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C.M. 1990/G:l
International Council for the
Exploration of the Sea
Report of Activities
DEMERSAL FISH COMMITTEE
by
Niels Daan
1989
Table of Contents
BELGIUM .... ......... . ... ........ .. ... .. .. ...... .... ........ .... .... .......... . ... ....... 2
DENMARK ............................................................................... 4
FAROES ................................................................................... 8
FEDERAL REPUBLIC OF GERMANY .............................................. 11
FINLAND ...... .. ... .............. .. . ...... .. ... .. ... . ......... .................. ... .. .... 17
FRANCE ... . . ... .... ....... ........... ..... ... ....... .. . .. ........... . ........ .. .... ...... 18
GERMAN DEMOCRATIC REPUBLIC ...... ... .. ...... .... ..... ..... .. ...... ....... 25
ICELAND ... .......... .... . .. .. .. .... .. ........ ..... .......... ...... . .. .. ... . ... ... ....... 26
IRELAND ................................................................................. 30
TIIB NETIIERLANDS .... ....... ....... . ....... ... ..... .. . .. . . . ........................ 32
NORWAY ................................................................................. 37
roLAND . ............ ............ .. .. ..... ... . .... .... ............. ....... .. ....... ... . ... 39
PORTUGAL ... ... .. .......... ... ........ ... .. .. ................................ ... .. ... ..40
SPAIN ... .. ... . ... . ... ... ....................... .. .. .. ... . .. .. .. . ...... .......... .... . .. ... 42
SWEDEN .................................................................................. 46
UNITED KINGDOM (England and Wales) ............ ....... .... ... .... ...... ...... .48
UNITED KINGDOM (Scotland) ........ ... .. ..... . . .. ... ..... .. ..................... . .49
U.S.A .. . . ................... . ....... .. ... .. . .. .. ... ....... .. ....... . .. . .. .. .. ... ... . ....... 50
U.S.S.R .... .... .. ....... ........... ......... .............. ........ .. . .... .. ............ ... 51
-2-
BELGIUM
(R. de Clerck)
Recording of densities and growth rates of the 1988 and 1989 year classes of sole, plaice,
dab, flounder, cod and whiting was carried out. Two cruises were therefore undertaken
according to the criteria of the International Demersal Young Fish Survey. The beam 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:
1989
Nr of fish
SOLE
Nr of samples
Area
Season
I
Res. vessels
Market
-
I
Measured
Aged
175
667
537
70
142
207
1
2
3
1
2
6
1
Vllf,g
1
2
3
-
10
4
1
1 096
325
70
200
150
70
VII a
1
2
4
-
9
13
6
-
1 126
1466
28 815
237
430
1 795
-
1
I
210
210
1
I
210
210
IV
VIId,e
1/4
I
VIII
1/4
I
SAMPLING DATA FOR:
1989
Nr of fish
PLAICE
Nr of samples
Area
IV
Vllf,g
VII a
Vlld,e
Season
I Res. vessels
-
1
2
3
l
1
2
3
-
1
2
4
-
1/4
-
-
I
I
Measured
Aged
2
6
1
122
382
850
50
90
300
10
4
1
654
214
50
150
90
50
9
7
519
412
120
100
190
120
150
150
Market
3
-
-
3
I
BELGIUM
BELGIUM
-3SAMPLING DATA FOR:
1989
Nr of fish
COD
Nr of samples
Area
IV
Season
I Res. vessels
Market
-
1
2
3
SAMPLING DATA FOR:
I
7
6
4
IV
Season
1
2
3
Aged
340
300
200
340
300
200
1989
Nr of fish
WHITING
Nr of samples
Area
Measured
I Res. vessels
Market
-
7
-
4
6
I
Measured
Aged
255
300
180
255
300
180
BELGIUM
BELGIUM
-4-
DENMARK
(H. Gislason)
The RN "Dana" made 11 cruises in 1989, most of which took place in the North Sea.
Apart from participating in internationally coordinated surveys (1, 2, 7, 10) the surveys
were aimed at investigating the effect of eutrophication and oxygen deficiency (3, 5, 11),
sprat recruitment (8), sandeel biology (4) and food selection of whiting (9).
The sampling programme for the human consumption fishery was continued in 1989 at the
same level as in previous years. The number of market samples is given in the tables as the
number of boxes, each containing approximately 35 kg of fish.
The market samples reported for sandeel, Norway pout and whiting have been obtained
from the industrial fishery. Each of these samples weigh between 5 and 10 kg. Compared
to previous years, the number of samples from this fishery has decreased due to a decrease
in the number of fishermen who allow samples to be taken from the catch.
R.V "Dana" Cruises 1989
Period
1 - 23 February
Purpose
Int. Young Fish Survey
43 hauls, 61 IKMT
2)
28 Febr. - 17 March
Baltic Young Fish Survey
54 hauls, 16 CTD, 27 Bongo
The Baltic
3)
18 - 22 March
Environmental investigations
15 hauls, 20 CTD, 4 HAPS
Kattegat
4)
15 - 28 April
Sandeellnvestigations
North Sea
5)
1 - 13 May
Flatfish disease
41 hauls
North Sea, Skagerrak,
Kattegat
6)
18 - 19 May
Course in hydroacoustics
Skagerrak
7)
19 July - 7 Aug.
Int. Herring Acoustic survey
33 hauls, 53 CTD
North Sea, Skagerrak
8)
9 - 25 August
Sprat recruitment
122 CTD, 170 MIK/biones
North Sea
9)
29 Aug. - 12 Sept.
Food selection by whiting
North Sea
10)
15 Sept. - 2 Oct.
Int. Herring Larval Survey
203 GULF, 2 CTD, 2 hauls
North Sea
11)
7 - 13 November
Environmental investigations
21 hauls, 27 CTD
Kattegat
Cruise no
1)
Area
North Sea
-5SAMPLING DATA FOR:
1989
WHITING
Nr of samples
Area
Season
I Res. vessels
DENMARK
Nr of fish
Market
I
Measured
Aged
1
2
3
4
43
-
5
5
17
6
2 463
8
456
21
1 196
7
394
20
illa(N)
3
4
-
6
3
574
28
574
22
Illa (S)
1
2
3
4
-
7
1
-
11
-
6
219
2
2 720
751
213
2
2 720
734
IV
I
SAMPLING DATA FOR:
I
1989
HADDOCK
Nr of samples
Area
IV
Illa (N)
Illa (S)
Season
I Res. vessels
1
2
3
4
43
1
2
3
4
-
3
4
Market
-
-
-
I
-
SAMPLING DATA FOR:
I
Measured
Aged
5
4
3
5
799
333
481
337
799
332
480
333
5
3
9
6
1 072
780
1 210
921
1 070
778
1 207
921
28
1
28
8
1
-
DENMARK
Nr of fish
I
-
1989
COD
DENMARK
~
Nr of samples
Area
IV
Season
1
2
3
4
Illa (N)
Illa (S)
I
Nr of fish
Res. vessels
Market
43
11
-
-
I
Measured
Aged
8
1 462
628
918
518
1 196
628
917
517
7
11
2
3
4
-
4
5
9
10
550
415
601
790
550
414
599
790
1
2
3
4
-
12
5
977
323
317
433
974
323
300
432
1
-
11
13
-6SAMPLING DATA FOR:
1989
Nr of fish
SAITHE
Nr of samples
Area
IV
Illa (N)
Season
I Res. vessels
Market
I
illa(N)
Illa (S)
3
3
2
5
391
362
102
388
362
102
1
2
3
4
-
4
2
3
2
571
229
357
136
570
229
356
136
-
-
1989
Nr of fish
NORWAY POUT
Season
I
3
4
1
Aged
1
2
8
1 391
239
1 146
768
239
1 146
-
4
3
81
800
81
800
-
1
10
6
Market
43
1
3
4
-
I
I
I
illa(N)
Season
I
I
1989
Nr of fish
SAND EEL
Res. vessels
Market
-
7
50
4
-
3
1
2
3
3
I
SAMPLING DATA FOR:
I
I
Season
I
Res. vessels
Market
1
2
3
4
43
Illa (N)
Illa (S)
IV
Measured
Aged
842
5 680
308
717
4 727
1
333
333
1989
Nr of fish
PLAICE
Nr of samples
Area
DENMARK
Measured
Res. vessels
Nr of samples
IV
-
-
-
SAMPLING DATA FOR:
Area
Aged
43
Nr of samples
IV
Measured
1
2
3
4
SAMPLING DATA FOR:
Area
DENMARK
I
Measured
Aged
-
4
12
21
12
1 886
3 490
3 764
2 723
926
3 333
3 724
2 690
1
2
3
4
-
4
6
6
5
1 095
1 812
1499
1428
1 031
1 584
1 371
1 350
1
2
3
4
-
13
-
9
13
2 369
1 992
1 900
I 784
2 293
1 850
1 790
I 717
-
-
11
DENMARK
DENMARK
-7SAMPLING DATA FOR:
1989
SOLE
Nr of samples
Area
Illa (S)
Season
1
2
3
4
I
DENMARK
Nr of fish
I
Measured
Aged
2
2
254
274
287
254
274
287
3
317
317
Res. vessels
Market
-
2
'· : · ·.·.·.·-
-8-
FAROES
(J.Reinert)
The sampling programme for commercial catches of saithe, cod, haddock, ling, blue ling,
Greenland halibut and redfish was continued in 1989. In addition samples of the species
mentioned and tusk were taken from research vessel catches. The tables provide more
details.
