..
u/
C.M. 1987/G.1
Report of Activities
International Council for the
Exploration of the Sea
DEMERSAL FISH COMMITTEE
by
Vaughn Anthony
1986
•
BELGIUM
eR
pe Clerckl
Recording of densltles end growth rates of Lhe 1985 end 1986 yeerclaSS8S of sole, plaice, dab, flounder, cod and wh.lting was carr'ied
out.
Two cru1aas were alao undertaken for the lntarnationel demaraal young
flah aurvey.
Tha groundflsh survay continued in order to eatlmate the stock 81ze
of edult fletfishea 1n the Southern North See by meana of a beemtrawl
f1shery in August.
The market sempling was cont1nued cover'lng cod-Nor.h See. whi tingNorth Sea, haddock-Horth See, plaice end sole-North-See-Eng11ah
Channel-Celtic Sea end Irieh See •
•
-
2
-
-
1986
Year
Spe<>.1es
Are.
Ho
t.lo cr 31.plu
or "... plClll
Se.oon
Re"earch
Sol<
Harket
Hea"ured
Aged
13
1 782
'80
"0
8
8»
1>5
I>
1 166
210
VI! f,g
101
'J8
5J'
58'
210
199
210
"0
VII "
70
562
259
29'
10
2'0
"0
70
VII d,e
23'
391
"0
280
n
13
70
70
12
800
11
1 0110
9
12
595
777
"0
'69
90
150
IV
PI"lee
IV
,"
vn r,g
VII "
VII d,e
CoO
IV
,,
Io'hll1nc
IV
5
12
"
50
'8'
38'
'0
50
"0
90
'0
331
16J
19'
'0
"0
90
50
'0
50
15
50
'0
50
266
)79
"0
875
'J5
180
"0
210
35'
20'
9"
2)6
ISO
"0
110
'88
75
'80
•
13
50
Haddoek
IV
1-'
CANADA
(R. Wells)
Canada had no fisheries and no research activity in the ICES area
in 1986. Activities in the Northwest Atlantic in 1986 have been
reported to NAFO.
•
•
- 3 DENMI\RK
(H. GISLI\SON)
The market sampling progranune was continued in 1986. The number of
market samp1es taken from the fishery for human consumption is given
in the tab1es as the number of boxes each containing approximately 35
kg of fish.
The number of market samples reported for sandeel, Norway pout and
whiting is given as the total number of samples obtained from the
industria1 fishery. Due to the continued refusa1 of the Danish fishermen to al10w biologica1 samp1es to be taken fram the industria1 landings the number of samp1es obtained from this fishery is very low•
•
SAMPLING DATA füR WHITIN:i
IV
IIIa
Season
(quarter)
I
II
III
IV
Research Market
vesse1s samp1es
33
IV
IIIa
Season
(quarter)
I
II
III
IV
I
II
III
IV
Aged
2279
4
1812
717
1421
4
0
706
0
797
13
0
15
13
-
I
II
III
IV
5
5
2
+
Dl\.TA
füR
Research
vesse1s
21
+
+
Racia1
Invest.
II1\DDOCK
No. of samples
Area
Measured
10
40
19
29
+
SAMPLING
•
No. of fish
No. of sampies
Area
No. of fish
Market
samples Measured
Aged
10
17
42
23
1585
683
2278
1587
1348
674
2231
1539
11
299
715
1747
1099
299
712
1496
1099
10
14
10
Racia1
Invest.
-
•
4 _
SAMPLING DATA füR COD
No.
Area
IV
lIla
of samp1es
of fish
No.
Season
(quarter)
Research
vesse1s
Market
samp1es
29
84
77
56
41
1231
1301
1126
915
1229
1044
1123
85
49
40
47
772
1136
1155
1559
770
1135
898
1558·
I
II
III
IV
+
I
II
III
IV
+
Measured
1392
Aged
Racia1
Invest.
•
SAMPLING DATA füR SAI'I'HE
No.
Area
IV
lIla
Season
(quarter)
I
II
III
IV
of samp1es
Research
vesse1s
2
+
I
II
III
IV
of fish
No.
Market
sampies
Measured
Aged
28
19
21
10
551
620
591
144
402
617
551
144
+
+
+
550
701
175
550
699
175
Racia1
Invest.
SAMPLING DATA füR NORWAY roJT
No. of fish
No. of samp1es
Area
IV
lIla
Season
(quarter)
I
II
III
IV
Research Market
samp1es
vesse1s
12
40
IV
708
0
Aged
574
0
+
19
29
397
6701
369
6701
5
5
2
0
+
0
0
I
U
IU
10
Measured
1
252
252
Racial
Invest.
•
- 5 -
SAMPLING DATA FüR SllNDEEL
NO. of samples
Area
IV
•
lIla
Season
(quarter)
I
II
III
IV
I
II
III
IV
No. of fish
Research Marketvessels
samples
7
+
Measured
Aged
10
40
19
29
892
6153
2686
0
562
6153
2464
0
5
5
2
997
90
0
997
0
0
+
Radal
Invest.
SAMPLING DATA FüR PIAICE
No. of samples
Area
IV
Season
(quarter)
I
II
Research
vessels
25
40
III
IV
lIla
•
I
II
III
IV
38
92
Market
samples
ND. of fish
Measured
Aged
15
18
18
15
2199
4687
1538
1172
1338
3443
1526
1163
19
32
38
35
2077
6311
4930
3775
1981
5230
3914
3600
Radal
Invest.
SAMPLING DATA FüR SOLE
No. of samples
Area
IV
Season
(quarter)
Research
vessels
No. of fish
Market
sampIes
Measured
Aged
2
2
2
2
78
257
281
237
77
256
280
237
I
II
III
IV
lIla
I
II
III
IV
Radal
Invest.
.
- 6 -
CE. Aro & V. Sjöb1om)
No work was carried out on demersa1 fish other than that reported
to the Ba1tic Fish Committee.
CA. Forest & A. Soup1et)
I. CAMPAGNES SCIENTIFIQUES A LA HER
Le NIO "THALASSA" a participe, du 11 janvier
au 7 fevrier 1986, au programme International Voung
Fish Survey. 11 a ete effectue 20 stations dans 1a
division IV A, 39 en IV B et 13 en IV C;
•
11. KENSURATIONS ET AGEAGE
Les operations d'echanti11onnage a terre et a
1a mer sont resumee dans les tab1eaux joints.
•
-
7 .•
NB. OF SAMPLES
SPEeIES
SAITHE
AREA SEASON RESEARCH
VESSEL
IV A 1st Q
8
2nd Q
3rd Q
4th Q
•
VI A 1st Q
2nd Q
3rd Q
4th Q
eoo
IV
1st
2nd
3rd
4th
Q
Q
Q
Q
VI A 1st Q
2nd Q
3rd Q
4th Q
74
NB. OF FISH
MARKET MESUREO
SAMPLES
AGEO
OTHER
+
+
+
+
+
+
+
+
378
965
922
335
+
+
+
+
959
1370
1478
810
98
200
314
198
+
+
+
+
+
+
+
+
501
487
520
417
+
+
+
+
412
178
377
573
VII A 1st Q
2nd Q
3rd Q
4th Q
1
97
VII FG 1st Q
5
4B9
87
2nd Q
3rd Q
4th Q
5
3
610
374
lBl
147
+
+
+
+
451
502
158
363
VII 0
•
1st
2nd
3rd
4th
Q
Q
Q
Q
+
+
+
+
-
!sPECIES
HADDOCK
8
-
NB. Of SAMPLES
AREA SEASON RESEARCH MARKET MESURED
VESSEL
SAMPLES
IV
1st
2nd
3rd
4th
Q
Q
Q
Q
54
VI A 1st Q
IV
1st
2nd
3rd
4th
Q
Q
Q
Q
73
AGED
.
.
..
+
+
+
+
+
+
+
+
546
557
1301
888
+
+
+
+
+
+
+
+
.
2nd Q
3rd Q
4th Q
WHITING
NB. Of fISH
--
OTHER
1194
2650
1770
342
3225
3452
4097
452
•
VII A 1st Q
2nd Q
3rd Q
4th Q
1
VII D 1st Q
+
...
+
+
VII fG 1st Q
5
1118
2nd Q
3rd Q
4th Q
4
3
1002
549
29
31
25
29
955
952
737
1056
60
45
67
62
7164
7325
9135
5285
VI+VII 1st Q
2nd Q
3rd Q
4th Q
VIII AB 1st Q
NORWAY POUT
219
150
.
