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Preliminary results of the coalfish taggings 1954-58

Olsen, Steinar
Working paper
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CM_1959_Gad_Fish_Com_114.pdf (7.679Mb)
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http://hdl.handle.net/11250/2432897
Utgivelsesdato
1959
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  • ICES CM documents authored by IMR scientists (1949-2011) [3139]
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.
Utgiver
ICES
Serie
ICES CM Documents;1959/114

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