The following research cruises were made in 1989:
In January RIV "Magnus Heinason" carried out an exploratory fishery with bottom trawl in
deeper waters Sand SW of the Faroes for grenadier and black scabbard fish.
In February-March RIV "Magnus Heinason" continued the Faroese Groundfish Surveys to
obtain information on the stock sizes of saithe, cod and haddock; see tables.
In March-April RIV "Magnus Heinason" and later in May MIS "Snoddio" carried out an
exploratory fishery with bottom trawl for black scabbard fish S and SW of the Farnes.
In April RIV "Magnus Heinason" carried out a survey with midwater trawls around the
Faroes for eggs and larvae of Atlantic halibut'.
In May RIV "Magnus Heinason" carried out an 0-group Survey in Farnese Waters to get
information on the year class strength of saithe. These surveys were continued in June-July
to get information on the year class strength of cod, haddock, Norway pout and sandeel.
In May-June RIV "Magnus Heinason" carried out a combined acoustic and trawl survey to
get information on the distribution of silversmelt in Faroese waters.
In May-June the commercial trawler Skarohamar was chartered to carry out an exploratory
fishery with bottom trawl around the Faroes for flatfish, particularly lemon sole.
In June-July the commercial longliner, MIS "J.C.Svabo" was chartered to carry out an
exploratory fishery around the Faroes with traps for tusk and ling.
In October-November RIV "Magnus Heinason" carried out an exploratory fishery with
bottom trawl in Faroese waters. Target species were mainly cod, saithe, ling, blue ling,
redfish and Greenland halibut.
In November RIV "Magnus Heinason" carried out a trawl survey around the Faroes as part
of a sampling programme to get more information on the population dynamics etc. of
redfish (Sebastes marinus, S. mentella, S. viviparus).
In December RIV "Magnus Heinason" carried out an exploratory fishery with bottom trawl
in deeper waters around the Faroes. Target species were mainly grenadier, black scabbard
fish, silversmelt and saithe.
On all cruises with RIV "Magnus Heinason" biological samples were taken as a routine for
most fish species from almost every haul and the measurements were entered into the
vessel computer automatically. Since not all data have yet been edited, the number of
samples and measurements by species for the 1989 can not be given at this stage except for
the Faroese Groundfish surveys.
.·.·;._
.. _.·... ..
·
-9SAMPLING DATA FOR :
1989
COD
FAROES
Research vessel
Area
Season
Vb
1
2
3
4
Market
IN Samples
N Measured
NAged
IN Samples
NMeasured
NAged
150
*
*
*
*
467
38
55
31
44
5 400
8 950
4 676
6 893
500
748
448
596
*
*
*
SAMPLING DATA FOR:
1989
HADDOCK
FAROES
Research vessel
Area
Season
Vb
1
2
3
4
Market
IN Samples
N Measured
NAged
IN Samples
NMeasured
NAged
150
*
*
*
293
19
15
16
29
5 325
4 498
5 508
8 993
249
250
300
249
*
*
*
SAMPLING DATA FOR:
*
1989
SAITHE
FAROES
Research vessel
Area
Season
Vb
1
2
3
4
Market
IN Samples
NMeasured
NAged
N Samples
NMeasured
NAged
150
*
*
*
*
344
26
42
29
26
5 438
11 296
7 065
5 422
325
299
299
299
*
*
*
SAMPLING DATA FOR :
1989
BLUE LING
FAROES
Research vessel
Area
Season
Vb
1
2
3
4
IN Samples
NMeasured
*
*
*
*
*
*
*
*
SAMPLING- DATA FOR
:
-
-
--- --
NAged
Sebastes marinus
Market
IN Samples
NMeasured
3
4
1
2
573
-
92
92
33
151
-
1989
-
Vb
Season
N Samples
NMeasured
*
*
*
*
*
1
2
3
4
SAMPLING DATA FOR:
NAged
Market
IN Samples
NMeasured
NAged
2
2
3
154
367
148
-
*
*
*
-
Sebastes mentella
Vb
Season
1
2
3
4
IN Samples
NMeasured
*
*
*
*
*
*
*
*
NAged
-
-
1989
FAROES
Research vessel
Area
-
FAROES
- ·--
-
Research vessel
Area
NAged
Market
IN Samples
N Measured
3
4
5
5
1932
1406
2302
1667
NAged
-
-
...
- 10 SAMPLING DATA FOR:
I
Area
Season
Vb
1/4
Research vessel
SAMPLING DATA FOR:
*
Season
Vb
1/4
SAMPLING DATA FOR:
Area
Season
Vb
1/4
I
NMeasured
NAged
-
NMeasured
NAged
-
-
Research vessel
N Measured
*
* Not possible to quantify at this stage.
*
NAged
FAROES
I
Market
IN Samples
I
*
GREENLAND HALIBUT
IN Samples
IN Samples
1989
*
I
FAROES
Market
I
I
*
Research vessel
IN Samples
I
NAged
LING
I
Area
NMeasured
jN Samples
I
1989
TUSK
2
NMeasured
NAged
120
-
1989
FAROES
I
Market
IN Samples
I
1
N Measured
NAged
184
-
- 11 -
FEDERAL REPUBLIC OF GERMANY
(G.Rauck)
The 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 measurements, otolith
sampling, individual fish weights, tagging of fish, stomach sampling, as well as studies on
fish density and distribution of demersal fish species was carried out during groundfish
surveys.
The monthly sampling programme for the analysis of by-catch species in the shrimp fishery
was continued, as well 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 Netherlands and Belgium.
Investigations on cod discards in the commercial fisheries and cod selectivity studies using
different mesh openings were carried out in the German Bight.
Research vessel cruises related to the national sampling scheme of the demersal species
were as follows:
Months
ICES area
Objectives
R.V. "Walther Herwig"
January
Febr./March
March
May/June
June/July
SeEt.-Dec.
I Vb
IVa,b,c
Vla,b
IVb
IVa,b,c
XIVb
Groundfish survey (fish disease)
IYFS
Groundfish and pelagic survey
Groundfish survey (fish disease)
Groundfish survey
Groundfish surve~
R. V." Sol ea"
January
February
May
July
August
December
IVb,c
IVb,c
IVb
I Vb
I Vb
IVb,c
Groundfish survey
Groundfish survey
Sole beam trawl survey
Groundfish and pelagic survey
Groundfish survey and fish disease
Groundfish survei'..
·,.··
- 12 SAMPLING DATA FOR:
Area
Season INr samp.
I
3
Ila
1
3
4
Ilb
3
4
!Va
1
2/3
!Vb
1
2
2/3
3
4
IVc
1
I Vb
1
2
3
4
I Vb
2
3/4
Via
1
2
Vllb
2
Vllg-k
2
VIie
2
XIV
1
2
3
3/4
I
I
21),
F.R.G.
1989
COD
Market sampling
Nr of fish
Research vessels
Nr of fish
Meas.
Aged
310
-
Other
I
I
I
I
Meas.
Aged
1
358
164
1
575
279
3 928
9 793
448
176
1 192
238
Nr samp.
-
-
841
213
-
-
I
1401)144 036
151)
2877
1309
-
I
I
460
872
444
664
I
I
I
3 058
197
7 297
1 874
386
1 774
413
I
I
I
I
I
I
I
I
I
I
I
3 1)
-
402)
422)
I
175 2)
1102)
154 2)
102 2)
15 1)
27 2)
I
3 2)
124)
324)
5 4)
64)
I
I
I
I
I
I
I
18 2)
19 2)
I
I
5 2) I
3 2) I
129 3)
-
-
44
124 5)
1245)
22)
1 500
53
109
5
10
135
30
62
121
62
121
7
7
15
15
7
7
I
8
29
1
145 2)
11 117
1 843
1) Samples taken on board of commercial trawler
2) Groundfish surveys
3) Tagged
4) Shrimp bycatch investigations
5) Young Fish and Brown Shrimp Survey
........
- 13 SAMPLING DATA FOR:
Area
Season INr samp.
I
Meas.
Aged
654
178
Ilb
3
IV a
1
2/3
562)
262)
7 002
5 091
653
372
I Vb
1
2/3
3
69 2)
302)
3 2)
776
846
IV a
1
2
I
362)
242)
I
4 326
3 168
13
547
3 553
258
587
Vlb
1
I
8 2)
I
1 506
324
VIIb
2
75
74
Vile
2
14
10
Vllg-k
2
15
15
I
I
I
I
3 2) I
3 2)
4 2)
SAMPLING DATA FOR:
1989
HADDOCK
Research vessels
Nr of fish
I
Market sam lin
Nr of fish
Other
I
Season INr samp.
1989
WHITING
IV a
1
2/3
I Vb
1
2/3
3
4
IVc
1
2/3
I Vb
1
2
3
4
I Vb
2
3/4
Via
2
VIIb
2
Vlle
2
VIIg-k
2
I
49 2)
25 2)
1762)
98 2)
1062)
27 2)
I
22)
202)
44)
404)
39 4)
144)
I
124 5)
1245)
I
I
I
I
Meas.
Aged
8 358
3 542
353
575
10 067
15 157
6 289
850
853
1 198
163
1 300
-
I
Other
I Nrsamp.
