Preliminary results of the coalfish taggings 1954-58
Working paper
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http://hdl.handle.net/11250/2432897Utgivelsesdato
1959Metadata
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Sammendrag
From 1954 to 1958 more than 7 800 tagged coalfish were released,
mainly in North Norway, of which about 2 600 recoveries have been reported.
During the summer months the coalfish seem to be fairly stationary within limited
feeding areas, and the large mature fish appear to be visiting the same district
year after year. In the young immature fish there is a marked trend of gradual
movement towards north and east. The regular spawning migrations previously
reported on, are clearly demonstrated. In Finnmark migrations start from
October to December. By January the main bulk have reached the Malangen and
Lofoten banks where immature fish are left behind. On the spawning grounds tagged
fish are recaptured in January, February and March. The eventual return
migrations are not clearly demonstrated as only few mature fish are recaptured in
April, May and June. Since 1957 a number of recoveries has been reported from
Iceland and Faroe Islands as dealt with in a special report to this meeting. The
material has not yet been fully analysed for the purpose of estimating mortalities etc.