+
+
2nd Q
3rd Q
4th Q
HAKE
1
1
IV A
2nd Q
3rd Q
4th Q
33
37
43
27
1st
16
Q
666
3875
2113
568
451
283
261
113
•
- 9 -
~,
NB. OF SAMPLES
~PECIES
MONKS
(various)
•
SOLE
•
AREA
NB. OF FISH
SEASON RESEARCH MARKET
VESSEL
SAMPLES
MESURED
AGED
VII EF 1st
2nd
3rd
4th
Q
Q
Q
Q
+
+
+
+
255
248
388
353
VII AG 1st
2nd
3rd
4th
Q
Q
Q
+
+
+
+
271
514
1266
1171
VII H+ 1st
VIII A2 2nd
3rd
4th
Q
+
+
+
+
860
1892
1620
1246
VIII Al 1st
2nd
3rd
4th
Q
Q
Q
+
+
+
+
759
1653
1463
1217
31
11
19
20
867
391
1012
718
Q
Q
Q
Q
Q
VIII AB 1st
2nd
3rd
4th
Q
VII D 1st
2nd
3rd
4th
Q
Q
Q
Q
VII E 1st
2nd
3rd
4th
Q
Q
Q
Q
VIII AB 1st
2nd
3rd
4th
Q
Q
Q
Q
23
29
38
21
Q
Q
Q
+
+
+
+
33
34
37
24
-
+
+
+
+
4
3
3
+
+
+
30
32
30
35
2248
2152
1961
2717
OTHER
+
+
+
+
377
148
288
344
- 10 -
NB. OF SAMPLES
~PECIES
PLAICE
MEGRIM
RED MULLET
NEPHROPS
AREA
NB. OF FISH
SEASON RESEARCH MARKET MESURED
VESSEL
SAMPLES
AGED
VII D 1st
2nd
3rd
Q
Q
Q
VII E 1st
Q
2
+
VII GH 1st
2nd
3rd
4th
Q
Q
Q
Q
5
39
1155
7176
314
2669
623
914
1157
2072
4619
1693
+
+
+
+
+
+
VIII AB 1st Q
2nd Q
3rd Q
4th Q
35
14
5
31
9
6
VIII AB 1st
2nd
3rd
4th
11
28
26
22
5
5
6
4
Q
Q
Q
Q
OTHER
•
-
11 -
GERMAN DEMOCRATIC REPUBLIC
(B. Vaske)
•
Specleß
Area
r~onth
Redfish
(S .mentella)
IIa
!.!ay
IIb
XII
XIVa
June
June
July
June
July
No. of
Research
vessel
11
5
2
6
1
6
June
July
~reenl:'lnd.
•
IIb
~larch
June
July
.June
September
October
No. of fish
l'leasured
Aged
2413
936
309
836
1432
104
144
700
245
58
28
2061~
25
11
April
June
July
halibut
Samples
Ccmnercial
vessel
5
43
8
11
6
10
2
6
109
264
1466
1774B
4296
100
200
1432
200
1741
1127
1001
253
1329
367
247
242
50
~
-
12 -
FEDERAL REPUBLIC OF
GE~~NY
(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,
inc1uding lenght 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 well as the joint
investigations in the Wadden Sea area of Niedersachsen and Schleswig-lIolstein (young fish and brown shrimp survey) have been continued in spring
and autumn together with vessels from the Netherlands and Belgium.
•
Investigations on cod discards in the commercial fisheries and cod selectivity studies using mesh sizes of 90 and 100 mm mesh openings were carried out in the German Bight.
The cod sampling scheme off Greenland has been continued aiming at a stock
separation by means of different otolith structures.
A North Sea groundfish survey with special emphasis on the gadoid and pelagic species covering the area IVa and b has been repeated.
Research vessel cruises related to the national sampling scheme of the
demersal species were as folIows:
R.V. "Walther lIerwig"
Months
ICES area
Objectives
February
Febr ./March
IVa, VIa
VIa
Groundfish survey
June
IVa
Comparative fishing with
R.V. "Anton Dohrn"
June
Aug./Nov.
VIa
XIV
Groundfish and pelagic survey
Groundflsh survey
Groundfish survey
•
-
11
-
R.V. ttAnton Dohrn"
Months
leES area
Objectives
January
Feb./March
IVb
Groundfish survey
IYFS
Pelagic and groundfish survey
Groundfish survey
Groundfish survey
March/~lay
May/June
June/July
•
R.V . lIS o 1ea"
January
IVb
February
IVb. c
IVb
IVb
IVb
IVb
May
July
September
November
•
lVa. b
IVa. VI-VIII
IVb
IVa. b
Groundfish survey
Groundfish survey
Sole beamtrawl survey
Groundfish survey
Groundfish survey
Groundfish survey
Re~e"rch Ve~sel
Sempleo
Market Samples
No. of Fleh
Spec1es
Seatlon
,\rea
Cod
IIa
N'o. of
Semp1es
,
No. Of Fhh
Ileasured
Aged
Racial
Invp.stigationn
No. of
Samples
Mel\8ured
Aged
Groundf sh surveys
I
U
UI
I
U
IIr
I
IIb
IVa
IVb
22
5
44
168
62
135
56
117
43
II
II!
IV
!
!
9306
942
465
1515
936
4744
744
4047
17439
,
:
3
1180
2
757
.2
4
553
2151
610
493
465
~ 535
446
I
~
~ 697
544
,
i
I
•
Research Vcs8el Sample9
Market SRmpleo
No. of Flah
Spedeo 5eaoon, ,",,0. of
Areft
Samplea
No. Of Fhh
\lea8ured
Aged
Rad al
Inv~atig-
N(). of
5amples
attonn
Cod
MeRsured
Aged
,
Youngfis
and brown shr mp surv ys
IVb
II
III
Vc
VIa
79
248
899
Groundfi h surveys
2
142
25
143
33
471
6
17
5
22
6
9
10
80
72
I
II
ur
VIIb, c
II
III
VIIg-k
U
XIVb
IU
I
9
UI
51
4
IV
:
I
VI
i
1239
180
1239
180
,
;
1239
180
429
429
Re.earch Vc.sel SarnpleR
Speeies
Se8Bon ~o, of
Samp !es
Arel\
Marke t SampIes
No. of Ftsh
Me8sured
No. Of Ftsh
Aged
Radal
Haddo~k '
IIa
IVa
II
I
II
III
Groundf sh surveys
6
1774
49
15736
122
23652
60
8451
Mellsured
Aged
478
1
364
188
376
-
-
2
2
839
843
IV
II
III
36
52
32
37
6
13
II
11
Vb
I
II, III
Ia
II
IU
IIb, c
IIg - k
III
5
3703
5328
4958
5094
96
511
39
10
'.
No, of
Samp!ea
Invp.8tigatlonn
418
439
360
403
a-
i
•
Market Samplee
Re8earch Ve88el Sample"
Whlting'
No. Of Fhh
No. of Fl8h
Specie. Sea80n ~o. of
J\rp.A
Sample.
Aged
Meaeured
Radal
Inve8Ugatlonn
No. of
Sample.
!.fea,ured
Aged
Groundfish sur eys
IVa
I
II
III
IVb
I
II,II
48
73
54
145
135
Youngfish and
Vb
8
24
II
III
447
6631
7016
1942
15223
14659
230
396
343
rown sh irop survey
I
211
1017
~
-.l
Groundfish sur eys
Ia
II
III
IIb. c
II
III
IIg-k
24
29
2
4
11
4
II
III
!
I
1787
1087
15
15
74
207
!
:
,
I
Research Vcssel Sample.
Speciea
ArP-ß
Market 5amplee
No. ot Flah
50880D ~o. ot
No. Ot Fieh
Agod
lJeasured
~amplea
Rada1
Inv"etignUoDn
No. ot
5ampfes
Measured
Aged
Blue Li~g
VIa
Vlb+XII
XIV
Vb
1
1
1
1
I
I
Irr
I
443
644
182
541
443
644
182
541
Ir
Irr
IV
3
836
448
1
1
2
235
258
506
128
134
278
I
~
(Xl
I
!
I
,
,
---
- --
--- -
--
--
-
e
Research Vessel Sarnple ..
No. of Fish
Species SessoD ~o. of
,\rp.ß
::iample9
Saith~
IVa
-~
,
Market Sampies
No.
I,(casured
Aged
naclal
Invp.stig"tlonn
No. of
Ssmple9
MeaBured
.
or
Fish
Aged
,
I
I!
1
2
2140
2628
849
477
II!
IV
IIa
II
IV
I
I!+II
2
1
1398
2460
614
1
1
64
214
58
10
-
Pollack
Va/b
II+I!I
Ia/b
!
7
905
3655
4619
3337
180
1642
1799
1736
2
1
2
4
937
413
937
1787
495
227
496
1261
10
I
~Ia/b
2
8
f
,
I
I
~
..0
Research Veaae1 Samp1es
SessoD: ~o.