I
I
I
I
I
I
I
I
I
6
200
147
39
230
469
I
I
I
I
12) I
10
10
197
123
I
62>!
60
60
2384
333
1) Samples taken on board of commercial trawler
2) Groundfish surveys
4) Shrimp bycatch investigations
5) Young Fish and Brown Shrimp Survey
Meas.
Aged
F.R.G.
Market sampling
Nr of fish
-
24 2) I
22)
Nr samp.
I
Research vessels
Nr of fish
Area
F .R.G.
I
I
I
I
I
I
Meas.
Aged
- 14 SAMPLING DATA FOR:
--
Ar:ea
Vb
----
Season INr samp.
1
4
Vla,b
1
XIV
3
4
I
I
I
1
I
1
I
1
SAMPLING DAT A FOR :
Area
Ila
IVa
Season INr samp.
1
4
I
1
2
3
4
Via
1
Via/VII
2
I
I
225
479
130
I Meas.
-
Aged
296
151
-
-
-
790
471
329
41
I
I
Season INr samp.
I
Meas.
I
I
145
145
1
1
Season INr samp.
110 2)
12)
56 2)
4
-
I Vb
1
2
3
4
224)
113 4)
1244)
164)
I Vb
2
3
I
Meas.
Aged
I
2
I
561
291
1 645
403
807
282
I
Meas.
Aged
3 026
49
510
1 172
I
4
2
I
I
F.R.G.
I Nr samp. I
4
3
I
4
10
12
5
I
4
I
1989
I
I
Other
I
I Nr samp. I
1
2) Groundfish surveys
4) Shrimp bycatch investigations
5) Young Fish and Brown Shrimp Survey
I
Aged
2 183
1420
1 081
693
2 098
4 537
5 902
2 888
1 073
2 373
2 963
1 368
1 651
945
Meas.
Aged
F.R.G.
Market sampling
Nr of fish
156
1 749
2 253
66
1 263
1 095
Meas.
I
1989
-
Nr of fish
F.R.G.
Market sampling
Nr of fish
I
I
Other
I
I Nr samp. I
SOLE
Research vessels
Nr of fish
-
5)
5)
Other
POLLACK
Research vessels
Nr of fish
I
Aged
I
Market sam lin
-
1
Nrsamp.
1989
-
I
I
I
130
-
1
Other
479
-
1
Nr of fish
-
288
1
2/3
3
I Vb
365
886
SAMPLING DATA FOR:
Area
Aged
1
I
I
VI
Meas.
F.R.G.
Market sam lin
SAITHE
Research vessels
Nr of fish
I
-
SAMPLING DATA FOR:
Area
I
I
-
1989
BLUE LING
Research vessels
Nr of fish
I
Meas.
Aged
285
285
- 15 SAMPLING DATA FOR:
Market sampling
Nr of fish
Research vessels
Nr of fish
Ar.ea
I
Meas.
Aged
102) I
679
-
5 879
1 665
8 345
2 111
-
796
144
-
Season INr samp.
IV a
1
I Vb
1
2/3
3
4
IVc
1
2/3
I Vb
1
2
3
4
I Vb
2
3/4
I
138 2)
32 2)
84 2)
27 2)
I
2 2)
4 2)
I
264)
97 4)
824)
484)
I
124 5)
124 5)
SAMPLING DATA FOR:
Other
I Nr samp. I
I
I
I
I
I
I
I Vb
Season INr samp.
IVc
2/3
I Vb
1
2
3
4
I Vb
2
3
I
22)
264)
1404)
133 4)
494)
I
124 5)
124 5)
Aged
901
1 591
1 855
8 492
I
3 005
5 526
I Meas.
Aged
3 697
2 387
749
3 635
94
1 714
I
I
F.R.G.
1989
PLAICE
93 2)
1102)
412)
109 2)
27 2)
1
2
2/3
3
4
Meas.
2 031 3)
Research vessels
Nr of fish
Area
F.R.G.
1989
DAB
Market sampling
Nr of fish
Other
I Nr samp. I
-
33
I
I
I
I
3 874
16 484
8 396
7 091
4 010
6 400
2) Ground.fish surveys
3) Tagged
4) Shrimp bycatch investigations
5) Young Fish and Brown Shrimp Survey
110
140
Meas.
Aged
.. .
- 16 SAMPLING DATA FOR:
1989
FLOUNDER
Research vessels
Nr of fish
Area
I Vb
I Vb
Season INr samp.
2
2/3
I
1
2
3
4
I Vb
2
3
I
I
Meas.
Aged
Other
I
F.R.G.
Market sarnolin
Nr of fish
Nr samp.
I
Meas.
Aged
1612~
3 2)
40
13 4)
1264)
97 4)
314)
238
1 098
516
98
124 5)
124 5)
I
1 080
642
2) Groundfish surveys
4) Shrimp bycatch investigations
5) Young Fish and Brown Shrimp Survey
SAMPLING DATA FOR:
1989
GREENLAND HALIBUT
Research vessels
Nr of fish
Area
XIV
Season INr samp.
3
4
I
5
22
SAMPLING DATA FOR:
I Meas.
Aged
Other Nr ~amp. Meas.
I
Aged
25
258
25
258
I
4
I
595
I
1989
S e.lw.s.te.s. marinus.
Research vessels
Nr of fish
Area
Season INr samp.
Ila
1
2
XIV
3
I
I
97
I Meas.
II
Aged
Other
Ila
Vb
XIV
I
Meas.
I
I
1989
Aged
Other
I Nr samp. I
1
;I
3
I
65
II
I
9 032
403
1 105
100
100
.
2
1
1
I
Aged
F.R.G
Market sampling
Nr of fish
1
2
4
4
Meas.
725
Research vessels
Nr of fish
Season INr samp.
2
2
I
12 272
F.R.G.
Market sarn lin
Nr of fish
I Nr samp.
SAMPLING DATA FOR : S efJastes mentella
Area
F.R.G.
Market sarn lin
Nr of fish
625
I
I
Meas.
Aged
871
227
366
81
76
103
618
2 445
200
484
···,·....
,•
·.···~
.·.
- 17 -
FINLAND
(E. Aro)
No work was carried out on dernersal fishes other than that reported to the Baltic Fish
Committee.
;'Y.-
:.:::·
...._. . .;:'
·;.•···· ·.· ·.<->
- 18 -
FRANCE
(A.Souplet)
SAMPLING DATA FOR:
1989
WHITING
I
I
I
Aged
2484
536
-
2 848
697
-
1 133
562
296
399
Market
12
-
28
Season
IV a
1
I Vb
1
IVc
1
2
4
10
-
1
1
1
2
3
4
4
-
1
1
4
3
12
-
1
2
3
4
-
12
-
12
Vllf,g
Vllla,b
1
1
2
2
3
3
4
4
-
12
12
12
-
21
-
8
-
31
-
7
-
8
-
30
-
15
SAMPLING DATA FOR:
I
I
Measured
Res. vessels
Area
Vlld
Season
IV a
1
I Vb
1
Via
1
2
3
4
Vllla,b
1
I
I
I
I
296
328
518
656
355
487
123
413
638
1 249
721
658
625
617
692
609
561
220
315
509
377
844
235
2 525
-
-
112
-
1989
HADDOCK
Nr of samples
Area
FRANCE
Nr of fish
Nr of samples
FRANCE
Nr of fish
Res. vessels
Market
12
-
8
-
-
33
16
30
34
-
-
I
I
I
I
Measured
Aged
2 457
931
377
220
2 509
1 044
1 913
2 374
-
14
-
-
-
·\''
- 19 SAMPLING DATA FOR:
1989
Nr of fish
COD
Nr of samples
Area
Season
I Ya
1
I Vb
IVc
Via
I
Market
I
I
Measured
Aged
227
220
12
-
1
22
-
521
439
1
2
3
4
13
-
148
-
1
1
1
-
135
283
405
285
1
2
3
4
-
3
3
3
3
531
438
468
394
345
320
336
259
-
1
114
-
-
5
4
Vila
4
Vlld
2
3
4
4
Vllf,g
I Res. vessels
FRANCE
-
-
I
I
8
-
-
2
1 275
249
24
121
1
-
2
3
4
-
3
3
3
3
955
768
1 159
116
-
SAMPLING DATA FOR:
-
24
278
265
326
313
-
1989
Nr of fish
SAITHE
Nr of samples
Area
Season
I
Res. vessels
Market
I
Measured
Aged
IV a
1
I
5
-
I
27
25
-
60
60
59
60
1 023
2 058
2 055
1 900
390
482
432
390
-
3
3
3
3
531
438
468
394
345
320
336
259
Via
1
2
3
4
Via
1
2
3
4
FRANCE
·•
..
