.
()(V
•
International Council for the
Exploration of the Sea
C.M. 1992/0:1
Report of Activities
DEMERSAL FISH COMMITTEE
by
NielsDaan
1991
•
.
Table 01 Contents
BELGIUM
CANADA
DENMARK
FAROES
FEDERAL REPUBLIC OF GERMANY
FINLAND
FRANCE
2
4
9
16
17
lCELAND
24
lRELAND
11IE NETI-IERLANDS
NORWAY
roLAND
roR11JGAL
RUSSIA
SPAIN
SWEDEN
UNITED KINGDOM (England and Wales)
UNITED KINGDOM (Scotland)
U.S.A
28
31
37
43
44
47
50
54
56
64
65
5
6
-2-
.
BELGIUM
(R. de Clerck)
Dcnsities and growth rates of the 1990 and 1991 year classcs of sole, plaice, dab, floundcr, cod and whiting
wcre rccorded. Two cruises were undertaken for this purpose according to the criteria of the International
Demersal Young Fish Survey. The bcam trawl survey was continued in order to estimate the stock size of
adult flatfish in the southern North Sea in August. This was part of an international survey in collaboration
with the Dutch and English Institutes.
The market sampling programme was continued covering cod (North Sea), whiting (North Sea, haddock
(North Sea), plaice and sole (North Sea, English Channel, Celtic Sea and Irish Sea (see tables).
SAMPLING DATA FOR:
1991
SOLE
Nr offish
Nr of sampIes
Arca
IV
VIIf,g
VIIa
Scason
Res. vcssels
VIII
Market
Measurcd
Agcd
1
2
3
4
-
12
10
9
7
1175
965
855
638
230
220
220
218
1
2
3
4
-
3
1
3
4
280
80
290
385
70
80
80
160
·
·
-
-
-
1
.
·
-
1010
160
79
230
160
79
1
2
3
4
-
1
6
3
70
571
280
70
230
70
1
4
-
1
2
280
140
70
140
-
-
SAMPLlNG DATA FOR:
-
1991
PLAICE
Nr of sampIes
Area
-
10
2
1
2
3
4
VIId,e
BELGIUM
Season
Res. vessels
BELGIUM
Nr of fish
Market
Measurcd
Agcd
IV
1
2
3
4
-
12
10
10
8
778
665
629
465
130
140
140
140
VIIf,g
1
2
3
4
-
3
1
3
4
194
40
190
212
50
40
40
80
VIIa
VIId,e
-
1
2
3
4
-
1
2
3
4
-
-
-
-
10
2
1
616
80
40
130
80
40
1
40
342
184
40
129
40
6
3
-
-
.
,-----
- - - -
-
-3-
SAMPLING DATA FOR:
1991
eOD
Nr of sam les
Area
IV
Season
Res. vessels
Mar ket
Measurcd
Agcd
2
100
210
93
250
100
210
93
250
1
2
4
2
3
4
5
SAMPLING DATA FOR:
1991
WHITING
IV
Season
1
2
3
4
Res. vcsscls
BELGIUM
Nr offish
Nrofsam les
Arca
BELGIUM
Nr offish
Mar ket
Measurcd
Agcd
4
165
205
258
225
165
205
135
225
3
3
5
. -
-4-
CANADA
(R.O'Boyle)
Canada had no fisheries and no research vessel activity on demersal fish in the ICES area in 1991. Activities
in the Northwest Atlantic have been reported to NAFO.
DEN MARK
(H.Gislason)
< No report received >
- 5 -
FAROES
(J.Reinert)
The sampling programme for commercial catches of saithe, cod, haddock, Norway pout, tusk, ling, blue
ling, Greenland halibut and redfish was continued in 1991. In addition sampies of the species mentioned
were laken from research vesscl catches. The tables provide more details.
The following research cruises with relevance to the Demersal Fish Committee were made in 1991:
In January RIV "Magnus Ileinason" carried out a Groundfish Survey around thc Farocs as apart of
thc Farocsc Stornach Sampling Programme.
In January-February RIV "Magnus Ileinason" carried out an exploratory fishery for blue ling to
thc Sand SW of thc Faroes.
In February RIV "Afagnus lleinason" carried out an exploratory fishery wiLh bOUom trawl for cod
on the Faroc Plateau and thc Iceland-Faroc Ridgc.
In February-March R/V "Magnus lleinason" continued thc Faroesc Groundfish Surveys spccially
designed to obtain information on the stock sizes of cod and haddock.
In April RIV "Magnus lleinason" carried out a bouom trawl survey for redfish around thc Faroes.
The survey was continued in October.
In April-May RIV "Magnus Ileinason" carried out a boUom trawl survey for Norway pout around
thc Faroes.
In May-Junc the commercial trawler M/S Skalafjall was chartered to carry out exploratory fishing
for redfish in thc Irminger Sea.
In June-July RIV "Magnus lleinason" continued the O-Group Surveys in Faroese Waters to get
information on the year-class strength of cod, haddock, Norway pout and sandeeI.
In June-July the commercial trawler AllS "Skar(}hamar" was chartered to carry out an exploratory
fishery with bottom trawl around thc Faroes for flatfish, particularly lemon sole.
In August/-September RIV "Magnus lleinason" carried out a Groundfish Survey around the
Faroes, espccially designed for saithe.
In September a stornach sampling survcy was carricd out with RIV "Magnus lleinason" designed
to el ucidate the amount of predation on Norway pout
In Scptember-October RIV "Magnus lleinason" carried out fishing experiments around thc Faroes
with a bouom trawl mountcd with a soTting grid. These experiments were continued in December.
In October-November RIV "Magnus lleinason" carried out a combined acoustic and trawl survey
for demersal fish around the Faroes.
On all cruises with RIV "Magnus lleinason" biological sampIes are taken as a routine for most fish
species from almost every hauI and thc measurements are entered into the vessel computer automatically.
Since all data have not been edited yet, the number of sampies and measurements by spccies for 1991 can
not be given at this stage except for selccted species in the Faroese Groundfish Surveys in February-March
and in August-September, and in the Norway pout surveys in April-May and September.
SAMPLING DATAFOR:
1991
COD
FAROES
Research vessel
Area
Vb
Season
1
2
3
4
Market
N SampIes
. NMeasured
NAged
N SampIes
NMeasured
NAged
6
...
261
3
...
140
77
34
29
37
13 298
4 120
3432
5 109
698
784
. 690
853
...
...
-
6 -
SAMPLING DATA FOR'. I1ADDOCK
1991
FAROES
Market
Research vessel
Arca
Vb
Scason
N Sarnplcs
NMcasurcd
NAgoo
N Sarnplcs
NMcasurcd
NAgoo
7
*
*
342
30
18
21
25
11 271
3979
6548
8 818
301
398
496
552
1
2
3
4
*
3
*
SAMPLING DATA FOR'
150
1991
SAITIIE
FAROES
Market
Research vessel
Arca
Season
Vb
1
2
3
4
N Sarnples
NMeasurcd
NAgoo
N Sarnplcs
NMcasurcd
NAgcd
7
*
299
*
100
48
41
41
43
11 146
10 419
9279
8377
606
500
551
600
*
2
*
SAMPLINGDATAFOR:
1991
NORWAY POUT
FAROES
Research vessel
Arca
Scason
Vb
1
2
3
4
Market
N Sarnples
NMeasured
NAgoo
N Sarnplcs
NMcasurcd
NAgcd
26
54
68
15
783
9 881
8467
154
503
503
*
15
4
6
9
1 781
401
594
952
750
200
250
448
SAMPLING DATA FOR'
*
1991
Sebastes marill11S
FAROES
Research vessel
Arca
Scason
Vb
1
2
3
4
N Sarnples
NMeasurcd
Market
NAged
N Sarnplcs
NMeasurcd
5
1
1 063
46
1
141
*
*
*
*
.
SAI\1PLING DATA FOR·
-
Sebastes melltella
Vb
Scason
N Sarnplcs
1
2
3
4
NMcasurcd
FAROES
Market
NAged
N Sarnplcs
NMeasured
NAgoo
8
12
20
15
4367
6313
12748
9256
-
*
*
*
*
SAMPLING DATA FOR'
1991
TUSK
FAROES
Market
Research vessel
Arca
Vb
Scason
1
2
3
4
N Sarnplcs
*
*
*
*
NMcasurcd
-
-
1991
Research vessel
Area
NAged
NAgoo
N Sarnplcs
NMcasuroo
NAgoo
2
1
5
3
762
878
1 378
404
50
-
-
SAMPLlNG DATAFOR:
7 -
1991
LING
FAROES
Research vessel
Area
Vb
Season
N SampIes
1
2
4
NMeasured
Market
NAged
N SampIes
NMeasured
NAged
3
2
1
588
164
165
-
*
*
*
SAMPLING DATA FOR:
1991
BLUE LING
FAROES
Research vessel
Area
Vb
Season
Market
N SampIes
NMeasured
NAged
N SampIes
NMeasured
NAged
16
*
299
2
3
9
4
335
315
995
424
-
1
2
3
4
*
*
*
SAMPLING DATA FOR:
GREENLAND HALIBUT
1991
Vb
*
Scason
I N SampIes
1
2
3
*
*
4
*
NMeasured
*
Not possible to quantify at this stage (see text).
.
FAROES
Research vessel
Area
-
Market
NAged
N SampIes
NMeasured
NAged
1
0
2
1
364
189
143
103
-
-
.
-
8 -
GERMANY*
(G.Rauck)
Thc biological sampling programme of demersal species on board of research vessels, commercial trawlers
and on fish markets has been continued.
A comprehensive sampling scheme, including length frequency measuremcnts, otolith sampling, individual
fish weights, tagging of fish, stornach sampling, as weIl as studies on fish density and distribution of
demersaI fish species was carried out during groundfish surveys.
The monthly by-cateh analysis of the shrimp fishcry has been continued, as weIl as the joint investigations
in the Wadden Sea area of Niedersachsen and Schleswig-Holstein (Young Fish and Brown Shrimp Survey)
in spring and autumn together with vessels from the Nethcrlands and Belgium.
A North Sea groundfish survey with special emphasis on the gadoid and pclagic species covering the area
IVa and b has been repeated.
Research vessel cruises rclated 10 the national sampling scheme of the demersaI species wcre as folIows:
Months
leES area
Objectives
R.V. "Walther Herwig"
January
Jan./Febr.
Febr./March
March/May
May/June
June/July
SeptJOctober
OCl.!November
IVa,b,c
IVa,b,c
VIa,b, VII
XIV + NAFO
IVa,b
IVa,b, Va,b
XIVa, NAFO SAI
XIV
Groundfish survey (fish diseases)
IYFS
Groundfish and pelagic survey
Groundfish survey
Groundfish survey
Groundfish survey(fish diseases)
Groundfish survey
Groundfish survey
R.V."Solea"
January
Fcbruary
May//June
July
September
IVb
IVb,c
IVb
IVb,c
IVb
Brown shrimp beam trawl survey
Groundfish survey
Sole beam trawl survey
Groundfish survey
Sole beam trawl survey
Notes to tables:
1) Sampies laken on board of commercial trawler
2) Groundfish surveys
3) Young Fish and Brown Shrimp Survey
4) Shrimp by-catch investigations
5) Brown shrimp beamtrawl survey
6) Sole beamtrawl survey
* The sampling programme of thc former Gcrman Democratic Republic has been included in the tables.