Speeiea
of
Samp1es
,'re"
Plaice
IVa
IVb
,
No. Of Fish
Measured
Aged
Groundfi h surveys
1
14
63
6242
74
2615
I
I
Ir
!II
IV
17
Vb
nacia1
1nvP.8 tigaHonn
2574
2076
No. of
Samp1es
3
4
4
927
Youngfis
!I
!II
Marke t Samplea
No. of Floh
3
Measured
2481
6553
2180
3094
and brown ehr mp surv YS
6521
286
16099
305
119
102
Aged
2655
437
578
523
I
0
I
Vb
Shrimp b catch investig tion
4
1124
79
22101
980
145
9131
67
5302
I
!I
!Ir
IV
,
I
,I
,
1
I
:
;
I\)
-
I
•
Research V.... el Sampies
No. or Fl.h
Specie. Se880D: No, or
Samplea
Area
Market Samplea
No.
Mea.ured
Aged
Racial
Inv.8tig-
No, or
Sampie.
Me".ured
or
Flah
Aged
atlonn
,
Sole
Groundfi h surveys
IVb
74
2
2
II
III
I\'
Vb
1200
47
16
Youngfis
II
atrl
79
89
III
Vb
896
I
:
11
225
121
116
65
1317
65
759
brown sh imp Bur eys
-
662
1484
-
I\)
Shrimp b catch investig tion
I
II
III
IV
2
8
I
27
1449
524
484
,
!
;
!
Re.eorch Ve.ael Somple ..
Speciea
Dab
IVb
No. of Flah
Season ~o. of
,
No. Of FIsh
tdeoaured
Somples
'\rea
Morket SAmpies
Aged
Raciol
Invp.atigotionn
No. ot
Samples
MeA8ured
Aged
Groundf sh surveys
85
15795
144
19610
60
7449
1397
9
I
II
III
IV
Youngfi hand brown sh imp sur eys
Vb
II
98
113
III
3815
16476
Shrimp
Vb
III
IV
I
ycatch investi ation
2
8
208
285
I
II
I
f\)
f\)
12
459
1506
14635
,
!
i
!
,
•
Research Vcssel 5aruples
Sr eeie • 58a80n: ~o. oC
J\reß
Semp18s
Market 5amples
No. oC Flsh
Ideosured
No. OC Ftsh
Aged
Radal
Invp.8tigationn
No. ot
SelUples
Measured
Aged
,
Flounder
IVb
GroundlFish surveys
II
IV
2
6
43
251
Youngf sh and brown s rimp su vey
IVb
II
IU
40
36
492
522
I
Shrimp bycatch invest gaUon
I
II
III
IV
Turbot
IVb
4
110
104
24
,
~rill
'"
w
96
607
174
67
-- ---
Groundfish s rveys
II
74
95
II
74
43
59
reenland
~Iibut
XIV
II
4
820
820
MB rke t SBmp 10 I
Research Vesse1 Semp10s
S.marinvs
XIV
146
IV
-
-
nadel
Invutlgntlonn
-
15007
1162
-
-
·S.mentella II
IV
III
Aged
Measured
-
II
III
No. Of Fllh
No. o f Flah
Speciea Sealon ~o. of
Sempies
/\rp.A
-
-
-
No. of
Samplu
MeB9ured
Aged
1
1
2
335
304
510
150
200
50
3
5
1
1
5
548
358
100
810
191
427
164
197
-
IV
-
-
-
~
1812
2897
292
456
1760
422
S.marinus
IIa
I
II
IV
-
-
-
-
4
1
2
1519
305
812
42
1081
425
21
3217
618
95
IV
I
II
b
14942
968
-
-
Macrourus
berglax
XIV
III
r
~ryphaeld
upestris
VIa ••
I
I
!
!
!
;
J
-
I
'"
~
- 25 -
ICELAND
(S.A. Schopka)
•
The biologieal sampling programme and research work carried out on demersal lish was
following the same lines as in previous years i.e. based on research vessels data and
market sampIes.
Most of the research vesseJs sampling was collected during the extension groundlish
survey (600 stations) in March 1986. This survey was made simultaniously on board live
stern trawlers of same type.
In July cod was tagged off the NW-coast during an experimental echo abundance
survey on cod.
Market sampIes were collected at the headquarters of the Marine Research Institute
in Reykjavik and the live branches of MRI located at other important lishing harbours.
Also fishery inspectors collected considerable amount of data on demersal fish both
at the market and on board of commercial lishing vessels.
The number of lish sampled is shown in the following tables:
SAMPLING DATA FOR COD 1986
Area
Va
-
Season
Jan.-March
-
Apr.-June
July-Sept.
Oct.-Dec.
-
Total
No of sam pIes
Market
Research
Sampies
Vessels
1098
88
200
51
412
30
202
29
1912
198
Measured
130228
13501
39421
6264
77676
3666
39546
4030
314332
No of fish
Aged
3840
2721
1184
2098
2309
1092
800
800
14844
Tagged
774
774
SMIPLING DATA FOR IIADDOCK 1986
Area
Va
•
-
Total
Season
Jan-March
Apr.-June
July-Sept.
Oct.-Dec.
-
No of sampIes
Research
Market
Vessels
SampIes
699
17
19
25
35
15
23
10
67
776
Measured
102844
1540
2069
3675
1050
1768
3385
688
117019
No of lish
Aged
2287
831
444
899
190
511
99
400
5661
Tagged
-
26 -
SAMPLING DATA FüR SAITHE 1986.
Area
Season
Va
Jan.-March
-
No of sampies
Research
Market
VesseIs
SampIes
311
20
21
24
37
10
10
8
-
Apr.-June
July-Sept.
-
Oct.-Oec.
-
-
Total
379
No of fish
Measured
2099
2077
715
1865
1485
797
522
Aged
897
1088
193
788
276
500
100
300
10677
4142
1117
62
Tagged
•
SAMPLING DATA FüR WHITING 1986.
Area
Va
No. of sampIes
Research
Market
vesseIs
sampIes
Season
I
Jan.-March
I
89
I
Measured
I
2150
No. of fish
Aged
I
Tagged
I
SAMPLING DATA FüR LUMPSUCKER 1986.
Area
Va
-
-
Total
Season
Jan.-March
Apr.-June
July-Sepl.
Oct.Oec.
Oct.-Oec.
No of sampIes
Research
Market
Vessels
Sampies
310
3
53
4
310
Measured
No of fish
Aged
1840
5432
401
100
400
100
0
0
0
60
7673
600
Tagged
•
- 27 -
SAMPLING DATA FOR REDFISH (S. MARINUS) 1986.
Area
Va
•
--
Va
Season
Jan.-March
Apr.June
July-Sepl.
OCI.-Dec.
Total
No. of sampies
Research
Market
vessels
sampIes
620
No. of fish
Aged
9
74335
2234
3654
3118
7038
2691
392
10
3206
502
39
96276
2061
9
20
11
33
673
Measured
Tagged
721
446
SAMPLING DATA FOR REDFISH (S. MENTELLA) 1986.
Area
Va
-
Va
Season
Jan.-March
Apr.-June
July-Sept.
Oct.-Dec
Total
No. of sampIes
Research
Market
vessels
sampIes
56
7
7
10
3
66
Measured
1844
1154
No. of fish
Aged
Tagged
135
1062
516
534
6
701
150
23
5811
285
SAMPLING DATA FOR REDFISH (S. VIVIPARUS) 1986.
Area
•
Season
No. of sampies
Research
Market
vessels
sampIes
Measured
Va
-
Jan.-March
Apr.-June
July-Sept.
177
2
22
6043
26
458
Va
Total
201
6527
No. of fish
Aged
Tagged
- 28 -
SAMPLING DATA FOR ßLUE LING 1986.
Area
Va
--
Season
Jan.-March
Apr.-June
July-Sept.
Oct.-Dec.
No. of sampies
Market
Research
sampies
vessels
41
10
No. of fish
Aged
254
1
254
125
296
24
3
699
254
2
51
Total
Measured
Tagged
•
SAMPLING DATA FOR LING 1986.
Area
Va
-
Season
Jan.-March
Apr.-June
July-Sept.
Oct.-Dec.
No. of sampies
Research
Market
vessels
sampies
90
15
105
Total
No. of fish
Measured
Aged
454
2
1
454
25
98
90
3
667
499
Tagged
45
SAMPLING DATA FüR TUSK 1986.
Area
Va
--
Total
Season
Jan.-March
-
Apr.-June
July-Sept.
-
No. of sampies
Research
Market
vessels
sampies
206
2
3
370
6
1950
1091
33
244
No. of fish
Aged
868
247
42
127
187
479
1
üct.-Dec.
Measured
721
Tagged
SAMPLING DATA FOR CATFISH (ANARHICHAS LUPUS) 1986.