- 20 -
SAMPLING DATA FOR:
1989
Nr of fish
POUT
Nr of samples
I
I
Area
Season
I Vb
1
IVc
1
2
3
6
1
Vlld
Res. vessels
Market
2
-
2
3
4
4
Vllla,b
4
SAMPLING DATA FOR:
Vile
Vllla,b
I
230
341
510
1
212
1 093
366
1 571
241
- I
4 663
548
-
1
-
4
6
3
-
-
2
2
2
2
896
886
950
776
89
169
140
106
-
-
480
494
33
250
263
-
NORWAY POUT
I Nr of samples
Arca
Season
IV a
1
I Vb
1
I
I
Season
IVa
1
2
I
I
FRANCE
Aged
1 074
67
- I
370
92
-
1989
Nr of fish
HAKE
Nr of samples
FRANCE
Res. vessels
Market
I
Measured
Aged
-
24
I
783
358
-
13
534
208
498
764
-
13
Vllb,f,g,
1
h
2
3
4
-
8
19
22
Vllla,b
1
1
-
61
23
2
2
3
3
4
4
1989
Nr of fish
Measured
12
3
-
I
I
Market
SAMPLING DATA FOR:
Area
I
Res. vessels
I
I
FRANCE
Aged
1
SAMPLING DATA FOR:
-
Measured
2
3
4
1
-
1989
Nr of fish
POLLACK
Market
2
4
-
Res. vessels
Season
2
311
235
Nr of samples
Area
Aged
-
1
-
Measured
72
-
-
19
I
I
I
FRANCE
-
40
48
29
-
67
-
52
-
50
-
2 688
2 566
3 419
6 604
3 388
5 890
2 464
14 788
130
-
400
..
- 21 -
SAMPLING DATA FOR:
1989
LING
Area
Season
VIie
1
2
3
4
VIIf,h,j
Vllla,b
I Res. vessels
SAMPLING DAT A FOR :
VIIf,g
Season
I
23
41
35
25
475
815
615
193
348
279
207
-
-
40
40
I
Market
-
8
SAMPLING DATA FOR:
I
VII
(- d,e)
VIIIa,b
Season
-
4
Aged
136
24
2
415
38
Market
-
-
-
SAMPLING DATA FOR:
I
-
-
-
Season
Vlld
1
2
3
4
4
Vllla,b
4
I
I
Market
-
8
6
8
Aged
5 688
6 752
3 802
4 319
240
333
387
327
580
250
Aged
390
598
492
118
-
8
-
- I
1 979
-
Season
VIie
1
2
3
4
Vllla,b
4
I
I
-
1989
BASS
Nr of samples
Area
FRANCE
Measured
-
-
SAMPLING DATA FOR:
I
769
1 100
950
493
1 094
34
-
Nr of fish
Res. vessels
-
316
FRANCE
1989
RED GURNARD
I
-
Measured
Nr of samples
Area
;~
Nr of fish
I Res. vessels
I
FRANCE
1989
MEGRIM
1
2
3
4
177
Measured
Nr of samples
Area
-
Nr of fish
Res. vessels
2
3
-
1989
BLUE LING
1
-
-
Nr of samples
Area
Aged
Measured
1 103
1 548
1 279
896
-
I
I
2
2
2
2
-
1
2
3
4
4
Market
-
FRANCE
Nr of fish
Nr of samples
FRANCE
Nr of fish
I
Res. vess<ls
Market
-
2
2
2
2
-
- I
Measured
Aged
74
187
305
138
31
49
102
30
20
-
- 22 -
SAMPLING DATA FOR:
I Nr of samples
~
VIIla,b
Season
I
Res. vessels
4
I
-
SAMPLING DATA FOR:
1989
BLUE WHITING
Nr of fish
I
I
Measured
Aged
- I
12 585
-
Market
1989
PLAICE
Season
IV a
1
I Vb
1
IVc
1
2
3
4
VIId
VIIIa,b
I
I
I
Res. vessels
Market
8
-
21
-
1
2
3
4
4
4
11
-
-
2
1
1
-
22
-
-
19
- I
-
I
SAMPLINGDATAFOR:
I
I
I
14
30
17
-
-
Measured
Aged
29
13
1 243
537
281
700
468
700
263
Season
IV a
1
I Vb
1
IVc
1
Vlld
1
2
3
4
4
I
I
Season
IV a
1
I Vb
1
IVc
1
VIId
4
439
324
226
101
62
-
1989
DAB
FRANCE
Nr of fish
Market
I
Measured
Aged
11
-
I
1 043
301
26
-
3 851
781
13
-
I
I
706
384
-
8
19
5
-
-
441
1 738
643
-
664
112
234
400
3
315
-
22
SAMPLING DATA FOR:
Area
-
Res. vessels
I
I
I
j
-
696
3 329
1 364
319
1 505
Nr of samples
Area
FRANCE
Nr of fish
Nr of samples
Area
FRANCE
1989
LEMON SOLE
FRANCE
Nr of samples
I
Res. vessels
Market
I
I
I
I
Measured
Aged
307
197
38
27
4
-
83
62
I
I
I
11
-
13
-
3
-
I
7
- I
Nr of fish
;
.·.·.:-:-::--.·:.:-· ...·.
- 23 SAMPLING DATA FOR:
1989
Nr of fish
SOLE
Nr of samples
I Res. vessels
Market
I
Measured
Aged
-
I
2
-
-
3
1 347
484
1 027
-
17
48
41
672
4 369
3 625
6
3 504
252
467
Area
Season
I Vb
1
IVc
1
2
3
4
2
-
2
1
2
1
2
3
4
4
-
Vlld
Vllla,b
I
2
-
-
-
2
1
1
2
2
3
3
4
4
-
34
-
38
22
-
-
50
38
-
-
36
1 921
633
2 405
517
2 207
394
2 090
350
-
33
-
40
-
30
SAMPLING DATA FOR:
WHITE ANGLER*
Nr of samples
Area
VII+VIII
(-Vlld,e)
Vllla,b
Season
I
233
-
282
251
350
1989
Nr of fish
FRANCE
Aged
-
-
2 600
2 580
2 540
2 834
256
250
245
267
-
31
10
-
819
18
563
60
394
27
308
114
-
Market
-
1
1
2
2
3
3
4
4
I
118
Measured
Res. vessels
1
2
3
4
FRANCE
-
30
-
23
-
16
-
19
-
13
-
16
-
65
*LoDhius Discatorius
SAMPLING DATA FOR:
BLACK ANGLER*
Nr of samples
Area
VII+ VIII
(-Vlld,e)
Vllla.b
Season
I
1
2
3
4
4
I
*LoDhius budegassa
I
Res. vessels
Market
-
-
-
- I
1989
Nr of fish
Measured
Aged
1 920
1 900
1 905
1 970
165
168
160
183
54
50
FRANCE
...
- 24SAMPLING DAT A FOR :
1989
RED MULLET
Nr of samples
Area
VIUa,b
Season
Nr of fish
I Res. vessels
Market
-
10
1
2
2
3
4
4
-
-
5
10
-
27
SAMPLING DATA FOR:
I
7
38
Me.asured
Aged
439
650
371
248
544
120
-
1989
NEPHROPS
Nr of samples
Area
Vllla,b
Season
1
1
2
2
3
3
4
4
Market
-
6
-
-
4
29
-
-
4
29
22
FRANCE
Nr of fish
Res. vessels
15
FRANCE
4
-
I
Measured
Aged
388
1 960
528
5 184
630
3 165
473
1 252
-
-
- 25 -
GERMAN DEMOCRATIC REPUBLIC
(B.Vaske)
SAMPLING DATA FOR:
I
Area
Season
Ila
1
Ub
1
XII
2
3
XIV a
2
l
I
I
I
I
SAMPLING DATA FOR:
I
G.D .R
1989
S ebastes mentella
Nr of samples
I
Nr of fish
Res. vessels
Commercial
I
Measured
Aged
-
7
I
1 216
294
-
9
I
1 203
496
-
12
I
3 161
378
499
98
7 096
1 497
1
-
15
11
GREENLAND HALIBUT
Nr of samples
I
G.D.R.
1989
I
Nr of fish
Area
Season
I
Res. vessels
Commercial
I
Measured
Aged
Ub
3
I
-
4
I
-
178
.....
- 26 -
ICELAND
(S.A.Schopka)
The biological sampling programme and research work carried out on demersal fish was
following the same lines as in previous years, i.e. based on research vessel data and market
samples.
Most of the research vessel sampling was collected during the extensive groundfish survey
(600 stations) in March 1989. This survey was made simultaneously on board of five stern
trawlers of the same type.
Market samples were collected at the headquarters of the Marine Research Institute in
Reykjavik and the five branches of MRI located at other important fishing harbours.Also
fishery inspectors collected a considerable amount of data on demersal fish both at the
market and on board of commercial fishing vessels.
The numbers of fish sampled by species are shown in the tables.
