of females of the Arcto-Norwegian cod caught during peak spawning in Lofoten had a profound effect on several vital parameters of the eggs and larvae. Significant negative correlations were demonstrated between stage of spawning and size of eggs and larvae and total content of...

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Bibliographic Details
Main Authors: Solemdal, Per, Bergh, Øivind, Finn, Roderick Nigel, Fyhn, Hans Jørgen, Grahl-Nielsen, Otto, Homme, O., Kjesbu, Olav Sigurd, Kjørsvik, Elin, Opstad, Ingegjerd, Skiftesvik, Anne Berit
Format: Report
Language:English
Published: ICES 1992
Subjects:
cod
torsk
egg quality
eggkvalitet
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923
Lofoten
Online Access:http://hdl.handle.net/11250/105072
Description
Summary:The stage of spawning of females of the Arcto-Norwegian cod caught during peak spawning in Lofoten had a profound effect on several vital parameters of the eggs and larvae. Significant negative correlations were demonstrated between stage of spawning and size of eggs and larvae and total content of nonprotein amino compounds (NPS). Reduced larval activity was recorded in groups from cod females at the end of spawning. Investigations on the bacteriological status and the fatty acid profiles of the eggs are also included. The results are proposed in order to demonstrate a recruitment mechanism and are discussed in this connection.

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