C.M.1985/H:l
Report of Activities
International Council for the
Exploration of the Sea
PELAGIC FISH COMMITTEE
by
A. Maucorps
1984
BELGIUM
(R. DE CLERCK)
No market sampling of pelagic fish " .. s I>een carrie<l out in 1984.
Research vessel surveys with bot tom trawl on the Juvenile herring
and sprat were continued as given in the table below.
The research was linlited to lengtll measurelll<?uts.
Area
Objectives
Season
IVc
Belgian coast
April und
September
Recordiug' tlensities of'
illlJila ture herring and spra t
CANADA
(T.D.ILES)
All relevant research reported to NAFO.
DENtlARK
No report received.
- 2 FINLAND
(R. PARMANNE &. V. SJOBLOM)
No work carried out on pelagic fish other than reported to the Baltic Fish Committee.
FRANCE
(A. MAUCORPS)
Echantillonnage
HARENG
Zone
VI a north
North west
North sea (03)
Nbre d'echantillons Nombre de Nombre de
Examens
Periode Type de
poissons poissons des criteres
(t rimest re) poisson Bateau de Marche
§ges
mesures
radiaux
recherche
1
1
2
geniteur
adultes
...
10
7
..
3
1
2
13
480
320
682
629
1 547
1 480
6S4
283
2 100
8 700
82
127
208
134
532
46
133
75
237
1 004
2
509
166
1
3
3
6
3
4
1
3
4
1
4
juv.
adul tes
19
juv.
geniteur
10
19
3
adul tes
ANCHOIS
IGOlfe de Gascogne
VIII
2
adultes
12
3 592
,CHINCHARD
VIII
2
juv.
adul tes
18
9
10 614
392
t-lAQUEREAU
VIII
2
adultes
9
1 480
2
adultes
9
1 105
SARDINE
2
adul tes
18
3 448
PRA
IV b
IV e, VII d
VIII
1
1
2
j uv. et
adultes
19
10
9
1 981
1 413
1 552
Cent ra l North Sea
(09)
Southern North Sea
Eastern Channel
(12)
Celtic Sea
.
(13)
r
~'ERLAN
BLEU
lVIII
I~
- 3 -
Campagnes de bateaux scientifiques
Zone
Dates
Mer du Nord, Manche est
et ouest Ecosse
(IV, VII d, VI a)
7 - 30/02
Objectif
IYFS (CIEM)
Golfe de Gascogne
(vm a - b)
28/04 - 15/05
Evaluation acoustique du stocks d'anchois
de la cöte des Landes et prospection sur
les accores du plateau entre 46°00 et
49° N
Sud Mer du Nord Manche Est
<IV c - VII d)
7/11 - 30/11
Evaluation acoustique du stock de hareng
des Do.ns
- 4 -
GERM AN DEMOCRATIC REPUBLIC
(L. DANKE)
Sampling
Blue whiting
i..ged-
Area
Senson
VII, b, c
VII b,c
Vlb
FebrilD!"Y
11arch
IIa
JU:1Y
IIa
IIb
Juny
July
1
2
1
1
16
April
IVe E
August
IIs
August
August
Vb 1
7
15
2
9
4
654
1083
514
52
4859
2644166
1681
3851
1280
102
155
100
50
97
235
92
50
1'50
Research vessel surveys
Art8
N-Uorth See
IVo E
Norwegian Sea
Ha
Norwep:ian Seo
VI.> 1
Norwegian Sea
lle
Norwegi:Hl Sea
Vb 1
Ot,.iectives
Dat.e
2.8.84
3.e.-23.8.84
23.8.-24.8.84
)
)
)
i
)
)
)
)
25.8.8425.8.-27.8.84
)
)
)
)
Acoustic survey,
midwater trawlini!;
hydrograph..v
- 5 FEDERAL REPUßLlC OF GERMANY
(D. SAHRHAGE)
Species
Sampling
Area
Hebrides
(01)
w of SheUand
(02)
NW-North Sea
(03)
NE-North Sea
No of Sam pIes
Research Factory
Ship
Vessel
Type
cf
Fish
Season
imm+ad
irnm+ad
I
II
III
IV
adult
III
IV
ad+imm
adult
2
I
II
III
imm+ad
imm+ad
ad+irnm
11
III
ad+imm
19
4
II
III
I
III
I
II
III
ad+imm
11
ad+imm
25
(04)
N,V of Ireland
(06)
South Buchsn
(08)
Central lIorth
Sea
(09)
\!