SAMPLING DATA FOR:
1989
COD
Nr of samples
Area
Va
Season
I
Res. vessels
1
Nr of fish
Market
I
1 308
90
2
124
3
169
4
246
47
22
32
Total
I
1 847
SAMPLING DATA FOR:
191
I
Season
Va
1
I
Res. vessels
Market
I
959
25
2
53
3
57
4
112
17
10
14
Total
I
1 181
Measured
Aged
90 498
15 549
23 439
4 770
35 414
1 456
25 868
4 456
4 747
2 505
952
2 011
1 306
1 130
1 889
500
201 450
15 040
1989
Nr of fish
HADDOCK
Nr of samples
Area
ICELAND
66
I
Measured
Aged
62 654
3 213
8 339
1 943
10 395
1 462
9 577
2 174
2 555
1 102
332
702
299
223
967
203
99 757
6 383
Counted
ICELAND
Counted
- 27 SAMPLING DATA FOR:
1989
SAITHE
Nr of samples
Area
Va
Season
I
Res. vessels
Markel
I
445
1
23
2
17
3
20
4
35
10
15
6
Total
I
517
SAMPLING DATA FOR:
I
I
Res. vessels
Va
1
I
Hl5
Total
I
105
SAMPLING DATA FOR:
Market
Area
Season
I
Res. vessels
Va
1
I
148
Total
I
148
Season
Va
1
4
Total
I
Market
I
Market
Season
Va
1
4
Total
I
I
280
1
I
281
ICELAND
Nr of fish
4 562
I
2 750
4 562
I
Aged
Nr of fish
Measured
Aged
I
292
188
292
188
1989
I
I
ICELAND
Measured
Aged
494
1
193
495
193
I
I
I
I
Counted
Nr of fish
1989
Market
Counted
ICELAND
I
TUSK
Res. vessels
4 064
2 750
I
I Nr of samples
Area
19 014
Measured
I
75
SAMPLING DATA FOR:
1 162
903
300
498
199
601
201
200
Counted
I
I
I;
74
1
I
3 621
2 561
2 236
943
3 080
1 615
4 495
463
I
BLUE LING
Res. vessels
Aged
1989
I Nr of samples
Area
Measured
1989
LING
Nr of samples
SAMPLING DATA FOR:
I
WHITING
Season
I
54
Nr of samples
Area
ICELAND
Nr of fish
Counted
ICELAND
Nr of fish
Measured
Aged
1 353
3
563
1 356
563
Counted
- 28 -
1989
Nr of fish
S ebastes marinus
Nr of samples
SAMPLING DATA FOR:
Area
Season
Va
1
I
Res. vessels
Markel
I
54 308
497
145
333
3 737
1 765
I 834
3 729
550
6
2
1
3
12
4
40
2
5
13
I
Total
26
603
I
I
Season
Res. vessels
1
Va
Markel
I
8
4
3
4
4
2
1
6
I
Total
46
15
I
S- ebastes vivivarus
Nr of samples
SAMPLING
- -- DATA FOR:
-- - -
Area
Va
-
-
Season
..
I
Res. vessels
1
Market
I
23
13
Va
1
4
Tot.al
181
178
955
159
6 383
Aged
I
I
I
Res. vessels
70
3
73
ICELAND
Counted
108
326
138
464
1989
- - Nr of fish
--
Measured
124 397
Aged
1 108
ICELAND
------
--
Counted
25
7
74
64
I
SIL VERSMEL T
I Nr of samples
Season
123 442
276
1
1
4
7
SAMPLING DATA FOR:
Area
I
7 640
Counted
378
23
2
3
4
Total
Measured
I 381
2 409
1 158
279
853
642
917
36
2
66 348
Aged
1989
Nr of fish
S ebastes men tel la
Nr of samples
SAMPLING DATA FOR:
Area
Measured
ICELAND
Market
I
I
I
I
170
276
1989
Nr of fish
ICELAND
Measured
Aged
Counted
2 285
997
2 652
997
2 652
10
2 295
~
- 29 SAMPLINGDATAFOR:
1989
CATFISH
Nr of samples
Area
Va
Season
j
Res. vessels
I
1
5
2
2
3
4
Total
Market
489
1
31
I
520
SAMPLING DATA FOR:
8
I
Measured
Aged
15 463
192
544
98
250
2 203
100
200
100
16 547
2 603
1989
LUMPSUCKER
Va
Season
I
Res. vessels
Market
Measured
I
42
271
SAMPLING DATA FOR:
I
Va
Season
1989
WITCH
I Res. vessels
1
Market
I
Measured
6
1
'
2
4
5
2
Total
I
173
SAMPLING DATA FOR:
Season
10
I
Va
1
Market
I
3
76
7
3
83
8
3
4
Total
I
223
100
100
500
1989
ICELAND
Nr of fish
64
2
Counted
300
3 351
GREENLAND HALIIlUT
I Res. vessels
ICELAND
Aged
, 2 083
562
229
197
10
270
Nr of samples
Area
Counted
Nr of fish
167
2
Aged
6 632
Nr of samples
Area
ICELAND
1 975
54
4 603
1
41
2
Total
I
271
1
Counted
Nr of fish
Nr of samples
Area
ICELAND
Nr of fish
21
I
Measured
Aged
Counted
1 555
268
2 409
819
1 397
1 578
684
13
793
328
970
208
100
100
91
8 710
1 619
884
........ .....
- 30 -
IRELAND
(E. Fahy)
SAMPLING
DATA FOR:
- -
1989
COD
-
I
Area
Season
VIa-N
1/4
VIa-S
1/4
Vlla-N
1/4
Vlla-S
1/4
Vllb
1/4
VII!!
1/4
I Nr samples~edWeighed Meas. only
I 74 f33 2432 029 2 272
I 56 ~61 3652 068 2 433
I 11 t40 443345 788
I 23 f 88 299793 1 092
I 95 f 17 4191 563 1 882
I
3
SAMPLING DATA FOR:
I -
- 78
Season
VIa-N
1/4
VIa-S
1/4
VIb
1/4
Vllb
1/4
1989
39
Area
Season
VIa-N
1/4
VIa-S
1/4
Vlla-N
1/4
Vlla-S
1/4
Vllb
1/4
Vllg
1/4
I
I
I
I
I
I
Season
17
29
13
20
23
6
VIa-S
1/4
Vllb
1/4
Vllg
1/4
Vlli
1/4
I
1 619
1989
I
I
I
I
I
-
1402 530 2 670
-
2696 854
-
3031 892 2 195
-
3263 609
-
2833 935 4 218
I
-
-1 362 1 362
Total nr
3 935
1989
Nr of fish
Nr samples1edWeighed Meas. only
-643
643
-990
990
34
III-
22
I -
5241 951
38
IRELAND
7 123
HAKE
I
28
Total nr
Nr of fish
I
I
I
I
I
I
921 527
Nr samples1edWeighed Meas. only
SAMPLING DATA FOR:
Area
I 83
WHITING
SAMPLING DATA FOR:
IRELAND
Nr of fish
I Nr samples1edWcighed Meas. only
I 53 f24 2243 319 3 543
I 36 ~02 3022 727 3 032
I 5 179 80816 896
I
Total nr
78
HADDOCK
I
Area
IRELAND
Nr of fish
-2 265 2 265
2 475
Total nr
IRELAND
·.·..,
- 31 -
1989
SOLE
SAMPLING DATA FOR:
I
Area
VIIa-N
Season
1/4
7
Area
Vlla-N
1/4
VIIa -S
1/4
I
I
I
I -
-1 852
1989
T
15
I-
2751756 2031
17
I
3172 048 2 365
-
Season
VIa-N
1/4
VIa-S
1/4
Vlb
1/4
Vllb
1/4
Vllg
1/4
Vlli
1/4
22
Area
Season
VIa-N
1/4
VIa-S
1/4
Vllb
1/4
Vllg
1/4
VII.i
1/4
I
I
I
I
I
I
I -
791 042
1989
I
20
I
I
I
I
-
26
I -
83
54
- 13
13
-277
277
-688
688
2737
737
68282
350
I
Nr of fish
Season j Nr samplesAf;cdWeighed Meas. only
VIa-N
1/4
Vla-S
1/4
Vlb
1/4
Vllb
1/4
Viii!:
1/4
I
I
I
I
I
78
IIII-
38
I -
17
128
5
Total nr
1989
SAMPLING DATA FOR : Loohius a.iscatorius
Area
IRELAND
Nr of fish
Nr samples~edWeighed Meas. only
2
Total nr
1 121
Lophius bude~assa
SAMPLING DATA FOR:
IRELAND
Nr of fish
I Nr samples~edWeighed Meas. only
0
I 1 I- - 0
I 49 I - -6 276 6 276
I 1 I - -124 124
I 20 I - -3 571 3 571
I 20 I - -4 186 4 186
I
Total nr
1989
MEGRIM
I
Area
IRELAND
Nr of fish
Nr samples~cdWeighed Meas. only
SAMPLING DATA FOR:
Total nr
1 852
PLAICE
SAMPLING DATA FOR:
Season
Nr of fish
I Nr samplesAfsedWeighed Meas. only
I
IRELAND
-273
273
-3513
3513
-126
126
-1411
1411
381494
1532
Total nr
IRELAND
- 32 -
THE NETHERLANDS
(F. van Beek)
In 1989 the market sampling of landings of the Dutch fleet from the North Sea was
continued for the following species: brill (Scoohthalmus rhombus), cod (Gadus morhua),
plaice (Pleuronecres olatessa), sole (Solea solea), turbot (Scoohthalmus maximus) and
whiting (Merlangius merlangus). For roundfish the market sampling was stratified on a
Roundfish Area basis. For the other species samples were stratified by harbour. All
samples were also stratified by market category. The tables below indicate the level of
sampling.
In Januari, March and May, surveys were carried out on board of R.V. "Tridens" (3
weeks) and R.V. "Isis" (2 weeks) in the southern and central North Sea with the standard
GOV trawl within the framework of pilot multispecies program.
In February, R.V. "Tridens" (5 weeks) and R.V. "Isis" (3 weeks) participated in the
International Young Fish Survey (IYFS). These surveys, carried out since 1965, estimate
the relative abundance of 1 and 2 year old herring and roundfish.
