International Council for the
Exploration of the Sea
C.M.1984/H : l
Repo rt of Activities
PELAGIC FISH COMMITTEE
by
A. Maucorps
1983
BELGIUM
(R. DE CLERCK)
No market sampling of pelagic fish has been carried out in
1983.
Research vessel surveys with bottom trawl on the
juvenile herring and sprat were continued as given in the
table below.
The research was limited to length measurements,
Research vessel catches
- -- --
-··-
- - - - --
·- - - - Area
Objectives
Season
IVc
April and
Recording densities of
Belgian
coast
Septemb er
immature herring and sprat
------
- · --- ~~-
-
-
- - - - - ·-
·-- - - - - - - -
- 2 -
DENMARK
(K. Popp Madsen)
HERRING;
No of samples
Area
Season
Typ e of
fish
Research
vessel
Market
North
Sea
1
2
3
4
Mixed
17
1
2
2
3
2
5
1
2
3
4
mixed
-
-
1
2
3
4
mixed
1
2
3
4
mixed
Skagerrak
I
Kattegat
The
Sound
"
"
"
"
"
"
"
"
"
"
"
"
Belt
Sea
Season
1
Mixed
2
"
3
4
The
Fiords
Baltic
Type of
fish
"
"
1
2
3
4
Mixed
1
mixed
2
"
"
3
4
"
"
"
"
3113
651
466
1015
Aged
Examined
racially
3113
651
466
1015
2220
500
388
. 865
-
-
2
4
417
1239
417
1239
417
1239
-
9
3
3
4
5500
1542
4724
741
5500
1542
4724
741
1442
543
1935
362
-
2
234
234
1
2
118
227
118
227
-
2
17
-
-
-
No of samples
Area
No of fish
Measured
Research
vessel
Market
-
-
3
1
2
1
-
-
-
7
1256
-
6
7
4
-
-
-
-
I
234
-
118
227
No of fish
Measured
-
-
-
412
110
286
156
-
1273
1226
772
-
Aged
Examined
.racially
412
110
286
156
412
110
286
156
-
1256
-
1273
1226
772
-
1136
-
737
606
0
-
- 3 -
HERRING.
No of samples
Area
Season
Typ e o f
fis h
4 A
1
2
Ind ustr.
3
4
4 B
4
c
North
Sea
"
"
"
Research
vessel
-
1
2
3
4
industr.
"
"
"
-
1
2
3
4
industr.
-
"
-
1
2
3
4
industr.
"
-
"
"
"
"
-
-
-
-
Market
Aged
2
85
85
5
6
23
5
23
.-
12
14
21
37
375
49
2223
2202
375
47
2091
2122
-
-
-
-
-
1
5
5
-
14
14
26
44
46 0
49
2229
2230
460
47
2096
2150
-
-
No of samples
Area
Season
Typ e of
fish
I
Skager rak
Katt e gat
.Baltic
Research
vessel
1
2
3
. 4
Industr.
1
2
3
4
Industr.
"
"
"
-
1
2
Industr.
-
I
4
"
"
"
"
"
"
-
No of fish
Measured
Market
-6
-
Examined
racially
-
No of fish
Measured
Aged
Examined
racially
10
27
31
20
579
1176
3460
1802
5 79
1176
3460
1802
12
25
6
18
2231
2767
929
4453
2231
2767
929
4057
2
271
-
-
271
-
-
-
...,
- 4 -
SPRAT.
No of samples
Area
4 A
4 B
4
c
North
Sea
Total
Season
Type of
fish
Research
vessel
1
2
3
4
industr.
-
1
2
3
4
industr.
-
-
-
-
Market
-
-
No of fish
Measured
-
-
1
l
5
17
15
38
255
83
159
3561
-
Aged
255
82
90
2547
Examined
racially
·-
-
-
-
1
1
1
2
2
103
-
-
103
-
-
5
18
16
40
255
85
161
3665
255
82
90
2650
-
-
1
2
3
4
-
l
2
3
4
-
No of samples
-
Ij
No of fish
Area
Season
Type of
fish
Research
vessel
Skagerrak
1
2
3
industr .
-
8
21
17
16
81
568
313
237
81
567
312
236
-
-
12
12
2
1910
TlO
-
14
1910
759
38
1480
38
1434
-.
-
2
454
454
1
231
231
-
4
Kattegat
Baltic
-
1
2
3
4
industr.
1
2
3
industr.
-
-
Market
-
Measured
-
Aged
-
Examined
racially ..
-
- 5 -
BLUE WHITING.
No of samples
No of fish
Area
Season
Type of
fish
Research
vessel
Market
Measured
Aged
4 A
1
2
3
4
industr.
-
26
9
12
17
584
696
68
897
141
696
68
723
-
1
2
3
4
industr.
-
-
1
2
3
4
industr.
-
1
2
3
4
industr.
4 B
4
c
North
Sea
-
-
-
-
-
-
-
Type of
fish
Research
vessel
industr.
-
-
-
26
10
12
17
No of samples
Area
Skagerrak
Season
1
2
3
• 4
-
Market
1
14
17
4
1
1
1
-
-
584
697
68
897
141
697
68
723
-
No of fish
Measured Aged
1
735
784
123
1
735
784
123
Examined
racially
-
Examined
racially
-
- 6 -
MACKEREL
No of sample s
Area
Type of
f i sh
S eason
4 A
1
2
3
Research
v es sel
l
Market
No of fish
Measured! Aged
Examined
racl.allv
ind us tr
1
2
1
3
2
1
2
4
industr
1
4 B
2
3
4
4
c
4
2
2
3
3
I
I
2
[
3
I
4
!
I Season
I
i
;~~ger-
I
i
l
I
Area
n
I
·I
I
I
Typ e o f
fish
industr.
"
1
2
3
• 4
"
"
Season
1
consum~
2
"
3
• 4
"
"
l
7
1
14
2
2
No of samples
Research
vessel
-
I
I
Market
*
U_=
_JI
I~---~
=--r- -
-
*) for human consumption.
_
No of fish
Mee.sured
Aged
-
-
-
1
1
1
-
No of samp l es
Re s earch
Market
vesse l
Type of
fish
I
= I
1
North
Area
8
I
4
-
_ I
industrl
1
1
2
-
-
-
Examined
racially
-
-
No of fish
Measured
220
-
Aged
220
-
Examined
raciallv
-
.
- 7 -
CANADA
No report received,
Finland
(R. Parmanne
& V.
Sjoblom)
No work was carried out on pelagic fish other than
that reported to the Baltic Fish Committee.
FRANCE
- 8 -
(G . BIAIS)
HARENG
I
Sud
IV
,- Mei· Gel tiqu
llI
GE!ni teurs
I
Adul tes
2
I
14
I
I ---
1167
169
i
2766
-
I
?20
276
I
I
79
I
1
[ Ou est
I
I
---1-----+-----tl----t------ir-- -
(Vll G)
I
Ecosse
II
(VI a)
.
1
I Adu 1 tes I
Imrna tu res I
I
___
_ J __ _
~-
8!
753
I
_ _ _. L _ _
Campagne de bate au de recherche
Zones
I
Dates
Sud Mer du Nord
Manche Est
~
Mer du Nord
Ouest Ecosse
I
I
r-I
Objectifs
28 .01 .83
au
02.02.83
Eval uation de l'a bondance
des larves de hareng
05 . 02.83
au
08.03.83
Evaluat~on de l'abondance
de s juveniles (IYFS)
I
I
Autres travaux
Collecte de donnees sur l'effort de peche par trai t pour les bateaux
industriels e tpar maree pour la pec he artisanale.
..
