--~
--
-
-- -
--------1
O/t)
International Council for
the Exploration of the Sea
C.M. 1986{G: 1
Report of Activities
lJEMER5AL FISH COMMITTEE
by
B. Vaske
1985
(R. Oe Clerck)
Recording of densities and growth rates of the 1984 and 1985 ycar
classes of sole, plaice, dab,
flounder,
cod allu whitin'] W,lS
carricd out.
Two
cruises
were also undertaken for the international demersal
young fish survey.
A
programme was initiateu in order to
~stjmate
the stock size of
adult flatfish in the Southern North Sea by means of a groundfish
survey in August.
The markct sampling was C"ontinued c(>""ring cod (North Seal,
whiting (North Seal, haddock (North Seal, plaice and sole (North
Sea, English Channel, Celtic Sea and Irish Seal.
-
2 -
1985
Species
Season
Area
No of samples
Market
Measured
Aged
210
10
1053
2
12
1146
210
3
11
1183
203
4
12
1238
209
Sole
IV
No of samples
Research
11
1046
200
2
6
573
210
3
5
418
120
70
70
2
6
561
210
3
2
140
140
70
70
VII f, g
4
VII a
4
VII d. e
1
3
210
200
2
3
210
210
3
3
217
130
4
3
210
210
10
598
130
2
12
682
140
3
12
4
12
Plaice
IV
897
715
252
140
50
50
2
50
50
3
50
50
VII f. g
4
1
40
40
2
6
275
120
3
2
80
80
1
40
40
1
50
50
1
50
·50
3
50
50
4
50
50
VII a
4
VII d. e
2
,
I
I
j
~
- 3 -
No of samp1es
Species
No of samp1es
Season
Research
Area
Market
4
Cod
IV
Haddock
Aged
299
130
115
2
2
115
3
5
504
60
4
6
332
200
9
596
170
2
4
576
30
3
8
605
70
4
9
732
105
1-4
3
169
70
Whiting
IV
Measured
IV
~
(R. Wells)
Canada had no fisberies and no research activity in the lCES
area in 1985. Activities in the Northwest Atlantic in 1985 bave
been reported to NAFO.
-
Species:
'-
-
DENMARK
Cod
No of sampies
Area
Season
Type of
fish
Research
vessel
No of fish
Market
Measured
Aged
664
575
540
590
660
575
540
590
1
2
3
4
Mixed
"
144
172
48
44
Skagerrak
1
2
3
4
"
"
"
"
32
22
24
7
435
655
327
324
380
653
287
324
1
2
3
4
Mixed
Kattegat
34
30
36
27
564
429
473
405
562
428
395
405
1
2
3
4
Mixed
2
5
6
10
192
130
176
267
192
130
175
266
1
2
3
4
Mixed
18
17
25
25
1306
1128
1307
2127
1304
1126
1296
2125
North
Sea
The
Belt
Sea
Baltic
"
"
"
"
"
"
"
"
"
"
"
Examined
racially
,
Species:
Plaice
No of sampIes
Area
Season
North
Sea
Type of
fish
1
2
3
4
Mixed
1
2
Mixed
I
Research
vessel
144
172
48
44
"
"
"
32
22
24
7
"
Skagerrak
3
4
"
1
2
3
4
Mixed
Kattegat
"
34
30
36
27
1
2
3
4
Mixed
18
"
17
Baltic
Species:
"
"
"
25
25
"
"
No of sampIes
Area
Type cf
fish
Mixed
Kattegat
1
2
3
4
1
2
3
4
Mixed
1
2
3
4
Mixed
Baltic
MeaS"Jredl Aged
I
i
I
1434
1295
1212
1216
1403
1265
1200
·1209
818
786
698
764
775
748
660
717
1354
1566
1466
1540
1325
1540
1405
1494
163
24
121
176
162
23
119
174
Examined
racially
I
Dah
Season
The
Belt
Sea
No of fish
Market
"
"
"
"
"
"
"
"
"
Research
vessel
No of fish
Aged
Market
Measured
34
30
36
27
194
0
227
225
193
0
226
.222
2
5
6
10
0
185
0
0
0
183
0
0
18
17
25
25
143
294
94
214
142
291
90
213
Examined
racial1v
_ 6 Species:
Whitinq
No of sampIes
Season
1
2
3
4
Mixed
North
Sea
114
172
48
44
131
39
122
635
130
39
118
·630
1
2
3
4
Mixed
Skagerrak
.
32
22
24
7
772
208
16
1
772
208
11
0
1
2
3
4
Mixed
Kattegat
34
30
36
27
662
17
15
168
661
17
14
168
Species:
Type of
fish
No of fish
Area
Market
..
.
..
.
.
.
.
..
!
Measured
Aged
Examined
racially
Saithe
Area
Season
Type of
fish
1
2
3
4
Mixed
North
Sea
1
2
3
4
Mixed
Skagerrak
Research
vesse1
.
.
.
.
.
.
No of sampIes
Market
Research
vesse1
No of fish
Measured
Aged
144
172
48
44
393
382
400
0
381
378
364
0
32
22
24
7
3
0
0
0
1
0
0
0
Examined
racially
- 7 Species:
Baddock
No of sampies
Area
Season
Type of
fish
...
North
Sea
1
2
3
4
Mixed
1
2
3
4
Mixed
Skagerrak
1
2
3
4
Mixed
Kattegat
Species:
Area
North
Sea
Skagerrak
Kattegat
Season
Research
vessel
..
.
"
n
n
"
n
Market
No of fish
Measured
Aged
144
172
48
44
450
311
303
436
445
309
302
.418
32
22
24
7
533
425
290
305
529
422
267
300
34
30
36
27
4
1
1
0
4
1
1
0
Examined
raciallv
Sole
Type of
fish
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
"n
"
n
n
n
"
"
"
No of sampies
Market
Research
vessel
No of fish
Measured
Aged
144
172
48
44
0
0
257
0
0
0
255
0
32
22
24
7
0
0
0
0
0
0
0
0
34
30
36
27
159
222
265
299
158
217
262
294
Examined
racially
- 8 -
Species: Sandee1
Area
Season
Type of
fish
1
2
3
4
Mixed
North
Sea
..
..
.
1
2
3
4
Skager
rak
No of sampies
Market
Research
vesse1
Species:
Mixed
.
.
.
North
Sea
Skagerrak
Season
1793
14575
1662
0
1793
14575
1662
0
32
22
24
7
0
448
0
0
0
448
0
0
Examined
racially
I
Norway Pout
Type of
fish
1
2
3
4
Mixed
1
Mixed
2
3
4
Aged
144
172
48
44
No of sampies
Area
No of fish
Measured
Research
vessel
..
..
.
.
.
.
Market
No of fish
Measured
Aged
144
172
48
44
6970
1183
913
2135
6970
1183
912
. 2135
32
22
24
7
1025
393
68
0
1025
393
68
0
Examined
racially
FINLAND
(v.
Sjöblem and E. Are)
No work was carried out on demersal fishes other than that
reported to the Baltic Fish Committee.
-
Q
-
FRANCE
(A. Souplec.)
1. CAMPAGNEB
au
23
SCIENTIFIQL~~
A Lk HER
Le N/O "THALA53 n a p---:icioe
du 2- janvie:fevrier 1985. au P!'Ogr-a.i1üt: lr.-:~rnü-:io;-Iä:" Young
Survey. 11 a etE effe~LuE .- 5ca~ion5 dans la
Fish
division IV A, 42 en IV B et
~:
en IV C.
Le programme oe suiv: des re5source5 du Golfe
de Gascogne (divisions VIII A-Bl a etE poursuivi ä bord
du
N/O
"PELAGlA"
avec les
Carr,pagnes
t.rimestrielles
RESGAS
29 stations ont ecE e~antillonnees au
trimestre, 27 au 2eme, 26 au 3eme et 37 au 4eme.
,er
11. MENSURATIONS ET AGEAGE
Les operations d'ecnan~iclonnage a terre e
la mer sont resume~dans les tö~leaux J01nts.
a
- 10 REPORT OF ACTIVITY - FRANCE - 1985
NB. OF SAMPLES
SPECIES
SAITHE
AREA
SEASON RESEARCH
VESSEL
IV A
1 st
2nd
3rd
4th
Q
Q
Q
1 st
2nd
3rd
4th
Q
VI A
COD
IV A
IV B
IV C
VI A
VII A
8
Q
Q
Q
Q
16
NB. OF FISH
MARKET
SAMPLES
MESURED
116
+
+
+
+
1389
2142
1779
1742
313
433
331
347
+
132
140
+
+
+
+
+
+
472
+
+
+
Q
Q
1st
2nd
3rd
4th
Q
1st
2nd
3rd
4th
Q
Q
Q
+
+
Q
+
+
1st
2nd
3rd
4th
Q
+
+
+
+
269
815
719
775
1 st
2nd
3rd
4th
Q
Q
Q
32
OTHER
+
+
+
+
1st
2nd
3rd
4th
Q
AGED
140
252
241
+
636
624
Q
+
Q
+
+
Q
+
+
+
+
+
300
139
+
+
Q
Q
Q
26
Q
2
2
3
3
299
377
405
435
VII FG 1st Q
2nd Q
3rd Q
4th Q
6
7
3
3
642
1087
443
372
Q
217
235
97
128
_ 11 -
REPORT OF ACTIVITY - FRANCE - 1985
NB. OF SAMPLES
SPEcns
HADDOCK
AREA
1st
2nd
3rd
4th
Q
Q
Q
Q
17
1st
2nd
3rd
4th
Q
Q
Q
Q
30
IV C
1st
Q
7
VI A
1st
2nd
3rd
4th
Q
Q
Q
Q
IV A
I
I
SEASON RESEARCH
VESSEL
IV B
NB. OF FISH
MARKET
SAMPLES
MESURED
OTHER
AGED
I
I
947
234
534
+
+
+
+
3059
+
+
+
+
1317
419
+
+
+
+
+
+
+
+
I
,
I
!
i
I
WHITlNG
IV A
1st Q
2nd Q
3rd Q
4th Q
17
1st
2nd
3rd
4th
Q
Q
Q
Q
30
1st
2nd
3rd
4th
Q
Q
Q
Q
26
1st
2nd
3rd
4th
Q
Q
Q
II
10
+
+
+
+
1027
1323
1347
1597
+
+
+
+
1167
+
+
+
458
385
407
48
+
+
+
+
3826
998
+
+
+
+
+
+
+
+
+
+
2809
461
+
+
+
+
+
+
\
I
!