In the period January-April, R.V . "Tridens" (2 weeks), R.V. "Isis" (6 weeks) and a
chartered vessel (3 weeks) carried out cod and plaice egg-surveys in the North Sea. A
combined egg survey in the period April-July on sole and horse mackerel was carried out
by R.V. "Isis" (10 weeks) in the southern North Sea. The aim of these surveys is to
estimate the egg production and stock size of these species in this area.
In July, 1083 dabs (Limanda limanda) were tagged along the Dutch coast, north of
Terschelling by R. V. "Isis" (2 weeks)
On board of R.V. "Isis", 303 young sole (range 20-26 cm) were tagged along the Danish
coast with the Peterson mini tag in June (2 weeks).
In September-October, R.V. "Tridens" (3 weeks), R.V. "Isis" (4 weeks), R.V. "Stern" (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 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. On board of the
Tridens, the SNS (Sole Net Survey) program was carried out simultaneously. In April, a
SNS survey was carried out on a reduced station grid by R.Y. "Tridens" (3 weeks).
In August, a I3earn Trawl Survey (I3TS) was carried out by R. Y. "Isis" (4 weeks) in the
southern North Sea in collaboration with Belgium in order to investigate the abundance and
distribution of adult plaice and sole in these areas. A similar survey on a reduced station
grid was carried out by R.V. "Tridens" in April in combination with the SNS survey.
In October-November, R.V. "Tridens" (3 weeks) and R.V. "Isis" (3 weeks) carried out a
survey in the southern North Sea with the GOV trawl directed to roundfish. This survey
has been held since 1980 (Dutch Groundfish Survey).
·,-..·
- 33 SAMPLING DAT A FOR :
Area*
NRFA 1
NRFA 2
Season
l
l
2
I
I
I
I
1989
C0 D
Market
Measured
Aged
-
-
-
93
-
-
50
NRFA 3
1
NRFA 5
1
2
3
4
110
426
-
-
1
2
3
4
1 532
838
458
2 274
300
260
150
150
NRFA 6
NRFA 7
Total
1
4
1/4
77
I
I
SAMPLING DATA FOR:
I
Area*
Season
NRFA 1
1
NRFA 2
1
NRFA 3
1
NRFA 6
4
Total
1/4
I
I
I
I
I
I
I
I
I
I
-
-
-
44
-
5 808
910
Market
Aged
-
-
-
-
-
-
-
-
-
-
140
35
39
4
123
-
569
I
I
I
Measured
Aged
3
HADDOCK
* North Sea Roundfish Sampling Areas
THE NETHERLANDS
Research vessels
I
I
I
I
I
I
3
56
972
1989
THE NETHERLANDS
Research vessels
Aged
194
98
141
4
437
- 34 SAMPLING DATA FOR:
1989
THE NETHERLANDS
Research vessels
WHITING
Market
Area*
Season
NRFA 1
1
NRFA 2
1
2
Measured
Aged
I
Aged
I
-
-
I
128
I
37
-
I
-
-
I
114
I
-
I
104
NRFA 3
1
NRFA 5
1
2
3
4
106
274
530
50
100
-
-
-
69
1
2
3
4
1 582
875
548
1 920
200
100
100
200
155
-
-
I
92
5 872
750
I
1 709
NRFA 6
I
NRFA 7
Total
1/4
SAMPLING DATA FOR:
Area*
Season
-
88
-
959
1989
THE NETHERLANDS
Research vessels
NORWAY POUT
I
Market
I
Measured
Aged
I
I
-
-
-
-
I
I
I
I
Aged
NRFA 1
1
NRFA 2
1
NRFA 3
1
I
-
-
I
36
1/4
I
-
-
I
147
Total
'
77
34
* North Sea Roundfish Sampling Areas
SAMPLING DATA FOR:
1989
THE NETHERLANDS
Research vessels
PLAICE
Market
I
I
Measured
Aged
1
2
3
4
-
1 378
1 010
1 015
960
1 241
468
1 614
Waddensea
4
-
-
248
Zeeland
estuary
4
-
-
-
4 363
Area
IV
Total
Season
1/4
-
-
I
I
I
Aged
-
I
124
I
I
3 695
- 35 SAMPLING DATA FOR:
1989
SOLE
Season
I
D-IE NETHERLANDS
Research vessels
Market
I
Aged
Measured
Aged
1
2
3
4
-
901
1 427
799
772
635
306
723
Waddensea
4
-
4
-
-
I
I
65
Zeeland
estuary
I
I
-
62
1/4
I
-
3 899
I
1 791
Area
IV
Total
SAMPLING DATA FOR:
-
1989
TURBOT
Market
Area
IV
Zeeland
estuary
Total
Season
I
I
Aged
1
2
3
4
709
672
665
977
98
72
138
160
16
84
85
4
-
-
1
3 023
468
1/4
I
I
-
I
I
Zeeland
estuary
Total
Season
I
Aged
1
2
3
4
482
346
477
475
99
32
96
131
4
-
-
I 780
358
1/4
I
SAMPLING DAT A FOR :
I
IV
Season
I
Aged
33
64
67
7
I
I
DA Il
171
1989
Market
Area
Measured
THE NETHERLANDS
Research vessels
Measured
I
186
1989
BRILL
Market
IV
Aged
Measured
SAMPLING DATA FOR:
Area
D-IE NETHERLANDS
Research vessels
THE NETHERLANDS
Research vessels
Aged
I
Aged
2
3
4
-
-
-
-
740
370
1 467
Waddensea
4
-
-
154
Zeeland
estuary
4
-
-
-
-
Total
1/4
I
I
I
I
I
I
57
2 788
"'.···:..·.·.·:
- 36 -
SAMPLING DATA FOR:
Area
IV
Season
1
2
3
4
Lake
2
IJsselmeer 3
Lake
2
Haringvliet 3
Total
I
1/4
1989
FLOUNDER
Market
Measured
Aged
-
276
104
135
-
I
161
142
-
I
-
139
92
I
-
1 049
Aged
347
175
-
I
-
D-ffi NETHERLANDS
Research vessels
I
-
I
-
I
522
- 37 -
NORWAY
CT.Jakobsen & O.M.Smedstad)
Sub-areas I and II.
Routine research surveys were carried out as in previous years, accounting for most of the
activity at sea. In addition, there was some activity linked to short term projects, mostly
concerning the spawning process and distribution of eggs. A new experiment which may
be developed into a routine, was to use 15 commercial trawlers for a one-week bottom
trawl survey in the Barents Sea/Svalbard area.
The abundance of young cod and haddock and redfish species in the Barents Sea was
investigated during a combined acoustic and stratified bottom trawl survey in JanuaryMarch. 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 studied in the central Barents Sea in April-May
and in the Svalbard area in July-August. The distribution and abundance of cod, haddock,
redfish, and Greenland halibut was investigated in the Svalbard area in September-October.
Part of this study was included in a multi-species acoustic survey carried out together with
U.S.S.R. vessels during the same period, when the distribution of cod, haddock, redfish
and some pelagic species was investigated also in the Barents Sea.
Stomach samples from cod and haddock were collected on all routine surveys for
cod/haddock in the Barents Sea and at Svalbard. Stomachs were also sampled on other
surveys in the Barents Sea in April-June.
In November a bottom trawl survey with 15 c.o mmercial trawlers was carried out during
one week in the Barents Sea under the supervision of the Institute of Marine Research. The
results of the experiment were promising and the intention is to repeat the survey next year.
About 2000 spawning cod of the coastal type were tagged in the Porsangerfjord southeast
of North Cape in April-May. Also during this cruise the distribution of eggs of the coastal
cod from spawning grounds in the Finnmark fjords was studied, and samples were taken
of commercial landings of cod.
Investigations on cod larvae in the Lofoten area were carried out in April-May. The postlarvae were studied in July-August. In August-September the International 0-group
Survey, aimed primarily at cod, was carried in the Barents Sea and adjacent waters in
cooperation with U.S .S.R. vessels.
Studies on the spawning of haddock were carried out in April-May.
Investigations on the vertical distribution of saithe eggs were carried out in March-April.
An 0-group (post-larvae) survey for saithe was carried out north of 62° N up to the Lofoten
islands in April-May, and an acoustic survey for saithe (including also redfish) was carried
out on the coastal banks from North Cape down to 62° Nin November.
The sampling programme for commercial catches of cod, haddock, saithe, redfish and
Greenland halibut was continued.
- 38 Sub-area IV.
The distribution and abundance of I- and II-group gadoids was studied in JanuaryFebruary as part of the International Young Fish Survey. During the annual acoustic survey
for saithe in February, weather conditions prevented the programme from being carried
out. In April, the distribution of saithe post-larvae in the North Sea was studied. The
distribution and abundance of sandeel in the North Sea was investigated during a survey in
April. The sampling of commercial catches of saithe, sandeel and Norway pout was
continued.
- 39 -
POLAND
(J.Janusz and M.Liwoch)
No biological samples were collected in the northeast Atlantic area by Poland.
•
- 40 -
PORTUGAL
(F.Cardador)
During 1989 the National Institute of Fisheries Research (INIP) has continued the National
Sampling Programme at the main fishing ports. The main objective of this sampling
programme is to provide length frequency distributions of the landings of the commercial
species.
