| dc.description.abstract | 1. During the autumn of 1960 the distribution of
the 0- and I-groups of herring was investigated
along the coast of Northern Norway, in the northeastern
part of the Norwegian Sea, and in the Barents Sea.
At the beginning of October the 0-group was
numerous just outside the entrance of the fjords
in the Røst-Torsvåg area. Off the northernmost
district, Finnmark, the herring were a mixture of
the 0- and I-groups, which were also observed
around Bear Island and in the Barents Sea, especially
in the eastern and southeastern part of the sea.
During the second half of October schools, mainly
of the 0-group, which were located near the coast,
migrated into the fjords and became available to
the fishing fleet.
2. The temperature was high just outside the
entrances of the fjords, decreasing inwards. During
the immigration the herring thus moved towards
lower temperature.
During the winter 1960-61 the herring stayed
in the fjords, being found in areas with low temperatures,
except in some fjords in Troms ( e. g.
Ullsfjord), where the herring were found in a
warm, intermediate layer. During the spring the
herring left the fjords, earlier in Troms than in
Finnmark.
3. In seven localities (Table 1) a total of 7800
herring (6800 of the 0-group and 1000 of the
I-group) was tagged with internal steel tags. No
recaptures have been reported from the taggings in
the Barents Sea (Sørdjupet and Skolpenbank NW)
and off Bear Island.
The recaptures from taggings in the Ullsfjord-Lyngenfjord
and Varangerfjord areas were all taken
near the tagging localities, the fishing mortalities
of the tagged herring being 20.6 % and 15.5 %
respectively. | en_US |