:
1
\
IV B
IV C
I
I
I
!
I
I
VII A
VII D
1st
2nd
3rd
4th
2
2
3
2
Q
Q
Q
Q
Q
VII FG 1st
2nd
3rd
4th
Q
Q
VII not 1st
alloca- 2nd
ted
3rd
4th
Q
Q
+
+
+
+
4
6
2
2
Q
Q
Q
Q
+
+
+
+
523
531
i
I
722
457
+
+
+
+
187
302
125
1021
1584
568
435
259
283
252
147
600
1120
1120
240
I,
+
I
- 12 -
REPORT OF ACTIVITY - FRANCE - 1985
NB. OF SAMPLES
SPECnS
HAKE
NORWAY FOUT
MONKS
(various)
AREA
SEASON RESEARCH
VESSEL
VI A
1 st
2nd
3rd
4th
VII
VIII
IV A
NB. OF FISH
MARKET
SAMPLES
MESURED
Q
Q
Q
Q
15
22
382
728
1 st
2nd
3rd
4th
Q
Q
Q
Q
13
20
19
30
448
611
661
1005
1st
2nd
3rd
4th
Q
Q
Q
Q
25
29
25
36
72
54
47
71
6390
6431
5961
166
442
275
594
1 st Q
16
666
113
57.oi2
VII EF 1 st
2nd
3rd
4th
Q
Q
Q
Q
+
+
+
+
463
450
704
640
VII AG 1st
2nd
3rd
4th
Q
Q
Q
Q
+
+
+
+
491
933
2296
2124
VII H+ 1 st
VIII A2 2nd
3rd
4th
Q
Q
Q
Q
+
+
+
+
1561
3433
2940
2261
VII not 1st Q
alloca- 2nd Q
ted
3rd Q
4th Q
15
18
12
28
331
404
330
760
+
3262
5114
4550
3864
VIII
1st
2nd
3rd
4th
Q
Q
Q
Q
23
22
19
29
+
+
+
AGED
OTHER
BB
87
41
- 13 -
REPORT OF ACTIVITY - FRANCE - 1985
NB. OF SAMPLES
SPECIES
SOLE
PLAICE
AREA
SEASON RESEARCH
VESSEL
VII D
1 st
2nd
3rd
4th
Q
Q
Q
Q
VII E
1 st
2nd
3rd
4th
Q
Q
Q
Q
VIII
1 st
2nd
3rd
4th
Q
Q
Q
Q
VII D
1st
2nd
3rd
Q
Q
Q
VII E
1 st
Q
LEMON SOLE
MARKET
SAHPLES
24
24
18
29
4
3
3
269
79
257
44
42
43
33
3023
2658
2801
2501
AGED
87
82
182
289
478
196
42
210
856
1525
252
+
+
+
2
+
+
+
+
MESURED
5291
4398
4247
1138
+
+
+
+
VII
1 st Q
(ether) 2nd Q
3rd Q
4th Q
DAB
NB. OF FISH
228
300
600
200
50
IV A
1 st Q
+
534
268
IV B
1 st Q
+
15340
1709
IV C
1st Q
+
4917
731
VII D
1st Q
2nd Q
3rd Q
4th Q
+
+
+
+
1002
1416
808
538
434
488
97
364
VII
1 st Q
(ether) 2nd Q
3rd Q
4th Q
+
+
+
500
1000
1500
240
VII BC- 1st Q
GK 2nd Q
3rd Q
4th Q
+
+
+
+
+
300
600
600
200
OTHER
- 14 _
REPORT OF ACTIVITY - FRANCE - 1985
NB. OF SAHPLES
SPECIES
MEGRIM
AREA
SEASON RESEARCH
VESSEL
HARKET
SAMPLES
MESURED
VII EF 1st
2nd
3rd
4th
Q
Q
Q
Q
1
325
2
1
485
325
VII AG 1st
2nd
3rd
4th
Q
Q
Q
Q
9
8
6
5
1485
1475
1300
1135
VII H+ 1st
VIII A2 2nd
3rd
4th
Q
Q
Q
Q
19
11
4
8
3755
2745
980
1475
+
+
+
+
VII not 1st Q
a11oca- 2nd Q
ted
3rd Q
4th Q
CONGER EEL
NB. OF FISH
VIII
1st
2nd
3rd
4th
Q
Q
Q
Q
SKATE (Raja VII not 1st Q
naevus)
alloca- 2nd Q
ted
3rd Q
4th Q
7
26
6
14
AGED
300
1600
3200
1000
348
1278
136
219
+
+
+
+
800
800
800
800
100
100
100
OTHER
- 15 -
German Democratic Republic
(B. Vaske)
Specie/Area
Redfiah
(S. mentella)
IIa
XII
:nVa
Greenland halibut
II
II
I
II
II
III
III
17
1
5304
4647
70
8632
3141
31
784
645
50
1292
335
31
11
1492
489
32
35
60
1
- 16 -
FEDERAL REPUBLIC OF GERMANY
(G. Rauck)
The biological sampling programme of demersal species on board research
vessels, commercial trawlers and on fish markets has been continued.
This sampling scheme, including length frequency measurements, otolith
samplings, single weights of fish, tagging of fish, stomach sampling,
as weIl as studies on fish density and distribution of demersal fish
species were carried out during ground fish surveys.
The monthly bycatch analysis of the shrimp fishery as weIl as joint
investigations in the Wadden Sea area of Niedersachsen and SehleswigHolstein have been eontinued in spring and autumn together with vessels
from the Netherlands and Belgium.
Investigations on eod discards in the commereial fisheries and cod selectivity studies using mesh sizes of 90 and 100 mm mesh openings were
earried out in the German Bight.
The eod sampling scheme off Greenland has been intensified aiming at
a stock separation by means of different otolith struetures.
A North Sea groundfish survey with special emphasis on the gadoid and
pelagie speeies covering the area IVa and b has been repeated.
Cruises of research vessels and eommercial factory ships re lated to the
national sampling scheme of the'demersal speeies were as folIows:
Months
ICES area
Objectives
R.V. "Walter Herwig ll
Sept.!Nov.
XIV
Groundfish survey
R.V. "Anton Dohrn"
January
Febr,fMareh
April/May
IVb
IVabe
VI VII VIII
Groundfish survey
IYFS
July/Aug.
Sept.
Groundfish survey
IVabe
IVa Yla Vllb Vllg-k Pelagie fish survey
Pelagic ftsh survey
,
- 17 -
Months
ICES ares
Objectives
IVb
IVbc
IVb
IVb
IVb
IVb
IVb
IVb
2 Groundfish surveys
Groundfish survey
Sole beamtra"l survey
Groundfish survey
XIV
IIb
IIb
Redfish,cod fishery
Groundfish fishery
R. V. "Solea"
January
Febr./March
June
June/July
August
Sept./Oct.
Nov.
Dec.
"
Commercial vessels
Febr.-May
June/July
Aug'/Sept.
"
..
Research Vcs.cl Sal1lple.
~larket
No. u( Flsh
Species
Arp.ft
~
Sea80D
I
I!+III
I
II!
IVb
I
I!
I!I
IV
I
IVc
'~la
I
I!
II!
Ib
I
-lIb
I!
II!
IIe
I!
VIIf
II
VIIg-k
I!
VIIh
Irr
~IVb
I
No. or fteh
o. of
Samples
IIa
IIb
IVa
Aged
t.(ensurp.cJ
52
60
203
37
142
26
8
1
16
37
6
10
1
1.076
675
9.277
314
6.839
7.248
25
1
45
188
37
52
2
1
2
9
8
1
5
32
20
103
1.940
703
674
749
-
Ilacial
Inv.6Ugotlonn
No, or
Sal1lple9
Men9ured
2
51*
613
11.847*
2*
1. 241*
3*
1.417*
117
-
I
I
,....
I
1.940
4.974
1.900
* SampIe, of eomn reial ca ehes taken at sea
I
310
25
18
2
I!