- g -
ECHANTILLONNAGE
Zones
ANC HOIS
!Golfe de Gascogne
!(VIII)
CHI NCHARD
'Go lfe de Gascogne
(VIII)
,,,,,,, I Typ• ,,
trimestre poisson
II
adul tes
geniteurs
Nombre
d'echantillons
Bateaux
de
recherche
Marc he
16
-
Nombre Nombre Examen \
de
de
des
pois sons poissons criteres l
mesures mesures ratiaux
~
I
I
2 050
-
-
-
immatures
17
-
1 853
-
-
adul tes
5
-
402
-
-
-
-
II
MER LAN BLEU
!Golfe de Gascogne
II
adultes
2
-
185
SAR DINE
!Golfe de Gascogne
II
adultes
12
-
1 846
I
adultes
immatures
28
-
3 524
-
-
I
adul tes
immatures
7
-
786
-
-
II
adul tes
5
-
513
-
-
I
adul tes
1
-
108
-
-
Ouest-Ecosse
(VJ a)
I
adultes
1
-
118
-
-
Manche-Est
(VII D 1)
II
adultes
15
1 890
-
-
III
adultes
8
762
adultes
2
302
-
-
IV
-
I
adul tes
immatures
-
3
327
-
-
III
immatures
-
1
162
-
-
SPR AT
!Centre-Mer du Nord
(IV b)
!sud-Mer du Nord
(IV C)
Golfe de Gascogne
(VIII)
+~
MAQ UEREAU
ICentre-Mer
(IV b)
du Nord
Manche-Quest
(VII E 1)
-
I
- 10 -
Mer Celtique
(VIII F-G)
Nord Gascogne
(VIII A)
Golfe de Gascogne
(VIII)
850
-
-
600
-
-
I
adul tes
-
x
300
II
adul tes
-
x
550
I
adultes
-
x
300
II
adultes
-
x
II
geni teurs
5
-
CAMPAGNES DE BATEAUX DE RECHERCHE
Zones
Dates
Objecti fs
Golfe de Gascogne
(VIII B, C, D)
Evaluation acoustique du
19/04 au 4/05/83 stock
de petits pelagiques
du Golfe de Gascogne
Sud ouest Irlande
a Nord Gascogne
(VII - VIII)
Evaluation de l'abondance
22/06 au 17/07/83 des oeufs de maquereau
-
- 11 -
German Democratic Republic
L. Danke
Sampling
Area
No. of fish
easure
ge
Season
I
Ilb
Ila
IV~
Blue whiting
July
August
August
Apr/Ma:y
I
Vb 1
I
XII
IV8w
Ila
I
i
14
12
3
I
April
May
May/Jun
a
388
3180
1352
2654
138
577
186
250
I
1
5
100
1786
100
250
I
25
7664
700
I
I
I
Research vessel surveys
Area
Spitsbergen/Bear Isl
IIb
Norwegian Sea
II a
N-North Sea
IVa
Date
I
Objectives
J1.1.-1.a.a3 ~)) Acou•tic
'""''' mid~t•r
trawling, hydrography
2.s.-20.s.s
~
)
21.s.-22.a.s~~
- 12 -
Federal Republic of Germany
(H . Dorr.heim)
Species
HERRING
Sam~
Season
Type
of
Fish
I
III
adult
adult
W of Shetland
(02)
III
adult
NW-North Sea
I
III
imm+ad
adult
II
III
IV
adult
adult
adult
I
III
imm+ad
adult
I
II
III
imm.
imm.
Area
Hebrides
(01)
(03)
NW of Ireland
(06)
South Buchan
(08)
Central North
Sea
(09)
W of Ireland
imm+ad
adult
II
No of Sam12les
Research Factory
Vessel
Ship
2
7
1
imm+ad
I
(12)
-
1095
D34
2945
100
400
200
-
341
600
400
300
200
100
300
500
150
100
100
200
'6
7
15
28
20
16
1
-
-
1195
9035
2236
4926
200
1463
2774
4368
2741
7573
161
4
-
659
5
23
10
11
13
-
5
2
-
--
(10)
S-North Sea
No of Fish
aged examined
racially
measured
100
200
100
200
Research Vessel Surve.Y!!.
Date
Area
Central North Sea 109)
S-North Sea
(12)
NW-North Sea
(03)
South Buchan
las~
Central North Sea (09
l
Objectives
05.01.-1s.01.s3
17.02.-2s.02.s3
Groundfish Survey
03.02.-04.03.83
International Young
Fieh Survey
22.03.-29.04.83
Mackerel (adults, eggs)
and Herring Survey
24.02.-31.03.93
Ground- and Pelagic Fish Survey
Hebrides
(06)
(10)
(01)
South Buchan
Central North Sea
1g~~
21.06.-29.07.03
Ground- and Pelagic
Fish Survey
Hebrides
NW-North Sea
101)
03)
21.01 . -23 . os.s3
Ground- and Pelagic
Fish Survey
01l
02
03)
16.00.-05 . 09.03
Herring, Mackerel, Sprat
and Horse Mackerel Survey
NW of Ireland
W of Ireland
Hebrides
W of Shetland
NW-North Sea
NW of Ireland
South Buchan
Central North Sea
06~
08
09
- 13 Species
SPRAT
Sam~
No of Samp les
Research Ve ssel
Season
Area
No of Fish
measured
3103
1565
II
26
17
1
Engl. Channel
VIId,e I
VIIb,c+d,e I I
2
2
404
103
Central North Sea
IVb
I
III
NW of Scotland
64
VI a
Research Vessel
Surve~s
Area
Date
Objectives
Central North Sea
IVb
04.01.-11.01.83
Groundf ish Survey
Central North Sea
I Vb
03.02.-04.03.83
International Young Fish Survey
NW of Scotland
W of Ireland
Engl. Channel
VI a
VIIb,c 22.03.-29.04.83
VIId,e
Mackerel (adults, eggs)
and Herring Survey
Ground- and Pelagic Fish Survey
Engl.Channel
VIId,e 24.02.-31.03.83
Central North Sea
IVb
21.06.-29.07.83
Ground- and Pelagic Fish Survey
Central North Sea
IVb
16.08.-05.09.83
Mackerel, Sprat and
Horse Mackerel Survey
Central North Sea
IVb
13.09.-26.09.83
Groundfish Survey
Herrin~,
Species
MACKEilEL
Sampling
Season
Area
N-North Sea
I Va
I
III
Type
of Fish
-
adult
-
Central North Sea
I
IVb III
adult
NW of Scotland
VIa
ad+imm
I
II
III
No of Samples
Research Factory
Vessel
Ship
1
10
2
No of Fish
measured aged
35
1651
300
2
5
610
60
3
15
5
710
3222
1528
200
300
197
200
413
IV
ad+imm
adult
II
adult
19
5277
300
I
VIId,e II
adult
mixed
2
1
820
78
Bristol Channel
II
VIIf
S of Ireland
I
VIIg-k II
adult
185
100
75
100
1489
12995
358
W of Ireland
7
2
VIIb,c
Engl.Channel
-
adult
3i
- 14 -
Research Vessel Surveys
Date
Area
Objectives
IVa
IVb
03.02.-04.03.83
International Young Fish
Survey
NW of Scotland
Engl.Channel
S of Ireland
VI a
VIId,e
VIIg-k
24.02.-31.03.83
Ground- and Pelagic Fish
Survey
NW of Scotland
W of Ireland
Engl.Channel
Bristol Channel
S of Ireland
VI a
VIIb,c
VIId, e
VII f
VIIg-k
22.03.-29.04.83
Mackerel (adults,eggs)
and Herring Survey
N-North Sea
Central North Sea
N-North Sea
Central North Sea
I Va
IVb
21.06.-29.07.83
Ground- and Pelagic Fish
Survey
N-North Sea
NW of Scotland
I Va
VIa
21.07.-26.08.83
Ground- and Pelagic Fish
Survey
N-North Sea
Central North Sea
NW of Scotland
IVa
IVb
VI a
16.08.-05.09.83
Herring, Mackerel, Sprat and
Horse Mackerel .Survey
Species
HORSE MACKEREL
Sampling
Season
Area
Type
of Fish
N-North Sea
I Va
III
adults
Central North Sea
IVb
III
NW of Scotland
VI a
II
III
"
"
"
VIIb, c
II
III
W of Ireland
No of Samples
Research Vessel
"
"
"
"
S of Ireland
VIIg-k
I
II
Bristol Channel
VIIf
II
"
Engl.Channel
VIId, e
I
II
"
"
7
9
2
35
7
7
6
31
1
3
7
No of Fish
measured aged
90
335
5
1637
15
657
1037
2173
14
1181
1667
142
369
13
380
142
Research Vessel Surve.l!!_
Area
Date
S of Ireland
Engl.Channel
VIIg-k
VIId,e
NW of Scotland
W of Ireland
Bristol Channel
SW of Ireland
Engl. Channel
VI a
VIIb , c
VIIf
VIlg-k
VIId , e
Objectives
24.02.-31.03.83
Ground- and Pelagic Fish
Survey
22.03.-29 . 04.83
Mac kerel (adults, eggs)
and Herring Survey
~
- 15 -
N-North Sea
Central North Sea
NW of Scotland
W of Ireland
IV a
IVb
VI a
VIIb,c
16.08.-05.09.a3
Herring, Mackerel, Sprat
and Horse Mackerel Survey
Species
BLUE WHITING
Sam.E.!J:.!!g
Season
Area
No of Samples
Research Vessel
measured
No of Fish
aged
---
Norweg.Sea
Ila
III
5
2856
422
N-North Sea
IVa
I
III
3
2
2611
1210
420
361
Iceland Grounds
Va
III
6
1524
493
Faroe Plateau
Vb
I
2542
247
10341
1014
2072
1014
III
15
20
2
1
I
2
3
NW of Scotland/
VIa,b
Rockall
I
II
1
Irish Sea
VII a
W of Ireland
VIIb,c
I
II
2
1
1503
409
503
409
S of Ireland/
VIId-k
I
12
4712
571
III
43
24
8204
464
1158
190
Engl,,Channel
East Greenland
XIV
IV
Research Vessel Surveys
Date
Area
NW of Scotland/Rockall
Objectives
VIa, b
04.01.-04.02.83
Gear research
W + S of Ireland
VIIb,c+g-k
W of Scotland/Rockall
VIa,b
02.05.-31.05.83
Groundfish Survey
N-North Sea
IVa
Faroe Plateau
Vb
W of Scotland/Rockall
VIa,b 21,07.-23.08.83
Irish Sea
VIIa
W of Ireland
VIIb,c
S of Ireland/Engl.Channel VIId-k
East Greenland
XIV
East Greenland
XIV
12.09.-20.10.83
Ground- and Pelagic
Fish Survey
Groundfish Survey
ICELAND
(Jakob Jakobsson)
Sampling
BLUE WHITING
No. of samples
Area
Season
Type of fish
Res. vessels
Fish. vessels
No . of fish
Measured
Aged
--
SE-Iceland
Jan. Mar.
