Migration, mingling and homing of North-East Arctic cod from two separated spawning grounds
Conference object
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http://hdl.handle.net/11250/107511Utgivelsesdato
1984Metadata
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- Symposium proceedings [168]
Sammendrag
Migration of mature North-east Arctic cod tagged in 1975 and
1979-81 on two different spawning areas were studied. The
numbers tagged were 11,500 in Lofoten and 3,350 off More, of
which 1,088 and 476 recaptures are reported respectively.
During the feeding periods in the Barents Sea and the Bear
Island - Spitsbergen area mature cod from the two spawning
areas intermingle, although the M0re cod have a more westernly
and southernly distribution than cod from Lofoten.
Returnc from the experiments clearly indicate homing to the
spawning area where tagging occured. Whether this is homing in
the strict sense of the word, i.e. return to birth area, can
not be answered from these tagging results. The results show
that cod spawning off More and in Lofoten do not randomly
interbreed during repeated spawnings, and a possible division
into separate spawning populations is discussed.
Beskrivelse
The proceedings of the Soviet-Norwegian symposium on: Reproduction and recruitment of Arctic cod. Leningrad 26 - 30 September 1983.
Serie
PINRO-IMR Symposium1