INIP has conducted two groundfish surveys on board of the RN "NORUEGA". These
surveys covered the entire coast and the main goal was to estimate distribution and indices
of abundance and recruitment of the most important species. Those surveys took place in
summer (July/August) and in autumn (October/November).
A special survey took place in September on board of RN "NORUEGA" to delineate and
to map the topography of the bottom of some areas off the Portuguese coast. Some fishing
operations were realized with bottom trawl nets mainly directed to shellfish.
Also, groundfish surveys on board of RN "MESTRE COSTEIRO" were carried out in
June, July, September and December, in order to estimate the distribution and catch rates of
monkfish and cephalopods along the south-west and south coast of Portugal.
The following tables present the sampling data collected for hake (Merluccius merluccius),
black scabbard fish (Aphanoous carbo), three species of seabreams (Booos boons,
Pagellus acarne and Soondyliosoma cantharus) and monkfish (Loohius buderwssa and L.
viscatorius).
SAMPLING DATA FOR:
1989
Nr of fish
HAKE
Nr of samples
Area
Xa
Season
I
Res. vessels
Market
-
136
111
213
197
158
177
247
745
1
2
3
4
Total
I
SAMPLING DATA FOR:
I
19
20
24
16
I
Season
IX a
1
2
3
4
Total
I
Res. vessels
Market
-
35
20
31
14
-
100
-
-
I
I
962
075
345
587
1989
Nr of fish
Measured
2 700
1 960
2 908
1 320
I
Aged
80 969
BLACK SCABBARD FISH
Nr of samples
Area
Measured
PORTUGAL
8 888
Aged
PORTUGAL
- 41 -
1989
B ooos booos
Nr of samples
SAMPLING DATA FOR:
Area
Season
IX a
1
2
3
4
I
Market
21
29
30
34
32
33
50
129
SAMPLING DATA FOR:
I
I
Season
IX
1 516
1 772
2 671
2 555
I
8 514
Pa~ellus acarne
1989
Market
19
19
27
32
37
36
38
132
I
Total
I
I
Area
IX
~-
-
- -
-
Season
I
Res. vessels
Market
-
8
4
23
26
27
25
12
101
1
2
3
4
Total
I
SAMPLING DATA FOR:
Area
Season
IXa
1
2
3
4
Total
I
I
109
717
042
509
13 377
S oondvliosoma cantharus
Nr of samples
-
1989
Aged
Measured
386
1 001
744
1 204
I
3 335
1989
MONKFISH*
PORTUGAL
Nr of fish
Res. vessels
Market
12
32
11
90
80
79
61
55
310
* Louhius budegassa &
PORTUGAL
Nr of fish
Nr of samples
I
Aged
Measured
2
2
4
4
SA11PLING
- - -- DATA FOR:
-
PORTUGAL
Nr of fish
Res. vessels
1
2
3
4
I
Aged
Measured
Nr of samples
Area
PORTUGAL
Nr of fish
Res. vessels
I
Total
-~
Louhius uiscatorius
I
Measured
1 501
951
1 021
615
I
4 088
Aged
- 42 -
SPAIN
(F.J .Pereiro)
In 1989 two groundfish surveys have been conducted, one covering the continental shelf of
Galicia (IXa North + VIIlc West) and the other one Division VIIlc. The main aim of these
two bottom trawl surveys was to estimate recruitment indices of hake and abundance
indices of the demersal species (e.g. hake, me grim, monk) in these waters. The first survey
took place in September (12-27) and the second one in October (2 -18). Both were carried
out by RN "F.de P.Navarro".
Over the year a sampling programme at sea was developed to investigate the species
composition, length distribution and discards of the total Spanish fleet fishing in Subarea
VIL The number of hauls per quarter sampled and the number of fish measured on board
are shown by species in the table below.
SPECIES
Quarter
1
2
3
4
Nr hls sampled
-
40
67
69
-
3 805
6 485
1 603
1 089
1 062
3 255
8 646
916
4 105
1 295
5 004
4 763
2 011
1 203
1 155
M erluccius merluccius
Lepidorhombus whiffiagonis
Lepidorhombus boscii
Lophius budegassa
Lophius piscatorius
-
Numbers of samples and numbers of fish measured and aged on board of research vessels
and in the market sampling programme are given in the next tables.
SAMPLING DATA FOR:
1989
HAKE
Nr of samples
Area
VI
Season
1
4
VII
Vllla,b
Vlllc
Res. vessels
Market
2
8
I
I
I
Measured
434
581
1
2
3
4
27
29
28
33
6 139
6 916
5 978
7 354
1
2
3
53
77
48
4
57
7 373
8 733
7 345
10 851
1
67
96
71
72
5 694
9 608
16 554
8 317
36
25
20
19
3 725
2 740
6 678
2 593
2
3
4
IX a
I
29
40
1
2
3
4
19
SPAIN
Nr of fish
Aged
---- -··--
- 43 1989
Nr of fish
L. whif.Jin.%..onis
Nr of samples
SAMPLING DATA FOR:
Area
Season
I Res. vessels
I
I
I
Market
4
VII
1
2
3
4
26
23
24
27
4
4
3
4
VIIIa,b
1
2
3
4
12
15
18
22
2 066
1 526
2 569
i 982
VIIIc
1
2
3
4
19
30
38
30
415
2 651
3 667
2 474
3
27
35
I
SAMPLING DATA FOR:
-
-
I
4
Levidorhombus boscii
- -
Nr of samples
I
I
5
1989
- - Nr of fish
-
Season
VII
1
2
3
4
26
23
24
27
346
620
1 116
998
VIIIa,b
1
2
3
4
7
15
18
22
46
274
398
528
VIIIc
1
2
3
4
19
30
38
30
1 039
1 764
3 948
2 705
12
10
9
12
1 017
1 018
1 284
1 317
IX a
1
2
3
4
27
35
16
Market
473
447
722
234
Area
Res. vessels
Aged
434
VI
IX a
2
Measured
SPAIN
Measured
Aged
SPAIN
- - - --
- 44 -
SAMPLING- DATA FOR:
-
-
Lovhius viscatorius
1989
Area
Season
I
I
Res. vessels
Market
I
I
Measured
·v1
4
VII
1
2
3
4
20
21
21
25
1 178
1 376
1 526
1 237
Vllla,b
1
2
3
4
17
52
28
33
1 318
2 119
1 437
1 541
VIiie
1
2
3
4
25
34
27
34
477
1 248
568
1 080
IX a
1
19
33
6
82
161
SAMPLING DATA FOR:
Lovhius buderrnssa
1989
Nr of samples
I
I
Season
VII
1
2
3
4
20
21
22
21
1 794
1 917
1 495
1 563
Vllla,b
1
2
3
4
17
42
27
33
1 732
2 353
1 604
1 854
Vlllc
1
2
3
4
25
35
26
34
460
771
272
514
5
4
2
11
377
208
52
490
1
2
3
4
Res. vessels
8
19
6
SPAIN
Nr of fish
Area
IX a
Aged
7
29
8
1
2
3
4
SPAIN
Nr of fish
Nr of samples
Market
Measured
Aged
.. .
- 45 Page flus bogaraveo
Nr of samples
SAMPLING DATA FOR:
I
I
Res. vessels
Market
Area
Season
VII
3
VIIIa,b
1
2
3
2
1
2
3
4
16
20
VIIIc
1
8
1
17
9
I
I
1989
SPAIN
Nr of fish
Measured
45
31
307
31
468
731
307
193
Aged
- 46 -
SWEDEN
(P-0.Larsson)
Sweden took part in the International Young Fish Survey in the North Sea and Division
Illa.
A transfer experiment with plaice was evaluated. About 2500 captured plaice from the
northern Kattegat were moved to the northern Skagerak coast of Sweden and released after
tagging. Most of them were 2 years old (15-30 cm, average ca 22 cm; fig 1). The
recaptures reveal an immediate southward migration along the Swedish coast to the
southern Skagerak followed by a westward movement all the way out into the North Sea
(fig 2). Some late recaptures, not included in fig 2, were reported from England. Plaice
recaptured in the western Skagerak were in some cases reported to be spawning.
35
30
25
20
%
. ....
·•· Tagged
/
15
'\.
/
10
...
5
..r·
-G Recaptured
·~.
-1-·
0
··~=:•
10
15
---·
20
25
30
35
Total length (cm)
Figure 1. Length frequency distribution of tagged and recaptured plaice.
40
- 47 -
.
.. . ,:{·;:n2~:;::n::~:1:::~t:~:fi:;:::~:;frn:;::ft~2%:%
.-............ . .... . . . .
~j~-fj~~~;~rw··-
®
- ~l;~~if:!i,\ll~li
·. •¥:)::~/~:~:::):(:::~?(:::)::~:~:::):
· :i:;~~;~!~~~~:~ji
~~~~~~~~~~~~~~~~~~~~~·
®
®
®
®
®
CT
~i~Wl~~:~~~~:~,?.JH!
~-----------+--:~..J,.-:~i!~~j~fl
~I
Figure 2. Transfer of plaice (arrow) and subsequent recaptures.
.?%{~
- 48 -
UNITED KINGDOM (England and Wales)
(C.T.Macer)
The market sampling programme was continued in 1989. Details of number of fish
measured and otolithed are available on request.