Immature
2
150
S-SE-Iceland
Apr.
Immature
4
84
SE, E-Iceland
Jun.
Mixed
6
607
113
S. SE-Iceland
Aug.
Juvenile, immature
672
353
v . S. Iceland
Sept-Oct.
2399
261
150
£-Greenland, V, SW,
14
2
14
Research vessel surveys
e
E, SE Iceland
Date
20.6. -
Objective
1.7.
Blue whitings migration, abundance estimates,
31.8.
Abundance estimates, hydrography.
hydrography, zooplankton.
s, SE, E, NE Iceland
7.8. -
)-'
"'
Sampling HERRING
No. of fish
No. of samples
Area
Season
Type of fish
E, SE, 5 Iceland
Jan.-Apr.
Mixed
n .............. ,....,...,...,....1 .....
..
~~· ·~~~~~~
•'C';~~c""h...
8
Ex. ,
racially
Measured
aged
3
4192
890
890
77
9699
4616
4616
6287
547
547
C"
·~~~~~~
'<P<:,,.C"l""""'l
W, NW, N, NE, E,
SE, S, SW Iceland
w,
Sep.-Dec.
1)
Mixed
NW, N, NE, E
SE, S, SW Iceland
Sep.-Dec.
1)
Mixed
25
Fishing season
Research vessel surveys
Area
Date
SW, S, SE Iceland
11.
SW Iceland
10.
SW, S, SE Iceland
SW, S, SE, E Iceland
W, N, NE, E, SE Iceland
7.
-
Objective
21. jan.
Abundance estimates
13. febr.
Abundance estimates
- 15. Aug.
Herring larvae
14. - 29. Nov.
Abundance estimates
- 19 . Dec.
Abundance estimates
5.
~
___,
Sampling
CAPELIN
No. of fish
No. of samples
Ex.
,,,,, ............
_,,__
J\.r e a
Season
T::i::i:~e
W,N, E Iceland
Jan.-Apr.
Mixed
22
4
4736
2095
SE , S Iceland
Jan.-Apr.
Adult
10
1
2650
1083
3
of fish
'O<:::..::o
---..~u:3cc:oa1
------c
Iceland-E -Green land
Aug.
Mixed
5
Iceland-JanMayen
Oct.
Mixed
33
N, NE, E I celand
Nov.
Mixed
2
Date
Objective
•J;>;c:oh
--....·uoeocalc
------
4
Mo::ac:.11,......,,.~
· ·-------
~
607
607
4608
2387
530
530
racially
240
Research vesse l surveys
Are a
NW, N, NE, E Iceland
14.1. - 13.2 .
E, SE, S Iceland
25.1. - 10.2.
Abundance estimates
Abundance estimates
T.S. measurements
Iceland ic waters
4.8. - 31.8.
15.8. - 31.8.
0-group capelin and other spp.
!-group capelin abundance estimates
NW, N Icel a nd, Greenland Jan Mayen area
3.10. - 23. 10.
NW
4.10. - 23. 10.
Iceland
Abundance estimates
....
°'
IRELAND
(J. Molloy)
Area
Season
Div Via
North West
II, III, lV, V, VI
VI I I, IX ,X,XI
Adult
49
9564
1372
1372
Div. VII, b-c
I,II,III,V,VII,
VIII,IX , Xl,X11
Adult
20
4278
797
797
Div. Vllj
IV ,V I ,VIl,lX,X
XI ,X II
Adult
18
2307
600
600
Di v, Vllg
Celtic Sea
VII, VI II, IX,
X,XI,XII
Adult
43
5451
1098
1896
Div. VIia
Irish Sea
I,IIl,VIl,IX,X
Adult
26
5426
747
747
Di v , Vla
North West
I I I IV Iv I VI ,x,
XI ,Xll
Adult
43
6842
1588
Div. VIJ ,b-c
III,!V,V,Xll
Adult
16
4520
775
Ill, IV
Adult
5
1304
245
\~est
Type of fish
No. of samples
(market)
No. of fish
measured
No . of fish
aged
No. of fish
examined
racially
Mackerel
-
~Jest
Div. Vllj
South ~lest
Research Vessel Surveys 1983
Area
Celtic Sec
Time
OcLuber to February
Objective
Larval surve y Lu ul.Jloi11
-~HlimoLe
of abundance of herring population
VI a
October to November
Larval survey to obtain estimate
of abundance of herring population .
,...,
""
VII a
February
Young Herring Survey
VI a
November
Young Herring Survey
- 20 THE NETHERLANDS
(A . Carten)
Herring/Sampling
Quarter
of. year
Area
Type of
fish
No . of samples
No. of fish
research
vessel
measured
market
aged.
01 Hebrides
1
adult
-
2
276
100
01 Hebrides
2
2
251
50
01 Hebrides
3
1
-
12
1, 317
300
1
139
50
02 West of Shetland
3
03 N.W. North Sea
2
"
"
"
"
"
02 West of Shetland
-
examined
racially
-
-
1
11 2
25
1, 139
175
-
03 N.W. North Se a
3
"
6
7
10
2 , 09 1
400
200
06 N.W. of Ireland
1
"
-
1
147
50
06 N. W. of Ireland
3
"
14
1,447
350
-
06 N.W. of Ireland
4
11
1, 530
275
08 South Buchan
2
"
"
"
"
"
"
"
"
"
"
-
-
3
6 16
75
-
08 South Buchan
3
09 Central North Sea
1
09 Central North Sea
3
12 Southern North Sea
1
12 Southern North Sea
4
13 South of Ireland
3
13 South of Ireland
4
15 West Channel
4
Total
5
3
1 ,085
225
100
-
3
717
150
100
2
-
290
50
50
-
16
3 , 582
Boo
-
32
5 ,353
825
300
1
1
33 1
50
-
-
2
50
-
-
1
299
11 8
14
122
20,840
4,050
50
750
Herri ng/Research vessel surveys
Dates
Area
IVa , b, c North Sea
Objectives
31 Jan . -
5 March
ICES Young Fish Survey
IVb, c
Central+Northern N. Sea
4 July - 23 July
Herring echo survey
I Va
Northern North Sea
5 Sept - 24 Sept
ICES Herring l arval survey
ICES Herring larval survey
IVb
Central North Sea
13 Sept - 29 Sept
IVc
Southe r n North Sea
12 Dec
IVc
Dutch Waddensea
21 Fehr -
- 20 Dec
4 May
ICES Herring larval survey
Herring larval survey
- 21 Mackerel/Sampling
Quarter
of year
Area
Central North Sea
IVO
"
"
IVc
"
"
"
"
Southern North Sea
"
"
"
"
IV a
"
"
N. W. Ireland
"
"
VII
"
"
South of Ireland
3
4
"
2
"
3
4
1
"
1
"
-
"
-
"
"
-
"
"
-
"
aged
racial
invest.