- 9 SAMPLING DATA FüR'
•
Area
Season
Ha
2
IVa
IVb
Meas.
Agcd
31)
21 962
817
1
2
3
602)
442)
142)
452
676
162
365
630
1
1
1
2
2
2
2
3
3
3
3
4
4
1242)
54)
275)
1382)
373)
194)
516)
832)
193)
264)
56)
403)
184)
4508
17
113
3 261
93
46
306
1 388
50
73
5
320
70
1 404
IVc
1
3
142)
282)
80
217
74
207
Va
3
162)
22
Vbl
3
132)
49
VIa
1
212)
76
76
VIb,c
1
22)
10
10
VIIe
1
42)
4
VHg-k
1
22)
2
XIV
1
2
3
4
742)
542)
532)
7450
607
599
429
605
599
4
1122)
776
776
NAFO
SAI
Nr samp.
SAMPLING DATA FüR:
Market sarnpling
Nr 01' tish
Other
Season
Meas.
VIa
1
22)
127
VIIb,c
1
12)
126
VIIe
1
32)
7
VII2-k
1
112)
1 298
Meas.
Agcd
1 341
1 217
1 600
345
733
587
571
179
275
668
3
2
4
1
Agcd
F.R.G.
1991
BLUE WIIITJNG
Area
Nr samp.
1 153
Market sarnpling
Nr of fish
Research vessels
Nr 01' fish
Nr samp.
FRO
1991
eOD
Research vessels
Nr 01' tish
Other
Nr samp.
Meas.
Agcd
SAMPLING DATA FüR'
10 -
Nr samp.
Mcas.
Arca
Scason
lIa
1
151)
2 981
IVa
1
2
3
702)
312)
142)
21 718
4906
1 402
668
407
IVb
1
2
3
642)
782)
222)
9794
6390
1 631
422
555
234
Va
3
162)
2 174
VIa
1
272)
2730
293
VIIb,c
1
62)
426
48
VlIe
1
12)
1
VIIg-k
1
12)
1
XIV
4
12)
192
SAMPLlNG DATA FüR'
Market sampling
Nr of tish
Agcd
Other
Scason
IVa
1
2
3
IVb
Mcas.
Agcd
1
277
138
F.R.G.
1991
\VIIlTING
Mcas.
Agcd
662)
282)
142)
10910
2770
310
476
302
1
1
1
2
2
2
3
3
3
4
4
4
1172)
265)
64)
1092)
923)
594)
472)
263)
394)
412)
393)
164)
20 121
2 130
278
16840
2 059
2022
5992
91
211
8 145
189
41
465
1
3
122)
132)
13 095
15 035
Va
3
142)
14
VIa
1
222)
15 045
180
VlIb,c
1
72)
145
53
VlId
4
72)
636
-
VIIe
1
62)
248
VIIg·k
1
32)
21
IVc
Nr sarnp.
Nr sarnp.
192
Research vessels
Nr offish
Area
F.R.G.
1991
HADDüCK
Research vessels
Nr of tish
Market sampling
Nr 01' fish
Nr sarnp.
Othcr
Mcas.
Agcd
801
625
•
126
219
I
I
,.--------- -
SAMPLING DATA FÜR:
11 -
Area
Season
IVa
1
162)
143
VIa
1
122)
43
VIIb,c
1
22)
2
VIIe
1
32)
5
SAMPLING DATA FÜR:
Area
Season
Vb
1
XIV
3
4
Meas.
Nr samp.
Nr samp.
12)
SAMPLING DATA FÜR:
Agcd
Market sampling
Nr of tish
Other
,
I
Meas.
220
Agcd
Nr samp.
,
Other
220
•
Nr samp.
Meas.
I1a
4
IIIc
4
IVa
1
2
3
4
Vb
1
VIa
1
82)
211
VIIb,c
1
62)
59
VIIg-k
1
62)
61
VII
1
12)
121
162)
12)
SAMPLING DATA FÜR:
4390
44
Nr samp.
Meas.
Agcd
I
1
273
136
I
4
1225
639
Agcd
Market sampling
Nr of fish
Other
28
8
1
22)
44
41
1
42)
21
Via
VlIe·k
Agcd
6
2549
1 316
1
62
62
4
10
10
4
2067
5 009
4440
2088
1 064
2865
2 003
1 073
1
440
248
F.R.G.
1991
POLLOCK
22)
1
Mcas.
67
Agcd
IVa
Nr samp.
Nr samp.
737
44
Meas.
Season
F.R.G.
1991
Market sampling
Nr of fish
Research vessels
Nr of fish
Area
F.R.G.
I
Research vessels
Nr of tish
Scason
Agcd
Market sampling
Nr of fish
I
SAITIIE
Area
Meas.
1991
ß LUE LING
Research vessels
Nr of fish
I
I
F.R.G.
1991
LING
Research vessels
Nr of tish
Other
Nr samp.
Mcas.
Agcd
SAMPLING DATAFOR'
12 -
Area
Season
Nr samp.
IVa
1
72)
12
VIa
1
212)
406
VIIb,c
1
92)
73
Vlle
1
102)
41
VII~·k
1
252)
611
SAMPLING DATA FOR'
Meas.
Market sampling
Nr 01' tish
Aged
OLher
Nr samp.
Season
IVb
1
2
2
2
3
3
3
4
4
Nr samp.
55)
613)
464)
936)
363)
774)
316)
533)
174)
SAMPLING DATAFOR:
Meas.
19
295
190
5 858
524
1 537
741
914
181
Aged
OLher
F.R.G.
Nr samp.
2
Meas.
Aged
487
293
F.R.G.
1991
Meas.
Season
IVa
1
2
3
312)
142)
62)
1 100
904
869
IVb
1
1
1
2
2
2
2
3
3
3
3
4
4
4
1142)
34)
266)
1032)
1063)
544)
65)
482)
743)
794)
465)
362)
723)
324)
18275
65
2 130
11 133
2781
1 043
340
3483
1 952
2 206
4 025
2 979
2 035
2100
IVc
1
3
112)
32)
1 850
19
VIa
1
12)
71
•
739
DAß
Area
Aged
Market sampling
Nr 01' fish
Market sampling
Nr of tish
Research vessels
Nr of fish
Nr samp.
Meas.
1991
SOLE
Research vessels
Nr of tish
Area
F.R.G.
1991
HAKE
Research vessels
Nr 01' l1sh
Aged
OLher
Nr samp.
Meas.
Aged
•
SAMPLING DATAFOR:
13 -
Arca
Scason
Nr samp.
IVa
1
2
92)
332)
49
177
IVb
1
1
1
2
2
2
2
3
3
3
3
4
4
4
1022)
74)
485)
1302)
1233)
624)
136)
892)
773)
914)
466)
262)
723)
334)
1 760
935
2 039
447
4367
5590
778
528
2 005
7971
4284
803
3202
2518
IVc
1
3
122)
102)
439
15
VIa
1
172)
194
VIIb,c
1
32)
20
VIIe
1
22)
3
VIh·k
1
12)
1
SAMPLING DATA FOR:
Mcas.
Agcd
Market sampling
Nr 01' fish
Othcr
Nr samp.
IVb
1
1
2
2
2
3
3
3
4
4
202)
74)
873)
474)
26)
243)
524)
76)
493)
194)
101
47
777
296
95
47
278
854
211
133
IVc
1
22)
13
•
Nr samp.
SAMPLING DATA FOR:
Season
XIV
3
4
Market sampling
Nr 01' fish
I
12)
Other
Nr samp.
I
79
Othcr
Meas.
I
I
Nr sfnP'
I
Agcd
F.R.G.
1991
GREENLAND HALIßUT
I Nr samp. 1las. Agcd
I
Agcd
Research vessels
Nr 01' tish
I
I
Area
Meas.
Agcd
F.R.G.
1991
FLOUNDER
Scason
Mcas.
I
Research vessels
Nr of fish
Arca
F.R.G.
1991
PLAICE
Research vessels
Nr 01' fish
Market sampling
Nr 01' fish
I
Mcas.
2
I
Agcd
I
534
SAMPLING DATA FüR:
14 -
Market sampling
Nr 01' fish
Research vessels
Nr 01' fish
Area
Season
IVb
2
2
3
3
4
4
Nr samp. M ·as.Agcd
154)
556)
24)
206)
23)
24)
SAMPLING DATA FüR'
Other
28
182
2
50
2
2
Nr s'fnP.
Meas.
Season
Ha
2
4
XIV
1
2
3
4
Nr samp.
Market sampling
Nr of fish
3 1)
82)
282)
412)
Other
Agcd
2 202
2 156
3473
Vb
1
2
61)
1
2
2
3
4
301)
122)
372)
142)
XIV
Nr samp.
Meas.
Agcd
3
1 596
307
1
482
600
552
Meas.
Agcd
Market sampling
Nr of tish
Other
2433
13
4
8
1
373
839
680
675
•
FRG
.
1991
Research vessels
Nr of fish
Season
Nr samp.
1 183
SAMPLING DATA FüR' S ebastes mentella
Area
FRG
1991
S ebastes marinus
Meas.
Agcd
42
Research vessels
Nr 01' fish
Area
F.R.G.
1991
TURBOT
694
308
633
169
Nr samp.
Meas.
Agcd
2
1
1 145
447
320
100
1
392
2
755
150
Notes to tables:
•
1) Sampies taken on board of commercial trawler
2) Groundfish surveys
3) Young Fish and Brovm Shrimp Survcy
4) Shrimp by-catch invcstigations
5) Brovm shrimp bcamtrawl survey
6) Sole beamtrawl survey
FINLAND
(E. Ara)
No work was carried out on demersal fishcs other than that reportcd to the Baltic Fish Committec.
- 15 -
FRANCE
(A.Souplet)
SAMPLING DATAFOR:
1991
COD
Nr 01' sampIes
Area
Season
IVa
Res. vessels
l\larket
Mcasured
Aged
1
52
252
-
IVb
1
54
380
148
IVc
1
1
11
-
VIa
1
2
3
4
-
VIId
4
10
SAMPLING DATAFOR:
53
974
59
40
38
31
20
24
979
581
292
482
275
218
138
189
-
10
10
Area
Season
IVa
-
1991
HADDOCK
Nr 01' sampIes
FRANCE
Nr offish
Res. vessels
Market
Measured
Aged
1
52
990
-
IVb
1
19
-
5337
565
VIa
1
2
3
4
-
10
5
18
25
569
266
1 347
1 289
-
-
-
.