IV
Aged
2.195
19*
I
Snmplee
,
I
;
1.722
8.472*
731
1.161
590*
367
Research Vc •• el :)alUple.
Market Samplee
No. of Fllh
Speci e8 88a8oB ~o. of
,\rp.8
:JalUple8
No. Of FI8h
I,lealured
Aged
Radal
Inv" 8ti llotlonn
No. of
SalUple8
Meßlured
Aged
~,
IIa
IIb
IVa
IVb
VIa
VIb
VIIb
IvIIf
WIIg-k
I
II+III
I
III
IV
I
II
III
I
II
III
I
II
II
III
II
II
III
61
63
11.177
9.064
507
493
104
36
86
2
28
52
7
3
19
1
1
5
6
5.523
380
8.022
236
6.508
10.869
2.542
694
422
81
3
18
168
450
* SampIe of eOIDlJ reial ea ehes taken at
:
I
;
1
7*
207
2.129*
2
1
1.160
457
163
550
169
347.
I
...
""
I
~ea
,
Re.earch Vc .. el SampleR
Market Samplee
Nf). or Floh
Spoc.i oe
J\rf!ß
S8eoon No. or
Samplee
~'
Va
I
IU
I
IU
Vb
Vb - IVc
Vc
VIa
I
P
U
IU
U
UI
U
U
U
UI
U
VUb
~Ue
WUf
kiUg-h
IU
~
I,(eaoured
53
54
95
144
47
3g
4.083
1.400
5.412
8.033
2.585
24
49
2.960
4.640
238
215
169
273
192
95
7
Aged
Racial
I nvp.o ti 11o tionn
No. or
Sampleo
Meaoured
Fhh
Aged
228
226
225
208
I.m
11
1
4
3
7
6
2
I
No. or
J
I
ro
0
I
:
Research V"se.,l S8IUple8
Spec1 e8
No. of Fleh
Seaaon ~o. of
~'
IIa
I
II
III
I
IVa
No. Of Fieh
Id.,aeur.,d
::i8lUplee
Are"
Marke t Samp1e8
Aged
1
1.634
169
1
2.204
696
1
124
124
Racl81
Inve8tig_
aHoßn
Ir
III
IV
III
I
I
IVb
Vb
VIa
I
III
!
I
1
408
1
139
!
:
10
,
lJea9ured
Aged
5
2
1
1.987
772
2.986
1.015
399
283
3
10
9
7
1.313
3.698
3.771
2.498
694
1.943
1.316
1.022
1
408
211
I\J
2
415
762
I
I
~
IV
No. of
SSlUple9
!
...,
Research Ve.sel SompleR
Species
,\rell
Market Sftmples
No. or Flsh
Seuon ~o •• r
Ssmples
No. or Fieh
Aged
MeosurecJ
Racisl
Inv"stigotlonn
No. or
SBmples
Meaftured
Aged
piaice '
IVb
I
147
116
237
39
8
5.672
12.529
24.173
4.196
328
2
8
I
II
III
IV
12
2
69
343
107
2.492
1
I
II
III
IV
133
58
173
35
11. 742
8.683
27,773
7.153
39
257
76
719
II
III
IV
I
IVc
3
8
2.001
6.364
2.060
6.538
783
656
478
530
94
418
660
210
93
218
391
210
Sole
IVb
I
7
4
1
839
~
IVb
F10under
Vb
I
II
III
IV
:
!
I
;
,
'"rv
I
-,
!
Re.earch Vc.sel Seml'leR
Me rke t Samp Je 0
No. or Fl.h
Specho 5ee.oD: ~o. of
Arp.ft
Sampies
No. or Floh
Aged
Uessured
Raclal
Inv... tlltatlonn
No. of
Sampies
l.leasured
Aged
,
.'D!!:.!?2!.
IVb
U
10
279
267
3
275
275
~
S. marinus
Ua
I
U
IU
I
U
IV
Ub
XIV
S. mente11
Ia
Ib
Wb
149
I
IU
I
U
U
II!
IV
IV
17.982
137
24.695
:co SampIes pi conune eial cat hes taken
!
!
1.263
:
338
at
ea.
,
1
5
24*
15*
2
6*
4
33*
9
2
3
9
562
1.981
5.860
6.430
937
1.899
1.575
7.886
2.334
777
1.664
5.172
200
361
346
379
211
16
259
433
413
304
200
581
I
'"w
I
Re.e arch V..... el Salllp 18.
~pedes
Nt).
SeeSOD ~o. ot
ot Flsh
No.
Id ... asured
~amp18s
,\re"
Market SampIes
Aged
Raclal
1nv .. s ti llQ
No. of
Samp18.
Mea.ure,l
Of Flsh
Aged
tionn
,
Blue Ling
IVa
Vb
Vb-VIa
VIa
XIV
I
I
II
IV
Ir-IrI
I
II
III
III-IV
IV
Ilor...ay
~
IVa
~
391
889
211
1.168
239
498
123
621
1
252
497
1.374
141
270
611
288
2
6
228
1
42
54
19
18
!
I
N
228
3
I
III
I
IIr
IVb
288
1
2
4
1
5
691
374
"'
I
4.260
6.033
847
990
!
;
j
,
Research VeRsel Sample.
Market Samples
No. or Flsb
SV ecies
Sea80D
,\re"
No. or
Sampl.s
No.
Aged
Mes!lurec.1
Rad a 1
Inv~.t1g-
No. or
Sampl.s
or
Fieb
MeRsured
Aged
ationn
G~en~dier
Macrourus
berglax
XIV
IV
34
566
566
Coryphaenoide.
rupestris
I
I\)
XIV
IV
2
58
58
III
16
214
214
~,
I
Greenland
Halibut
V+XIV
!
!
!
:
9
804
.
- 26 -
Iceland
(S .A. Schopka)
The research work carried out on demersal fish was to
a great extent following the same lines as in previous
years i.e. based on market samples and research vessel
data.
The groundfish survey which has been carried out by
research vessels was reorganized and extended from 200 to
600 stations. This survey was made in three weeks
simultaniously on board of five Japanese build stern
trawlers of same type.
In August the research vessel "Dröfn" was engaged in
fishing experiments on demersal fish in the Skjoldenfjorden
area at East Greenland.
tagged.
During this survey some cod were
Fishery inspectors cOllected considerable amount of
data on demersal fish, especially cod on board of comrnercial
vessels.
The num~er of fish sampled is shown in the following
tables:
Sampling data for ("od 1985
Area
Season
No of samples
Research
vessels
Va
Jan.-March
Apr.-June
July-Sept
No of fish
Market
samples
1112
132256
7603
10991
2524
62
39262
18481
182
189
114
1597
XIV
July-Sept.
5
"qed~'Jed
70
10
Oct.-Dec.
Heasurcd
29829
658
17089
1381
1783
1667
480
1180
24
1964
1313
166
250530
17931
99
63
- 27 -
Sampling data for saithe 1985
Area
No of sampies
Season
Research
vessels
Va
Jan.-March
14
July-Sept.
12
Measured
aged
2481
1269
12
1342
2154
605
200
13
1683
472
277
377
Apr.-June
Oct.-Dec.
No of fish
Market
sampies
752
12
3
406
tagged
5
554
295
30
8978
3118
Sampling data for haddock 1985
Area
Season
No of sampies
Research
Vessels
Va
Jan.-~larch
No of fish
Market
sampies
630
20
Apr.-June
28
16
July-Sept.
20
38
716
aged
41957
2299
2224
942
3403
298
1841
700
696
2
Oct.-Dec.
Measured
197
100
1356
12
1173
600
50
52847
4939
tagged
- 28 Whiting 1985
Area
Season
No of samp1es
Research
vesse1s
Va
Jan.-Mar.
Market
sarnp1es
No of fish
Measured
75
1433
Ju1.-Sep.
2
44
Oct.-Dec.
5
25
82
1502
Aged
5
Apr.-Jun.
5
Roundnose grenadier 1985
Area
Season
No of samp1es
Research
vesse1s
Va
Jan.Mar.
Market
sarnp1es
No of fish
Measured
.;>.ged
30
3344
595
Jul.-Sep.
13
2828
365
Oct.-Dec.
3
47
46
6219
Apr.-Jun.
960
Roughhead grenadier 1985
Area
Seilson
No of sampies
Research
vessels
Va
Jan.-Mar.
Market
sampies
No of fish
Measured
7
232
9
26
16
258
Apr.-Jun.
Jul.-Sep.
Oct.-Dec.
Aged
- 29 -
Sampling da ta for redfish 1985
S. marinus
Area
Season
No of sampIes
Research
vessels
Va
Jan-March
562
9
14
Apr.-June
July-Sept.
30
Okt.-Dec.
20
Sub. Total
No of fish
Market
sampIes
612
Measured
Aged
63828
2
1502
423
2719
394
Taoged
2691
12
3402
331
9
1517
2521
254
44
78180
1404
S. mentella
Area
Va
Season
Jan.-March
No of sampIes
Research
Market
vessels
sampIes
Okt.-Dec.
Sub. Total
Aged
4510
100
1038
1568
167
272
2
1321
490
155
4
719
316
280
18
9962
974
10
4
94
~Ieasured
5
7
80
Apr.-June
July-Sept.
