The distribution of young cod. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
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The distribution of young cod in the North Sea is described, using catch data from national and international trawl surveys and experimental fishing. Information on seasonal movements and feeding related to the concentration in the winter of I- and II-group cod in shallow, low salinity water is presented. The pelagic 0-group cod in June move rapidly inshore by September-October and remain there as I-group fish until the spring. In the summer the majority move offshore returning again for the winter as II-group. Cod older than II-group generally avoid shallow, low salinity water. An analysis of food types of the age groups indicates that this behaviour reduces cannibalism.