SAMPLING DATA FOR'
1991
SAITHE
Nr 01' sarnples
•
FRANCE
Nr 01' fish
F'RANCE
Nr o1'fish
Res. vessels
Market
Measured
1
52
-
774
VIa
1
2
3
4
-
55
56
61
50
1 921
1 857
2001
1 723
412
402
413
292
VIIg,h ,I
4
-
26
-
Area
Season
IVa
11
SAMPLING DATAFOR'
1991
POLLACK
Season
VII
1
2
VIIe
1
2
3
4
FRANCE
Nr 01' fish
Nr of sampIes
Arca
Aged
Res. vesscls
Market
Mcasured
Aged
-
x
x
350
220
175
110
15
12
9
7
958
1 354
685
463
-
-
-
16 -
1990
BIß
Nr 01' sampies
SAMPLlNG DATAFOR:
FRANCE
Nr of fish
Res. vessels
Market
Measured
Aged
1
31
227
IVc
1
4
9
39
-
-
VlId
1
2
3
4
4
17
Area
Season
IVb
-
SAMPLlNG DATAFOR:
-
1 154
474
7
12
7
8
751
1 331
1 285
867
2212
-
I
Measured
Aged
- I
8 256
62
Res. vessels
IVb
1
I
15
SAMPLlNG DATA FOR:
Market
1991
HAKE
Nr of sampies
VII
VlIe,r
VIII
Res. vessels
Measured
Aged
8
-
11
310
479
-
-
516
501
769
207
-
1
2
3
4
-
11
15
22
3
1
2
3
4
-
3
2
3
3
624
220
230
1 655
-
64
44
-
33
2 199
3 139
1 828
5 885
2349
2792
3540
2869
1
1
2
2
3
3
4
4
Season
VIa
1
2
-
39
-
44
55
-
66
-
35
SAMPLING DATA FOR:
FRANCE
Nr of fish
Market
-
2
4
Arca
FRANCE
Nr of fish
I
I
VI
-
492
1991
NORWAY POUT
Season
Season
571
385
107
I Nr of sampies
Area
Area
-
-
-
180
-
-
260
-
274
FRANCE
Nr of sampies
I
Res. vcssels
Market
I
Measured
Aged
-
8
24
I
123
383
66
201
-
•
233
1991
BLUE LING
•
Nr offish
- 17 SAMPLlNG DATA FÜR:
1991
LING
Nr of sampies
Area
Season
VIa
1
2
3
4
VHe
1
2
3
4
VII+VIH
1
2
3
4
Res. vessels
Market
Measurcd
Agcd
-
3
3
3
3
605
687
438
445
202
216
183
127
10
11
5
6
500
572
343
373
-
12
8
12
12
508
439
521
928
268
273
285
346
29
-
SAMPLlNG DATA FÜR:
1991
MEGRIl\1
Nr of sampies
Arca
Season
VIA
4
VHg,h
1
2
3
4
1
2
3
4
VIlla
Market
Measurcd
Agcd
-
1
423
-
17
12
12
14
4392
3513
3388
2 665
-
-
1
10
9
1
157
2 007
2599
169
I Nr of sampies
I
Season
VIII
3
I
Res. vessels
Market
I
-
55
SAMPLING DATA FÜR'. RED GURNARD
-
FRANCE
Nr offish
I
Measurcd
Agcd
I
639
-
1991
FRANCE
Nr offish
Nr of sampies
Res. vcssc1s
Markct
Mcasurcd
Agcd
4
24
-
241
-
1
2
3
4
4
-
16
6
10
7
1 776
977
1 043
506
477
212
284
181
220
Arca
Season
IVc
Vlld
-
48
SAMPLING DATA FÜR:
Season
1
2
3
4
-
1991
nA S S
I Nr of sampies
VHe
-
1991
ALßACORE
Area
Area
FRANCE
Nr offish
Res. vessels
SAMPLING DATA FÜR:
•
FRANCE
Nr of fish
FRANCE
Nr 01' fish
Res. vessels
Markct
Mcasurcd
Agcd
-
8
6
8
5
359
151
327
48
-
-
SAMPLING DATA FOR:
18 -
1991
CUCKOO RAY
Area
Season
VHh
1
2
3
4
Res. vesscls
Markct
Mcasurcd
Agcd
-
9
9
7
9
1 320
1 172
810
1 174
-
-
SAMPLING DATA FOR:
Season
IVb
IVc
VlId
-
1991
PLAICE
FRANCE
Nr offish
Nr of sampIes
Area
FRANCE
Nr of fish
Nr of sampies
Res. vesscls
Market
f..leasurcd
Agcd
1
62
765
324
1
2
3
4
4
12
-
111
86
454
45
527
98
1 815
1 422
711
131
1 037
289
283
308
101
131
1
2
3
4
4
-
3
10
1
44
-
-
-
25
18
23
-
16
-
27
SAMPLING DATA FOR'
Season
VHe
1
2
3
4
Markct
Measurcd
Agcd
-
9
10
10
6
52
280
275
21
-
-
VlId
1
2
3
4
Market
Measurcd
Agcd
-
13
10
11
6
335
415
310
112
-
-
IVb
FRANCE
Nr 01' fish
Res. vcssels
Market
Measurcd
Agcd
1
65
-
6 637
452
IVc
1
4
12
5
-
1 026
353
361
179
VlId
1
2
-
28
10
10
-
16
1 841
1 092
762
1 631
906
246
176
102
337
79
3
4
4
61
-
•
-
1991
DAß
Nr of sampies
Season
FRANCE
Nr of fish
Res. vcssels
SAMPLING DATA FOR:
Arca
-
1991
DRILL
Nr of sampies
Season
FRANCE
Nr offish
Res. vessels
SAMPLING DATA FOR:
Arca
22
1991
TURßOT
Nr of sampies
Area
-
-
SAMPLING DATA FÜR:
19 -
1991
LEMON SOLE
Nr of sampies
Area
Season
IVb
Res. vessels
Market
Measured
Aged
1
30
147
43
IVc
1
4
5
2
-
66
3
52
2
VIId
4
5
-
24
19
SAMPLING DATA FÜR'
1991
SOLE
Nr of sampies
Season
IVc
1
1
2
3
4
4
19
-
11
4
11
1
2
3
4
4
9
-
-
45
54
21
1
2
3
4
-
VIIe
VIII
Res. vessels
Market
Measured
Aged
-
45
771
300
711
24
805
-
-
28
1 898
1 788
1 144
9
1 357
238
250
177
9
144
4
10
7
13
41
533
885
694
-
40
2901
387
2802
513
2314
302
2571
1 014
8
-
11
-
-
-
-
1
1
2
2
3
3
4
4
39
-
32
44
-
30
-
38
-
37
-
32
SAMPLING DATA FÜR:
RED MULLET
Market
Measured
-
8
309
VIII
1
1
22
2
2
38
3
3
4
4
-
6
-
26
-
220
-
279
-
103
-
300
FRANCE
Nr offish
Res. vessels
Season
-
1991
Nr of sampies
Area
FRANCE
Nr offish
Area
VIId
•
FRANCE
Nr offish
8
2
9
-
72
468
198
93
35
552
256
Agcd
-
-
- 20 SAMPLING DATA FÜR:
ROUNDNOSE GRENADIER 1991
Nr of sampIes
Area
VI
Season
Res. vessels
Market
Measurcd
Agcd
-
x
x
x
x
140
135
130
140
140
135
130
140
1
2
3
4
SAMPLING DATA FÜR:
WUITE ANGLER*
Nr of sampIes
Area
Season
VIII
1
1
2
2
3
3
4
4
VIIe
VII+ VIII
FRANCE
Nr offish
1991
Nr offish
Res. vessels
Market
Measurcd
-
11
-
18
-
22
222
34
106
14
246
12
209
23
-
18
-
13
-
10
1
2
3
4
-
16
11
-
-
11
9
12
5
-
1
2
3
4
x
x
x
x
x
x
x
x
FRANCE
Aged
-
34
-
14
-
12
-
23
-
1 134
919
793
-
-
4040
2780
2 690
3 400
245
250
260
250
*LoVJlUS
/""
.
PlScatOrlUS
SAMPLING DATA FÜR:
BLACK ANGLER*
Nr of sampIes
Arca
Season
VIIe
1
2
3
4
VIII
VII+VIII
1
1
2
2
3
3
4
4
1
2
3
4
*Lovhius budegassa
1991
Nr offish
FRANCE
Res. vessels
Market
Measurcd
Aged
-
-
2
5
58
23
-
-
2
2
4
2
-
10
14
170
180
175
170
10
-
20
3
-
21
3
153
14
339
10
284
4
x
x
x
x
x
x
x
x
4550
4 890
4 690
4640
3
-
8
14
-
15
-
3
-
10
-
4
•
- 21 SAMPLlNG DATA FOR:
1991
Nr offish
NEPHROPS
Nr of sampIes
Area
VIIg,h
VIII
VIlla
Season
1
2
3
4
Res. vessels
Market
-
9
9
9
9
1
1
1
1
-
4
-
5
-
Measurcd
475
478
305
446
-
4
-
5
-
480
1 329
705
3 007
619
2729
563
2 059
-
58
55
52
58
3 128
2630
2755
2478
1
1
2
2
3
3
4
4
32
26
1
2
3
4
21
29
-
-
FRANCE
Agcd
-
-
- 22 -
ICELAND
(S.A.Schopka)
The biological sampling programme and research work on demersal fish was carried out along the same
lines as in previous years and is thus based both on research vessel data and market sampies.
The greatest part of the research vessel data was collccted during the annual groundfish survey in March. The
survey is carried out simultaneously with five commercial stern trawlers of the same type covering the
whole shelf area around Iceland with some 600 trawling stations.
.Market sampies were collccted at the headquarters of the Marine Research Institute in Reykjavik and the five
branches of MRI located at other important fishing ports. Fishery inspectors collected a considerable
amount of data both on board of commercial fishing vessels and at the landing places.
Emphasis was laid on assessment work, as usual, and steps were taken to increase sludies on species
interactions.
The number of fish sampled by species are shown in the following tables
SAMPLING DATAFOR:
1991
Nr of fish
eOD
Nr of sampies
Area
Va
Season
Res. vessels
1
Market
Measurcd
Agcd
17
70910
10 876
23 308
7 081
49 080
1 484
20 951
1 314
5 057
4460
1 614
2928
1 849
640
1 062
914
188
185 004
18 524
1 272
93
2
281
62
3
286
4
217
16
Total
2056
SAMPLING DATA FOR:
1991
Nr of fish
HADDOCK
Nr of sampies
Area
Va
Season
1
Res. vessels
Market
Mcasurcd
Agcd
3085
901
1 090
493
1 667
300
1 160
2
69442
2 187
35 039
2 140
17 398
1 643
18 610
687
46
147 146
8 696
926
20
2
172
13
3
97
4
127
11
Total
1 322
ICELAND
Taggcd
1 278
1 278
ICELAND
•
SAMPLING DATA FüR:
23 -
1991
SAITIIE
Nr of sampIes
Area
Season
Va
I
Res. vessels
Market
Measurcd
Agcd
4
7404
5047
1 799
1464
2620
1 495
4 935
394
801
1 501
273
500
274
300
660
100
67
25 158
4409
345
39
2
56
3
19
4
56
14
10
476
Total
SAMPLING DATA FüR:
1991
LING
Nr of sampIes
I
Res. vessels
I
Area
Season
Va
1
2
132
10
Total
142
Market
II
Measured
Agcd
326
17
143
343
143
Nr of sampIes
Va
Season
Res. vessels
Market
Measurcd
Agcd
59
4
2
353
4
2
110
Total
65
359
110
1991
Nr of sampIes
Va
•
ICELAND
1
2
4
Season
Res. vessels
1
2
2
3
4
4
294
17
Total
321
Measurcd
Agcd
847
2
1
1
1 298
28
420
240
19
209
4
2 214
847
10
Va
1
Res. vessels
Market
3
4
Total
Measurcd
29
77 928
8
5
95
Countcd
ICELAND
Nr offish
10
76
719
1991
62303
1 442
5036·
2013
1 658
2871
2605
548
6
2
ICELAND
Market
Sebastes marinus
Nr of sampIes
Season
Counted
Nr offish
SAMPLING DATA FüR'
Area
Counted
Nr offish
SAMPLING DATA FüR: TUSK
Area
ICELAND
Nr offish
1991
SAMPLING DATA FüR: BLUE LING
Area
ICELAND
Nr offish
Agcd
182
409
166
480
1 237
- 24 -
.