of Ireland
(10)
S-North Sea
II
III
5
12
14
6
47
ad+imm
7
immature 9
6
imm+ad
immature 35
imrn+ad
25
imm+ad
8
IlERRING
No of Fish
measured aged examined
racially
2027
3326
4482
8610
507
2157
2010
18835
3699
378
200
200
400
200
100
200
500
500
334
100
1764
1985
1393
941
5211
2650
1517
169
99
800
300
200
335
100
700
300
200
I
imm+ad
9
1
6
I
irr,m+ad
4
322
100
I
ad+imm
4
249
100
3
72
adult
90
100
(12)
S of Ireland
(13)
Bristol Channel
(14 )
West Channel
I
(15 )
Research Vessel Surveys
Area
Date
Hebrides
(01)
NW-North Sea
South Buchan
Central North Sea
Central North Sea
Southern North Sea
~g~~
Hebrides
Central North Sea
(09)
(09)
(12)
(01)
(09)
Objectives
04.01.-02.02.84
06.02.-09.03.84
Gear Research
17.02.-28.02.!J4
Groundf1sh Survey
20.02.-28.03.84
Ground- and Felagic
Fish :.iurvey
International Young
Fish Survey
- 6 -
Hebrides
Nil of Ireland
W of Ireland
S of Ireland
Bristol Channel
I/est Channel
Mackerel (adults, eggs) and
other Pelagic Fish
18.06.-27.07.84
m;-Jlorth Sea
lIE-North Sea
South Buchan
Central ~orth Sea
:Iebrides
W of Shetland
N~:- North .Sea
N,/ of Ireland
Central North Sea
W of Ireland
Ground- and yelagic Fish
~3urvey
Herring, ~ackerel, Sprat and
Horse :.lackerel Survey
Species
Sronpling
Area
Season
JI-North Sea
Central North Sea
IVa
IVb
S-Jlorth Sea.
English Channel
Bristol Channel
S of Ireillnd
IVo
VIId,e
VIIf
VIIg-k
II
~·t cf Ireland
NW of Scotland
VIIb,c
VIa
II
II
No of Sampies
Research Vessel
I
I
5
32
20
2
6
3
6
2
2
II
I
II
II
SPRAT
No of ~'ish
measured
68
1620
670
308
315
167
495
83
59
Research Vessel Surveys
Area
Date
N-North Sea
Central North Sea
S-North Sea
IVa
IVb
IVc
English Channel
Bristol Channel
S of Ireland
W of Ireland
NW of Scotland
VIId,e
VIIf
VIIg-k
VIlb,c
VIa
Central North Sea ·IVb
06.02.-09.03.84
17.02.-28.02.84
26.03.-04.05.84
18.06.-27.07.64
Objectives
International Young Fish
Survey
Groundfish Survey
Mackerel (adults, eggs) and
other Pelagic Fish
Ground- and Pelagic Fish
Survey
- 7Species
Samnling
Seasen
i.rea
ll-North Sea
Type
ef
Fish
No of SampIes
Research Factery
Vessel
Ship
II
IVa
MACKEREL
No of Fish
aged
measured
5
398
III
adult
11
675
199
II
III
IV
ad+imm
adult
adult
32
II
adult
15
4294
877
1139
2350
400
200
296
250
II
.!li+i Il'm
44
5873
750
English Char.nel
II
VJId,e
ad+imm
6
1744
100
4
167
Central Nerth Sea
IVb
1!,: of .:icotland
VIa
"{
ef Ireland
6
5
VIIb,c
S of Ireland
VIIg-k
Bristel Chc.nnel
VIIf
II
Research Vessel Surveys
Area
Date
NY: ef Scetland
W of Ireland
S ef Ireland
Fristel Channel
English Channel
N-J;orth Sea
Central North ~ea
NiY ef Scetlan:i
Objectives
VIa
VIIb,c
VIIg-k
VIIf
VIId,e
IVa
IVb
1:ackerel (adul ts, eggs) and
ether Pelagic Fish
VIa