Area
Va
Jan.-March
-
Apr.-June
-
•
Season
_.
Oct.-Dec.
-
July-Sept.
Total
No. of sampIes
Market
Research
vessels
sampIes
Va
-
Total
•
Season
Jan.-March
JuI.-Sept.
No. of fish
Aged
30
19
-
5
5
I
-
20703
1149
1215
884
-
-
100
-
593
11
24196
2179
544
-
SA~IPLING
Area
Measured
DATA FOR SILVER
No. of sampies
Market
Research
sampIes
vessels
81
50
1779
300
131
114
-
S~IELT
Tagged
1986.
Measured
No. of fish
Aged
2554
10106
361
755
12660
1106
Tagged
-
30 -
SAMPLING DATA FOR GREENLAND I1ALIBUT 1986.
Area
Va
-
Season
Jan.-March
-
No. of sampIes
Market
Research
vessels
sampIes
5
I
21
8
7
7
1
Apr.-June
Apr.-June
July-Sepl.
Oct.-Dec.
-
Total
5
44
Measured
No. of fish
Aged
Tagged
1594
245
4096
1486
1760
976
241
8671
•
1727
SAMPLING DATA FOR PLAICE 1986.
Area
Va
---
Season
Jan.-March
-
No. of sampies
Research
Market
sampIes
vessels
6
5
2
1
-
10
Tagged
530
3
Oct.-Dec.
No. of fish
Aged
5352
4
Apr.-June
July-Sept.
Total
Measured
11
385
1056
187
328
6821
717
SAMPLING DATA FOR HALIBUT (HIPPOGLOSSUS I1IPPOGLOSSUS) 1986.
Area
Va
-
Total
Season
Jan.-March
Apr.-June
July-Sept.
Oct.-Dec.
-
No. of sampIes
Market
Research
sampIes
vessels
Measured
No. of fish
Aged
4
-
1
-
1542
445
135
-
-
--
246
1
1710
445
242
-33
--
--
Tagged
•
-
31
-
SAMPLING DATA FOR WITCH (GLYPTOCEPHALUS CYNOGLOSSUS) 1986.
Area
Va
-
---
Season
Jan.-March
Apr.-June
July-Sept.
Oct.-Dec.
-
Total
No. of sampies
Research
Market
sampIes
vessels
--
Measured
No. of fish
Aged
--
5
-
-3230
-
300
-
188
5
4711
300
188
--
1481
-
Tagged
-
SAMPLING DATA FOR STARRY RAY (RAJA RADIATA) 1986.
Area
Va
-
--Total
•
Season
Jan.-March
-
Apr.-June
-
July-Sept.
-
Oct.-Dec.
-
No. of sampies
Market
Research
vessels
sampies
574
-37
--
611
--
Measured
9047
-
198
--
9245
No. of fish
Aged
-
Tagged
- 32 -
IRELAND
(R.
Grainger )
Port sampling of commercial catches of cod, haddock and
whiting continued in Divisions VIa and VIIb and sampling of
haddock landings from Division VIb was started. Landings of
cod, whiting and plaice from Division VIIa and discards of
whiting from the VIIa Nephrops fishery also continued to be
sampled. A start was made on the sampling of hake, megrim
and angler (~ piscatorius and ~ budegassa) in Division
VIa and Sub-area VII (except VIIa).
A beam trawl survey for juvenile plaice in shallow water off
the east coast of Ireland was carried out as usual in May and
September.
Groundfish surveys in the Irish Sea in June and September
aimed at pre-recruit whiting and cod were conducted as they
have been since 1984.
No.
meas'd
No.
aged
11
16
51
12
1234
551
7557
529
165
222
249
192
1
2
3
4
10
28
18
14
996
1617
1829
1317
337
347
226
299
1
2
3
4
2
7
9
1
147
272
412
30
131
133
0
30
179
16491
2331
Species
Div
Quarter
Cod
VIa
1
2
3
4
VIIa
VIIb
Totals
No.
samples
•
-
Species
Div
Quarter
No.
samples
No.
meas'd
No.
aged
Haddock
VIa
1
2
3
4
6
20
43
9
1187
1788
4635
897
159
243
343
255
VIb
2
3
3
4
802
244
131
106
VIIb
2
3
4
11
9
1
568
504
204
0
0
106
10642
1441
No.
meas'd
No.
aged
Totals
Species
Div
Quarter
Hake
VIa
4
VIb
4
No.
samples
2
17
34
0
34
0
3
1
8
25
379
0
0
VIIg
2
3
4
12
10
4
537
321
650
0
0
0
VIIj
1
2
3
4
2
12
29
4
255
735
1815
94
0
0
0
0
VIIb
Totals
e
33 -
2
85
4879
-
Species
Megrim
Div
Quarter
Vlb
4
VIIb
2
3
4
VIIg
VIIj
No.
aged
4
5
1
805
770
25
0
0
0
2
3
3
7
737
1363
0
0
1
2
3
4
2
7
24
886
848
4146
1019
0
0
0
0
5
59
Div
Quarter
Plaice
Vlla
1
2
No.
samples
10696
No.
meas'd
No.
aged
4
7
26
17
12
1368
3717
2737
1498
207
123
192
161
2
3
23
24
2520
2979
177
181
14819
1041
No.
caught
No.
aged
41
41
1238
3048
292
292
82
4286
632
3
Totals
109
No.
of hauls
Plaice
beam trawl
survey
Totals
No.
meas'd
0
Species
Vlla
No.
samples
97
Totals
Plaice
ground
fish
survey
34 -
2(may)
3(sep)
•
-
35 -
No.
aged
Species
Div
Quarter
No.
samples
No.
meas'd
Whiting
VIa
1
2
3
4
4
11
54
7
1929
2370
11233
1784
105
148
119
146
VIIa
1
2
3
4
8
16
7
1601
3046
2978
1923
165
173
87
180
VIIb
1
2
3
4
4
4
11
2
868
718
3061
973
48
127
64
54
Whiting VIIa
Discards
1
2
3
4
3
6
6
6
234
107
159
327
57
28
0
76
VIIa
2
29
Ground
fish
survey
TOTAL
14
192
2903
36214
117
1694
- 36 -
Quarter
No.
samples
No.
meas'd
Species
Div
L. budegassa
VIg
VIf
3
4
VIIf
2
3
4
4
30
153
VIIg
2
3
4
2
7
3
VIIj
1
2
3
4
3
5
21
5
89
310
757
167
50
1534
1
7
3
101
Totals
L.piscatorius
1
17
VIa
2
3
Vlb
4
VIIb
2
3
4
4
11
1
95
493
46
VIIg
2
3
4
4
5
2
198
290
33
VIIj
1
2
3
4
3
8
23
5
205
242
878
264
75
2865
Totals
17
- 37 -
NETHERLANO-S.
(F.A. van Beek)
In 1986 the market sampling of landings by the Duteh fleets in the
Netherlands was eontinued for the following speeies: brill, eod,
haddoek, plaiee, sole, turbot and whiting. For roundfish the market
sampling was stratified on an area basis. For the other speeies sampies
were stratified by harbour. All sampies were also stratified by market
eatogery. The tables below indieate the level of sampling.
In February R.V. "Tridens and R.V. "I81s" carried out a survey on
spawning plaiee in the S.W. North Sea in order to investigate the
relation between age, length and maturity on the spawning grounds.
In February R.V. "Tridens" and R.V. "Isis" partieipated in the
International Young Fish Surveys (IYFS). These surveys are earried out
yearly sinee 1960 and estimate the relative abundanee op 1 and 2 year
old herring and roundfish.
In April/Maya beam trawl survey was earried out in the South Eastern
North Sea. The aim of this survey was to determine the abundanee and
age-distribution of sole and plalee in thls area, and to determine the
maturity stages of male soles.
In August a beam trawl aurvey was earried out in the Central and
Southern North Sea by R.V. "Isis" and the charter "I<W 34" in
eollaboration with Be1gium in order to investigate the distribution
snd
abu~dance
of ptaice and sole in these areas.
In August a survey was carried out on R.V. "I51s" and the charter
"I<W 36" in the Southern and Central North Sea with the standard COV
trawl in the framework of the ICES multi-speeies program.
In October R.V. "Tridens", R.V. "Stern 11 , R.V. "ls1s" and R.V.
"Schollevaar" participated in the Demersal Young Flsh Survey (DYFS)
These surveys estimate relative abundance of brown shrimp and juvenile
p1aiee and sole in the eontinental nurseries. The surveys are earried
out in eollaboration with Belgium and the Federal Republie of Cermany.
In APril a DYFS survey was earried out on a reduced station grid by R.V.
"Tridens" snd R. V. "Schollevaar".