SAMPLING DATAFOR'
1991
Nr offish
Sebastes mentella
Nr of sampies
Area
Season
Va
1
Res. vessels
Market
Measurcd
3
2834
333
2 247
567
3
1 183
405
98
7572
34
1
2
20
4
1
3
4
5
Total
59
SAMPLING DATAFOR'. PLAICE
Res. vesse1s
Area
Season
Va
1
3
4
195
Total
195
SAMPLING DATA FOR:
Season
Va
1
10
3
5 021
1 816
552
856
1 085
227
12
7389
2 168
1991
Nr of fish
Market
Season
Va
1
2
4
Total
Measurcd
GREAT. SILVERSl\1ELT
Res. vessels
SAMPLING DATAFOR:
Market
1991
Nr of fish
Agcd
57
13
2
2574
890
3
235
72
3467
235
1991
Nr of fish
CATFISH
Nr of sampies
Res. vessels
Season
Va
1
2
4
481
Total
513
Market
Measurcd
Agcd
18 353
2006
100
1
1
LUl\1PSUCKER
Nr of sampies
Res. vcsse1s
Area
Season
Va
1
2
200
Total
200
ICELAND
ICELAND
Counted
229
32
SAMPLING DATA FOR:
ICELAND
Agcd
Measurcd
Area
ICELAND
4 220
Nr of sampies
Area
226
Agcd
145
SAMPLINGDATAFOR:
126
Measurcd
DAn
Res. vesse1s
100
Market
Nr of sampies
Area
Agcd
1991
Nr offish
Nr of sampies
ICELAND
18 582
2 106
1991
Nr 01' fish
Market
Measurcd
56
639
3400
56
4 039
Aged
ICELAND
Counted
•
- 25 SAMPLING DATA FOR:
1991
WITCH
Area
Va
Res. vessels
Season
Measured
Aged
13
1 472
141
86
595
200
14
2294
200
Market
203
1
1
13
2
4
216
Total
SAMPLING DATAFOR:
GREENLAND HALIßUT
1991
Nr of sampies
Area
Va
Res. vessels
Season
•
Aged
1
9
695
1 715
8 100
4 499
50
1 415
IOD
1 113
709
50
140
54
16 475
2112
147
4
207
Total
SAMPLING DATA FOR:
1991
HALIßUT
•
Season
I
Res. vessels
Va
1
I
1
Market
ICELAND
Nr offish
I Nr of sampies
Area
ICELAND
Measured
Market
6
38
2
3
Counted
Nr of fish
60
1
ICELAND
Nr offish
Nr of sampies
Measured
Aged
105
214
- 26 -
IRELAND
(E. Fahy)
In 1991 [our young fish surveys were undertaken:
- The lrish Seajuvenile plaice survey (MFV Sealgair, ICES division VIIa).
-111e lrish Sea young fish survey (RV Lough Beitra, ICES division VIIa).
- The South coast young fish survey (RV Lough Beltra, ICES division VIIg).
- The \Vest Coast young fish survey (RV Lough Foyle, ICES division Via and VIIb).
SAMPLING DATA FüR:
1991
COD
IRELAND
Nr 01' tish
I
Arca
Scason
Nr sampIes
Agcd
Mcas.only
VIa
1/4
-
674
4 937
VIIa
1/4
1 224
2783
VIIb
1/4
-
2 Q.t9
VII~
1/4
-
290
1 485
VII.!
1/4
-
-
2210
SAMPLING DATA FüR:
1991
HADDOCK
IRELAND
Nr 01' ilsh
I
Arca
Scason
Nr sampIes
Agcd
Mcas.only
VIa
1/4
-
1 583
13 035
VIb
1/4
-
140
288
VIIb
1/4
-
-
1 492
1991
Nr 01' tish
SAMPLING DATA FüR:
\VIIITING
Arca
Scason
Nr sampIes
Agcd
VIa
1/4
-
1277
21 503
VIIa
1/4
-
2958
20 147
VIIb
1/4
-
105
9 084
VIII!
1/4
-
554
9 139
I
SAMPLING DATA FüR:
I
Scason
Nr sampIes
VIa
1/4
VIIb
1/4
-
VIIg
1/4
VIIj
1/4
-
Wcighcd
1991
Nr 01' 11sh
HAKE
Arca
•
IRELAND
Mcas. only
IRELAND
I
I
Agcd
-
736
I
40
1 006
I
185
1 267
I
857
4 893
Wcighcd
Mcas.only
•
- 27 SAMPLING DATA FüR'
I
Arca
Scason
Nr samplcs
VIa
1/4
VIIa
1/4
VIIb
1/4
VIIg
1/4
VIII
1/4
-
SAMPLING DATA FüR:
PLAICE
I
IRELAND
Nr of fish
Agcd
Weighcd
Mcas.only
-
393
612
1 645
-
245
83
654
-
846
1991
IRELAND
Nr offish
Arca
Scason
Nr sampIes
Agcd
VIa
1/4
507
4011
VIIa
1/4
2767
7303
VIIb
1/4
-
9 016
VIIg
1/4
403
5 654
VIII
1/4
-
-
1 358
SAMPLING DATA FüR:
Arca
Scason
Total nr
Nr samplcs
VIa
1/4
VIIb
1/4
VIIg
1/4
VIII
1/4
-
Arca
Season
Total nr
VIII
1/4
Nr samplcs
.
Agcd
Arca
Season
Nr samplcs
VIa
1/4
VIIb
1/4
VIIg
1/4
VIII
1/4
-
IRELAND
Weighcd
Mcas.only
-
5090
69
4300
992
3785
1 735
1991
lRELAND
Nr of fish
Agcd
Weighed
67
Meas.only
129
1991
SAMPLING DATA FüR' LOlJhius buder:.assa
I
Mcas.only
Nr of fish
SAMPLING DATA FüR'. FOUR SPOT I\1EGRII\1
I
Weighcd
1991
MEGRII\1
I
•
1991
SOLE
lRELAND
Nr of fish
Agcd
Meas.only
-
768
1 254
1 124
2341
823
- 28 SAMPLING DATA FOR'
1991
LO/lhius /liscatorius
I RELAN0
Nr 01' fish
I
Area
Season
Ne sampIes
I
Agcd
Meas.only
VIa
1/4
I
-
933
VIIb
1/4
-
-
697
VIIg
1/4
I
I
-
2 121
VIII
1/4
I
2213
2011
-
THE NETHERLANDS
(p. van Beek)
In 1991 the market sampling of landings of the Dutch fleet from the North Sea in The Netherlands was
continued for the following specks: cod (Gadus worhua), plaice (Cleuronectes o!atessa), sole (Solea so!ea).
whiting (Mer!angius werlangusJ and the greater silver smelt (Argentina silus). Market sampling for brill
(Scovhthalwus rhowbus), and turbot (Scoohthalwus waxiwus) was not continued. For all species sam pies
were laken stratified by harbour. All sampies were also stratified by market category. The tables below
indicate the level of sampling.
In each quarter surveys were carried out with R.V. "Tridens" (13 weeks) and R.V. "Isis" (10 wecks) in the
southcrn and central North Sca with the standard GOV trawl in the framework of the Intcrnational BoHom
Trawl Survey (lBTS) program. These surveys are also a continuation of the International Young Fish
Survey (lYFS) and the Dutch Groundfish Survey (DGS). During the trips stomachs were sampled for the
mullispccics program (1991 was the year of the stornach). During the surveys 857 adult plaice were tagged
with a yellow Peterson tag (codes: YMN 8291-9148) and injected with tetracycline.
In the second quarter R.V. "Tridens" (I weck) carried out a survey off the coast of Jutland with the IYGPT
on juvenile pclagic gadoids.
An international egg survey in the period April-July on sole and horse mackercl was carried out by R.V.
"Isis" (9 wecks) and R.V. "Tridens" (3 wecks) in the southern North Sca and English Channel. The other
countries participating in this survey are Germany and the U.K. The aim of these surveys is to estimate the
egg production and stock size of these species in this area.
In September-October a SNS survey (Sole Net Survey) was carried out by R.V. "Tridens" (3 wecks). This
survey provides recruitment indices for 1- and 2-ycar old plaice and sole.
In August-September the International Beam Trawl Survey (BTS) was carried out by R.V. "Isis" (4 weeks)
in the southern North Sea and in the English Channel in collaboration with Belgium Germany and the U.K
in order to investigate the abundance and distribution of adult plaice and sole in this area.
In September-Oclober R.V. "Isis" (4 weeks), R.V. "Slern" (3 weeks) and R.V. "Schollevaar" (2 weeks)
participated in the Demersal Young Fish Surveys (DYFS). These surveys estimate the relative abundance of
brown shrimp (Crangon crangon) and juvenile plaice and sole in the continental nursery areas. The surveys
are carried out since 1969 in collaboration with Belgium and the Federal Republic of Germany.
•
-
SAMPLING DATAFOR:
29 -
1991
eOD
Market
Area*
NRFA 1
Season
THE NETHERLANDS
Research vessels
Measured
Aged
Aged
1
3
-
-
-
55
2
3
4
.