ilerring, MackereI, Sprat and
Horse Mackerel Survey
Cround- and Felagic Fish
Survey
Species
Sampling
Aren
English Channel
Season
VIId,e
I
II
Bristel Channel
VIIf
S ef Ireland
VIIg-k
II
VI ef Ireland
VIIb,c
11'.1 ef Scotland
VIa
II
III
II
III
I
Type
ef Fish
a11
No of Sam pIes
Research Vessel
6
1
4
43
21
12
22
60
EOHSE 1:ACKEREL
No ef Fish
measured aged
909
1409
11
10931
1972
2935
849
8524
104
81
10
713
151
41
238
93
- 8 -
Research Vesse1 Surveys
Objectives
Date
Area
English Channe1
Bristo1 Channes
S of Ireland
W of Ireland
NW of Scot1and
W of Ireland
NW of Scot1and
VIId,e
VIIf
VIIg-k
VIIb.c
VIa
VIIb,c
VIa
26.03.-04-05.84
Mnckere1 (adu1ts, eggs) and
other Pe1agic Fish
14.08.-03.09.84
Herring. Mayckere1. Sprat and
Horse Mackere1 Survey
Sampling
Species
Aren
Norwegian Sea
N-North Sea
Ice1and Grounds
Faroe Plateau
NW of Scot1and
Rockall-Bank
W of Ireland
Season
IIa
IVa
Va
Vb
VIa
VIb
VIIb.c
No of Samp1es
Research Vesse1
I
I
I
I
I
I
8
5
11
4
7
UI
33
6
9
I
BLUE WHITING
No of Fish
measured
aged
examined
racia11y
2392
957
2177
1239
2900
2677
7839
1532
50
SO
250
100
50
100
100
Research Vesse1 Surveys
Date
Area
Objectives
Wof Scotland
Rocka11-Bank
W of Ireland
VIa
VIb
VUb
04.01.-02.02.84
Gear Research
Norwegian Sea
N-North Sea
Ice1and Grounds
Faroe Plateau
NW of Scot1and/
Rockall-Bank
Wof Ireland
Ua
IVa
Va
Vb
Vla.b
20.02.-28.03.84
Ground- and Pe1agic Fish
Survey
VUb,c
Rockall-Bank
VIb
19.07.-28.07.84
Ground Fish Survey
50
50
250
100
50
100
100
------------------------------------------------------------------J~Q
(Jakob Jakobsson)
Sampling
BLUE WHITING
No. of samples
Type of fish
Res. vessels
Fish vessels
No. of fish
Measured
Aged
Area
Season
SE Iceland
June
Juvenile, immature
5
320
320
Irminger Sea
August
Juvenile, immature
6
460
50
SW, S, SE Iceland
Sept.
Juvenile, immature
42
2845
S, SE Iceland
Research vessel surveys
Area
Date
Objective
Blue whiting migration, abundance
SE, E Iceland
SW Norway Sea
3.6.-13.6.
estimates, hydrography, zooplankton.
S, E, N Iceland
9.8.-29.8.
Abundance estimates, O-group fish
survey, hydrography.
W, N Iceland
16.8.-29.8.
Abundance estimates, O-group fish
survey, hydrography.
'"
Sarnpling
CAPELIN
No. of sawples
Area
Season
Type of fish.
Res. vessels
W, N, E Ieeland
Jan.-Apr.
Mixed
33
SE, E Iceland
Jan.-Apr.
Adult
15
Iceland, E-Greenland
Aug.
Mixed
W, N, E Iceland
Oct.-Dec.
Mixed
No. of f ish
Fish vess~ls
rneasured
aged
ex. racially
4
6458
3300
100
28
4686
3520
200
36
6424
2740
51
1208
6570
Research vessel surveys
Area
Date
W, N, E, SE Iceland
11.1.-9.2.
W, N, E, SE Iceland
11.1.-9.2.
Objective
Abundance estimates
Abundance estimates.
T.S.
measurements
S, W Iceland
S, E, N Iceland
29.2.-15.3.