On board of R.V. "Isis" 1700 juvenile soles (range 15-24 cm) were tagged
in the German Bight near Heligoland and Spiekeroog with the Peterson
mini tag in October. Also 750 plaiee were tagged near Heligoland and
Amrum Bank with this tag and injeeted with tetra-cyeline.
In October/November R.V. "Tridens" and R.V. "Isis" carried out a survey
in the Southern North Sea with the COV trawl direeted to roundfish. This
survey is held sinee 1980 (Duteh Groundfish Survey).
- 38 _
SAMPLING DATA FOR SOLE
1986
number of fish sampled
fish market
PERlOD
research vessel
AREA
measured
North Sea
Wad den Sea
Estuary
Zeeland
Estuary
l
I
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
SAMPLING DATA FOR PLAICE
aged
74
1034
1539
876
823
1st quarter
2nd quarter
3rd quarter
4th quarter
aged
I
I
1228
386
531
22
39
37
1986
number of fish sampled
PERlOD
fish market
research vessel
AREA
measured
North Sea
Wadden Sea
Estuary
Zeeland
Estuary
I
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
aged
2859
1280
1200
1431
aged
2085
1220
1920
311
158
192
39 -
SAMPLING DATA FOR DAß
1986
number of fish sampled
PER IOD
fish market
research vessel
AREA
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Wadden Sea
Estuary
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Zeeland
Estuary
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
North Sea
•
SA~PLING
DATA FOR
TURBOT
I
measured
aged
aged
901
807
1114
I
110
54
27
1986
number of fish sampled
PERIOD
fish market
research vessel
AREA
measured
North Sea
S~~PLING
1st
2nd
3rd
4th
1194
1324
1195
quarter
quarter
quarter
quarter
DATA FOR BRILL
1558
aged
aged
299
321
299
328
8
6B
174
33
1986
number of fish sampled
PERIOD
fish market
research vessel
AREA
measured
North Sea
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
915
722
672
1124
aged
356
327
347
343
aged
4
29
20
7
- 40 SAMPLING DATA FOR COD
1986
number of flsh sampled
PERlOD
fish market
research vessel
AREA
measured
aged
aged
100
Northern
North Sea
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Central
North Sea
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
478
166
100
111
50
75
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
240
386
488
64
50
100
40
7
1st quarter
2162
1248
836
2896
201
250
150
260
NW
55
43
77
50
117
50
170
37
I
l
----------------------------------------------------------------------
North Sea
29
I
I
l
---------------------------------------------------------------------I
I
l
Western
North Sea
SW
North Sea
Southern
North Sea
Eastern
2nd quarter
3rd quarter
4th quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
67
45
10
97
101
360
64
l
I
----------------------------------------------------------------------
North Sea
Total
Annually
10
9400
1301
I
1149
•
- 41 SAMPLING DATA FOR HADDOCK
1986
number of fish sampled
fish market
PERlOn
research vessel
AREA
measured
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
SW
North Sea
1st
2nd
3rd
4th
quarter
quarter
Southern
North Sea
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Northern
North Sea
l
Gentral
North Sea
•
NW
aged
aged
157
115
64
173
50
103
45
145
108
I
----------------------------------------------------------------------
North Sea
105
I
242
49
355
113
50
I
l
---------------------------------------------------------------------Western
North Sea
95
36
I
---------------------------------------------------------------------Eastern
North Sea
Total
Annually
•
l
quarter
quarter
I
67
50
294
283
530
229
50
100
6
I
10
40
64
2489
394
845
- 42 _
SAMPLING DATA FOR WHITlNG
1986
number of fish sampled
PERlOD
flsh market
research vessel
AREA
measured
Northern
North Sea
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Central
North Sea
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
1st
2nd
3rd
4th
quarter
quarter
quarter
quarter
Ist
2nd
3rd
4th
quarter
quarter
quarter
quarter
NW
North Sea
l
Western
North Sea
SW
North Sea
l
Southern
North Sea
Eastern
North Sea
l
aged
aged
93
30
67
I
70
49
44
85
I
I
152
235
114
38
•
50
55
210
234
290
50
2711
1850
1159
2114
100
200
250
93
82
40
83
125
342
I
----------------------------------------------------------------------
Total
Annually
9223
743
I
1049
•
- 43 -
NORWAY
(T. Jakobsen)
~p-areas
I and II
The research activities at sea continued at approximately the same
level as in 1985. The distribution and abundanee of younq eod and
haddock and of redfishes in the Barents Sea were invcstigated during a
eombined acoustic and stratified bottom trawl survey in January
March. The distribution and abundance of spawning eod was investigated
durinq an acoustie survcy of the Lofoten area in March. Spawninq eod
were tagged on the spawning grounds in Lofoten in March - April.
Combined with shrimp invcstigations, thil distribution of young co.! an.!
haddoek was studied in the central Rarents Sea in April· May and in
the Svalbard area in July - August. The distribution and abundanee of
eod,
haddock, redfishes, eatfishcs, and Greenland halibut werc
investigated in the Svalbard area in September - October. Part of this
SUIVCy
was
included
in
a multi-species acoustic zurvcy carried out
durinq th", same period, wherc the distribution and abun<1ance of
haddock and redfishes were investigated also in the Darents Zea.
eod,
Investiqation~
on distribution and drift of eod eggs were earrie<1 out
in March .- April and investigations on cod larvae and post-larvae were
earried out in May
July. In August
September the annual
international O-group survey, aimed primarily at cod, was carried out
in the Darents Sea and adjaeent waters.
Investigations on distribution and drift of sailbe eggs were carried
oul in February. An 0öqroup (post-larvae) survey for sailhe in the
area from Stad (62 N) Lo norlh of Lofolen (69 0 Nl was carried out in
May, and an aeoust.ie survey for sailhe on the eoaslal banks from
Lofoten to Norlh Cape was earried ouL in Or.tober-November.
Thc distribution of silver smelt
durinq a survey in M~rch - April.
was Sludied on the coastal banks
Thc sampling programme for ~ommereial eatehes of eod, haddoek, and
saithe was eontinued, and sampies of redfish and Greenland halibut
wcre also tak~n.
•
5ub-area IV
The distribution and abundanee of I- and II-group gadoids were studied
in February as part of the International Young Fish Survey. In April
an investigation on post-larvae of saithe was undertaken in Norwegian
walers, while the distribution and abundance of O-group of other
gadoids were studied in July in the northern North Sea. In February
and July, lhe distribution and abundanee of saithe were investiqated
duriny aeoustie surveys in the northern North Sea. Thc sampling of
eommereial catehes of sandeel, Norway pout, and sailhe was continued.
EE:l_~_~_;;~~':~~;;;~~i~ :-~-~- ;-i-~-~->:-~-;~- ;'~-';-;-~- ';-·~-~-:-s~-'
l
UA
1
2
3
4
78
2
7
9
1946
86
352
520
255
131
171
49
30356
15195
8117
6445
6
13
23
11
1023
1561
3404
1727
65
210
9
8
3473
10363
3498
6027
1
45
2
1
2
8
1917
100
16
754
137
46
68
35
27
9170
4864
1512
1413
13
11
H
19762
8939
H47
2268
12
25
9125
1715
540
1938
1
52
416
62
112
4804
31797
9178
468
276
40
46
85
44
41
2
105
16
526
2
3
4
UR
1
2
IVA
3
35
4
5
1677
540
1
24
424
2
3
4
lVB
1
3
4
129
12
3
1
1821
41
281
90
11
Tagged: Division lla, 1st q.: 994, 2nd q.: 70
14
9
1
2
4591
1709
6785
1983
•
- 45 -
MARKET
RESEARCH VESSEL
•
IIß
IVA
IVB
•
Aged
M"asured
--+--IT1----
No. of ;!NO. of No. of ~INO' of No. of No. of No. cf No. of
samples fish samples fi:h .. samples fis~ :amp::s !!.s~_
L-.
IIA
Measured
Aged
AREA SEASON
231
116
106
43
23857
15361
5265
2001
2
12
21
17
121
711
1555
1260
69
200
70
59
3740
9522
2677
1716
11117
3022
989
3547
14
15
10
482
116
11
60
54
1666
991
859
1875
3
3
5
9
6
195
233
144
161
55
1
37
146
11
10
1054
2256
135
25
12
23
8
197
29
240
35
55
4
120
6748
4
7665
378
1
2
3
4
76
2
4
5
1784
1
2
3
4
34
1210
10
1
2
3
4
6
2
247
250
520
1
2
3
4
1
3
4
72
9
7
307
13
3
1
1046
483
74
?O
_ 46 -
[f
-~-
AREA SEASON
___.. __
I
IrA
IrB
IVA
Measured
~TNO.
of No. of 1NO. of NO~;'). of No. of No. of
samp1esl fish S~~~~h sampIes fish
S:~!.::1 fish
1
2
2
56
3
3
58
4
2
34
1
2
3
4
18
808
59
5
11
6
161
10
146
341
1202
3913
901
1919
10
60
431
52
115
11
51
3
4
3
30
15
120
1
1
1
2
15
3
25
28
22
96
24
168
265
5391
535
3
3
3
9
3
3
4
11
12
249
95
1169
156
1
3
9
2
1
13
1609
141
415
482
1002
1168
16
10
4532
1009
463
3
121
1
4
IVB
No.