1
51
-
2
1
4
155
84
49
50
25
100
125
-
2 ,908
-
281
346
246
5
3
3
'75
100
425
9'73
2 ,250
425
450
1,43'7
4'75
100
400
"
"
5
-
3'78
1,651
2'71
6
109
9 ,642
"
"
Bay of Biscay
2
Total
109
215
1 , 298
-
2
3
4
"
measure(
market
1'7
1'7
1'7
19
4
16
"
"
"
"
res earch
vessel
adults
3
4
1
I No . of fish
No . of samples
-
2
"
"
"
VIII
I1'ypefishof
'
-
Mackerel/research vessel surveys
Area
Dates
VIII Bay of Biscay
2 May -
Objectives
11 June
ICES mackerel egg survey
Horse macke r el/Sampling
Area
Quarter
o f year
No. of samples
No. of fish
r es earct
measureC
vessel
IVc Southern N. Sea
4
VIa N.W. Ireland
3
4
1
2
"
"
"
VII South Ireland
"
"
"
Total
"
"
"
"
"
"
3
4
-
-
market
samples
aged
racial
i nvest .
-
1
'72
5
2
2
341
108
'7
4
8
4'73
433
1, 056
200
-
29
2 ,652
'7 25
-
169
25
125
50
50
1'75
100
I
- 22 -
NORWA Y
(0. D A HL et I. ROTTIN GEN)
Herring (UJm.ti
Sampling
l-
~)
---- Type
of
fish
Season
Ska9errak
I I Ia
Northern
North Sea
!Va
South of 62°N
Research
vessel
Market
No . of
fish
measured
No. of
fish
aged
No.of
fish
e><am.
racially
I
II
III
IV
Adult
Adult
Adult
Mi><ed
II
Ill
IV
1J
4
2
J
7
400
200
185
2000
400
200
185
2000
400
200
185
1600
Adult
Adult
Adult
16
7
14
9
2
1168
1754
676
1168
1754
676
116 8
1754
400
11
2
15
1
897
19 5
1495
800
19 5
1495
800
195
100
100
100
1 00
100
100
1 00
Central
North Sea
!Vb
I
II
IV
Immat.
Adult
Mixed
Southern
North Sea
!Ve
I
Mixed
NW Nortti
Ill
Adult
1
1
Sea
Via
Research vessel survey
E.:.._
___
__=]
Season
Objectives
North Sea
Jan/Feb
rnt. Young fish survey,
herring
NW North Sea
July
North Sea herrring acoustic
survey
Skagerrak along
the Norw . coast
north to Varanger -
Oct/Nov/Oec
fish survey. 0-group
sprat/herring
December
Acoustic and trawl survey
in selected areas (sprat/
herring)
f 'jord
North Se a -S ka9errak
- 23 -
Mackere l (Scomber scombrusl
Sampling
['--
Norweg1an
Sea,
Season
Type
of
fish
No. of samples
Research
Market
vessel
No. of
fish
measured
No. of
-fish
aged
Ill
Mixed
5
498
4qs
Ill
Mixed
3
274
274
II
Ill
Mixed
Mixed
2
4
1
8
595
11 00
595
11 00
1
3
21
139
'1
139
288
199
288
199
402
402
Ila
Skagerrak
Illa
Northern
North Sea
!Va
Central
I
North Sea
!Vb
!I
Mixed
Mixed
NW North
Sea, V[a
I
IV
Mixed
Mixed
SW Ireland
VI I g-k
II
Mixed
3
2
4
Research vessel surveys
IArea
North Sea
Season
Objectives
Hay/July
Egg and larval survey.
mackerel
Tagging
F
Season
SW Ireland
VI lg-k
II
North Sea Skagerrak
!Va. b. l I Ia
Ill
Type of
tag
[ nt.
No.
tagged
Type of
fish
13 400
Mackerel
9 216
Mackerel
steel
Int.
steel
~
- 24 -
Soratl~~I
Sampling
I".
Season
Type
of
fish
No. of samples
Research
vessel
Market
No. of
fish
measured
·--- --- - -
No. of
fish
aged
Skagerrak
III
IV
Mixed
10
1 000
600
Norwegian
coast
IV
Mixed
22
2500
2100
I
IV
Adult
Mixed
6
14
!Va
Central
North Sea
!Vb
43
Research vessel surveys
Grea
4700
1500
700
1350
··--- --·--·----]
Season
Objectives
North Sea
Jan/Feb
Int.Young Fish Survey,
sprat
North Sea-Skagerrrak
December
Acoustic and trawl
survey in selected
areas (sprat/herring)
Skagerrak - along
the Norw. coast
north to Varangerfjord
Oct/Nov/Dec
Fish survey. 0-group,
sprat/herring
- ?S -
Herring (Clupea harengus) North of 62°N
Sampling
Area
I
Barents Sea
Finnmark
coast
IIa
Norw.coast
Norw. Sea
Total
Season
Type
of
fish
III 0-group
IV 0- and
I-group
I
II
III
III
IV
IV
Mixed
-"-
No. of samples
Research
vessels Market
No. of
fish
aged
6
340
30
37
2707
547
4815
1901
350
502
3082
2277
1393
308
6759
1926
20456
9359
11
18
-"0-group
Mixed
0- and
I-group
No . of
fish
measured
8
12
30
5
4
19
75
167
58
2878
No . of
fish
exam.rac.
- 26 -
Herring (Clupea harengus) north of 62°N
Research vessel surveys
Area
Objectives
Date
Norwegian coast
62°N - 70°N
January - March
Experimental fishing,
acoustic survey of spawning
stock
Norwegian coast
62°N - 70°N
April - May
Distribution herring larvae
Norwegian coast
62°N - 69°N
April - May
Ta<jging
Norwegian coast
62°N - 70°N
April May
Distribution of adult herring
on coastal banks
Barents Sea/
Norwegian Sea
June
Post-larvae distribution
Barents Sea/
Norwegian Sea
August
0-group distribution
No wegian coast
62 0N - 69°N
Sampling commercial fishery,
October - November experimental fishing
No wegian coast
0
62 N - 71°N
November-December
0-group survey
Tagging
Area
Norw.coast
Season
Type of tags
No, tagg.
II
internal
33816
Type of fish
adult
Recoveries
- 27 -
Capel in (Mallotus villosus}
Sampling
Area
Season
Type
of
fish
_.. _
I
Barents
Sea
I
II
III
IV
Mixed
Ila
Norwegian
Sea
I
II
III
IV
-"-"-
IIb
I
Northern
II
Norwegian Sea,III
Svalbard area IV
Va
Northern
Iceland
XIV
Jan Mayen,
Greenland
Total
IV
III
IV
-"-"-
_11_
-"_n_
_11_
_11_
_11_
_.. _
-"-"-
No. of samples
Research
vessels Market
No. of
fish
measured
No. of
fish
aged
66
3
98
8
823
1
16
1
87964
401
10114
352
3365
235
3779
24
3
3
4
1721
109
179168
11325
216
106
4038
392
116
500
379
91446
41510
259
224
4297
756
18
1427
1102
8
19
728
1399
724
1226
427035
20513
5
4
68
1
332
821
401
3893
No. of
fish
exam.rac.
- 28 -
Capelin (Mallotus villosus)
Research vessel surveys
Area
Date
Barents Sea
January
Distribution, spawning,
migration
Barents Sea,
Finnmark coast
March
Spawning capelin
Barents Sea
May - June
Investigations on feeding
grounds of capelin
Barents Sea
Finnmark coast
June
Distribution of larvae
Barents Sea
June
Distribution and behaviour
feeding capelin
Barents Sea
August - September 0-group survey
Barents Sea
September - October Distribution and abundance
Jan Mayen - Iceland
October
Tagging
None
Objectives
Distribution and abundance
- 29 -
Blue wh iting
(Mico__r_oll\~_s_i_'3 ti_us
J:?.OUtassou)
Sampling
Area
I
Barents Sea
Season
Type
of
fish
No. of samples
Research
vesse ls Market
No. of
fish
measured
No. of
fish
aged
474
107
57
9
1793
2351
4005
100
1224
2415
198
27
148
3
2
13
4
166
39
32
397
11857
3807
1711
197
437
829
108
43
142
3527
11308
690
1605
III
IV
Mixed
_.,_
7
4
4
I
II
III
-"-"-
8
42
86
17
IIb
Northern
Norwegian
Sea
II
III
_n_
IIIa, IVa,b
North Sea
I
II
III
IV
-"-
VIa, VIb,
I
II
VIIb,c
West of the
British Isles
-"-"-
8
21
Vb
Faroe
Islands
II
III
-"-"-
1
1
100
100
50
50
XIV
East
Greenland
III
IV
-"-
1
1
3
85
3
85
41850
7998
Ila
Norwegian
Sea
Total
-"-"-
-"_n_
2
7
_11_
_11_
204
459
No. of
fish
exam.rac.