9.8.-29.8.
Spawning migration
O-group capelin and other spp. l-group
capelin abundance estimates
W, N Iceland
16.8.-29.8.
O-group capelin and other spp.
1 group
capelin abundance estimates
W, N, E Iceland
W, N, E Iceland
31.10.-21.11.
Abundance estimates
....o
31.10.-21.11.
Abundance estimates
I
I
J
-I
Sarnpling
HERRING
No. of samp1es
Season
Type of_fish
Jan.-Sept.
Mixed
N, NE Iceland
sep.-Dec. 1 )
Mixed
E, SE Iceland
Sep.-Dec.
Mixed
Area
Res. vesse1s
No. of fish
Fish vesse1s
measured
aged
ex. racia11y
17
5309
1912
1912
45
4483
3295
3295
4292
619
619
E, SE, S, W, NW,
N Ice1and
8
SE, S, SW, W, NW,
1)
19
Fishing season
Research vesse1 surveys
Area
S, E Ice1and
E Ice1and
Date
Objective
11.1.-9.2.
Abundance estirnates.
10.12.-21.12.
Abundance estimates
T.S. measurements
.....
.....
-
-----
-------------------,
- 12 -
IRLAND
(J. MOLLOY)
Type of
fish
Season
Area
No. of
sarnples
(Market)
No. of
fish
measured
No. of
fish
aged
Speeie~;
No. of fish
exarnined
racially
Herring
Div. VI, a
North West
11, IV, V, VI
VII, IX, X, XII
Adult
28
6105
1046
1046
Div. VII, b-e
West
I, 111, IV, V, VI
VII,VIII,IX,X,XI,XII
Adult
24
6417
991
991
Div. VII, f
South West
II, IV, V, VI, VIII
IX, X, XI, XII
Adult
28
2167
1148
1148
Div. VII, g
Celtie Sea
I, 11, VIII,
IX, X, XI, XII
Adult
51
7439
1993
1993
Div. VII, a
Irish Sea
I, II, VI, VII
VIII, IX, XI
Adult
30
6208
1273
1273
Speeies;
Mackerel
Div. VI, a
North West
I, 11, III, IV, V
VII, IX, XI, XII
Adult
28
6891
2628
-
Div. VII, b
West
II, IV, VI
Adult
13
2494
483
-
Div. VII, j
South West
I, II, IV
Adult
5
557
258
-
Species:
Div. VII, j
I, 11, X, XI, XII
Adult
24
4095
Div. VII, a
I, X
Adult
4
538
-
Research Vessel Surveys 1984
Time
Area
Objeetive
Celtie Sea
October to February '85
Larval survey to obtain
estimate of abundance of
herring population
VI, a
North west
October to November
Larval survey to obtain
estimate of abundanee of
herring population
VII, a
Irish Sea
February
Young herring survey
Sprats
-
-13 THE NETHERLANDS
(A. CORTEN)
Herring/Sampling
Quarter
of year
Area
Type of
fish
research
vessel
VIa North
11
11
2
adult
3
11
1
11
3
4
11
IVa West
2
11
11
3
2
11
3
11
09 Central North Sea
2
11
11
11
"
11
3
11
11
11
11
11
3
1
VIa South + VIIb. c
11
11
11
11
11
11
11
08 South Buchan
11
11
11
12 Southern North Sea
11
spawnin
adult
11
11
11
2
11
11
11
11
11
11
11
11
11
11
3
4
11
11
11
11
South Ireland
11
11
market
spawning
3
4
adult
1
140
25
1.597
325
Total
1
125
25
3
366
hf\?