--,,;.~'~~-j
RESEARCH VESSEL
---~~-
103
1005
4
48
9
1079
4
261
181
50
3
3
1
4
13
2
3
28
35
16
10
5041
4932
2256
1252
•
- 47 -
RESEARCH VESSEL
EA50N
Aged
MARKET
Aged
Measured
Measured
No. of liND. of No. of ;INO. of No. of ;INO. of No. of iINO' of
sampIes fish samples fish samples fish samples fish
HA
1
2
3
4
60
44
25
4
385
553
137
4
1
16
14
16
12
55
148
243
181
1
18
226
21
2
616
5168
2
3
4
IIB
1
2
3
5
4
3
132
91
237
3
2
198
200
358
.1![2~
Ff:
1
2
Aged
Measured
--_
•..
---
MARKET
Aged
Measured
No. of No. of No. of No. of ~~.-~fNo. of NO"-·Of No. of
samples fish samples fish samples fish samplcs fish
.L-_--'-_ _. L - _
4
2
2
1
1
2
4
1
3
1
3
4
21
3
31
103
3
IIA
-----... _-----RESEARCH VESSEL
_._----------
8
128
IlB
3
2
IVA
1
3
4
9
17
18
10
30
15
70
8
- 48 -
"'[ ' '
~~E ---~'~~~I'-;';:';~~~~~~~- ~~;~~~-;;;;;:1
No. of No. of No. ~~O. of No. of NO. of No. of I~ of
___ samples fis~ sampl~~L:~S~__ samples fish ~~'=~~~
IIA
1
3
4
7
1
9
47
23
lVA
1
2
3
4
8
239
42
1
90
6
2255
4
4029
15
lVß
1
3
4
7
199
12
6
1585
1
•
327
15
NORWAY rOUT
-~._-_._----
-.-_____0_-
-----_.
MARKET
RESEARCH VESf,EL
AREA SEASON
Measurcd
Aged
Measured
Aged
-~.No.
of No. of
sam p.:.:.: ':'i~~
No. of No. of No. of No. of
samples fish samples fish
1
2
3
4
41
4
3
3
1023
173
100
179
IIA
1
2
4
36
9
30
2548
10
1459
IIß
3
IVA
1
2
3
4
42
5
111
29
4389
10
6
1
298
lVa
1
3
4
3
110
38
8
8478
1740
216
61
2
1
204
78
11
8
6
1101
330
593
-
~9
-
BtuE WHITING
-I"
[
A
__R.E__A SEA._S_O.N
RESEARCH VESSEL
Mea5ur~d
3
43
8
2
4
3
856
140
96
55
1
2
3
36
3
14
37
1153
3
260
1402
3
23
7
662
1
IIB
---1
MeaSU~~
Aged
No. of No. of ;~~-~ No. of No. of No. of No. of
samples fis~ samp~=:l~!:h samples fish samples fish
2
IIA
MARKET
Aged
4
2
3
1
36
25
4
92
2
3057
2024
LONG ROUGH DAß
R~l~:~' --~~~;;;;-;,::.~,~;=- --::~~~~:~;~j
[
I
IIA
IIß
IVA
No. cf No. of No. cf No. of No. cf No. cf No. cf No. of
samples fish samples fish samples fish samples fish
1
2
3
4
182
59
134
11
9331
2765
5270
830
1
80
2
17
3
4
41
36
3316
687
2105
1142
1
2
3
4
1
20
296
52
103
898
12755
3338
1
39
829
3
57
20
1518
114
12
1
186
37
4
IVB
- 50 -
RESEARCH VESSEL
MARKET
---.-,.-------f---.--.----- --------
SEASON
Aged
Measllred
Aged
~~-. -o-f--r-IN-O-.-O-f-+-N-O--.-O-f-rN-::.-O-f
sampies
IIA
I fish
sampies L~sh
4
10
9
16
15
IIß
3
2
2
lVA
1
3
4
15
21
45
51
5
5
1
No. of
Measllred
N,-).-o-i -N:.-;f-- No. of
f _i_s_h--JLs_a_m_p_l_e_s1-f_i_s_h-J
sam_p_l_e_s...L.._
SILVER SMELT
-1:AREA SEASON
_.-
,.,,,,,,~"""
---;;;e~ -lMe:sur~-
--
1
4
2
1
2
1
IIA
1
2
3
20
9
519
2
4
31
11
1066
3
lVA
1
2
3
4
Agcd
---
32
4
14
4
6
834
24
23
512
Mcasured
---
._- --_
..
:.:mPlesBi~_ ~~~~leJ~~_
No. of No. of No. of No. of No. of
sampies fish sampies fish
I
IlB
---------~
MARKET
No. of No. of
No. of
-'F
- 51 -
AREA SEASON
Aged
--
MARKET
RESEARCH VESSEL
Measured
Aged
Measured
No. of ;!NO. of No. Of;INO' of No. of ;INO. of No. of ;INO' of
sampies fish sampies fish sampies fish sampies fish
IIA
•
3
39
1133
2
3
10
6
10
9
16
42
5
n9
IIB
IVA
IVB
1
2
3
4
241
57
2
3
4
2
227
63
5
200
23049
6433
534
139
33
62
14232
3346
6420
[I::
L__t :,~~~~~~-~~~~~::~~~~1
sample:l~~sh s~~p~:.LfiSh ::~~sl_:~
sampies
I
•
fish
1
2
3
4
263
62
68
11
13389
3056
1843
313
449
1
2
3
4
128
28
57
57
7112
1098
4124
2472
87
HB
1
2
3
4
1
21
301
39
122
1190
13718
1886
IVA
1
3
4
3
38
3
HA
- 52 -
No report received.
PORTUGAL
(F. Cardador)
During 1986, three groundfish surveys were conducted by
INIP (Instituto Nacional de Investigacäo das Pescas) on board of
the R/V "NORUEGA". The first cruise took place in January,in some
areas of the Portuguese waters,in order to realize some trawl selectivity experiments, mainly for hake and horse-mackerel, and
using three different cod-end mesh sizes (40, 60 and 80mm). The
other two cruises (June and october) were carried out along the
Portuguese coast, to estimate indices of abundance of the main
commercial species, using a stratified sampling design.
Besides that objective.the survey that took place in October,was also to estimate indices of recruitment for hake and horse- mackerei.
The National sampling Programme cnntinued in 1986, at the
main fishing ports, concerning lenght frequency distribution of the
landings for the most important species.
The following tables present the sampling da ta collected
for hake (Merluccius merlucius) ,black scabbard - fish (Aph~~~
carbo) and some species of seabreams: Pagellus
Boops boops and Spondyliosoma cantharus.
acarne,P.bogaraveo,
•
- 53 SANPLING DATA FOR
APEA
Quayter
1
•
2
st
nd
of
samp1es
Research
Market
vessels
samp1es
mer1uccius
No
of
mcasurcd
26
396
25805
116
398
29410
269
12529
99
281
25054
241
1344
92798
IX a
3
4
rd
th
Year
•
No
~ler1uccius
fish
- 54 -
SA,\IPLI1\G
DATA FüR
~moPlls
carbo
N9 cf sampie
N9 cf Fish
Seascn
Area
(quarter)
Research Market
Radal
~Ieasured
vessels
lXa
sampies
invest
st
1
-
6
177
2nd
-
10
836
3rd
-
8
598
46
4
1034
46
28
2645
4
Year
th
Aged
•
- 55 -
SA\lPLl:\G DATA füR
Pagcllus acame
NO of sampie
NO of Fish
Season
Area
(quarter)
Research f!arket
/1easureJ !lgeJ Racial
Vessels sawples
invest.
1st
-
53
2479
51
2nd
23
57
3296
122
rd
-
40
2081
74
4th
24
67
5573
112
Year
47
217
13429
359
IXa
3
- 56 -
~!PLING
DATA FOR Pagellus bogaraveo
Season
"rea
(quarter)
1st
Znd
IXa
3rd
4th
Year
NO of sampIe
Research :-!arket
vessels sarnples
-
NO
~[easured
9
Z13
12
366
7
230
6
S
78
IS
33
887
9
-
of Fish
\ged Racial
invest.