- 30 -
Blue whiting (Micromesistius poutassou)
Research vessel surveys
Area
West of British Isles
Date
April
Objectives
Distribution and abundance of
spawning stock.
Norwegian Sea
Augustx)
Distribution, abundance and
structure of total stock.
x)
International survey, 3 norwegian vessels of 8 total froM 5 countries.
Tagging
None
- 31 -
Great silver smelt (Argentina silus)
Samplin.9:
Area
I, Ila
Norwegian
coast
Season
I
II
III
IV
Type
of
fish
Adult
-"-
_.. _
_11_
Ila
Norwegian Sea II
_n_
Illa, I Va
North Sea
-"-"-
I
II
III
IV
Vb
Faroe Islands III
Vla, VIIb,c
West of the
II
British Isles
No. of samples
Research
vessels Market
-"-
10
5
2
3
12
5
21
8
1
16
1
_11_
No. of
fish
measured
No. of
fish
aged
204
1791
146
9
204
1168
335
335
33
2761
511
22
33
1092
239
20
96
1
-"-
1
52
-"-
4
189
125
6053
3313
Total
56
33
No. of
fish
exam.rac.
Research vessel surveys
Area
Norwegian coast
Date
April
Objectives
Distribution and structure
of adult stock.
- 32 -
Polar cod (Boreogadus saida)
Sampling
Type
of
fish
No. of samples
Research
vessels Market
No. of
fish
measured
Area
Season
I
Barents
Sea
I
III
III
Mixed
0-group
Mixed
18
3
5
1545
5
429
IIb
Svalbard
area
III
0-group
36
1141
62
3120
Total
No. of
fish
aged
75
75
POLAND
(J. Elwertowski)
No work carried out which would be relevant to the Cominittee.
No. of
fish
exam.rac.
PORTUGAL
(I. BARRACA)
Echantillonnage:
Espece - Sardina pilchardus
Region
Saison
Type de
poissons
IXa
er
IXa
1
trimestre
2eme trimestre
IXa
3eme trimestre
IXa
4eme trimestre
echantillons
N.
Marc he
129
To us
TOTAUX
164
Navire de
recherches
-
-
N.poissons mesures
Marche
9792
12360
Navire de
N. de poissons
dont age determine
recherches
Otolithes
-
395
285
114
.Ecailles
272
203
8
15504
2330
845
170
179
22
12968
1610
353
248
675
30
50624
3940
1878
804
w
w
Espece - Trachurus trachurus
Region
Saison
Type de
poissons
IXa
IXa
er
1
trj.mestre
2"me trimestre
IXa
3eme trimestre
IXa
4eme trimestre
TOTAUX
To us
N.
echantillons
Marche
Navire de
recherches
N.poissons mesures
Marc he
293
48
25503
389
340
42
21
22974
20921
317
76
16810
1339
187
86208
Navire de
recherches
N. poissons
dont age determine
88
3357
10210
176
3102
126
5500
276
22169
666
Espece - Scomber scombrus
Region
Saison
Type de
pois sons
IXa
er
1
trimestre
2eme trimestre
IXa
3eme trimestre
IXa
i•me trimes tre
IXa
N. echantillons
Marche
TOTAUX
-
N.poissons mesur0s
Marche
Navire de
recherches
N. de poissons
dont age determine
-
-
15099
17681
197
-
15392
11917
-
389
302
1003
-
60089
-
1694
257
315
Tous
Navire de
recherches
234
-
514
-
489
w
_,,..
Espece - Scomber .japonicus
Region
Saison
Type de
pois sons
IXa
er
1
trimestre
2eme trimestre
IXa
3eme trimestre
rxa
4eme trimestre
IXa
TOTAUX
N. echantillons
Marche
N. poissons mesur6s
Marche
Navire de
recherches
N. de poissons
dont
age
determine
-
757
1472
-
150
6
-
-
243
-
142
62
64
-
2829
-
390
14
18
To us
Navire de
recherches
26
-
357
36
Esp0ce - Micromesistius poutassou
Region
Saison
Type de
pois sons
IXa
er
IXa
1
trimestre
2''me trimestre
IXa
3eme trimestre
IXa
4eme trimestre
TOTAUX
*
Tous
N. echantillons
Marche
Navire de
recherches
N.poissons mesur0s
March0
73
102
36
95
52
37
4592
6093
6108
79
3288
186
20081
322
34
Navire de
recherches
N. poissons dont
age determine
6194
352
5072
494
2240
599
115
4061
""
767776
1560
Les chiffres enregistres dans le tableau concernent les pairs d'otolithes qui ant ete retires mais
pas encore observes.
w
'-"
SPAIN
(R. ROBLES)
SAMPLil'l'.i DATA FOR • ~: ~~ ••••••
AREA
SEASON
1
VI Ile
:SPECIES
Research Vessel Sanples
of fish
N• of sanples N•Measured
38
2322
Micrcmesistius poutassou
.............................
..
Marl<:et Sanples
N• of fish
N• of sanples
Measured
36
3871
41
3743
51
5883
4
39
4320
1
9
1179
2
3
41
7790
w
IXa
2
3
4
28
4616
11
1527
8
1138
9
1394
°'
SAMPLil'C DATA FOR
AREA
VII
VIIIa,b
Season
1.983
SPEX:IES
sent>er scart>rus
Research Vessel &moles
N2 of fish
Racial
N• of samples
Aged
Measured
investig.
N• of safl)les
Ma!i<et Samples
N2 of fish
Racial
J\ged
Measured
investig.
1
2
276
2
2
287
3
-
-
4
-
-
1
2
95
2
6
286
=
1
VII le
38
346
2
3
46
4
OTilER ACTIVITIES
Maturity studies were also made
887
71
5158
350
74
5238
457
4
292
1
80
~)
__,
SAMPLING DATA FOR
_SPEX;IES •••• ~ .I;~1;~. ~Walbaun)
........... ... .........
1. 983
Research Vessel SafI>les
AREA
VI Ile
IXa
Season
N• • of
sanples
N• ot' fish
Measured
Market SafI>les
Aged
Racial
imrestig.
N• of
sa:rples
N• of fish
Measured
Aged
1
42
2009
154
2
47
2609
191
3
55
3329
280
4
70
3186
290
1
54
4921
261
2
61
6027
353
61
6032
587
52
5314
205
3
24
1990
4
Racial
imrestig.
w
"'
CJ1'HER ACTIVITIES
Surveys
Area
VIIIc, IXa
Date
August
Bianass determination
by acoustic method.
SAMPLING DATA FOR
1. 983
Trachurus trachurus
'S PECIES
Research Vessel Scrrt>les
AREA
Season
N• of 5al\'.)les
N• of fish
Measured
Market Scrrt>les
Racial
Aged
investig.
of fish
N• of sal{lles N•Measured
Racial
Aged investig.
1
VII
2
3
4
·=
-
VI Ile
2293
14
966
18
1832
3
11
1591
4
10
1088
1
2
38
-
-
=
w
"'
- 40 -
SWEDEN
1983
SAMPLING
(R. ROSENBERG)
herring
Season
Ar ea
Type of
fish
No. of Samples
Research
Vessel
I, II, III
Kattegat
Market
I No. of Fish
I Measured Aged
I
No. of Fish
examined
racially
2 615
16
5
1 0 328
2 615
IV, V, VI
-
78
21 582
624
624
VII , VIII,
IX
2
48
15 057
899
899
X, XI
-
37
9 660
261
26 1
I, II, III
9
10
6 608
1 795
IV, V, VI
-
17
5 326
1 158
1 795
1 158
VII, VIII,
IX
18
12
I
9 554
2 331
2 331
X, XI, XII
-
9
I
2 770
511
551
VI
-
3
1 137
224
224
45
219
82 022
10 418
10 418
I
I
Skager r akj
I
~<d'''"
I
TOTAL
I
I
II
I
l
RESEARCH VESSEL SURVEYS
r
Season
Area
I
Objectives
!