75
1?5
12
1,768
300
26
3.779
480
650
3
1
171
1
134
12
1.877
examined
75
25
25
300
2
287
50
37
6,675
925
3
1
455
75
25
19
3.624
1.168
-
-
-
-
-
121
25
-
2
389
50
-
-
150
23.9G3
3.750
-
-
11
aged
13
)
-
11
4
measured
racially
-
11
11
No. of fish
No. of samples
7
1
130
475
175
Herring/ Research vessel surveys
Objectives
Area
Dates
IVa, b, c North Sea
31 Jan. -
2 March
leES Young Fish Survey
Tag recapture + echo survey
IVa Northern North Sea
2 July - 12 July
IVa Northern North Sea
29 Aug. - 18 Sept.
IeES lIerring larval survey
IVb Central North Sea
IVc + Vlld Southern North Sea
IVc Dutch Waddensea
11 Sept.- 20 Sept.
10 Dec.
20 Dec.
20 Febr.- 19 Apr.
ICES Ilerring larval survey
ICES lIerring larval survey
lIerring larval survey
-
-lli -
Mackerel/Sa mpling
Quarter
of year
Area
Type of
fish
No. of fish
No. of samples
research
market
measured
aged
IVa Northern North Sea
2
IVb Central North Sea
3
2
..
..
..
...
"
"
"
.
.
..
"
"
"
."
"
"
"
"
"
"
"
"
"
"
"
.
VII South of Ireland
"
"
"
"
"
"
..
2
"
"
"
3
4
"
.
2
"
3
4
"
1
"
"
.
2
..
"
"
3
4
"
"
-
-
.
1
VIa N.W. Ireland
.
.
3
4
IVc Southern North Sea
"
adults
examined
racially
vessel
2
104
50
10
527
187
3
4
313
260
75
104
1
11
59
1,004
275
-
-
25
3
289
75
2
148
50
2
4
97
283
100
4
302
100
6
425
150
50
-
43
3,808
1,075
21
1,454
525
1
-
3
87
203
75
-
120
9,363
2,941
-
-
Total
-
-
25
MackerelIResearch vessel surveys
Area
Dates
Objectives
IVa, b Central/Northern North Sea
IVa Northern North Sea
22 May - 14 June
17 July - 24 July
ICES mackerel egg survey
Mackerel parasites
l-j arse
mackerelISa rnpling
Area
Quarter
of year
Type of
fish
No. of sampIes
research
vessel
VIa N.W. Ireland
VII South Ireland
3
4
1
"
2
.
..
"
Total
"
.
"
.
"
.
..
"
3
4
adult
"
"
"
"
"
-
-
-
market
No. of fish
measured
205
aged
3
6
667
9
10
850
225
1,136
::>50
50
200
950
2
-
8
371
1,376
-
38
4,605
examined
racially
-
75
150
-
-
.
-
-
- 15 -
NORWAY
(O.E. DAHL & A. DOMMASNES)
Herr ing (.t.l.u..D.n Harengus)
Sampling
Area
Season
Type
of
fish
50ulh 01 62'
Research
vessel
Harket
N
No. of
fish
measured
No. of
fish
aged
NO.of
fish
exam.
racially
Skagerrak
lila
Northern
North Sea
IVa
I
II
III
IV
Adult
Adult
Adult
Hixed
I
Immat.
Adult
Adult
Adult
11
111
IV
Norwegian
coast IVa
I
11
111
IV
Central
North Sea
IVb
I
11
111
IV
NW North
Sea
Via
111
IV
25
Adult
Adult
Immat.
Immat.
Immat.
Adult
Adult
Adult
400
300
100
400
400
300
100
400
300
300
100
400
100
19148
15115
1921
100
1200
1148
700
384
100
381
300
215
100
381
300
215
100
281
300
100
1884
56
81
151
875
36
1884
2237
2980
3061
13
12
1100
1075
100
100
236
151
23
1
4
3
23
Adult
Adult
28
34
81
151
Research vessel survey
Season
Objectives
North Sea
Jan/Feb
Int. Young fish survey,
herring
NW North Sea
July
North Sea herrring acoustic
survey
Skagerrak along
the Norw. coast
north to Va rangerfjord
Oct/Nov/Oec
Fish survey. O-group
sprat/herring
IArea
- 16 Sprat (Sprattys sprattys)
Sampling
Area
Norweg ian
coast
IVa
Season
IV
Central
North Sea
IVb
Type
of
fish
No. of samples
Research
vessel
Harket
Hixed
10
Adult
10
No. of
fish
measured
No. of
fish
aged
1000
H
1000
5360
Research vessel surveys
Season
Objectives
North Sea
Jan/Feb
Int.Young Fish Survey.