•
-
SAMPLING
•
DATA
~7
FüR
-
Boops boors
N9 of sampIe
N9 of fish
I
Season
Area
(quarter)
Research
Vessels
1
st
nd
2
IXa
,rd
.)
-
4th
~larket
~!easured
\ged
Racial
invest
sampies
-
55
3440
30
60
6558
-
29
1429
30
63
4256
:
I
Year
60
207
15683
- 58 -
SAl-lPLI1\G DATA FOR SpondyliosoJn:l canth:lnlS
N9 of s:lJnp1e
Season
Area
(quarter)
esearch
N9 of Fish
~!arket
Racial
~!easured
Yessels
sampies
st
-
25
349
nd
2
18
25
853
3rd
-
21
284
4th
19
21
576
37
92
2062
1
invest.
IXa
Year
Aged
•
- 59 -
SUill:!
(E. de Cardenas)
Gadus morrhua
AREA
IIb
SEASON
1
2
3-
NO. of samrl1es
Research
Market
vessels
sampies
11
-
No. of fis
Measured
Aged
1.853
Racial
Invest.
212
4
•
Merluccius merluccius
AREA
SEASON
No. of sampies
Research
Market
vessels
sampies
-
VI
1
2
3
4
-
1,,'::1
1
2
3
4
VIIlab
1
2
3
4
-
Vlllc
1
2
3
4
74
29
42
1
IXa
1----
2
3
4
No. of fisl
Measured
Aged
2
4
3
4
268
756
483
585
-
19
14
4.943
4.149
22
17
5.552
3.716
-
44
34
42
17
7.439
6.611
7.513
5.148
-
35
30
49
4.355
10.767
15.001
50
6.025
35
3.724
294
29
30
22
3.726
7.444
1.666
239
150
-
-
19
21
-
308
389
-
Racial
Invest.
- 60 L<pidorhcnbus whiffiagrnis
AREA
SEASON
No. of sampies
Research
Market
vessels
sampies
No. of fis
Measured
Aged
100
74
159·
126
VI
1
2
3
4
1
1
3
3
VII
1
2
3
4
18
12
18
20
4.219
3.604
4.49.3
3.674
VIIlab
1
2
3
4
25
17
16
24
1.296
1.009
833
1.382
VIIIc
1
2
3
4
12
12
16
23
906
1.869
1.309
2.809
7
13
14
27
148
55
61
27
XIa
1
2
3
4
55
19
25
4
1
-
200
74
164
108
237
120
Racial
Invesl: •
- 61 -
Lepidorhombus boscii
AREA
SEASON
No. of samnies
Research
Market
vessels
sampies
No. of fis
Measured
Aged
1
VI
':XI
VIIIab
2
1
3
4
2
1
10
1
8
129
2
8
--
S
164
1:.J6
4
10
225
1
25
114
2
17
16
24
122
114
3
4
1
2
VIIIc
3
4
-
12
806
-
55
30
14
3.045
211
16
2.044
-
25
23
2.653
320
-
7
13
832
1.431
3
15
18
14
2.717
4
-
7
631
1
2
Xla
16
Racial
Invest.
- 62 Lophius piscatorius
AREA
SEASON
No. of samoies
Research
Market
vessels
sampies
No. of fis
Measured
Aged
1
2
3
4
1
1
1
1
98
85
88
54
1
4
19
14
19
13
1.559
1.111
1.544
729
VlIIab
1
2
3
4
25
13
20
25
1.703
1.007
1.220
1.853
VIIIc
1
2
3
4
14
11
21
24
652
792
2.006
980
Xla
1
2
3
4
8
7
7
6
144
90
163
127
VI
2
VII
3
42
24
30
1
9
9
-
Racial
Invest.
•
132
70
110
"-4
13
-
- 63 Lophius budegassa
AREA
VI
SEASON
No. of samnies
Research
Market
vesse1s
sampies
1
2
3
4
1
2
3
19
14
17
'2089
1413
1601
4
13
1111
1
2
3
4
25
13
20
25
1.312
884
1.009
1.531
1
2
VII
VIIIab
VIIIc
XIa
No. of fis
Measured
Aged
1
2
40
14
11
244
408
3
4
20
20
16
23
412
777
1
2
3
4
5
8
8
8
4
219
346
118
178
-
6
77
52
70
6
9
-
Racia1
Invest.
-
64 -
Nephrops norvergicus
AREA
VII
SEASON
1
2
3
4
1
'2
'lIlIe
.:l
4
Xla
,.
No. of samoIes
Market
Research
vessels
sampIes
1
2
3
4
37
24
30
9
14
-
No. of fis
Measured
Aged
.-
1
4
2
71
726
336
2
561
3
2
1
744
957
7&6
320
8
11
9
11
1.231
1.668
1.787
1.487
1
..-
..-
RaciaJ
lnvest •
•
•
- 65 -
(B. Sjöstrand)
Sweden took part in the International Younq Herrinq Survey in the
North Sea and the Skagerrak. However, it has no other activities
on which to report owinq to reduced opportunities.
UNIIED KINGDQM lEngland and Walesl
le.I. Macerl
SAMPLING DATA fOR HADDOCK
AREA
llJZF
Iß'4A
1048
104C
106A
1068
11l7A
NO. Of
NO. Of
NO. Of
FISH
FISH
SAMPLES MEASURED
AGED
----------(MARKET)---------3
ZZ
2H
1
22
35
1
ZI5
3657
37547
87
379Z
5810
IIZ
g
ZZI
2448
IJ
~97
455
o
SAMPLING DATA fOR HAKE
AREA
106A
107A
107E
1lJ7F
107M
107J
NO. OF
NO. OF
NO. OF
f ISH
f ISH
SAMPLES MEASURED
AGlD
---------- {MAR KET )---------5
99B
21
Z4
5
43B0
3
1
2137
lJ
lJ
lJ
513
195
IJ
g
59Z
lJ
SAMPLING DATA FOR LEMON SOLE
AREA
NO. Of
NO. OF
NO. OF
flSH
FISH
SAMPLES MEASURED
AGED
----------(MARKETl----------
1lJ7E
55
!167M
1
7517
159
o
2
SAMPLING DATA FOR MEGRIM
AREA
NO. OF
NO. OF
NO. OF
FISH
flSH
SAMPLES MEASURED
AGED
----------(MARKET)---------I1
1339
107F
3
!167M
4
5Z6
1lJ7E
-40.0
lJ
lJ
lJ
-
66
.
-
SAMPLING OATA FoR COO
AREA
IBIA
lBZF
IB4A
IB48
IB4C
IB6A
IB6B
Hi7A
IB70
107F
107G
IB7J
NO. oF
NO. oF
FISH
FISH
MEASUREO
AG~D
---------{MARKETI---------NO. oF
SA.~Pl~S
5
9
42
558
74
7
2
83
I
3
6
1
96 I
1655
5843
8731.
B
B
516
5566
894
133
14
96B4
\B85
241
12299
87
331
856
172
162B
21
26
18ll
37
SAHPLING OATA FoR SPVRDoG
AREA
IB4A
UJ4B
IB4C
IB6A
IB7A
IB7E
NO. oF
NO. oF
NO. oF
FISH
flSH
SAMPLES MEASVRED
AGEO
----------{MARKETI---------5
47
27
2
31
I
374
3533
2265
284
3191
IIB
B
B
B
11
B
B
SAMPLING OATA FoR MoNKS AND ANGLERS
AREA
NO. oF
NO. oF
NO. oF
FISH
FISH
SAMPLES MEASURED
AGED
----------{MARKETj----------
IlJ7E
145
B
ND. DF
FISH
MEASVREO
ND. OF
FISH
AGED
2129
35318
5J7
262
3lJeH
SJ,MPLING DATA FoR PLAICE
AREA
NO. OF
SAMPLES
----------CHARKET)---- ______
1114A
~H48
IB4C
IH6A
lB7A
IB7D
IB7E
lH7F
IB7G
8
153
3
I
59
24
76
IB
7
121118
2819
9127
1694
1126
198
49
B
1257
367
917
85
177
SAMPLING DATA FOR SOLE
AREA
104A
18.. 8
1.0'4C
IB7A
1ll'7D
IB7E
I.117F
II17G
IB7H
NO. OF
NO. oF
NO. oF
FISH
FlSH
SAMPLES MEASURED
AGED
----------{HARKET)----------
1
63
51
61
54
55
18
7
1
147
'189
6845
IB484
397lJ
9B63
311'21
1195
219
H
765
6IB
349
366
295
8B
11
lJ
•
•
-
67 -
SAMPlING DATA FOR SAITHE
•
AREA
NO. OF
NO. or
NO. OF
rISH
rISH
SAMPlES MEASUREO
AGED
----------(HARKET)----------
l.e'2F
lS4A
!B48
I
18
45
1963
577
1288
7
9
U6A
H
233
64
125
SAMPlING DATA FOR VHITING
AREA
NO. OF
NO. Or
NO. OF
rI5H
FISH
SAHPLES MEASURED
AGED
----------(MARKET)----------
!B4A
1848
2
187
7
4
82
58
6
2
I
!B4C
llI6A
1Il7A
10'7E
!B7F
llI7G
1B'7H
246
16SI1
689
436
9256
7298
18
1558
67
49
79!i1
2&2
853
H8
71
54
IB5
B
UNI TED KINGDOM
(Scetland)
(R. Jenes)
I.