Kattegatt, Skagerrak
I II
Investigation on young fish;
herring larvae and stock separation
VIII-IX
Echo integ rati ons
I
- 41 -
UNITED KillGDOM
ENGLAND AND WALES
(A. C. Burd)
SAMPLING 1983
HERRING
Area
North Sea
'1A
4B
4c
West of Scotland
6A
Eastern English Channel 7D
Western English Channel 7E
No. of samples
No . of fish
Research
veasel
Measured
Otololi thed Racial
investigation
522
2303
5851
26
2421
116
260
1088
1303
26
721
85
145
819
1303
26
517
85
Otolithed
Racial
investigation
2
14
3
1
4
Market
---
11
3
1
SPRAT
Area
North Sea
4B
4C
Western English Channel 7E
No . of samples
No. of fish
Research
vessel
Market
Measured
36
17
2
5
17
4567
1901
1680
--748
897
691
MACKEREL
Area
No. of samples
No, of fish
Research
vessel
Measured
Otolithed
95
59
450
11217
1311
1041
95
59
189
1071
812
550
Racial
investigation
---
North Sea
West of Scotland
Irish Sea
South West
Celtic Sea
Biscay
Market
4B
1
6A
1
7A
1
7FA-F
1
7J,G,H
8
3
4
8
150
150
- 42 -
SAMPLING 1983
PIICHARD
Area
No. of samples
No. of fish
Researeb
vessel
Market
Measuxed
1
1
2
3
1637
21
433
No. of samples
No. of fish
Research
vessel
Measuxed
Otolithed
239
170
1489
11266
225
114
372
1139
4076
1154
South West
Celtic Sea
Biscay
7E+F
7J
8
Otolithed
---
Racial
inveatiga ti on
328
21
228
SCAD (HORSE MACKEREL)
Area
Market
Racial
investigation
--North Sea
West of Scotland
Irish Sea
South West
Celtic Sea-Irish
coast
Biscey
4
6
7A
7E-H
2
1
2
5
12
71'£J
8
5
RESEARCH VESSEL SURVEYS, 1983
Area
Month
Objectives
North Sea and English Channel
North Sea and English Channel
North Sea
Continental Slope
Continental Slope
Continental Edge
North Sea
North Sea
North Sea and Wester~
North Sea
Western Channel
Janua:cy
Herring larval survey
Sprat acous tic survey
International Young Fish Survey
Mackerel egg Survey
Mackerel egg Survey
1 0 1 group Mackerel Survey
Herring acoustic Survey
Herring larva l Survey
1 0 1 group Mackerel Survey
Herring acoustic Survey
Sprat and Mackerel acoustic Survey
"
February
March
May
Ju~
August
October
November
December
- 43 -
UNITED KINGDOM
SCOTLAND
(R . S . Bailey)
HERRING SAMPLING
AREA
ISEASON
I NO
I
I VESSEL
OF SAMPLES
RESEARCH MARKET
IVa Northern North [Jan- Mar 117
Sea
1
~
5
!Apr- Jun 3
,
I
•Jul
- Se •n
I
15
33
1
10
'.oct - Dec 6
.
3
. 11
I
NEN Sea (04)
~ran - Mar
.Apr- Jun
Sep
Oct - Dec
1Jul -
IVb Central North
Sea
SouthBuchan
I
3
1
5
1
727
55
1756
3730
12
8769
378
1739
1 7475
l 259
! 586
181
29
87
344 I
0
i
1663 1240
0
181
576 l
107 i
I
33
I
0
0
0
0
1248
28
0
0
0
. 2
i 48
i 40
1 EXAMINED
' RACIALLY
i
I
Jan- Mar
1
9
0
11
2
Jan- Mar
I
Jul - Sep
Oct - Dec
Jan- Mar
Jul - Sep
Oct - Dec
7
'3
14
0
0
1
0
0
0
0
0
II 446
, Adult
II Adult
l
I
I Adult
130
1476
174
1343
328
2104
I
41
107
122
287
0
74
94
49
2
111
160
445
0
34
248
131
Adult
Mixed
Juvenile
Adult
Mi xed
Juvenile
1 Adult
l Juvenile
287
170
346
IAdult
Adult
I Adult
I 194o
3
4
16
15
2
1
6
10
0
0
0
1
0
0
0
28
1472
4531
1891
11
252
i 394
I 898
7
0
5
0
7
6
1685
1317
!. 1816
0
I
Adult
Mixed
Juvenile
Adult
Juv enil e
Adult
Mixed
Juvenil e
Adult
Mi xed
Juvenile
IAdult
Juvenil e
I
Oct - Dec
Hebrides (01)
0
0
0
37
0
38
0
0
2'7
0
0
I
TYPE OF
FISH
!
AGED
'
Apr- Jun
Jul - Sep
Cen tral North
Sea
I NO OF FISH
I MEASURED
; Juvenile
; Adult
! Adult
Juvenile
l Adult
1 M
ixed
Juvenil e
I
i
;
I
I
I
I
I
i
I
- 44 -
NO OF SAMPLES
RESEARCH MARKET
VESSEL
NO OF FISH
MEA SURED AGED
Oct-Dec
6
1
1
2
2
3
3
2
0
0
0
15
0
4
655
30
1
1
1829
463
1262
332
0
0
0
553
175
418
N West Ireland
(06)
Jan- tl"iar
7
0
519
248
Adult
Minch (07)
Clyde
Jan- Mar
5
8
2
0
0
0
10
2
17
22
1
0
19
88
6
29
2
0
3491
2379
68
: 2409
I 11726
11621
I 4976
809
1163
1311
613
0
460
1947
101
1636
146
312
Adult
Mixed
AREA
SEASON
Jan - Mar
N Rona and
Shetland (02)
Apr- Jun
Jul-Sep
Apr- Jun
Jul - Sep
Oct-Dec
i
I
EXAMINED
RACIALLY
'rrPE OF
FISH
Adult
Juvenile
Adult
Juvenile
100
Adult
Mixed
Adult
Juvenile
54
Adult
Adult
Mixed
Adult
Mixed
Juvenile
TAGGING
AREA
SEASON
TAG TYPE
North WesteYn
North Sea
June
~ag ne tic
Microtag
NO TAGGED
TYPE OF
FISH
RECOVERIES
48000
Adult
-
HERRING
RESEARCH VESSEL SURVEYS
OBJECTI VES
AREA
SEASON
North- western North Sea to German
Bight
North and West of Scot l and
Firth of Cl yde (Ballantrae Bank)
February
Internationa l Young Fish
Feb- Mar
March
Su rvey
Recrui t Trawling Survey
larval Survey Acousti c and
North West ern Nort h Sea, North and
North West Scotland
West of Scotland and North West
Ireland
Moray Firth to Firth of For th
July
AcouSt ic and Trawling
September
Su rveyZ
1
Larval Survey
September
September
October
Larval Survey 1
1
Larval Survey
1
Larval Survey
November
November
Recruit Tr~wling Survey
Acoustic Trawling Survey
Trawling S>J r vey
Northern Nort:i Sea
West of Scotland and North West
Ireland
Firth of Clyde
North and West of Scotland
Notes:
1.
2.
In accordance With pre vious ICES resolutions .
In accordance with C. Res. ·1980/2 : 24.
Additional Resea rc h Activities
1)
Continued evaluation of coded
microwire tags in accordance with C. Res .
1980/2:25.
2)
Continuation of herring p3rasitological work with a view to using parasitological
data for studying models of migration .