-
1
2
3
-
2
4
92
-
137
99
36
-
-
33
13
80
-
-
24
4
1
2
3
4
141
470
50
50
51
-
24
49
-
4
NRFA 6
1
2
3
4
1 995
700
751
1 586
495
140
284
415
404
614
30
303
NRFA 7
2
3
4
61
-
-
-
-
123
93
18
5754
1 435
2235
NRFA 2
NRFA 3
NRFA 4
NRFA 5
Total
1/4
-
-
-
(*) North Sea Roundfish Sampling Areas
SAMPLING DATA FOR:
1991
SILVER SMELT
•
THE NETHERLANDS
Research vessels
Market
I
Aged
Measured
Aged
2
325
325
VIIc
2
44
25
-
Total
1/4
369
350
-
Area
Season
VIa
SAMPLING DATA FOR:
1991
HADDOCK
Season
NRFA 1
1
3
l'\RFA 2
2
3
4
l'\RFA 3
1
2
3
NRFA 4
2
4
NRFA 6
2
3
4
NRFA 7
Total
2
3
1/4
SAMPLING DATA FOR:
}"Ieasurcd
Agcd
Season
NRFA 1
1
3
NRFA 2
2
3
4
197
208
-
-
146
180
83
-
-
182
114
146
-
155
4
-
-
-
-
7
1
23
-
-
NORWAY POUT
94
150
1 690
1991
THE NETHERLANDS
Aged
Agcd
-
-
60
47
-
-
30
45
15
25
34
34
-
-
-
-
391
1
2
3
NRFA 4
1
3
NRFA 6
4
-
l'\RFA 7
3
1/4
(*) North Sea Roundfish Sampling Arcas
•
Research vessels
Measured
NRFA 3
Total
Agcd
-
-
Market
Area *
THE NETHERLANDS
Research vessels
Market
Area*
30 -
51
14
16
20
•
SAMPLING DATA FOR:
1991
WHITING
Market
Area*
NRFA 1
1
3
NRFA 2
2
3
4
NRFA 3
1
2
3
NRFA 4
2
3
4
NRFA 5
•
Season
THE NETHERLANDS
Research vessels
Measured
Aged
Aged
79
50
116
125
-
-
-
-
141
115
100
-
-
-
96
71
79
-
-
123
141
158
-
1
2
3
4
532
40
-
133
94
70
50
NRFA 6
1
2
3
4
2258
1 612
1 984
2743
200
100
375
300
417
495
152
589
NRFA 7
2
3
4
230
-
-
-
111
129
130
9469
1 175
3530
Total
1/4
SAMPLING DATA FOR:
-
150
1991
SAITHE
Market
Area*
•
31 -
Season
NRFA 1
1
3
NRFA 2
2
3
NRFA 3
1
NRFA 6
3
NRFA 7
3
Total
1/4
Measured
-
-
* North Sea Roundfish Sampling Areas
THE NETHERLANDS
Research vessels
Aged
Aged
-
24
143
-
7
1
2
1
1
179
- 32 -
SAMPLING DATA FOR:
1991
PLAICE
Market
Area
Season
nIE NETIlERLANDS
Research vessels
Measured
Aged
Aged
-
-
-
1
2
3
4
-
-
1 496
1 080
1 080
1 062
541
1 326
Waddensea 4
-
-
224
3
-
-
151
1/4
-
4718
2242
IV
Zeeland
estuary
Total
SAMPLING DATA FOR:
1991
SOLE
Market
Area
Season
1
2
3
4
IV
Aged
Aged
-
850
1 397
844
500
-
342
815
-
61
-
77
Waddensea 4
3
-
1/4
-
Total
SAMPLING DATA FOR:
Research vessels
Measured
-
Zeeland
estuary
3 591
Season
IV
1
2
3
4
Aged
Aged
-
-
-
Waddensea
-
Zeeland
estuary
-
-
1/4
-
Total
llIE NETHERLANDS
Research vessels
Measured
-
•
1 295
1991
TURBOT
Market
Area
n-IE NETHERLANDS
-
180
216
-
-
-
396
•
- 33 -
SAMPLING DATA FüR:
1991
BRILL
Market
Area
Waddensea
Zeeland
estuary
Total
Research vessels
Measured
Aged
Aged
1
2
3
4
-
-
-
-
-
1/4
-
- I
Season
IV
SAMPLING DATA FüR:
157
THE NETHERLANDS
Research vessels
Measured
Aged
Aged
-
311
Waddensea 4
-
-
47
3
-
-
28
1/4
-
-
1 008
Area
IV
Season
2
3
4
Zeeland
estuary
Total
SAMPLING DATA FüR:
IV
Season
1
2
3
4
-
3
-
Waddensea 4
-
Zeeland
estuary
Total
1/4
-
622
1991
FLOUNDER
Measured
-
-
THE NETHERLANDS
Research vessels
Market
Area
•
75
82
1991
DAß
Market
•
THE NETHERLANDS
Aged
Aged
-
-
-
86
133
37
91
347
-
34
-
NORWAY
(TJakobsen & O.M.Smedstad)
Sub-areas I und U,
Routine research surveys were carried out as in previous years, accounting for most of the activity at sea.
The experiment to use eommercial trawlers for a bottom trawl survey in the Barents Sen/Svalbard area was
continued with five trawlers for two wecks. Stornach sampling for multispecies research was carried out
during routine survcys throughout most of thc year. Investigations on cod and haddock spawning (eggs,
larvac) were combincd with other surveys,
The abundance of cod, haddock and redfish in the Barcnts Sca was investigated during a combincd acoustic
and stratified bottom trawl survey in February-March, The distribution and abundance of spawning cod was
investigated by acoustic surveys in the Lofoten area in February-March. Combined with shrimp
investigations, the distribution of young cod and haddock was studicd in the central Barents Sea in MayJune. The distribution of shrimp, cod, haddock, redfish, and Greenland halibut was investigated in the
Svalbard area in September. Part of this survey was included in a combined O-group/multispecies survey
carried out together with U.S,S,R. vessels during the same period, when the distribution of cod, haddock,
rcdfish and pelagic species was investigatcd in the Barcnts Sea, Stornach sampIes from cod and haddock were
collected during all the routine surveys for cod/haddock in the Barents Sea and at Svalbard, and in addition
during shrimp and pelagic fish surveys,
In November, a bottom trawl survey with five commercial trawlers was carried out during two wecks in the
Barents Sea under the supervision of the Institute of Marine Research, The intention is to repeat the survey
for at least two more years. In addition to the abundanee estimation, emphasis was put on comparisons
betwccn commercial trawls and the standard sampling trawl uscd by research vessels,
•
The post-larvae were studicd in July. In August-September the International O-group survey was earricd out
in the Barcnts Sea and adjacent waters in cooperation with U,S,S,R. vesscls.
An O-group (post-Iarvae) survey for saithe was carricd out from 620 N to the Lofoten Islands in May, and an
acoustic survey for saithc and rcdfish was carried out on thc coastal banks from North Cape to 620 N in
Oetober.
Thc sampling programme for commercial catches of cod, haddock, saithc, rcdfish and Grcenland halibut was
eontinucd.
Sub-area IV
Norway participatcd in the quarterly International Bottom Trawl Surveys in thrcc quarters. The International
Young Fish Survey was carricd out in January-February for four wecks. In June, RN "Johan Hjort" carried
out a survey in the northeastern part of thc North Sea for two wecks. In October-November, the distribution
and abundance of demersal and pelagic fish were investigatcd in the northern North Sca during a combined
acoustic and bottom trawl survey. The annual acoustic survey for saithe in the North Sea was carried out in
February, Stornach sampIes were collectcd ouring all surveys. In May, the distribution of saithe post-Iarvae
was studicd. The sampling of commercial catches of saithe, sandeel and Norway pout was continucd.
•
-
35 -
1991
COD
SAMPLING DATA FOR:
Market
Arca
I
lIa
IIb
III
IVa
•
IVb
Samp
Mcasurcd
Fish
18
1507
Season
1
2
3
4
1
2
3
4
1
2
3
4
3
1
2
4
1
2
-
-
33
6
-
SAMPLING DATAFOR'
Samp
Agcd
Fish
10
5
8
8
165
33
31
27
1 050
589
583
605
14 409
3453
1 274
3032
-
-
4385
1 1593
-
-
-
7
-
-
-
-
-
415
-
Samp
330
125
242
450
187
125
116
248
65
72
363
309
10
56
21
44
16
7
NORWAY
Research vessels
Measurcd
Fish
30772
16 901
10584
48432
9383
13722
4 147
21 043
6891
3976
24017
48960
30
454
169
499
246
193
1991
HADDOCK
I
lIa
IIb
III
•
IVa
IVb
Season
1
2
3
4
1
2
3
4
1
2
3
4
4
1
2
4
1
2
Samp
Mcasurcd
Fish
6
55
-
-
9
3
400
352
-
-
-
-
-
-
Samp
Agcd
Fish
5
3
14
5
43
15
24
19
242
244
1272
387
3208
1 329
2076
1425
-
-
-
-
-
-
-
22
20
27
66
20
6
13
5
4
33
22
-
26
19
21
11
5
Agcd
Fish
2651
885
797
1 713
2665
899
165
845
278
221
1 154
1 393
-
348
143
174
126
80
NORWAY
Research vessels
Market
Arca
Samp
72
-
Samp
Measurcd
Fish
304
138
150
302
180
148
113
208
41
55
253
127
32
70
33
80
14
8
23 183
7 182
4 117
18494
11 535
4 515
4950
7001
2808
908
12733
4049
1 600
5 031
2296
6422
816
496
Samp
Agcd
Fish
43
8
9
17
25
8
1 052
145
175
910
849
201
13
3
389
51
9
184
-
-
-
-
16
8
7
6
6
-
410
266
108
133
171
- 36 SAMPLING DATA FOR:
1991
SAITHE
NORWAY
Market
Area
Season
Samp
I
Ha
Hb
IVa
IVb
1
2
3
4
1
2
3
4
1
3
4
1
2
4
1
2
-
1
-
5
7
1
1
-
Measurcd
Fish
237
-
806
1 802
173
123
-
-
-
-
SMIPLING DATAFOR:
Samp
-
1
14
5
21
38
50
32
-
-
Research vessels
Agcd
Fish
-
101
1 229
355
1 151
3432
3 847
2663
-
-
-
GREENLAND IIALIßUT
Samp
Measured
Fish
25
28
14
64
67
179
13
115
2
9
10
20
53
30
3
2
403
793
19
4 253
2 141
6418
23
4726
2
9
10
553
1 213
939
243
109
1991
Season
Samp
I
Ha
IIb
-
1
2
3
4
1
2
3
4
1
2
3
4
Samp
Agcd
Fish
-
-
-
-
-
-
-
-
-
-
-
SAMPLING DATA FOR:
3
1
1
1
-
-
249
73
78
105
-
-
1
70
-
-
-
-
Samp
68
70
28
186
37
37
24
44
34
49
114
154
Measurcd
Fish
521
1 227
152
1 821
1 519
807
736
551
1 385
3 554
4 874
4 414
Season
Samo
I
Ha
I1b
1
2
4
1
2
3
4
1
3
IVa
1
2
4
-
Mcasurcd
Fish
-
-
-
Samo
-
-
3
7
1
111
296
50
25
744
-
-
-
-
-
33
7-1
20
1
204
98
-
-
-
Samp
Agcd
Fish
1
3
34
74
4
2
2
3
2
5
8
21
4
149
39
43
48
60
145
191
700
272
-
1991
TUSK
•
-
NORWAY
Market
Area
-
Research vessels
Measurcd
Fish
-
Agcd
Fish
NORWAY
Market
Area
Samp
Research vessels
Agcd
Fish
-
-
Samp
4
3
10
47
23
10
35
2
6
8
4
7
Measurcd
Fish
4
7
10
209
91
47
125
5
7
21
4
11
Samp
-
-
Agcd
Fish
-
-
-
•
- 37 SAMPLING DATA FOR:
1991
WHITING
NORWAY
Research vessels
Market
Area
Season
Samp
I
Ha
IVa
IVb
-
1
4
1
2
3
4
1
2
4
1
2
-
-
SAMPLING DATAFOR:
Measured
Fish
-
-
-
-
Samp
-
-
Agcd
Fish
-
-
-
Measured
Fish
8
2
Samp
1
6
3
7
26
69
28
56
17
3
1
16
7
25
535
4305
1 681
4392
1 468
249
1991
NORWAY POUT
Season
Samp
I
IIa
IIb
111
IVa
IVb
Vb
•
1
2
3
4
1
2
3
4
1
3
4
1
2
3
4
1
2
2
-
-
.
-
-
Measurcd
Fish
-
-
-
Samp
-
-
.
