| dc.description.abstract | Investigations on Gonatus fabricii (gonatus) continued in 1979.
Material was collected during postlarval and 0-group fish surveys.
The distribution of gonatus was very similar to that found in
1978. During June-July, small gonatus were abundant in the northeastern
Norwegian Sea, maximum 4000 specimens in half hours' hauls
with a Harstad trawl, 18 x 18 m opening. Recordings with a Simrad
EK-120 echo sounder and integrator showed highest intensity in
the area of maximum catches. In June-July mantle lengths were
mostly 5-50 mm, maximum at 15-19 mm with average length 28 mm,
but a few larger individuals, up to 80-84 mm, were found. Preliminary
countings of growth rings in the statoliths indicated an age
of 30 days for gonatus with mantle length 15 mm, 45 days for
lengths of 25-35 mm, 65-75 days for lengths of 40 mm and 80 days
for 50 mm. The results are given with reservation. Stomach contents
were dominated by amphipods, copepods and chaetognaths. Other
organisms identified were euphausiids, pteropods, mussel larvae,
fry of Sebastes and tentacles of gonatus. | en |