- 45 -
MACKEREL SAMPLING 1983
AREA
SEASON
IVa Northe rn
Sea
OF SAMPLES
MARKET
1
Ajir- Jun 16
Jul- Sep 46
Oct - Dec 19
2
IVb Central North
Sea
I VIa
! NO
I RESEARCH
VESSEL
North Jan- Mar is
Jan- Mar
Apr- Jun
Jul - Sep
Oct - Dec
9
I NO OF FISH
MEASURED
AGED
320
11
1540
419
284
EXAMINED
FACIALLY
I
i 191
88
I
I
774
100
25
7
I:nm/Adult
Adult
L-nm/Adult
Adult
213
155
I
TYPE OF
FISH
Tum
Imm/Adult
Imm/Adult
Jan- Ma.r
17
6
1616
782
I mm/Adult
Apr- Jun
Jul - Sep
Oct - Dec
21
54
107
4840
12964
920
1842
linm/Adult
Imm/Adult
VIIb West Ireland
Apr- Jun
1
174
So
Imm/Adult
VII J+H
South Ireland
Apr- Jun
11
279
Imm/Adult
VIII Biscay
Apr- Jun
99
Adult
West of
Scotland
\ 379
I
i
i 141
1
RESEARCH VESSEL SURVEYS
AREA
SEASON
OBJECTIVES
West of Ireland to Bay of Biscay
West of Ireland to Bay of Biscay
Nor t h <lest of Scotland
Apr /May
June
Egg Surv ey
Egg Survey
Acoustic Survey
November
- 46 -
SPRAT SAMPLING 1983
AREA
SEASON
I Va
Jan- Mar 7
Apr-Jun
Jul-Sep
Oct - Dec 12
IVb
VIa
NO OF SAMPLES
RESEARCH COMMERCIAL
NO Of FISH
MEASURED AGED
1321
78
2310
117
4858
301
199
4326
0
50'
Jan- Mar 25
Apr- Jun
Jul-Sep 10
Oct - Dec 33
4
Jan- Mar 16
Apr-Jun
Jul - Sep
Oct-Dec
6
2156
459
25
10885
732
l
RESEARCH VESSEL SURVEYS
AREA
DATE
Western North Sea
January
Western North Sea
November
OBJECTIVE
Sprat a coustic and trawling
survey (in accordance with
C. Res. 1981/2:22)
Trawling survey for 0-group
SQUALUS ACANTHIAS
SPURDOG SAMPLING
AREA
I Va
SEASON
NO OF SAMPLES
RESEARCH MARKET
NO OF FISH
VESSEL
VESSEL
Jan- Mar
Apr- Jun
Jul- Sep
Oct - Dec
15
-
IVb
Jan- Mar
Jul- Sep
5
6
VIa
Jan- Mar
Apr- Jun
Jul - Sep
Oct-Dec
VIIa
Apr-Jun
6
1
1
-
RESEARCH
10
35
MARKET
216
107
-
4
-
-
-
76
8
-
-
562
-
2
3
5
10
-
203
374
496
1340
-
1
-
106
21
218
Tagging
No releases of spurdog were made in 1983.
Re turns from experi ments carried out
in 1977- 1982 continued with the bulk of returns coming from VIa, the main release
a 1·ea.
- 47 -
USA
(R. C. Hennemuth)
SPECIES AND SPECIES GROUPINGS
ATLANTIC HERRING
The National Marine Fisheries Service's Northeast Fisheries Center (NEFC)
prepared an assessment update for Atlantic herring stocks in the Gulf of Maine
and for the Cape Hatteras-Nova Scotia region.
An evaluation of abundance
indices based on research vessel surveys (NEFC and Massachusetts Division of
Marine Fisheries), estuarine sampling, and larval herring surveys (Maine
Department of Marine Resources) was made and incorporated into the assessment.
A winter survey was completed by NEFC vessels R/V ALBATROSS IV and
R/V DELAWARE II during February to study relative year-class strength and
distribution patterns .
One-year-a 1d herring were tagged, and an attempt was made
herring.
to
tag spawning
Maine Department of Marine Resources and NEFC scientists also
continued cooperative studies to evaluate incidence of herring parasites and
their use as natural tags.
The University of Massachusetts, in cooperation
with NEFC, is undertaking stock-identification studies using biochemical
methods and morphometric studies.
- 48 -
ATLANTIC MACKEREL
The NEFC provided an assessment of the status of the Northwest Atlantic
mackerel stock (North Carolina to Newfoundland) for use in amending the
fishery management plan for 1984-85.
The NEFC, the Polish Sea Fisheries Institute (Gdynia), and the GRYF Deep
Sea Fishing Company (Szczecin) cooperated in conducting a research fishery for
mackerel during February-May 1983 between Georges Bank and Cape Hatteras,
North Carolina.
Two Polish factory stern trawlers and the R/V WIECZNO were
used in this program.
The NEFC prepared a report on Atlantic mackerel mutation (micronuclear)
frequencies in fish sampled in 1982 from Long Island Sound and from several
areas in offshore waters.
Pathobiological samples collected in 1982 and 1983
from the Polish vessels and from several inshore areas have been analyzed to
determine the rate of incidence of hemoparasites and possible vectors . Some
mackerel were held in the laboratory for several months to determine the
effects of stress on infected fish.
BUTTERFISH
The NEFC prepared an assessment of the status of butterfish for use in
amending the fishery management plan for 1984-85.
SPINY DOGFISH
Work is in progress at the NEFC to prepare a first analytical assessment
of the status of spiny dogfish off the northeastern coast of the USA.
- 49 -
ALEWIVES, BLUEBACK HERRING, AND SHADS
The Atlantic States Marine Fisheries Commi ssion completed a profile of
biological, fisheries, ar.d management information pertaining to East Coast
stocks of these species.
The Maine Department of Natural Resources initiated a new study of
alewife reproduction in several Maine lakes .
The Virginia Institute of Marine Science completed a feasibility study
for expansion of spawning habitat for anadromous fishes (including alewife,
river herring, shads, and striped bass) by constructing fish passage facilities
on low-head dams.
The Connecticut Department of Environmental Protection completed studies
on feeding dynamics and mortality of larval American shad in the Connecticut
River.
They are also examining the relationship between catch per unit effort
and stock abundance, and between spawning escapement and subsequent year-class
strength.
BLUEFISH
The NEFC prepared an assessment of bluefish stocks, conducted experiments
on feeding behavior of bluefish, and began a voluntary bluefish data collection
system with the cooperation of angling clubs in the New York metropolitan area.
The State University of New York at Stony Brook continued examination of
the offshore distribution of bluefish, based on NEFC survey data.
STRIPED BASS
The National Marine Fisheries Service and the US Fish and Wildlife Service
continued monitoring the age, sex, and stock composition of the co11111ercial
fisheries by gear and location, assessment of annual production of juveniles in
- 50 -
the major spawning rivers, and sampling spawning populations to obtain age,
sex, and fecundity data.
Experimental studies determine the effects of
contaminants and contaminant mixtures on early life-stage survival, effects
of sewage-treatment practices on nutrient availability to striped bass larvae,
feeding ecology of striped bass larvae, and predation on striped bass larvae
by other fish species.
BLUEFIN TUNA
The Southeast Fisheries Center (SEFC) updated its assessment of the
status of Atlantic bluefin stocks by developing adjusted catch-per-unit-ofeffort (CPUE) indices of stock abundance for recruits and adults based on
coastal rod and reel fisheries and high-seas longline fisheries data.
A
sample survey was carried out to estimate the magnitude of juvenile fish
caught by the rod and reel sport fishery and as a bycatch of the purse seine
skipjack fishery, and to establish CPUE for rod and reel fisheries . An
ichthyoplankton survey was carried out in the Gulf of Mexico spawning grounds,
thus continuing the time-series of those data.
BLUE MARLIN, WHITE MARLIN, SAILFISH, AND SWORDFISH
Stock assessment emphasis by SEFC was placed on sailfish assessment in
the Western Atlantic Ocean.
The appropriateness of various growth models was
investigated, mortality rates were estimated, and a yield-per-recruit analysis
was conducted.
In cooperation with the State of New Jersey, the SEFC carried out a
census survey to estimate the number of Atlantic blue marlin and white marlin
caught by US recreational fishermen during 1983.
The survey was conducted
along the US eastern seaboard, in the Gulf of Mexico, and in Puerto Rico and
the Virgin Islands .
- 51 -
KING MACKEREL
Mark-recapture data were analyzed to examine the movement of individuals
between the Gulf of Mexico and the Atlantic Ocean.
Total and fishing mortality
rates were also estimated by area and year from those tagging data.
Temporal
changes in size-frequency samples were investigated as an index of changes in
exploitation levels.
Yield-per-recruit simulations were used to discern possible
methods of maximizing yield, and the current status of exploitation levels
compared to the maxima.
Catch and effort data were used to estimate maximum
sustainable yield.
SHARKS
The NEFC has implemented a data processing system to analyze tag-return
and l ength/we ight records from over 100,000 Atlantic sharks, tunas, and swordfish, and to summarize longline catch records for sharks and swordfish tak en
by research and commercial vessels over the last 20 years.
Ongoing research
emphasizes the population structure, migratory behavior, age and growth,
food habits, and reproductive habits of several species of large sharks.
- 52 -
GENERAL BIOLOGY AND ECOLOGY
AGE DETERMINATION
Dorsal spines and otoliths (sagittae) from blue marlin and white marlin
were collected from catches in the Western Atlantic Ocean, Caribbean Sea, and
Gulf of Mexico, to see if these structures could be used as a source of ageand-growth information (see 1983 Int. Corrm. Conserv. Atl . Tunas Working Doc.
