Loddeundersøkelser i Barentshavet vinteren 1978
Research report
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http://hdl.handle.net/11250/113055Utgivelsesdato
1979Metadata
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- Fisken og havet (1958- ) [700]
Sammendrag
During the period from 8 January to 4 May four vessels participated
in the capelin investigations and the monitoring of the spawning
migration. The spawning stock of capelin reached the Norwegian coast
about 16 March as two separate influxes, one from the Murman Coast to
the Varangerfjord area, and the other from the Skolpen Bank area
towards Makkaur on the Varanger peninsula.
During the pre-spawning season, mature capelin were to a great extent
mixed with young and immature capelin. However, the mature capelin
had a marked diurnal vertical migration. During daytime it was located
at rather unusual deep water. Due to this it was mostly catched
by the vessels with the largest purse seines. The spawning capelin
did not appear in as shallow water as usual.
The spawning population was dominated by the 1974 year class. Analysis
of biological samples showed that spawning had taken place at the
eastern Finnmark Coast. However, no eggs were found.
The hydrographic conditions were different from the last years. The
ice border was located more southerly than usual, and in coastal
waters the temperature was on an average l-1.5°C colder than in 1977.
Utgiver
HavforskningsinstituttetSerie
Fisken og havet1979-01