No of fish
Tagged
S. viviparus
Area
Season
Research
vessels
Va
Jan.-March
Jul.-Sept.
Okt.-Dec.
No of fish
No of sampIes
Market
sampIes
221
8
Measured
Aged
8362
492
1567
11
13
Sub. Total
Grand Total
240
946
1
63
10434
98576
2378
Tagged
- 30 -
Sampling data for Catfish (Anarhichas lupus) 1985
517
2
19.273
2.047
377
Blue ling 1985
Area
SE'ason
No of samples
Research
vesse1s
Va
No of fish
Market
samples
Measured
80
1350
Jul.-Sept.
16
144
Oct.-DE'c.
10
Jan.-March
Aged
655
Apr.-June
1
106
1
100
100
418
168
2012
923
- 31 Silver smelt 1985
Area
Season
No of sampIes
Research
vessels
Va
Jan.-Mar.
No of fish
Market
sampIes
Measured
Aged
89
4.538
592
Apr.-Jun.
Jul.-Sept.
Oct.-Dec.
7
839
235
10
955
418
106
6.332
1. 245
Tusk 1985
Area
Season
No of sampIes
Research
vessels
Va
Jan.-mar.
No of fish
Market
sampIes
316
Measured
Aged
1575
957
556
200
3
Apr.-Jun.
Jul.-Sept.
14
31
Oct.-Dec
12
38
342
1
16
4
2200
1173
Ling 1985
Area
Season
No of fish
Research
vessels
Va
Jan.-Mar.
Market
samples
No of fish
Measured
129
368
3
4
133
375
Aged
238
Apr.-Jun.
Jul.-Sep.
Oct.-Dec.
3
238
- 32 -
Samplin~
data for Greenland halibut
(Reinhardtius hippoglossoides) 1985
Area
Va
Season
Jan.-March
Va
Apr.-June
Va
July-Sept.
XIV
Total
16
No of Fish
Measured
1.178
799
674
30
2.638
1.100
5
917
200
4
370
200
55
7.521
3.112
3
Okt.-Des.
17
Aged
2.418
14
Va
Va
No of samples
Res. vess.
Market S.
139
- 33 -
Sampling da ta for plaice 1986
(Pleuronectes platessa)
Area
Season
No of samples
Res.vess.
Va
Va
No of fish
Market s.
Jan.-Mar.
Measured
8
Aged
861
216
654
5.1610
602
15
109
Apr.-Jun.
2
128
3.690
128
Va
Jul.-Sep.
17
3.022
544
Va
Okt.-Dec.
6
1.433
509
33
10.719
1.999
Total
G69
Tagged
3.690
lRELAND
(R.
Grainger)
Port sampling continued for commercial catches of cod, whiting
and haddock in Divisions VIa and VIIb. cod and haddock in
Diviaion.VIb and cod, whiting and plaice in Division VIIa.
Whitlng discards from Div. VIIa Nephrops fishery were also
sampled.
A beam trawl survey ror juvenile plaice in shallow water off
the east coaet of Ireland was carried out in ~ and September.
Groundfish eurveys in the Irieh Sea aimed at Beeessing prerecruit whiting and cod were started in 1984 and were carried
out in the northweet Irieh Sea in June and September.
SpecIes IDIvIsIon
Cod
totale
VIa
I
Quarter IRo. of [ No. of ]i8b
samples lIIeaeureCI aged
1
2
3
4
VIIa
1
2
3
4
YUb
1-4
12
11
9
12
896
343
538
773
327
19
11
1)
1145
1351
1565
1155
462
458
394
232
,1f
snA
j~AE
1)
415
164
258
- 34 -
Speeies
Haddock
VIa
1
2
3
4
10
11
12
8
1804
1733
1151
672
233
295
326
300
VIb
2
1
265
95
VIlb
1-4
10
52
6359
Totßla
734 .
380
1629
Spec1es
Whiting
Whiting
discards
Totals
VIa
1
2
3
4
11
5
4
4
1914
1276
1238
871
2b6
130
131
VIla
1
2
3
4
7
7
17
10
1443
1131
2970
2368
125
210
264
238
VIlb·
1-4
11
2914
421
VIla
1
2
3
4
8
2
2
115
0
16
402
146
636
521
104
17880
2201
203
0
98
~--------------
-
--------
- 35 -
No. of fieb
mea ure
e
Plaice
VIIa
1
2
3
4
Totals
7
5
27
16
861
947
4150
2076
136
206
202
207
55
8034
751
,
Grundfisb Survels
Whiting
Cod
Plaice
No. of Station
a ed
84
11932
202
1707
90
196
66211
415
3921
26
196
63
211
26
Beam Trawl SurveI for Plaice
September
~
No. of bauls
Age group
Nos. caugbt
41
1
705
41
1
0
704
219
- 36 -
NETHERLANDS
(F.A. van Beekl
In 19i15 the market sampling of the Duteh landings was eontinued for the
following speeies: brill, eod, haddoek, plaiee, sole, turbot and
whiting. For roundfish, brill and turbot the market sampling was
stratified on an area basis (figure 2 in Administrative Report of 1982).
For the other flatfish speeies the stratifieation was based on the
landings per fishing harbour.
In February R.V. "Tridenq" and R.V. "Isis" participated in the
International Young Fish Surveys (IYFS). These surveys are earried out
yearly sinre 1960 and estimate the relative abundanre of 1 and 2 year
old herring and roundfish.
In January/February R.V. ttTridens u and R.V. IIIsis" carried out a bt=am
trawl survey on the spawning grounds of plaire in order to investigate
the stage of maturity in relation to the distribution, age and length of
the fish.
lu the period February/May 5 larval surveys were carried out with a
"anc hored net U in the Waddensea by R.V. "Stern". These surveys measure
the number of herring- and plaice larvea in the Waddensea.
In April/Hay and September/Oetober lJemersal Young Fish Surveys (DYFS)
were ("arried out with a bearn tra..,;rl and a shrimp tra\<.'! 1:1 the continental
nurseries by R.V. t1Trid~ns". R.V. "Stern", R.V. "Schollevaar n and R.V.
"Isis" '.n eollaboratlon with Belgium and the Federal Republic of
Germany. These surveys are directed on brouwn shrimps and 0-, 1- anJ
2-grüup prereeruits of pI ai re and sole.
In the period April/June 3 additional sole egg surveys were earried out
by R.V. "Isis" in the Southern North Sea in order to cover the misstng
areas of the International 1984 Sole Egg Surveys.
In Hay R.V. "Tridens" carried out a survey in the Central and Southern
North Sea direeted on Q-group cod. In this surve y also the standard
pelagie O-group trawl was eompared with a GOV trawl with a narrow
meshed eod end.
In June R.V. "lsis" carried out 2 tagging surveys on plaice in the
Southern North Sea. Plaiee of different length groups were tagged with a
chemical tag (tetracycline) and a "traditional" Peterson tag.
In August a be am trawl survey was earried out in the Central and
Southern North Sea by R.V. "Isis" and the charter "KW 34" in order to
investigate the distribution snd abündanee of plaiee and sole in these
areas.
In October/November R.V. "Tridens" and R.V. "Isis" earried out a survey
in the southern Norht Sea with the GOV trawl direeted to roundfish. This
survey is held stnee 1980 (Dutch Groundfish Survey)
- 37 SAMPLING DATA FOR
BrUl
1985
number of 11sh sampled
fish market
AREA
PERlOD
------------
--------1st
2nd
3rd
4th
North Sea
SAMPLING DATA FOR
measured
-----------
1089
1220
904
347
quarter
quarter
quarter
quarter
turbot
research vessel
----------------------- ----------------aged
340
590
202
360
aged
----------------61
14
28
15
1985
number of f1sh sampled
fish market
AREA
-------- --------North Sea
---------Wadden Sea
Estuary
SA~PLING
research vessel
PERlOD
1st
2nd
3rd
4th
DATA FOR
1417
1705
1515
552
quarter
quarter
quarter
quarter
-------1st
2nd
3rd
4th
measured
----------
quarter
----------
aged
aged
315
611
257
316
46
36
132
7~
quarter
quarter
quarter
dab
1985
Durnber
of fiso sampled
-----------------------11sh market
AREA
PERlOD
research vessel
----------------- -----------measured
aged
aged
- - - - - - - - - - - - - - ----- ---------------------- -1st
quarter
North Sea
2nd quarter
3rd quarter
4th quarter
---------- -1st quarter
Wadden Sea
Estuary
2nd quarter
3rd quarter
4th quarter
-------- -------- Zeeland
Estuary
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
1053
611
1078
---- - - - - - - 64
110
----- --------25
- --
------- -
-- - - - - - -
-----------------
- 38 -
SAMPLING DATA fOR
plalce
1985
number of fish sampled
fish market
AREA
research vessel
FERIOD
----------------North Ses
---------Ist
2nd
3rd
4th
quarter
Guarter
quarter
quarter
---------------- ------------Wadden Sea
Estuary
Zeeland
Estuary
1st quarter
2nd quarter
measured
-----------------------------
aged
2865
1034
1439
1185
aged
----------------3214
1825
1347
1835
----------------318
3rd quarter
4th quarter
394
1st quarter
2nd quarter
92
3rd quarter
4th quarter
S~~PLING
DATA fOR
sole
111
1985
number of fish sampled
fish market
AREA
measured
North Sea
research vessel
FERlOD
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
aged
aged
1167
1999
985
956
392
330
484
1st quarter
Wadden Sea
Estuary
Zeeland
Estuary
2nd quarter
3rd quarter
4th quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
102
13
66
50
- 39 -
SAMPL1NG DATA FOR
cod
1985
AREA
1
Northern
North Se.a
------2
Central
North Sea
PERlOD
Ist
2nd
3rd
4th
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
number of fish sampled
fish market
-measured
--
4
Western
North Sea
5
South Western
North Sea
6
Southern
North Sea
7
Eastern
North Sea
1st
2nd
3rd
4th
1st
2nd
3rd
4th
research vessel
aged
----- -
aged
210
quarter
45
159
586
100
quarter
quarter
65
-
---------- - - - - - - - 3
North Western
North Sea
-
quarter
38
quarter
quarter
quarter
quarter
quarter
quarter
466
295
205
50
quarter
2nd quarter
3rd quarter
4th quarter
355
605
1093
33
50
150
194
8
1st
2nd
3rd
4th
2186
1346
635
483
300
100
100
90
176
143
419
50
71
-Ist
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
quarter
quarter
-
100
50
7
113
----
----
2
'.