SCRS/83/65).
Methodologies were developed for sectioning dorsal spines,
polishing otoliths, and taking measurements of these two skeletal structures.
Five different approaches were employed to determine the accuracy of age
estimates:
(1) scanning electron microscope techniques to examine otoliths
from juvenile marlin to count daily growth bands; (2) collecting skeletal
structures from tag-return marlin where age can be closely approximated from
tagging records; (3) determining the month(s) of band formation from collections
taken throughout the year; (4) determining the degree of agreement between
counts of bands in two different skeletal structures from the same fish ; and
(5) applying radiochemical techniques for dating skeletal structures.
ECOSYSTEM STUDIES
The NEFC refined and augmented the energy budget for Georges Bank to
include production estimates for pre-recruit fishes and production-biomassconsumption estimates for top predators in the ecosystem (large pelagic sharks
and fishes, marine marrmals and birds) .
The NEFC conducted stomach sampling of major fish predators on the New
England shelf, including a special series with focus on incidence of fish larvae
in mackerel guts.
- 53 -
USSR
(A.S. SELIVERSTOV)
In 1S83 researches on the biology of Atlanto-Scandian herring
and blue whiting in the llorweg ian Sea,of blue whiting to the
north of Ireland,mackerel i n t he Bay of Bis cay ,of capelin and
polar cod in the Barents Sea were continued.
The state of stocks,distribution peculiarities,size and age
compositions of fis h were investigated during the cruises of the
RVs "Perseus-III","Alaid","menzelinsk", "Kapitan Demidov","llikolai
Kononov" and scouting vessels.
In March- May the acoustic survey was performed by t'le rt.V
"Perseus-III" to assess blue whiting at the spawning grounds.
In August the same rese arch vessel participated in the international survey aimed at assessing the blue wh iting stocks in the
,Jorwegian Sea under the programme of ICES Pelagic Fish Committee.
As in previous years the oceanographic sur vey of the Norwegian
and south Greenland Seas was performed jointly with the Icelandic
experts.
The 0-group commercial fishe01 were surveyed in the Barents
Sea and adjacent waters together with the Norwegian scientists
in August-September. The acoustic capelin survey was undertaken
in September.
The results of the researches have become the base for the
ICES Working Groups to recommend the total allowable catches of
pelagic fishes for future time.
- 54 -
DATA
on pelagic fishes collected in 1983
- - - : - - - : - - - - - :-NUmbe:i:: of- :- - - - - - - - - - - - - ICJ!B : Season:
Type
; samples col.:Number of' :Number:Numberi.
•
•
of
lec~ed ·fish mea- • of : of fisf-L
area
: month •
.
:
;
: sured
:
fish
tleseSXilh
:
~ ______ • _____ !esse]lfarket:
1
.
2
- - - :.. - - _:_ -
-
3-
-
:
-
• fish . fc;>r ra':"
; aged : cial . :
•
~ysi~
- - - - - - - - - - -·-
4- '-
-
5 - -:
-
-
5
-
-
•
7 -- !.:-• --
-·- -
Polar cod
1
I Immature
II Immature
ill Adult
TI
lYAdult
YAdult
ill
YIIAdult
YlllAdult
IX Adult
1
1
2
4
1
I
I
IY
XAdult
Xl Prespawning
3
I
4
8
7
1
8
Total
I
I Spawning
YIIAdult
JJ YillAdult
l1b
I1
Total
Y. Prespawning
XII Spi:9'1Jiing
21
--
4558
1603
521:
II372
2449
470
2919
8963
2470
4238
15671
5090
78~6
12916
428?8
263
52
1033
1720
454
2123
2577
4560
100
100
200
400
100
100
300
100
330
730
34!il
IOO
440
1670
•
8- - - _:_ -
- 55 -
(continued)
- - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - _2__ : _ - _J - -- _:_ - 4 - _:_ _5 _ .:_ - - ~ - _: - _7 - .:_ - ~ - - - Capelin
l
Prespawning
Prespawning
.:: Spawning
l'.
9
9
J
21
lY s~~ing
Y A ul
.l~ Adult
f1
if1 Adult
Jill Adult
IX Adult
"'
~
J
4
4
5
Adult
kl Adult
Total
10%:~
23
399139
II50
34 ;:9
25662
30241
l 24890
8054
1602
19?29
411 II5
241'5
2II
2626
46741
75;!
164
9.L6
639
285
S'24
1330
2270 2
275I3
51545
2127 5
I0?39
7327
39341
%725
2
2
""2
~v
l Prespawning
Jl Prespavming
ill Spawning
na
s
4
12
IY
Spawning
Y Adult
n
T ~
Total
fl
;.C.
i Prespawning
n Prespawning
I
IY
YI
Spawning
Adult
flb
ill
Yf1 Adult
YW Adult
IX Adult
IY
A.
Adult
Adult
;\[1 Adult
Total
95JI
19169
2765
1614
10:?2
54 91
55 09
2315'5
1
r ·~
~ .,
X Adult
:c
~ .!
2J6Ie
i 0020
l
3
20
24
6
I
7
31
900
833
JOO
2033
100
300
400
400
600
7t+Q
[ 740
200
LOO
l!)TJ
200
60C
400
1200
1 ~· 00
100
300
050
1750
600
lOO
700
2450
- 56 -
(continued)
I : 2
:
J
: 4 : 5 :
: 7
: S
---------------- --- 6- ------ ---Blue whiting
TI
na
l.YYoung
YAdult
YI Adult
~o
9
19
Yl1Adult
YlliAdult
IXAdult
J
4
I
8
IY
XI Adult
!hi
YllJAdult
IXAdult
Total
J
IY
x
i
Yb1
IYa
Total
TI Pre spawning
I
ill Young
Total
IYPostspawning
TI
YPostspawning
YIPostspawning
Total
!ii ¥lllYoung
l XYoung
Total
IY XIAdult
Total
YPostspawning
n YI Young
Total
l
I
2
4
5
J
g
2
4
5
I
I
iY Postspawning
YPostspawning
Total
i1
58322
8702
2IJJ
4108
11: 94 J
1000
900
1900
JOO
L:OO
I 'JO
800
1667
1995
J 662
Ii74
48J6
.:.4544
5840
20J84
5157
I9IJ
582
7652
100
200
JOO
100
400
430
JOO
7JO
200
1: 00
600
282
67J
100
955
100
701
14
29692
14JO
J
2924
JOO
I
l
IYa
19750
4615
J
TI Spawning
Ill Spawning
196
J8376
l
J
4
J 32
J ?56
774
75J
;,.527
105:::
2070
3·121
JOG
100
100
100
JOO
400
- 57 -
(continued)
1
YJ:b
YIIb
c
,_
- - - - - - - J - - -:
II Spawning
I III Spawning
IY Spawning
-
4 - -: - 5 ·-
lJ
7
1498
15327
2367
19192
2110?
2402
5 00
1 C'O
400
52I
521
24
3262
25040
3202
31504
400
400
641
1441
3
3
980
975
150
2486
4591
300
300
I
7
I
Total
fl
lJ Postspawning
Total
')
IISpawning
II I Spawning
III
IYPostspawning
Total
8
6
6
II
YII
II
IYYoung
VYoung
VIYoung
IVPostspawning
'I'otal
YIII
II IVIrnmature
'l'otal
8
8
150
150
!00
:
8 :
------
- 58 -
(continued)
- - I - -: - 2- - : f1
;J
f1a
- - 3- - - : - -4 - : - 5
Mackerel
JI Prespawn.
and spawn.
3
Jf1 Prespavm.
and spawn.
5
Yill Postspawn.
3
l .\ Postspawn.
11
Total
il
Y Prespavm.
postspawn.
Yi Pre spawn.,
poatspawn.
y:
!!1
b
7
1459
10G
7703
3281
400
200
r~T
.1..).:_
12568
708
II84
2453
Yb
IJa
Yl a
-- -----
3637
if1
ill
Total
n YI
YI
f1
r1
:'I
i•
rf
IY
Poatspavm.
21J
J 850
Prespawn.
Postspawn.
Postspawn.
Preapawn.,
postspavm.
l
T
554
100
YI i>oatapawn.
Total
I
2
r 00s
~00
2459
200
..
375
100
~'.1 7
~07 8
- -
- 8 ..