Sampling
D~m~,"al
Fish
ContinuC'us monil0rlng was mainlain~d on Ihe calch ..s caught by the five main gea..
(roolor tra,.l, sein.. n..l, Iighl Irawl, N..phrops trawl ...nd demersal pair Irawl) used by
Scotlish lishermen. Landings wer.. sampl..d at all the major Cishing paris in Scolland
and the inlensil)' ef sampling is indicated in the te~t table belo""
•
Speci..s
No of vessels
sampled
No of fish
measured
No of otoliths
collected
Cod
Haddock
882
837
759
478
82886
195239
121488
19243
20917
12766
25190
8630
\\'hiting
Saithe
Saropling ef demersal lish discarded by the Scottish fleet wa.s also carried out on a
regular basis in 1986. Sampies were obtained during the course of commercia.1 trips
horn 936 hauls. The intensity of sampling is indicaled in the text ta.ble below:
Species
No of vessels
sarnpled
No of fish
measur..d
No of otoliths
collected
Cod
Haddock
Whiting
Others
70
70
70
70
11062
80698
44579
69862
4307
3629
Nil
1602
•
- 68 2.
Research and Commercial "essel Activities
In February 1986 "Scotia" participated in Ihe Inlernational Young Fish Survey in the
Nonh Sea.
b March 190(, "Scotia" carried out a surve)' of demersal fish and Iocrring 'Slocks off the
west coast of Scolland aCES Sub-area .1a).
In August 1986 "Scotia" carried out a survey of dernersal fish slocks in Ihe norlh~rn
and middle Norlh Sea (ICES Sub-areas IVa and IVb).
In Jul) 19Sb "Clupea" carried out a pelagic O-group survey for gadoid species in Ihe
northem Norlh Sea (lCES Sub-area l\·al.
In August 1986 a commercial vessel, Ihe "G A Reay", was chartered to carry out a
suney of Ihe haddo<k stock on Rockall Bank.
In
\~ay
$crif'!-
'Junf' lQE-t'o a c0mmt>rcial YE'!Os,(l'l. th(' "H(lIen(l" was charlered tC' tarr)' out a
(Ir
d~amt"tt'r.
m('s,h ~rlE'.:-tJo~ exrf"rimf'nt~ U"-ini: a seine n(>l ,,",ith
mer.h si:!!" a:1d le':1~lhf. o[ ~xlE'nsion p'eoce.
Durin~ thc SUm[l1('T
SltE'
.01
ch"s(' tC' Aberd('{>n.
19~t, ta{:f~nb or sIllall saithi" was
alteration~
tö cod~nd
re-commenced at an inshQfe
Thc newl) comp!"teJ computer data base on tagg<>d demersal fjsh was used to analys"
.. hiting and cod ta&g"d on the "'esl coast of Scotland (leES Sub-area \'la).
(v.
Anthony and B. Rothschild)
The U.S.A. had no fisheries and no research activity in the leES
area in 1986. Activities in the Northwest Atlantic in 1986 have
been reported to NAFO.
•
- 69 -
U.S.S.R.
CS.A. Studenetsky)
In 1986, as in previous years. tbe trawl and echo surveys
were carried out to aasess tbe abundance of young and adult bottom commercial fiabea. Tbe year-class atrengtb of cod. baddock.
redfish and flounders was determined by tbe number of eggst larvae
and D-group fiab.
Ecological and physiological cbaracteriatics of commercial
fisbes were continued to be studied during the wintering. feedlng
and spawning. A special attention was paid to biological sampling
for definition of quantitative ecosystem relations.
With the aid of underwater instruments the date were collected
to calculate tbe catchability coefficient of research trawls separately by fish species and sizes. The experiments were set up to
define tbe survival rate of cod and haddock which escaped through
the trawl bag mesb.
Some elements of the trawl-echo surveying tecbnique were
improved.
Tbe icbthyological data were collected on the age-aize composition, feeding and maturity of cod. rßddock. redfisb. Greenland
•
balibut. plaice. long rough dab. wolffishen in tbe leES Subarea I
and Divisions IIa and lIb.
The data obtained in 1986 on board tbe research and scouting
vessels are listed in Tables 1-8.
•
- 70 Table 1
Biological da ta on cod collected in 1986.
---------------------------------..
lCES
areas
;
quater
~
No. of fieh, spec.
fo~
measured . :examined
: feeding
: aged
---------------------------------I
II
III
I
1Y
I
IIb
II
III
1Y
I
II
III
IIa
IY
Total
Table 2
ro9587
49222
90282
9513
12641
2635
9837
806
4963
400
5128
306
132
10784
39429
22705
25
1601
5040
2623
600
2670
1599
25568
13953
15129
1938
388242
2730
2580
1705
330
42553
I024
1500
1371
19561
Biological da ta on haddock collected in 1986.
---------------------------------No. of fish, spec.
leES
areas
:
quarter
• examined
:for feeding
: measured
:
aged
-------------------~------~------900
34421
2730
I
500
1842
37763
II
I
5049
4075
79140
III
1600
2794
35203
1Y
Tlb
IIa
350
III
49
1Y
2280
507
232
I
ro8D8
Tl
III
1226
69
2557
433
425
300
375
400
14205
8107
1Y
Total
I
I
II
203867
50
IOD
- - - - - - ----- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
•
- 71 Table 3
Biological data.on redfish collected in 1986.
---------------------------------No. of fisht spec.
lCES
quarter
areas
: measured
I
TI
lil
I
IY
I
TI
lil
IIb
IY
I
TI
III
TIa
IY
Total
• examined
. ~for feeding ;
aged
1053
2252
II29
500
250
200
100
IOD
42
3143
1662
9936
50
200
450
200
500
2II73
15006
2851
8085
3374
3575
600
650
2146
1200
600
500
66832
9249
5446
Tab1e 4 Bioloeic~l data on Greenland halibut collected in 1986
---------------------------------:
No. of fiah, apec.
lCES
quarter
areas
:
: measured
.
.
:examined :
:for feedin~
-- - - - - --- - - - - - - _.- - - - - - _.- I
I
•
395
230
92
214
50
1Y
162
ro93
3298
5914
25
300
I002
1216
I
5607
528
966
2541
ISO
200
300
77
20282
380I
1515
TI
lli
IY
I
TIb
IIa
TI
III
TI
III
1Y
Total
aged
- - - .:.. - - - - 200
200
600
238
-
•
- 72 Table 5
Biological data on saithe collected in 1986.
--------------------------------No. of fieh, spee.
lCES
quarter
aress
meaeured
I
I
TI
96
G
III
1442
13
IY
: aged
125
I
II
ill
I
IY
338
I
471
2
1451
1658
IOD
IOO
225
152
600
5478
602
700
ITb
ITa
IT
III
1Y
, Total
Table 6
. examined
1'or feeding
Biological data on wolffishes collected in 1986.
----------------------------------No. of fiah, spee.
lCES
areas
:
quarter
- - - - - _.-. I
: meaeured
- - - - I
11
Ili
1Y
IIb
I
TI
lli
Total
.:...
- - - - - 268
56
433
35
• examined
• aged
• far feeding •
..
.:.
- - - -
2
7
2268
1998
239
339
I
TI
lli
243
14
6
1Y
163
16
5586
602
IY
II a
..
81
- - .:.. - -
- - -
--
Table 7
- 73 Biological da ta on plaice collected in 1986.
leES
areas
No. of fiah, apee.
quarter
measured
: examined
: for feeding :
aged
---------------------------------1718
1995
250
252
200
325
300
200
200
200
Total
G036
1027
900
Table 8
Biological data on long rough dab collected in 1986;
1925
398
I
II
1iJ
I
1Y
I
II
IIb
III
IY
I
II
IIa
III
1Y
lCES
areas
No. of fish, apee.
quarter
aeasured
I
I
II
III
IY
•
ITb
I
II
lli
1Y
IIa-
I
II
543
689
936
G37
19
346
3946
·78I0
.examined
•
feeding :
.
.: for
aged
200
209
I03
200
200
200
525
700
200
625
488
III
IY
Total
Summed for
all speeies
990
25
16404
1962
1225
712727
74001
38078