quarter
quarter
quarter
56
- 40 -
SAHPLING DATA FOR
haddock
1985
number of fish sampled
---------------------fish market
AREA
PERIOD
---------I
-----
2nd quarter
North Sea
3rd quarter
4th quarter
-------------,- ----------Central
North Sea
aged
measured
-~-~:~:;-l-------
~orthern
2
research vessel
-------------------- ----------------aged
Ist quarter
2nd quarter
3rd quarter
-----._----------185
----------- ------ - - - - -108- - - - 351
76
4th quarter
---------3
~orth
~orth
Western
Sea
- - - - - - - - ........_-- ------------------------------Ist quarter
128
2nd quarter
3rd quarter
4th quarter
---------- - - - - - - - 4
Western
);orth Sea
Ist
2nd
3rd
4th
quarter
---------- ---..-------273
354
66
quarter
quarter
quarter
100
25
---------------------------- - - - - -----------5
Ist quarter
9
South \o.,'estern
Nürth Sea
2nd quarter
3rd quarter
4th quarter
76
296
Ist
2nd
3rd
4th
488
367
458
219
_._----- --------6
Southcrn
North Sea
quarter
quarter
quarter
quarter
---------Ist quarter
7
Eastern
North Sea
2nd quarter
3rd quarter
4th quarter
-
25
,-=100
75
75
25
---- --
83
86
126
-
- 41 -
SAMPLING DATA FOR
whiting
1985
number of flsh samp1ed
fish market
AREA
measured
1
Northern
North Sea
2
Central
North Sea
3
North Western
North Sea
4
Western
North Sea
5
South Western
North Sea
6
Southern
North Sea
7
Eastern
North Sea
research vessel
PERlOD
1st
2nd
3rd
4th
1st
2nd
3rd
4th
-
1st
2nd
3rd
4th
1st
2nd
3rd
4th
quarter
quarter
aged
-
--------- ---_.... -
aged
-
130
quarter
quarter
15
quarter
quarter
250
44
37
quarter
quarter
--
quarter
quarter
10
quarter
quarter
quarter
quarter
quarter
quarter
-1st quarter
80
141
316
77
42
50
68
-----
145
723
1096
93
50
100
72
2nd quarter
3rd quarter
4th quarter
SO
50
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
1885
1336
1098
862
150
100
150
150
114
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
41
HO
359
75
-
- 42 _
NORWAY
(0. M. Smedstad)
Subare8S T end 11
Tbe researcb activities at sea continued at tbe same level as in
~oung cod and baddock were investigated
during a combined acoustic and stratified bottom trawl survey in
tbe Barenta Sea in Februar-March. In May the distribution of young
cod and haddock was studied in the central Barents Sea. Similar
investigations were carried out in July-August in the Spitsbergen
area. In September-October tbe distribution and abundance of cod,
baddock, redrish, Greenland halibut and Blue wbiting were inveatigated in the Bear Island-West Spitsbergen area.
1984. Tbe distribution of
Inveetigations on distribution and drift ot cod egge were carried
out in March-April, and investigations on larvae and post-larvae
were carried out in May-July. In August-September tbe annual international O-group rish survey was carried out in the Berente Sea
end adjacent areas. The distribution ot spawning cod was studied
in Lofoten end ott ~re in Februar-March. Mature cod were tagged
in tbe main spawning localities in Lofoten.
During May the distribution ot O-group saithe were investigated
in tbe area Stad-Rjst. while tbe distribution and abundance ot older
saithe were investigated in tbe area Rjst-Troms in October-November.
- 43 -
Tbe distribution of silver smelt was studied along tbe Norwegian
coast during a survey in April. Tbe sampling of commercial
catcbes of cod, baddock and saitbe were continued at tbe same
level as last year.
Subarea IV
Tbe sampling of commercial landings from two fisberies were
continued and sampling of commercial saitbe catcbes were
improved. Tbe distribution and abundance of I- und II-group
gadoids were studied in February as part of tbe international
young fisb surveys. The distribution and abundance of O-group
gadoids were studied in July in tbe nortbern Nortb Sea. In
February and July tbe distribution and abundance of saitbe
were investigated in tbe nortbern Nortb Sea.
- 44 -
COD
I
RESEARCH VESSEL
1,lARKET
Ap'e
SPEeIES SEASOF
!t:easured
Ac:ea
t:easure
AR"EA
NO • Of ,INO.OfINO.Of j!'O.Of No.of IILO.OfINO.Of INO.Of
samDIes fisb samoIes fish samoIes ftsb samDIes fisb
f
I
IIA
IrB
IV A
IV B
1
2
3
4
1
2
3
4
47
2
100
1572
162
99
22
1
2
3
4
1
1
49
44
34
1864
1
2
3
4
15
n
-
6
1
28
4
2
J
4
V 3
1
2
3
IrA
Ir B
4
Tagged Fisb
1
1900
2
1299
3
1221
1651
381
302
76
162
25757
57F4
5575
144
26
65
22
15875
4162
2607
449
3
479
18
190
7937
1%01
830
348
11
11
10
104
154
213
S;S:
3
37
~07
11
17
15
9
92
22
12
23
1947
2159
2780
1434
26311
5144
1310
3556
81
11
1363
32
248
71
2
42
32
7499
250
31192
6045
2
16
5
138
181
815
66
13425
1,005
17870
57
- 45 -
HADDOCK
SPEerES
SEASON
AREA
I
RESEARC-rl VESSEL
.easursG
A"ed
r'O.Cf
INo.OfINo.rlf
sampIes fish
I
1
2
3
4
HA
:;:r 3
rv A
rv B
1
2
3
4
1
2
3
4
5
853
237
7
297
36
11
227
samoIes fieb
1
5
INO.o:."
sameIes :."isb
151
27
59
23
23434
1509
819
2039
3
86
306
5
13C
293'::
8404
12
.)~
C;'
- I
S9
2983
33
12
37
2756
1165
1986
1
7
284
14
598
13
72
405
1241
863
12
1
8
2142
138
649
894
11
8
34
56C:8993
IC" .... ,.
3331
1024
3277
355
1
2
3
4
sar.oles fisb.
3e3
62
108
5
4
B
20
1443
59
Iieas'J'I"sa
WO.~f ~ro.OfWo.OfINo.Of
1
2
3
4
2
3
v
42
3
l'lARI~T
A2ed
202
57
1
15
1
82
"T.;U~
'180
1322
~7
...
~-':l
- 46 -
SPECIES SEASOU
AlGA
I
IIA
Ir B
IV A
IV J
1
2
3
4
2
1
2
3
4
15
1
607
4
1
2
3
4
1
2
3
4
1
2
J
4
V 3
RESEARCH VESSEL
MARI:ET
Ae,:ea
:.Ieasured
A'~ed
Heasured
Xo.of prO.OfIIlO.Of INo.Cf No.of TNo.Of!No.Of ,INo.Cf
sa~Dles risb
SamolHs fish s8m n les fish samoies fisb
1
2
3
4
116
132
1
16
2239
1
25
121
64
115
4
13
1721
4492
5
330
4
152
19
35
718
1201
13
414
14
6
19
798
161
976
10
l,1
623
8
1
1
3
177
385
935
207
10
12
16
13
9
9
7
5
1
2
1
482
2563
1747
2012
1472
14
3
4362
561
11
3823
27
1457
1032
345
900
237
16
30
2433
4345
26
2724
100
- 47 -
::ARJ31'
S.'''W1ES
Ar.:e6.
Ia.af
1'\~.aT'
"~A
samnles fl.st
1
2
3
4
L
A
1
3
1
2
~
.J
tl
40
'; 1",
Of(f
F
4
1
407
f1
2
II
3G
,
.'