The following research vessel cruises took place in 1989:
- R.V. "CIROLANA" participated in the North Sea International Young Fish Survey
in February, and carried out bottom trawl surveys in the western Celtic Sea in March
and in the North Sea in August/September.
- Data for gastric evacuation studies were collected in December.
- Plaice fecundity studies were made on R.V. "CORYSTES" in January in the
southern North Sea, and sole spawning was investigated in the Bristol Channel in
April and in the eastern Irish Sea and Bristol Channel in September.
- A survey to measure the distribution and abundance of commercial flatfish species
in the eastern English Channel was carried out in August.
- A survey for 0- and 1-group gadoids was made in the north-western Irish Sea in
September.
- Vessels were chartered to carry out trawl surveys along the north Wales coast in
June and October/November, and to obtain data on the timing of ovulation in Irish
Sea sole in May.
- Hatchery reared sole were released into the Irish Sea in September and wild sole
were tagged. Sole were also surveyed in the western English Channel in September.
- An inshore beam trawl and push net survey took place between Flamborough Head
in the North sea to Swanage Bay in the English Channel to collect data for juvenile
year class determination.
- The incidence of fish diseases in the north-eastern Irish Sea was investigated in
September.
- 49 -
UNITED KINGDOM (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
reserach vessels. Most of the data collected are used by the ICES Roundfish Working
Group (RF\VG) and Industrial Fish Working Group.
During 1989 sampling continued at the same level as in previous years. port samples are
stratified by month, gear type and sea area. The numbers of fish sampled summarised by
ICES sub-areas and Divisions are given in the table below.
I
Species
measured
57
108
77
15
22
20
*9
Cod
Haddock
Whiting
Saithe
Lemon sole
Plaice
Sandee I
157
630
306
433
806
145
322
aged
Rockall (Vlb)
West of Scotland (Vla)
North Sea (IV)
I
meas med
11
26
26
8
3
4
7
12 958
12 560
7326
6 811
2 989
3 764
*1 123
750
667
157
166
504
955
579
aged
I
4 114
4 768
3 612
3 155
798
791
905
measured
aged
653
7 7(:JJ
434
1 236
-
-
502
1 463
328
282
-
-
*: mostly from Shetland.
In 1989, approximately 70 commercial vessels were sampled for discards. This amounted
to a total of 604 individual hauls in the North Sea and 167 to the West of Scotland. 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 Sea (IV)
I
Species
Cod
Haddock
Whiting
Saithe
measured
aged
12 960
53 446
42 769
414
2657
3767
3666
209
West of Scotland (Vla)
I
measured
aged
813
5 694
10 202
209
305
705
1 019
12
I
The following bottom trawl surveys were carried out for groundfish:
Vessel
Area
Period
Comment
Scotia
Scotia
Scotia
Scotia
Clupea
North Sea (IV)
West of Scotland (Vla)
North Sea (IV)
Rockall (Vlb)
Clyde (Vla)
February
March
August
September
November
IYFS Commitment
Indices used by RFWG
SGFS, indices used by RFWG
Indices used by RFWG
New survey, results not vet available
In addition, a commercial vessel was chartered in August for a survey of recruiting
.sandeels at Shetland.
.•; ,•.,•.•;;:
------- ----------------- -
-so U.S.A
CV.Anthony and B.Rothschild)
The U.S .A. had no fisheries and no research activity on demersal fish in the ICES area in
1988. Activities in the Northwest Atlantic have been reported to NAFO.
- 51 -
U.S.S.R
(G.I.Lukka)
In 1989, as previously, trawl, trawl-acoustic and ichthyoplankton surveys were conducted
to assess abundance and biomass of the main commercial fish species, and the potential
recruitment of coo, haddock, redfish and other fish species in the Barents Sea and adjacent
waters.
Investigations were continued to determine the influence of hydrological conditions and
food supply on fish distribution and behaviour. Population structure, dynamics of their
biological characteristics and migration patterns of major commercial fishes were studied.
The investigations of the food web between fish stocks were in progress.
The tables present the information collected during 1989
SAlvfPLING DATA FOR:
Area
I
Season
I
Ila
Total
985
107
422
745
617
300
3 082
1 152
-
150
852
75
1 593
866
1
2
3
4
49 791
7 939
1 100
2 899
4 648
1 419
346
887
1 968
663
100
113
210 362
23 339
9 499
1/4
Season
1
2
3
4
Ilb
I
I
HADDOCK
1989
Nr of fish
MeasuredFeeding investigations
13
5
18
4
638
-
U.S.S.R.
Aged
170
340
446
209
1 510
674
1 729
813
2
3
4
381
5
274
25
-
-
-
77
77
1
6 149
3 869
885
1 829
820
792
75
589
353
371
341
54 557
7 104
3 973
2
3
4
Total
2
2
5
2
Aged
678
6 265
487
6 502
I
Ila
836
418
282
166
Feeding investigations
U.S.S.R
1
2
3
4
SAlvfPLING DATA FOR:
Area
Measured
31
22
58
22
I
2
3
4
Ilb
1989
Nr of fish
COD
1/4
I
384
600
1 208
639
-
:. ,
- 52 SAMPLING DATA FOR:
1989
REDFISH
U.S.S.R.
Nr of fish
Area
I
Ilb
Ila
Total
Season
I
Measured.Feeding investigations
Aged
125
-
-
-
1
2
3
4
791
2 582
4 048
2 069
1
2
3
4
564
8 289
731
3 707
-
-
200
200
1
2
3
4
4 266
9 580
1 866
6 486
976
1 485
75
584
551
950
1/4
44 979
4 652
2 792
SAMPLING DATA FOR:
GREENLAND HALIBUT
200
182
132
150
675
600
1989
-
-
359
U.S.S.R.
Nr of fish
Area
I
Ilb
Ila
Total
Season
I
Measured.Feeding investigations
Aged
2
3
4
189
50
273
25
1
2
3
4
1
2
3
4
1/4
I
SAMPLING DATA FOR:
-
-
-
55
38
1 439
1 322
5 840
6 350
300
149
800
1 192
24
300
602
760
262
901
6 996
350
67
100
994
496
24 382
4 032
1 827
SAITHE
1989
-
300
67
-
U.S.S.R.
Nr of fish
Area
I
Ila
Total
Season
I
Measured.Feeding investigations
1
2
3
4
66
51
1
2
3
4
1/4
I
Aged
-
-
-
-
25
-
554
340
7
8
75
45
20
1 030
145
-
-
-
20
- 53 SAMPLING DATA FOR:
WOLFFISHES
1989
U.S.S.R.
Nr of fish
Area
Season
I
Ilb
Ila
3
180
22
22
389
286
947
291
2
3
4
238
98
574
-
-
278
277
1
4
115
28
114
-
-
61
23
6
59
3 084
961
548
2
3
4
Total
4
387
180
2
3
4
1
I
Aged
MeasuredFeeding investigations
1/4
I
SAMPLING DATA FOR:
LONG ROUGH DAB
1989
1
-
6
U.S.S.R.
Nr of fish
Area
Season
Ilb
Aged
-
-
326
300
-
632
1 389
5 084
25
150
578
-
3
4
1
2
3
4
4
446
654
1 822
-
-
150
50
253
150
200
22 203
1 832
623
72
2
Ila
MeasuredFeeding investigations
1 133
4 734
6 233
1
2
3
4
I
Total
I
1/4
I
SAMPLING DATA FOR:
PLAICE
1989
273
-
U.S.S.R.
Nr of fish
Area
Season
I
I
1
2
3
4
Total
1/4
[[Grand Total
I
Measured.Feeding investigations
Aged
-
-
115
23
1 025
11
-
-
184
79
167
1 174
263
167
361 771
42 218
19 449
-
,
,
'
- 54 -
Administrative data:
(Rudy de Clerck)
(Henrik Gislason)
(Jhlcup Reinert)
FAX Code for Farnes+ 18264
(Eero Aro)
FINLAND
FAX Code for Finland + 063 1513
(Arno Souplet)
FRANCE
FAX Code for France+ 21 83 47 21
(Gert Rauck)
FRG
FAX Code for FRG + 403 890 5129
CB.Vaske & E.Mahnke)
GDR
Telex Code for GDR + 31284 (ifu dd)
(Sigfus Schopka)
ICELAND
FAX Code for Iceland + 354-1-623790
(Edward Fahy)
IRELAND
FAX Code for Ireland 1 205 078
THE NETHERLANDS (Frans van Beek)
(Tore Jakobsen & OddSmedstad)
NORWAY
FAX Code for Norway 475238531
POLAND
CJ.Janusz & M.Liwoch)
Telex Code for Poland+ 54348 (Mir pl)
(Fatima Cardador)
PORTUGAL
Telex Code for Portugal + 15857 INIP P
(F.J.Pereiro)
SPAIN
FAX Code for Spain + 492351
(P-0.Larsson)
SWEDEN
FAX Code for Sweden+ 46 523 139 77
UK (England and Wales) (Tim Macer)
FAX Code 0502-513865
UK (Scotland)
(Robin Cook)
U.S.A
(Vaughn Anthony & Brian Rothschild)
U.S.S.R.
(G.I.Lukka)
Telex for USSR 126111 PINRO SU
BELGIUM
DENMARK
FAROES
210290
200390
290390
270390
070390
260390
300390
130390
260390
220290
230390
270390
150390
160390
270390
280290
arrived
230390
270290