2
5
4
4
-
-
-
-
Agcd
Fish
-
-
13
9
5
9
3
327
278
90
138
53
-
NORWAY
Research vessels
Market
Area
Samp
Aged
Fish
.
-
-
-
100
300
125
160
-
Samp
Measured
Fish
37
3
7
14
70
40
12
55
2
4
20
66
56
830
143
221
663
2942
1 198
489
2351
60
191
1 200
5 397
2374
51
14
5
1
4 149
1 104
201
120
-
-
Samp
Aged
Fish
-
-
-
-
-
-
-
6
6
186
185
3
1
27
20
-
-
-
-
- 38 SAMPLING DATA FOR:
1991
ßLUE WIIITING
NORWAY
Research vessels
Market
Area
Season
Sarnp
I
Ha
Hb
111
IVa
IVb
Vb
1
2
3
4
1
2
3
4
1
2
3
4
4
1
2
4
1
1
2
-
!\leasured
Fish
-
-
1
-
-
1
6
5
-
SAMPLING DATA FOR:
100
Samp
-
Agcd
Fish
-
-
-
-
1
50
-
-
100
610
243
1
4
5
50
180241
-
-
-
-
-
-
-
-
-
-
Sarnp
Measured
Fish
26
12
8
6
76
58
40
59
8
5
38
2
65
2
3
255
358
504
46
3 657
3 336
2421
1 714
144
28
1 685
82
3250
151
127
1
17
12
1
1 855
1 819
-
I
Ha
Hb
IVa
IVB
Season
-
1
2
3
4
1
2
3
4
1
2
3
4
1
2
4
1
2
-
-
-
-
-
-
-
-
SAMPLING DATA FOR:
-
-
Sarnp
-
-
-
-
Ha
Season
-
-
1
2
4
IIb
IVa
(Vb
3
1
2
4
2
-
-
-
-
Sarnp
-
-
1
100
1
-
-
17
-
-
100
-
100
1 243
840
NORWAY
Measurcd
Sarnp
Fish
155
75
110
52
89
49
38
62
31
36
221
88
70
20
20
14
2
Samp
8 699
2923
3907
3310
3 169
1 637
1 264
872
2062
1 825
11 895
2658
2249
312
563
317
12
1991
LING
Measurcd
Sarnp
Fish
-
88
1 009
12
-
-
-
-
-
-
Research vessels
Agcd
Fish
-
-
Measured
Sarnp
Fish
18
12
11
2
13
7
21
1
Samp
30
17
31
107
25
12
102
-
4
-
-
•
Agcd
Fish
NORWAY
Market
Area
-
Research vessels
Agcd
Fish
-
Agcd
Fish
1
17
2
-
1991
LONG ROUGH DAB
Measurcd
Sarnp
Fish
-
-
Market
Area
Samp
Agcd
Fish
-
-
-
-
•
- 39 SAMPLING DATA FOR:
1991
SILVER SI\1ELT
NORWAY
Research vessels
Market
Area
Season
Sarnp
I
Ha
IIb
III
IVa
Vb
•
1
2
3
4
1
2
3
4
1
3
4
1
2
3
4
1
2
Measured
Fish
-
-
2
2
2
155
200
297
-
5
1
1
-
SAMPLING DATA FOR:
Sarnp
-
1
2
2
-
-
63
1
3
-
Aged
Fish
-
98
198
199
-
Measured
Fish
4
11
Sarno
1
1
3
22
31
10
39
1
2
12
3
18
1
1
16
553
1 648
250
792
4
4
480
10
743
-
-
6
8
408
412
Season
Sarnp
I
Ha
IIb
IVa
IVb
-
3
4
2
3
4
3
1
2
2
SAMPLING DATA FOR:
Measured
Fish
Sarnp
.
-
-
Aged
Fish
-
-
I
•
Ha
IIb
IVa
1
2
3
4
1
2
3
4
1
2
3
4
1
2
Sarnp
Aged
Fish
6
769
1
54
-
-
1
8
5
5
2
.-
-
-
103
714
1260
752
464
-
-
4
8
10
3
1
-
971
-
-
103
-
-
389
391
Sarnp
Measured
Fish
57
2
49
14
1
9
1
18
2
Samp
811
6
218
56
1
22
1
509
117
-
-
-
Aged
Fish
-
-
NORWAY
Research vessels
Measured
Fish
-
-
NORWAY
1991
REDFISII
Sarnp
Season
6
8
Aged
Fish
Research vessels
Market
Area
20
2
-
1991
SANDEEL
Market
Area
Samo
-
163
387
498
148
50
-
Sarnp
Measured
Fish
310
233
92
183
289
253
142
258
74
135
401
120
15
10
14092
9896
3 390
5 195
15 600
10905
7666
5 065
5 040
6045
23315
1 761
71
179
Sarnp
Aged
Fish
9
374
5
1
13
9
1
9
5
175
50
384
209
53
414
145
1
43
-
-
POLAND
(J.Janusz and M.Liwoch)
No biological sampIes were collected in the northeast Atlantic area by Poland.
-
.
.
- 40 -
PORTUGAL
(F.Cardador)
During 1991 the National Institute of Fisheries Research (INIP, Lisbon) has continued its
National Sampling Programme at the main fishing ports. The main objective of this
sampling programme is to provide length frequency distributions of the landings for the
most important commercial species.
INIP has carried out two groundfish surveys on board of the R/V "NORUEGA". These
surveys covered the entire Portuguese coast in depths ranging from 20 to 750 m. The main
goal of these surveys was to provide abundance indices and to study the distribution pattern
of the most important species. The second aim comprised the estimation of the abundance
and distribution of eggs and larvae of the main species associated with basic environmental
parameters.
The surveys took place in summer (July) and in autumn (October/November). The
methodology adopted is a fixed station scheme. Euch survey had a duration of 30 fishing
days, using a bottom trawl net (Norwegian CampeIl Trawl) with 20 mm cod-end mesh
size. Trawl stations were fished during day light, with a mean tow duration of 60 minutes
and a mean trawl speed of 3.5 knots;
•
The following tables present the sampling data collected by INIP for hake (Merluccius
merlllccills), black scabbard fish (AlJhanOQllS carbo), some species of seabreams (Boons
/l.Q.QJM, Pagelllls acarne and Spondyliosoma cantharus), monkfish (LophillS budegassa and
L. niscatorills), and megrim (LepidorJzombus boscii and L. whiffiagonis) ..
SAMPLING DATA FOR:
1991
Nr offish
HAKE
Nr of sampies
Area
Season
Res. vessels
Market
IXa
1
2
3
4
33
22
141
134
253
261
167
206
Total
330
887
Measured
37
28
30
38
675
876
109
618
135 278
PORTUGAL
Aged
•
SAMPLING DATA FOR:
41 -
ßLACK SCABBARD FISII 1991
Nr of sampies
Res. vessels
Market
Measured
1
2
3
4
-
29
36
39
21
3 211
3740
3 191
1 672
Total
-
125
11 814
Area
Season
IXa
Nr of sampies
•
Season
IXa
1
2
3
4
Total
Res. vessc1s
Market
Measured
32
21
44
42
29
28
2061
2 007
2544
2747
53
143
9359
-
Pn~ellus nearne
Nr of sampies
IX
Season
Res. vessels
Market
Measured
-
2648
3330
2410
3771
12 159
1
2
3
4
15
18
39
44
33
37
Total
33
153
-
SAMPLING DATA FOR'
SlJondvliosoma
cantharus
Nr of sampies
Area
IX
•
Season
Market
Measured
-
383
631
488
429
1 931
1
2
3
4
18
8
19
27
20
18
Total
26
84
-
SAMPLING DATA FOR:
Area
Season
IXa
1
2
3
4
Total
Res. vessels
Market
Measured
7
92
91
47
93
1411
996
469
2 149
18
323
5 025
-
11
* LOVhjllS blldegassa & LophillS viscatorillS
PORTUGAL
Aged
1991
Nr of fish
MONKFISII*
Nr of sampies
PORTUGAL
Aged
1991
Nr offish
Res. vessels
PORTUGAL
Aged
1991
Nr of fish
SAMPLING DATA FOR'
Area
Aged
1991
Nr of fish
SAMPLING DATA FOR' B OOlJS boolJS
Area
PORTUGAL
Nr of fish
Aged
PORTUGAL
- 42 SAMPLING DATA FOR:
1991
MEGRIM(*)
Nr of sampIes
Area
Season
IXa
1
2
3
4
47
39
Total
PORTUGAL
Nr offish
Res. vcssels
Market
-
-
-
310
987
86
-
1 297
-
Measured
Aged
-
-
* Lenidorhombus boseii & Lenidorhombus whifjiagonis
•
•
- 43 -
RUSSIA
(V.N.Schleinik)
In 1991, as previously, trawl, trawl-acoustic and ichthyoplankton surveys have been conducted to estimate
abundance and biomass of the main commercial fish species, and the potential recruitment to demersal
commercial fish stocks in the Barents Sea and adjacent waters.
Investigations were continued 10 determine the influence of abiotic and biotic environmental factors on fish
distribution and behaviour. Population structure, dynamics of the biological characteristics, trophic
interrelations between stocks and migration patterns of major commercial fish species were studied.
The tables present the information collected during 1991
SAMPLlNG DATAFOR:
1991
COD
RUSSIA
Nrof fish
Area
•
Season
Measured
Feeding investigations
Aged
-
1
2
3
4
3096
11 166
16778
14 721
325
1 008
1 985
2630
722
501
1 717
I1b
2
3
4
9332
32229
10376
1 207
3 261
1 774
608
1 603
1 141
I1a
1
3
4
14752
11 458
3 518
1 250
1 021
713
963
190
1/4
127 426
15 174
7445
I
Total
SAMPLlNG DATA FOR:
HADDOCK
1991
-
RUSSIA
Nrof fish
Area
I
•
Season
Measured
Feeding investigations
Aged
-
1
2
3
4
905
4 135
17 683
25772
175
136
1 650
2407
136
200
1 999
I1b
2
3
4
1 335
400
7498
202
109
224
268
101
543
Ha
1
2
4
1 823
1434
2570
350
56
754
222
359
1/4
63 555
6603
3828
Total
-
- 44 SAMPLING DATA FüR·
1991
REDFISH
RUSSIA
Nr of fish
Area
I
Hb
Ha
Total
Season
Measured
Feeding investigations
Aged
2
3
4
2995
11
8036
100
100
151
151
2
3
4
18 166
333
2357
2340
360
369
326
1
2
4
3513
4691
4683
629
475
386
300
430
603
1/4
44 785
4 450
2270
SAMPLING DATA FüR·
-
-
GREENLAND HALIßUT
1991
-
-
RUSSIA
Nrof fish
Area
Season
Measured
Feeding investigations
Aged
2
3
4
134
31
819
-
109
25
2
Hb
3
4
689
3736
280
809
336
609
Ha
4
227
18
19
5636
1 132
1 075
I
Total
1/4
SAMPLING DATA FüR:
1991
SAITHE
-
•
RUSSIA
Nr of fish
Area
Season
Measured
Feeding investigations
-
2
3
4
302
1
6
Hb
3
4
1
4
Ha
1
2
4
5
229
10
55-
19
1/4
558
80
19
I
Total
25
Aged
-
-
-
-
•
-
SAMPLING DATA FüR:
Area
I
IIb
Ha
Total
Season
45 -
1991
Nr cf fish
WOLFFISHES
Mcasured
Feeding investigations
RUSSIA
Aged
-
-
2
3
4
6
70
562
13
3
3
4
2054
1 631
110
236
110
4
68
1
1
4391
360
125
1/4
SAMPLING DATA FüR:
LONG ROUGH DAß
1991
11
RUSSIA
Nr cf fish
Area
•
Season
Measured
Feeding investigations
Aged
-
3
4
175
18 321
25
271
221
IIb
2
3
4
192
2049
9334
137
349
50
192
264
100
Ha
1
4
10
1 584
28
12
31 665
860
789
I
Total
1/4
SAMPLING DATA FüR:
PLAICE
-
1991
-
RUSSIA
Nr cf fish
Area
I
Total
•
Season
Measured
I
Feeding invcstigations
Aged
3
4
I
234
1 126
115
382
284
382
1/4
I
1 360
497
666
-
46 -
SPAIN
(P.Pereda)
A groundfish survey has been carried out on board of RN "CORNIDE DE SAAVEDRA" in Seplember and
OClober along the continental shelf of Divisions VIIIc and IXa North to estimate recruitrnent indices,
abundance indices and spatial distribution patterns of the main demersal species. In addition, stomach
sampies of species belonging to the demersal community were collected.