125
j
2: 1
2~)
1
52:;
" .-
00
10
1;;
3
156
3
21
195
24
;"79
6216
1
1
15
~"
v,
Il
17:-
RES"SARCH iSSSEL
SPZCIES
ARZ.\
I
-:
2
6
3
4
:1 11
1
45
2
1
4
3
4
_I 3
220
1
8
18
106
6
12
1
2
3
4
IV A
1
2
3
4
5
3
- 48 -
WHITING
---.---..,'------- ------HESEARCH VESStL
I
1
2
3
4
IIA
1
5
23
3
5
2
3
4
IIB
1
2
3
4
IV A
1
272
4
2
3
IV B
~AY
4
1
10
21
656
10
381
29
1227
23
1126
POUT
___,------t--------------3rEClE~
3'" \~Jr
RbSLAliCH VESS",L
T .------------------------
i
. ---:~-äsul'edl
Ail.e
!riA~R~~KE~,T=-__"._:"',__---
~--- Measured
L_
NO.~f INa.Ofll~a.af 'I ~c:>.of No.af jllc:>.af
AHt.A
Ram les fish ,~ampleslll.sh '"ample~.L:tl.sh
---+-----"-=
1
I
2
66
3
2647
57
42ö6
No.af ! N?of
samplesl fl.sh
62
3
4
IIA
1
2
3
4
IIB
1
2
3
9
439
19
'; 117
6
50
28
2095
17
825
2
32
4
IV A
1
2
J
68
J
4
IV B
56
2
2
J
1 )2
61
71
~
392
298
6
332
4
- 49 -
BLUE WHITING
S.t'1C ES!
s~Asml--~:~:~CHI VE~~f~a-::r~dl-~;:d--~~E~:S-=_·_i No.of
AflH
I No.oflI no.of
sa:noles
_ _ _-L_ _~ls:.=:a.:::m~p.::l::::e~ fish
I
No.emo.of I ·O.Ofl ·o.of
No.o:
fish SBI!H.:)eSj rieh samules fish
l
1
Ti
2758
2
8
277
3
4
IIA
1
2
J
4
59
4
11
18
)166
1b4
176
462
IIB
1
2
J
4
62
1
1910
4
296
IV
2
1
2
3
4
P.
7
145
LONG ROUGH DAß
f
---I -._-- ----- --
~
.
RrSEARCH V2S::ET.
,
HARZET
SP1CF -::-A50;
Aged
~1Jees.ur_ej._~_-,!tge~
.
!\leasurea-==
AHEA
1 No.of '1 No.ofll o.of I r.o.ofl !'jo.of ! No.of! No.of I No.of
_ _ _....1 _ _ : samp es, rieh
zsm;l"s [isb ~ Eemplesl rish i 5.sc:p'es fish
I
184
50
51
12516
2392
353
1
2
3
4
&8
18
20
22
l,412
1
2
3
4
3
19
2:>3
3
213
663
13306
164
1
49
ti42
1
2
3
4
IIA
IIB
IV A
2
J
4
IV B
1
2
3
4
847
642
722
7
13
28
431
18
166
- 50 -
--,----- -
1
2
I
J
4
II A
14
18
J
9
J
20
12
JJ
2
:;
4
1
HE
2
J
4
IV A
1
2
J
4
IV B
1
2
J
4
UJ..~ SIELT
--_.-
---
SiBCüS
.,lHA
I
1
2
J
6
31
J
4
HA
1
2
1
289
2
J
1
14
J
30J
4
IrB
1
2
3
4
IV A
1
6
10
6
210
2
J
4
------ ----
-- _.- - -
- 51 -
SANOEEL
----,---S?~CIES
AHEA
I
9
149
2
4
5
5
7
434
2
11
II
IIB
1
2
3
4
IV A
1
2
3
3
4
IV 13
120
1
2
3
4
REOFISH
226
I
55
4
IIA
1
2
J
4
IIB
1
2
3
IV A
103
44
'3
20
126,,8
4
321
1102
20128
23
4
316
2
1
3
2
3
4
18217
34S0
20
1151
6059
1247
95
5
2
16
- 52 -
SHRIMPS
---.-----~-------_._---.-----------_._--
Sf>LCIES :,b;""ON
AriEA
____ .
I
IIA
11 13
IINo.of
RESE.~RCH VESSFL
Aged
'I
No.Of! ~o.of
1
2
3
4
51
178
16191
14183
1
2
3
4
78
3348
1
2
3
5
119
')58
276
4518
27542
1
2
:3
4
IV B
1
2
3
4
V B
1
2
:3
4
~
No re port received.
Aged-----yeasur€cr--
J h?~f.l-.:.".<!!,.P.",€.s,
Ho.Of 1 ~?;~fl~:::of_ il,;:~~
.L~~les f~sh.....L!?E!!!P)_e_JLf.l...s11
4
IV A
r{cAP1CET
Measured
J..~'
- .:2..f).1<~:
.-""1,.". ,-_
- 53 -
PORTUGAL
(F. Cardador)
Ouring 1985,the INIP (Instituto Nac.onal de Investiga9äo das Pescas),
~or­
has conducted two stratified groundfish surveys,on board of the
tuguese R/V "NDRUEGI'l" , in June and October/November,along the Po,'tllgllese Continental coast.The main obJectlve of the first crll.SE was to
estimate indices of abundance cf the most
cOfl'UYlercial
spec..'ies,and the
goal of the secot1d one was to estimate indl.ces cf recl"'UitlYlent Qf
,1i:l.~e
and horse-mackerel.
Dther types of Portllguese research CI·u.ses were carroed
directed to the goals mentioned above,but they had
provide additional biological
.ll
198~, tlC't
contri~uted
Co
information,specia11y fQr .ake.
The National Sampling Programme (P!III'lBl, at the ",ain fiSfl1ng Ioarbours
on the Cont1nental coast,was cOl,ti.lued by INJP,concerning
frequency distribution of the landings,for the most
The following
(~erlucciuS
ables present the samplin_
~ata
len~ht
i~portant specle~.
collected fDr
merluccius),Black scabbard-fish CAphanopus
lUScu5,T.minutus,and same species of seabreams:Paaellus
Spotldyl i osoltla cant ha rus, B.QSU!s boops and Spa rus pag "us.
~.Ke
car~o),Trisopterub
aCA,ne,Pa~OQ~ia~~\
- 54 -
TABLE 1 - Merluccius merluccius
Season
Al"ea
Nu~ber
of samples
Research
vessels
st
2 nd
IXa
Aged
*
390
20515
21
524
42753
1273
3 r'd
50
432
23214
1235
4 th
124
238
22248
931
278
1584
108740
3451
TOTAL
1985
*
**
93
Mal'ket
sa,,,ples
NLtlYlber of fish
MeasLtr'ed
Rac1al**
invest.
to be aged
no racial studies in INIP
TABLE 2 - Aphanopus carbo
Season
IXa
Number of sa,nples
Research
Ma\'ket
vessels
sa,npl es
Nu,nbe,' of fish
MeasLtl'ed
st
5
388
2 nd
7
382
3 rd
7
452
35
3
7'37
35
23
2029
4 th
TOTAL
1985
Agp.d
Rac1.C' 1**
invest.
- 55 -
TABLE 3 - Trisopterus luscus
Seasot1
(quarter)
Number of sampies
Research
Market
sampies
Measured
221
17028
230
15903
219
17128
19
197
17585
35
857
58744
vessels
st
2 nd
15
3 rd
IXa
4 th
TOTAL
1985
**
NUlliber of fish
Aged
Racial**
invest.
no racial studies in INIP
TABLE 4 - Trisopterus minutus
Area
Season
(qua rter)
Nu~ber
of
Research
vessels
sampl~s
Market
sampies
Nutl"lber cf
Measured
st
2 nd
IXa
9
236
9
875
18
1112
3 l'd
4 th
TOTAL
1985
** no I'acial studies in INIP
f~sh
Aged
Racial**
invest.
- 56 -
TABLE 5 Area
Pagellus acarne
Season
(quarter)
Number of samples
Reseal'ch
vessels
Market
samples
st
2 nd
IXa
TOTAL
1985
Measured
Aged
*
56
2788
131
68
7566
67
68
3707
87
14
68
4600
130
41
260
18661
415
27
3 rd
4 th
Nu.Ylber of fish
Racial**
invest.
* including otoliths and scales collected,not read
**
no racial studies in INIP
TABLE 6 - Pagellus bogaraveo
Season
(quarter)
Numbel' of sampies
Resea ,'ch
vessels
st
.L
,~
208
19
767
16
426
4 th
12
332
59
1733
t'ld
TOTAL
1985
13
Number of fish
!'tteastlped
3 rd
2
IXa
Ma rket
sampies
13
** no l'acial studies in INIP
Aged
RaciaJ**
invest.
~
- 57 -
TABLE 7 - Spondyliosoma cantharus
Season
(quarter>
Number of sampies
Research
vessels
st
2 nd
IXa
21
TOTAL
1985
Measured
Aged
Racial**
il'lvest.
27
832
40
1453
35
1042
7
31
747
28
133
4074
3 rd
4 th
Market
sampIes
Nlll.ber of fish
TABLE 8 - Boops boops
Area
Season
(quarter)
Number of sampies
Resea I'ch
vessels
IX ..
