c .~.1977/~:1
Administrative Report
International Council for the
Exploration of the Sea
DEMERsAL FISH
(NORTHERN) COMMITTEE
by
R. Jones
Belgium
(R. de ~lerck)
The determination of the density per year class of soles, plaice, dab,
flounder and gadoids along the Belgian coast has been continued on the
RV "Hinders'I
.
Two cruises were carried out for the demersal young fish survey in
collaboration with the Netherlands and Germany.
The market sampling was continued covering cod (~orthsea), whiting (North
sea), haddock (~orthsea), plaice (North Sea - m l i s h Channel Bristol
Channel Irish sea), sole (~orthSea English Channel -Bristol Channel m d
Irish sea)
-
-
-
No. of s a m p l e s
species
season
Sole
-
1
IV
2
research
vessel
-
-
3
4
-
1
VIlf
2
3
4
1
VIIa
2
VIId, e
1
-
Plaice
1
-
IV
2
-
3
4
VIIf
1
1
VIIa
VIId, e
2
-
1
-
,
market
sanlgles
No. of s a ~ i i p l e s
111easured
aged
7
717
210
12
1326
210
12
1447
210
I
1012
210
13
1036
210
5
5
428
210
553
140
9
373
210
4
512
210
9
1078
210
4
210
6
357
348
12
658
150
12
838
150
150
-
u
4 69
140
25
1582
250
5
31 4
150
3
192
-
-
4
228
150
,
fl
Number of samples
species
season
Cod
-
1
IV
2
3
4
research
vessel
samples
-
b
-
6
6
7
measured
aged
327
263
240
2 ti0
270
263
240
260
160
160
Canada
(P. P. ~ e t t )
Sampling data and research activities relative to demersal fish
have been reported to ICNAF.
Denmark
(H. hudsen)
The RV "Dana" took part in the Young Fish Survey in the North Sea in February
and in the International Young Gadoid Survey in June.