Selectivity experiments have been conducted on board of a commercial vessel in Division VIIIc with the
aim of estimating differences in size composition of the trawl catches using covered 40, 65 and 80 mm
diamond and square mesh codends
The market sampling programme was continued in 1991. The number of fish sampled in Sub-Areas VI and
VII and in Divisions VIIIa,b,c and IXa are given in the tables below.
SAMPLING DATA FOR:
1991
Nr offish
HAKE
Nr of sampIes
Area
Season
Res. vessels
Market
Measured
2
3
4
2
1
1
12
164
71
108
301
VII
1
2
3
4
29
32
34
27
VIIIa,b
1
2
3
4
56
42
62
71
8 071
8323
6779
10 123
VIIIc
1
2
3
4
72
121
92
79
55
8 167
6564
7 508
15 976
20
24
38
38
37
152
853
VI
IXa
Total
I
1
2
3
4
60
7
7
7
5
2
3
11
10
Aged
SPAIN
•
093
759
112
771
026
026
080
049
126 071
•
- 47 SAMPLING DATA FOR'
L . whiffiaeonis
Nr of sampies
Area
Res. vessels
Market
Measured
1
3
4
2
2
3
126
111
163
VII
1
2
3
4
26
36
30
26
5 221
5513
4789
4038
293
143
502
267
VIIIa,b
1
2
3
4
27
22
22
30
2064
1 615
1 305
2 067
72
65
36
37
38
35
1 957
1 926
2454
2 228
156
145
253
331
2
43
63
47
1
40
53
17
14
13
17
13
142
429
35 732
2368
IXa
1
2
3
4
60
1
2
3
4
Total
LeDidorhombus bose;;
Nr of sampies
SAMPLING DATA FOR'
Area
•
Season
Res. vessels
66
46
1991
Nr offish
Market
Measured
Aged
VI
1
3
4
2
1
3
21
27
66
VII
1
2
3
4
22
30
23
22
929
853
1 258
1 016
12
17
25
32
VIIIa,b
1
2
3
4
26
21
22
23
149
384
156
293
48
1
2
3
4
17
19
20
18
655
1 036
2581
3462
71
339
291
437
2716
2 147
3 105
2990
63
177
393
20
32
31
34
30
156
396
23 844
2035
VIIIc
IXa
Total
1
2
3
4
76
60
SPAIN
Aged
VI
VIIIc
•
Season
1991
Nr offish
72
58
SPAIN
- 48 SAMPLING DATA FOR'
LOll.hius ll.iscatorius
1991
Nr of sampies
Area
Season
Res. vessels
Market
Measured
VI
1
3
4
2
2
3
85
91
135
VII
1
2
3
4
20
26
25
16
1 329
1 555
1 403
1 106
VIIIa,b
1
2
3
4
12
13
13
14
581
533
514
457
VIIIc
1
2
3
4
25
43
52
45
75
1 318
1 434
1 668
2 105
3
4
5
5
7
73
62
106
92
88
382
14 647
IXa
60
1
2
3
4
Total
SAMPLING DATA FOR'
LQDhiUS bude~assa
Season
VII
Measured
1
2
3
4
20
27
28
20
1 781
1 504
1 375
1 425
VIIIa,b
1
2
3
4
35
33
22
55
1 358
1 462
772
2 015
VIIIc
1
2
3
4
31
32
40
43
35
592
868
821
956
7
6
5
5
7
384
336
265
756
98
413
18 670
Total
1
2
3
4
60
•
SPAIN
Nr of fish
Market
IXa
Res. vessels
Aged
1991
Nr of sampies
Area
SPAIN
Nr of fish
Aged
•
SAMPLING DATA FÜR'
,
Pagellu~
hogaraveo
Nr of sampies
Area
Res. vessels
1991
Nr offish
Market
Measured
VIIla,b
2
3
42
VlIIc
1
2
3
4
27
34
10
6
324
793
139
64
80
1 362
Total
•
Season
49 -
Aged
SPAIN
- 50 -
SWEDEN
(P-O.Larsson)
An IBTS ("Young Fish Survey") was performed in February in Division lIla and the eastern North Sea.
Bottom trawl surveys were also made in Division lIla in the second and third quarter. In a11 surveys,
stornach samples were co11ected according to the special programme for 1991. The number of stomachs
sampled is shown in the fo11owing lable.
Species
Uivision
Cod
Whiting
Haddock
Saithe
Ling
Hake
:\lackerel
Grey gurnard
Long rough dab
Turbot
ßrill
Halibut
Spurdog
Starry ray
Gadus morhua
Merlangius merlangus
Melanogrammus aeglefinus
Pollachius virens
Molva molva
Merluccius merluccius
Scomberscombcr
Eutrigla gurnardus
Hippoglossoides platessoides
Scophlalmus maximus
Scophlalmus rhombus
Hippoglossus hippoglossus
Squalus acanthias
Raia radiala
Februarv
IVa IVb
lIla
Total
40
53
58
1
124
375
50
3
8
1
22
22
2
2
1086 1250
968 1396
302 410
64
65
1
1
27
27
3
4
190 215
54
84
34
36
2
4
27
2
56
Apr
lIla
Sept
lIla
498
304
134
729
639
111
8
4
15
200
1
4
2
87
Some 500 adult plaice were lagged and released in a fjord at the Skagerrak coast (Division lIla), mainly to
study spawning migrations.
A research project was started on recruitment and year dass dimensioning mechanisms in flatfish, mainly
plaice and flounder, in Division lIla. O-group flatfish were sampled from settling onwards in sha110w
nursery arcas.
Numbers of fish sampled for size and age are given in the following lables.
SAMPLlNG DATA FOR:
COD
Nr 01' sampies
Measurcd
Aged
42
40
49
1 884
1744
2772
496
503
485
1
2
59
32
1
11
185
65
Area
Season
lIlA
1
2
3
IVa
IVb
Res. vessels
SAMPLING DATA FOR:
Market
IIADDOCK
Nr of sampies
Area
1991
Nr offish
Season
Res. vessels
Market
1991
Nr 01' fish
I\Ieasurcd
Agcd
1 539
3
42
40
49
2 271
187
134
111
IVa
1
2
324
49
IVb
1
11
429
78
lIlA
1
2
582
SWEDEN
SWEDEN
•
- 51 :SAMPLING DATA FOR:
WHITING
Nr of sampIes
Measured
Aged
42
40
49
3604
3 023
4 080
431
336
294
1
2
121
22
1
11
1 819
135
Area
Season
lIlA
1
2
3
IVa
IVb
Res. vessels
SAMPLINGDATAFOR:
Market
NORWAY POUT
Nr of sampIes
Aged
42
40
49
1 800
1 545
2007
140
1
2
149
12
1
11
245
22
Season
lIlA
1
2
3
IVa
IVb
Res. vessels
1991
Nr offish
Measured
Area
SAMPLING DATA FOR:
Market
PLAICE
Nr of sampIes
•
1991
Nr offish
Area
Season
Res. vessels
lIlA
1
2
3
42
40
49
IVa
1
2
IVb
1
11
Market
SWEDEN
SWEDEN
41
1991
Nr of fish
Measured
Aged
800
890
770
292
340
435
235
37
SWEDEN
- 52 -
UNITED KING DOM (England and Wales)
(C.T.Macer)
The market sampling programme was continued in 1991. Details of number of fish measured and otolithed
are presented in the tables.