54
445:::
58
3700
12
70
4742
43
255
15842
31
TOTAL
1985
Aged
Racial**
invest.
3948
3 rd
4 th
~1easured
53
st
2 nd
Ma rket
sampies
Number' of fiSh
- 58 -
TABLE 9 - Sparus pagrus
Area
SeaSOtl
NUMber of saMples
Resea ,'eh
vessels
st
26
252
nd
26
212
3 rd
23
230
4 th
20
185
95
879
.~
lXa
Ma rket
sampies
NUJY,ber of fish
==========================
RaCial**
Measured
Aged
invest.
TOTA
6
6
1985
•• no raeial studies itl IN1P
1
l
~•
1
- 59 -
SPAIN
(F.J. Pereirol
SAMPLING DATA FOR HAKE 1985
~
N" OF SAMPLES
AREA
N" OF FISH
SEASON
RESEARCH VESSEL
MARKET SAMPLES
MEASURED
AGED
1
2
268
2
1
62
3
4
396
5
581
1
8
2 760
2
13
2 928
3
19
4 267
4
26
5 729
1
42
6188
2
51
8 312
3
43
9 069
4
37
6 817
1
23
2 641
2
50
4 453
44
11 753
4
32
4 529
1
22
3373
222
2
21
2 949
157
19
9 4]0
751
28
2 934
61,4
VI
- - - ~._--
-------- f---
VII
VIIlab
VIIlc
3
,0
169
IXa
]
4
29
RACIAL INV.
- 60 _
SAMPLING DATA FOR MONK L. BUDEGASSA 1985
...---'
N~
AI?EA
OF SAMPLES
N~
RESEARCH VESSEL
MARKET SAMPLES
MEASURED
1
2
VI
3
f--
OF FlSIl
SEASON
~
1
6
7]6
2
6
71,1,
3
25
2368
~
21
1 880
1
18
697
2
30
717
]
23
621,
~
23
1 202
1
11
267
2
16
280
25
352
I,
26
M2
1
1
50
2
3
-
-
~
9
107
VII
VIIIab
VIIlc
]
IXa
7'J
-
AGED
RACIAL lNV.
- 61 -
SAMPLING DATA FOR MONK L. PISCATORIUS 1985
N9 OF SAMPLES
AREA
N" OF FISH
SEASON
RESEARCH VESSEL
MARKET SAMPLES
MEASURED
1
2
VI
3
I;
1
6
371;
2
6
364
3
25
2 159
I;
21
2 043
1
21
1 522
2
30
1 21;9
3
26
1 1;03
I;
23
2 021
1
15
568
2
20
852
31;
1 372
I;
36
1 266
1
1
19
VII
VIIIab
VIIIc
3
2
IXa
3
I;
79
-
9
85
AGED
RACIAL 1M'.
- 62 -
SAMPLING DATA FOR MEGRIM L. ROSCll 1985
NP OF SAMPLES
AREA
RESEARCIl VESSEL
J
I
NP OF FISIl
SEASON
MARKET SAMPLES
MEASURED
AGED
1
1
2
-
-
3
1
2
I,
1
3
1
11
183
25
VI
1
2
9
58
1
3
20
1 186
8
4
18
1 142
39
1
14
62
2
1]
64
Vll
;
VIllah
3
14
289
I,
18
358
1
6
170
2
6
414
11
1 251
4
11
885
1
I,
322
5
447
6
831
11
834
VIlle
J
7~
2
2~8
IXa
3
I,
29
356
RACIAL INV.
- 63 -
SAMPLING DATA FOR MEGRIM L. WIFFIAGONIS 1985
N~
AREA
N~
OF SAMPLES
OF FISI/
SEASON
RESEARCH VESSEL
1
MARKET SAMPLES
MEASURED
1
1;5
2
-
-
3
5
680
I;
6
322
1
11
3 622
VI
AGED
235
2
9
2 793
221
3
22
I; 388
172
I;
22
I; 413
217
1
21
1 022
2
21
1 096
3
21
1 15')
I;
21
1 271;
1
9
1 083
2
7
658
VII
VIIlab
VIIIc
H
1 772
I;
12
921
1
I;
7
2
5
15
3
IXa
7'l
3
6
8
I;
11
123
3r.5
1
RACIAL INY.
- 64 -
SAMPLING DATA FOR SEABREAM 1'. BOGARAVEO 1985
N9 OF SAMPLES
AREA
N9 OF FISll
SEASON
RESEARCll VESSEL
MARKET SAMPLES
MEASURED
AGED
RACIAL INV.
1
2
VI
3
4
--
I
2
VII
3
1
19
4
1
15
1
8
153
2
10
91
3
1
6
4
1
7
1
33
3296
2
32
2 405
1b
805
12
760
VIIlab
VIIlc
_ _3_ _
4
1
2
IXa
3
4
79
-----
-- f----
- 65 -
~
(B. Sjöstrand)
Sweden took part in the International Young Herring
Survey in the North Sea and the Skagerrak. However,
it has no other activities on which to re port owing
to reduced opportunities.
- 66 UNITED KINGDOM (England and Wales
(C.T. Macer)
England and Wales demersal'flsh sampling 1985
Species
Area
Research Vesse1s
Harket
No of flsh
Bass
Cod
Dogfish
(spurdogs)
104C
107A
107D
107E
107F&G
104A
104B
104C
106A
106B
107A
107D
107E
107F&G
10711
107J
104A
104B
104C
106A)
107A)
108
Haddock
104A
104B
104C
106A
106B
107A
Hake
106A
107A
107E
107F&G
10711
107J
108
Lemon sote
Megrim
107A
107D
107E
107F+G
10711
107J
108
107A
107E
107F&G
10711
107J
108
Sampies
Measured
+
+
+
+
+
+
+
+
No of flsh
Oto'd
40
204
805
116
Sampies
Measured
5
4
20
8
3
46
618
71
Oto'd
'''}
220
163
572
303
147
163
519
218
147
606
569
952
059
887
14 122
677
625
6 335
979
269
193
914
29
94
7
100
10
2
+
+
237
12
11
99
26
+
+
+
+
+
+
+
+
3
98
7
25
6
675
+
+
+
+
27**
10**
14
79
38
1 303
5 365
2 971
19**
20**
44
4 685
21**
34
296
5
18
33
2
6 631
45 863
528
3 285
5 298
219
1
21
63
3 669
37
2 436
1
78
138
10 593
284
23
2 935
231
+
+
40
+
+
+
+
+
+
425
049
24
+
+
+
+
+
+
+
+
+
+
+
+
67
38
178
59
213
182
+
+
98
+
+
+
+
10
87
23
37
7
+
+
1
+
+
+
+
+
+
+
+
155
294
689
126
+
+
+
+
+
+
5"",10)
Sp"""
398
2 930
19
429
442
54
- 67 England and Wales demersa1 fish samp1ing 1985
Species
Area
Research Vesse1s
Market
No of fish
Monk or
Anglers
P1aice
Measured
107A
1070
107E
107F&G
107H
107J
108
+
+
41
+
+
+
+
+
+
+
+
+
+
5
42
35
173
84
104A
104B
104C
107A
1070
107E
107F&G
107H
107J
+
+
+
+
+
+
+
+
+
+
Samp1ea
Measured
Oto'd
129
9 249
122
279
54
528
18
136
1
+
+
40
46
91
17
4 674
29 472
197
13 975
2 235
10 475
2 704
371
3 056
25
864
394
956
322
35
+
+
12
+
+
+
+
164
21
11
2
3
1
447
163
287
70
203
53
47
13
+
+
1
+
+
330
+
+
+
+
+
+
88
9
4
66
60
52
47
88
28
8 952
8 994
8092
2 489
13 642
4 790
5
811
712
484
258
483
246
104A
1048
104C
107A
1070
107E
107F+G
107H
107J
108
+
+
+
+
+
+
+
+
352
1 132
309
828
17
+
+
+
+
+
+
+
+
+
78
147
21
24
7
238
5
98
5
78
12
1
1 733
20 141
295
11 137
176
9 986
1 500
178
104A
104B
l04C
l07A
-l07E
107F&G
107H
l07J
108
+
+
+
+
+
42
5 852
104,A
1048
106A
107A
Sole
104A
1048
104C
107A
1070
107E
107F&G
108
Skates &
Rays
Oto'd
72
Saithe
Whtting
No of fish
Sampies
+
+
+
+
+
72
42
+
+
+
+
+
+
+
+
+
256
2 150
062
182
414
100
-------------------------. -----------_._---
- 68 -
England and Wales demersa1 fish samp1ing 1985.
Sampies taken on Research Vesse1s on1y.
Species
Area
No of fish
Sampies
Measured
Oto'd
B1ue
whiting
104A
107E
107F&G
107H
107J
108
+
+
+
+
+
+
+
+
+
+
+
+
13
111
23
54
117
Ling
104A
104B
107A
107E
107F&G
10711
107J
108
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
17
8
10
4
23
18
5
20
Norway
Pout
104A
104B
+
+
+
+
141
241
10~A
+
+
+
+
+
+
+
+
+
+
+
+
1
29
5
58
2
2
Pollack
104B
107A
107F+G
107J
108
--
-----
------
--
---_._-
-
6') -
UK (Scotland)
(R. Jenes)
(1) Sampling Demersal Fieh
In 1985 the numer cf gears sampled on a regular basis at S
Scettlsh fish markets was increased to five (motor trawl,
demersal seine, light trawl, Nephreps trawl end pair trawl)
to take account of the development of pair trawling as
a significant component of the Scottlsh demersal fleet.