The following research vessel eruises took plaee in 1990:
Vessel
Cruise Area
Period
Comment
Cirolana
3
SW Approaches, W Channel 8 Mar-2Apr
Cirolana
Cirolana
5
7
North Sea
North Sea
10 May - 7 Jun
9 Aug - 5 Sep
Cirolana
Corystes
Corystes
9
North Sea
Southem Bight. Channel
lrish Sea, Bristol Channel
23 Oet - 20 Nov
16 - 31 Aug
10 Sep - 1 Oct
8
9
PHH trawl survey (stomaeh sampIes;
juvenile fish)
GOV trawl survey (stomaeh sampIes)
Granton trawl survey (stomaeh
sampIes; Macrobenthos)
GOV trawl survey (stomach sampIes)
Beam trawl survey
Beam trawl survey
PHH = Portuguese High Headline
GOY =Grande Ouverture verticale
SAMPLING DATA FOR'
Area
IVb
IVc
VIa
VIIa
VIIf
VlIe
Season
1
2
3
4
1
2
4
4
1
2
3
4
4
4
Samp
9
14
10
15
9
5
9
4
1
8
9
5
1
3
SPURDOG
Market
Measured
Fish
403
755
452
913
383
278
354
328
98
431
890
416
148
292
1991
Aged
Fish
-
-
-
-
ENGLAND
•
Research vessels
Aged
Fish
-
-
-
•
------------------------------~
-
SAMPLING DATA FOR:
53 -
1991
COD
Market
Area
He
IVa
IVb
IVc
Via
Vlla
Vlld
VIIe
VIIf
VlIg
1
1
2
3
4
1
2
3
4
1
2
3
4
1
2
4
1
2
3
4
1
4
1
2
3
4
1
2
4
1
4
VIIh
VIIJ
•
Samp
Measurcd
Fish
Agcd
Fish
6
3
6
11
2
135
131
133
123
28
26
20
16
2
2
1
14
11
15
21
4
12
10
9
16
9
5
3
10
4
6
778
741
912
1 293
236
18 152
18 956
19 123
17765
3006
1 882
1 540
837
343
344
168
1 297
1 415
2448
2840
191
284
346
347
795
459
301
129
660
305
290
292
75
139
162
34
1 245
1 320
1 303
1453
311
276
250
227
22
50
2
1
111
45
6
43
3
Season
1
2
3
4
1
4
-
1
SAMPLING DATA FOR:
Season
Sam
IVa
IVb
1
2
3
4
1
2
3
4
1
1
4
2
5
10
10
7
28
38
10
-
57
28
-
4
6
66
-
-
29
13
37
5
21
-
-
6
12
3
1991
SAITHE
109
177
686
305
322
535
701
363
-
245
357
141
20
-
Measurcd
Fish
218
253
242
243
168
209
239
43
102
112
58
143
146
37
Market
Area
-
-
-
Agcd
Fish
ENGLAND
Research vessels
Agcd
Fish
ENGLAND
Research vessels
Agcd
Fish
2
99
166
84
4
7
2
- 54 -
SAMPLING DATA FüR·
1991
IIADDOCK
Arca
He
IVa
IVb
VIa
VIb
VlIe
VIIh
Scason
1
1
1
2
3
4
1
2
3
4
4
3
3
1
Sarnp
Mcasurcd
Fish
Agcd
Fish
5
1
1
6
7
2
60
89
76
70
1
1
1
1
546
86
177
595
1 260
479
8808
12021
10882
9 197
133
272
99
53
118
106
SAMPLING DATA FüR'
-
IVa
IVb
IVc
VIa
VIIa
VIId
VIIe
VIIf
VII~
1
2
3
4
1
2
3
4
1
2
3
4
1
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
Sarnp
Measurcd
Fish
1
51
-
47
44
53
51
10
8
10
9
1
17
10
11
17
2
3
3
2
9
10
8
6
7
2
3
8
2
821
625
717
-
517
356
261
-
-
-
-
-
-
1991
WHITING
Season
-
76
119
28
728
896
898
756
Market
Area
ENGLAND
Research vessels
Agcd
Fish
Market
Agcd
Fish
-
-
-
4 162
3 801
4791
4621
483
690
748
651
91
1 728
1 088
1 232
1 788
284
318
266
147
1 134
1 441
1 159
1 119
946
124
347
1 124
241
467
487
561
681
120
117
114
128
-
-
123
-
-
-
-
ENGLAND
Research vessels
Agcd
Fish
-
•
493
507
618
-
781
718
691
-
158
168
105
-
-
78
-
-
•
- 55 SAMPLING DATAFOR'
1991
BLUE WIIITING
Market
Area
IVa
Season
Sarno
Measured
Fish
Aged
Fish
-
-
-
2
SAMPLING DATA FOR:
32
1991
HAKE
Measured
Fish
Aged
Fish
-
17
2
1
6
1
2
3
1
2
1
3
96
207
439
543
643
292
494
513
888
892
1 187
1 728
1 088
1 232
1 788
129
49
730
34
139
207
65
170
41
378
1
1
164
59
Season
Sarnp
VIa
Vlla
Vlle
•
VIIf
Vlld
VlIg
VlIh
Vllj
VIlla
1
2
3
1
2
3
4
1
2
3
4
1
2
3
4
1
2
4
1
2
4
1
2
3
4
1
3
4
1
1
1
2
5
3
2
4
7
10
9
11
17
10
11
-
SAMPLINGDATAFOR:
1
-
28
27
123
78
-
-
Sarnp
IVa
IVb
2
3
4
2
3
4
-
-
-
-
7
23
38
23
55
-
-
81
9
43
55
-
34
98
34
60
-
18
5
18
50
-
Measured
Fish
-
-
-
-
-
1991
NORWAY poul
Season
-
-
Market
Area
ENGLAND
Research vessels
Aged
Fish
Market
Area
ENGLAND
Research vessels
Aged
·Fish
Aged
Fish
-
-
ENGLAND
Research vessels
Aged
Fish
214
244
297
119
95
91
- 56 -
SAMPLING DATAFOR:
LOPIIIUS PISCATORIUS
1991
Market
Arca
Season
Samo
Vlla
VIIe
Vllf
VIIg
VIIh
VIIJ
VIlla
-
3
4
1
4
3
4
1
4
1
4
1
4
1
-
SAMPLING DATAFOR:
Mcasurcd
Fish
Agcd
Fish
-
-
-
-
-
LOPHIUS BUDEGASSA
1991
Season
Samp
VIIg
VIIh
VIIj
-
1
4
1
4
1
4
-
SAMPLING DATA FOR:
Mcasurcd
Fish
Agcd
Fish
-
1991
ANGLER FISII
Market
Arca
VIa
Vlla
Vlld
Vlle
VlIf
VIIg
VIIh
Season
2
4
2
1
2
3
4
1
2
4
1
2
4
1
2
Vllj
Villa
3
4
1
4
1
Measurcd
Fish
120
139
153
1 232
1 262
1474
1449
624
487
338
203
216
151
833
717
5
974
6
905
6
Samp
1
1
1
9
13
14
14
4
4
2
1
2
1
5
-
-
Agcd
Fish
4
1
1
-
2
8
-
16
11
-
24
3
3
ENG LAND
Research vessels
Agcd
Fish
2
3
1
4
10
7
Market
Arca
ENGLAND
Research vcssels
Agcd
Fish
16
4
1
1
10
2
6
16
10
2
14
3
3
ENGLAND
Research vessels
Agcd
Fish
-
-
/
- 57 -
SAMPLING DATAFüR:
1991
PLAICE
Area
IVa
IVb
IVc
VIa
VIIa
VIId
VIIe
Vllf
VIIg
VIIh
VIII
Season
2
3
4
1
2
3
4
2
3
4
1
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
4
1
4
4
Sarnp
Measured
Fish
Aged
Fish
4
7
1
40
39
39
35
895
1 346
168
8459
9 133
8493
6046
120
197
23
899
569
537
605
1
12
10
9
10
11
40
31
36
16
20
21
21
9
4
138
1 727
1 459
1 606
1 743
1 717
5275
2680
3429
2653
3210
2612
2503
1069
540
-
-
1
5
-
4
-
4
-
SAMPLING DATA FüR:
15
165
20
-
275
651
378
55
162
11
-
-
-
-
243
177
469
229
89
440
698
422
304
394
358
520
95
85
466
32
7
16
23
-
64
556
436
266
-
320
-
488
-
-
10
-
122
32
7
-
23
1
5
6
-
5
2
1991
LEl\ION SOLE
Season
Sarnp
VIla
VIId
VIIe
VIIf
VIIg
VlIh
V11.1
VIlla
3
1
1
2
3
4
1
3
4
1
1
3
4
1
1
-
1
11
10
12
8
4
1
3
-
SAMPLING DATA FüR:
Aged
Fish
Measured
Fish
-
Season
Sarno
1
-
108
157
62
163
44
44
11
11
86
21
19
21
68
-
-
107
475
-
-
20
6
1991
SOLE
Measured
Fish
-
-
Market
Area
30
30
148
1 687
1428
1 599
1 028
ENGLAND
Research vessels
Aged
Fish
Market
Area
ENGLAND
Research vessets
Aged
Fish
Market
Aged
Fish
ENGLAND
Research vessels
Aged
Fish
- 58 IVa
IVb
IVc
VIIa
VIId
VIIe
VIIf
VIIg
VIIh
2
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
4
2
3
4
-
-
24
11
9
20
1
15
23
10
7
16
10
13
3292
655
861
2206
52
2661
2707
1 615
670
2566
1 750
1 986
-
83
32
7
18
27
29
18
17
10
-
5
5
1
4
3
6
9
-
4
4
-
-
311
457
90
66
333
569
157
4
744
710
47
239
251
281
445
366
135
358
250
2
-
10411
5 119
1 230
2494
2464
3228
2 123
2254
1 329
-
951
580
254
850
264
823
1 376
381
1
-
-
828
-
59
2
3
-
200
3
2
-
-
7
7
-
119
103
1
1991
MEGRIl\I
SAMPLING DATA FOR:
-
18
638
128
54
382
Market
Area
Season
Sarnp
IVa
VIIa
VlIe
VIIf
VIIg
VIIh
VlIj
VIlla
2
3
1
2
3
4
1
2
4
1
2
4
1
2
3
4
1
4
1
-
-
1
1
-
2
-
1
-
Measurcd
Fish
Agcd
Fish
-
-
-
418
199
143
160
308
-
-
-
SAMPLINGDATAFOR:
164
35
48
38
45
48
121
258
55
162
60
809
99
58
-
IVc
Sarnp
Mcasurcd
Fish
Agcd
Fish
7
8
4
24
80
35
186
247
202
Season
2
3
4
15
3
-
11
45
-
71
171
-
60
934
99
57
1991
BASS
Market
Arca
-
-
232
83
-
3
2
1
1
2
16
1
6
27
6
182
160
ENGLAND
Research vessels
Agcd
Fish
ENG LAND
Research vessels
Agcd
Fish
-
- 59 VIIa
VIId
VIIe
VIIr
VIIg
VIIh
2
3
4
2
3
4
1
2
3
4
1
2
3
4
1
1
2
156
1
32
5
3
5
2
424
97
22
159
2
7
8
8
16
6
3
28
389
51
198
361
100
39
-
-
-
-
-
-
28
111
-
677
369
52
143
177
305
203
5
333
402
56
1
-
1
-
-
-
-
60 -
UNITED KING DOM (Scotland)
(R.Cook)
Monitoring of the main demersal species by Scotland is undertaken through three main
sampling activities. These are market sampling of fish landed by the commercial fishery,
sampling fish caught but discarded at sea and annual trawl surveys by the Department's
research vessels. Most of the data collected are used by the ICES Roundfish \Vorking
Group (RFWG) and Industrial Fisheries \Vorking Group.
During 1991 sampling continued at the same level as in previous years. Port sampies are
stratified by month, gear type and sea area. The numbers of fish sampled in ICES sub-area
IV and Divisions VIa and Vlb are given in the table below.
Species
Cod
lIaddock
Whiting
Saithe
Lemon sole
Plaice
l\1egrim
Angler
Spurdog
Sandeel
North Sea (IV)
agOO
measurcd
61767
11288
120235
11985
95890
6743
17130
6597
2634
27050
28767
3443
1 182
0
792
0
517
0
-
-
West or Scotland (VIa)
measurcd
arol
9638
3431
4142
23875
29320
2990
6381
2388
4453
671
10 519
1219
284
10 595
7290
526
1426
0
696
271
Rockall (VIb
agOO
mcasurcd
349
125
2636
531
-
-
123
60
345
133
0
0
-
-
In 1991, approximately 64 commercial vessels were sampled for discards. Discard
sampling, like port sampling is stratified by gear type and sea area but because of resource
limitations sampling is undertaken on a quarterly basis. Aggregate numbers of fish sampled
are given below:
North
measured
4980
41639
34349
617
Soccies
Cod
lIaddock
Whiting
Saithe
Sea (IV)
West or Scotland (VIa)
aged
measured
244
208
11 735
1098
14298
1380
27
27
aged
1085
2787
2159
274
The following bouom trawl surveys were carried out for groundfish:
Vessel
Arca
Period
Comment
Scotia
Scotia
Scotia
Scotia
Scotia
Clupea
North Sea (IV)
West of ScotIand (VIa)
North Sea (IV)
North Sea (IV)
Rockall (VIb)
ShetIand
February
March
May
August
September
November
lYFS Commitment
Indices uscd by RFWG
Ncw survcy. IBTS commitment
SGFS. indices used by RFWG
Indices used by RFWG
Indices used bv Industrial Fisheries WG
U.S.A
(F.Serchuk and B.Rothschild)
The U.S.A. had no fisheries and no research vessel activity on dcmersal fish in lhc ICES area in 1990
Activitics in the Northwest Allantic have bcen reported lo NAFO.
.