Demersal fish were sampled at all the major flshing porte in
Scotland. The Intensity of sampllng cf the major demersal
species is indicated in the text table below.
Species
Ced
Haddock
Whitlng
Salthe
613
602
575
288
80261
173986
118325
18715
23055
23658
16995
6189
Samp11ng of demersal fish discarded by the Scottlsh fleet was
also carrled out en a regular basis in 1985. Samples were
obtalned during the course cf 67 cecmercial trips from 914
hauls. The intensity of samp11ng 1s indicated in the text
table below.
s
pec~es
,
,.
I
Ced
Haddeck
Whlting
Others
67
67
67
67
10109
82469
31718
79813
1941
6016
4626
Nil
- 70 -
(2) Rasearch Veaeel Act1vit1es
In January 1985 "Scotia" carried out a aurvey of demersal
fiah and herring stocks off the west coast of Scotland
(leES Sub-area VIa).
In February, 1985 "Scotia" participated in the International
Young Fisb Survey in tbe Nortb Sea.
In August 1985 "Scotia" carried out a survey of demersal fisb
stocks in the northern and middle Nortb Sea (ICES Sub-areas
IVa and IVb).
In June 1985 "Clupea" carried out a pelagic O-group survey for
gadoid species. (Tbis survey 1s,a partial continuation of tbe
International O-group Gadoid Survey which was discontinued in
1983.)
In September 1985 a commercial vessel, the "Clarkwood", was
cbartered to carry out a survey of the haddock stock on Rockall
Bank.
(3)Tagging of Demersal Fish
It was decided in 1980 that Scotland would carry out no
furtber tagging of demersal fisb until all of the data from
previous tagging experiments had been collated, included in an
appropriate computer data base and had been examined at least
on a preliminary basis.
Tbe computer data base for cod, baddock, whiting and saitbe
was completed in 1983 and preliminary analysis of tbe results
had been completed tor saitbe and is in progress tor whiting.
- 71 -
tl.S. ADMINISTRATIVE REPORT TO DEMERSAL FISH COMMITTEE
(M. P. Sissenwine)
The tl.S. did not fish in the Northeast Atlantic region during 1985 so it
has no biological samples to report.
Although it didn't physically conduct
research in ICES zone, the tl.S. continued to contribute to Statutory Meetings
and Working Groups.
The tl.S. has an extensive research program on demersal
fish of the Northwest Atlantic.
Because of the similarities in fisheries and
fish communities between the east and west sides of the North Atlantic, tl.S.
research program is relevant to ICES.
The tl.S. demersal fish research in the Northwest Atlantic continued along
the same lines as in previous years.
The research is multifaceted including
(1) eolleetion of harvesting statisties, (2) eolleetion of biological samples,
(3) standardized bottom trawl surveys, (4) standardized iehthyplankton
surveys, (5) special studies (field and laboratory) on reeruitment processes,
(fi) studies of the effects of anthropogenie agents, and (7) analyses.
Important advanees are being made in the seientifie eonduet and analysis
of trawl surveys.
These inelude gear interealibrations studies, improved
instrumentation to monitor gear performance, evaluation of survey design, and
npw methods of times series smoothing to take aeeount of between survey
variability in catehability eoeffieient.
Ichthyoplankton survey data is also
being subjected to more intense analysis than ever be fore to improve estimates
of within survey variance, to evaluate the propagation of error in methods of
hack ealeulation of spawning biomass, and to derive an alternative estimate of
total finfish biomass.
Studies of recruitment processes focus on Georges Bank cod and haddock.
The work completed to date indieates that predation and post-larval (snall
- 72 -
juveniles) survival rate are more important conponents of the recruitment
problem than believed previously.
Recruitment studies are proceeding to test
sampling gear neened to collect post-larval fish and their predators, and to
nefioe nistrihutioos in time and three nimensional space.
Laboratory
facilities are being monifien to allow experimentation on post-larval fish.
The II.S. has formulated anational multiagency recruitment initiative which
falls unner the umhrella of IREP.
A variety of important analyses are under way.
These inclune (1) further
development of multispecies (hoth technological and hiological interactions)
modeling techniques, (2) methons of analysis of survey data (as noted above),
(3) analysis of foon habits data. (4) energetic models of recruitment, and (5)
development of new stock assessment methods.
In addition lI.S. scientists are
reevaluating hiological reference points for fisheries management consistent
with recent deliberations of the lCES Ad Hoc Methons Working Group.
Current
stock assessments indicate that demersal fish abundance is severely depressed
and that fishing mortality rate is too high relative to traditional and newly
formulated biological reference points.
The lI.S. is conducting a variety of studies of the effects of
anthropogenie stress on demersal fish production.
flounners that inhahit coastal waters.
The emphasis is on
These studies focus on reproductive
effects of stress and the relationship between habitat quality and incidence
of "serious" (i.e. effecting productivity of the population) diseases.
A high
incinence of malignant tumors has been faund in livers of winter flounder
(Pseudapleurooectes americanus) from some highly degraded areas.
A more complete report of lI.S. research in the Northwest Atlantic is
presented annually to NAFO.
- 73 USSR
(S.A. Studenetsky)
In 1985, as previously, investigations to assess young and
adult commercial bottom fishes were carried out by the methode
of the trawl-acoustic survey. The strength of cod, haddock, redfish, saithe and other fishes
estimated by eggs, larvae and
WRS
fingerlings.
Continued were investigations to study ecological-physlologica1 features in commercial fishes during the wintering and feeding. Some elements 01' the trawl-acoustic survey 01' bottom
were drllled. With the submersible
~ishes
equipment oollected were ma-
terials to calculate the catchability coetficients of sampling
trawls separately by species and sizes. Methods were worked out
to calculate allowable by-catches of young cod, haddock end redflsh when
tishin~
:ror capelin and
shr~p.
Continued was collecting of ichthyological data by size-age
con:position, feedine:, maturity in cod, haddock, redfish, plaice,
Greenland halibut, long rough dab,
wol:f'~ishes
area I and Divisions IIa and IIb.
in the IeEe Sub-
...
Materials collected in 1985 onboard research, scounting and
fishing vessels are set out in the table below.
lCES area
Quarter
2
1
Sub-area I
I
I
II
No. of fiehexaminei;l
for feedUlg
measured
3
8532
?8?54
4
2360
65?8
aged
5
914
1?OO
- 74 1
;
2
;0179
65;29
4164
2287
1577
2112
I
1087
7;
1797
2565
447
III
49;7
668
9937
24030
871
1630
I
II
III
7148
4458
2142
4;5
1119
125
6624
1720
710
240596
25208
11205
II
IV
Division IIa
5
III
IV
Division IIb
4
IV
Total
-
-
Haddock
Sub-area I
Division IIb
I
II
III
IV
2879
288;
1571
4316
1401
721
919
2556
275
50
982
200
IV
25
144;
445
11926
I
II
496
16
256
16
207
4588
782
410
157843
14010
7096
25
50
55
276
.300
I
II
III
Di.vision IIa
~5092
26154
14552
63106
III
IV
Total
I
682
Redfish
Sub-area I
I
II
4898
3991
IV
4080
I
336
252
IV
68;
4462
964
8259
140
277
100
I
II
25872
24832
~887
1702
3170
III
Division IIb
II
III
Division IIa
67~
-
~
j
I
- 75 -
1
2
III
IV
Total
3
4
5
12187
9.35
500
90901
9151
6254
Greenland halibut
Sub-area I
I
II
III
74
-
139
156
IV
Division IIb
I
II
III
IV
Division IIa
I
II
III
IV
Total
1
1646
941
2099
8119
388
754
175
1053
194
1173
300
175
300
300
3565
18212
250
383
2724
1248
50
150
1
50
100
~
Sub-area I
I
Ir
III
IV
Dl....islon IIb
I
Total
826
.30
953
-
Ir
101
IV
3696
125
I
874
235
326
80
IV
102
50
7871
832
III
Division IIa
1054
II
III
-
-
-
303
403
- 76 -
1
j
2
3
4
5
Wolffishes
Sub-area I
I
II
Division IIb
}19
718
I
II
III
320
IV
Division lIa
72
-
III
IV
I
Ir
III
IV
Total
-
1
125
125
682
311
193
9
235
20
4486
1052
456
2048
.355
200
769
2511
424
500
5.328
779
700
lI88
1604
63
9
Plaice
Sub-area I
I
II
III
IV
Division IIb
I
II
III
IV
Division IIa
I
II
III
IV
Total
Long rough dab
Sub-area I
I
II
III
IV
-
.33.35
275
31~
200
726
8331
200
200
- 77 -
1
Division IIb
Division IIa
Total
Sum total
for all species
•
2
4
5
1678
185
60
IV
8325
300
200
I
640
50
75
50
IV
1925
3
I
II
III
II
III
-
27418
1811
660
552655
55567
28022
Fish samples were collected by research vessels only.