sprat
Skagerrak - along
the Norw. coast
north to Varangerfjord
Oct/Nov/Oec
Fish survey. O-group.
sprat/herring
IArea
200
- 17 -
Mackerel
Sampling
(~
Season
Area.
scombrys)
Type
of
fish
No. of samples
Research
Market
vessel
No. of
fish
measured
No. of
fish
aged
Norwegian
Sea. lla
111
Mixed
391
388
Skagerrak
11 Ia
11
Mixed
100
99
Northern
North Sea
IVa
II
111
IV
Mixed
Mixed
Mixed
99
713
224
98
712
223
Central
North Sea
IVb
111
Mixed
100
100
NW North
Sea. Via
IV
Mixed
200
200
SW Ireland
VIIg-k
11
Mixed
495
492
Research vessel surveys
IArea
North Sea
Season
Objectives
Jun/Aug
Egg and larval survey.
mackerel
Tagging
Area
SW Ir~land
VJlg-k
North Sea
Skagerrak
-
IV'.b. 11 I.
Season
Type of
tag
No.
tagged
11
Int.
steel
14 512
~Iackerel
111
Int.
steel
13 587
Mackerel
Type of
fish
- 18 -
0
Herring 1llJ!Qtl harengus) North of 62 N
Sampling 19H
Area
Norw. coast
(Finnmark)
I
8arents Sea
I
Season
I
II
III
IV
I
Type
of
fish
Juv.
lIa
Total
No. of
fish
aged
386
1468
553
1121
71
389
135
428
Juv.
11
24
14
6
500
2189
1194
713
20
752
322
Hixed
34
Hixed
11
I
II
UI
IV
No. of
fish
measured
5
16
7
13
IU
IV
Norw. coast
No. of sampIes
Research
vessels Harket
9
5
51
49
1
3
11
7552
905
678
5919
2407
809
548
3141
201
64
23298
9028
No. of
fish
exam.rac.
- 19 Research vessel surveys 1984
Date
Area
Norwegian coast
0
0
62 N - 70 N
Objectives
January - March
Experimental fishing for recapture of tags. Acoustic
survey of spawning grounds.
Sampling of commercial
fishery.
Norwegian coast
62 0 N _ 70 0 N
April - May
Oistribution of herring larvae.
Norwegian coast
April - May
Tagging
Barents Sea
May - June
Acoustic survey of !-group
Barents Seal
Norwegian Sea
June
Post-larvae distribution
Barents Seal
Norwegian Sea
August
O-group distribution
Norwegian toast
November - December
0- and !-group acoustic survey
sampling commercial fishery
Norwegian cgast
November - December
0- and I-group acoustic survey
0
0
62 N _ 69 N
0
0
62 N - 70 N
north of 70 N.
southern Barents
Sea
~1984
Area
Norw. coast
Season
Type of tags
No. tagg.
Type of fish
11
internal
29313
adult
Recoveries
- 20 -
Capelin (Mallotus villosus)
Sampling 1984
Area
Barents Sea
I
IIa - IIb
-
Jan Mayen
IIa
Season
Type
of
fish
-
Mixed
I
IV
No. of samples
Research
vessels Market
No. of
fish
aged
307
2063
159
16510
1648
307
2222
253823
29508
III
Total
No. of
fish
measured
237313
No. of
fish
exam. rac.
27860
Research yesSft1 surveys 1984
Area
Date
Objectives
Barents Sea
January - February
Mature capelin
Barents Sea
March - April
Spawning grounds
Barents Sea
May - June
Late spawning capelin
Barents Sea
May - June
Larvae
Jan Mayen
August
Scouting. sampling commercial
Barents Sea
August
O-group survey
Barents Sea
September
Acoustic survey
catches
.!.!.a..a..iJ!.
None
1984
- 21 -
Blue whiting (Hicromesistius potassoul
Samoling 1984
Area
Season
No. of samples
Research
vessels Harket
No. of
fish
measured
No. of
fish
aged
16
9
26
I
II
III
Northern
Norwegian
Sea.lIb
13
514
234
1818
45
2
31
20
1814
2382
2647
1381
418
509
564
200
18
14
103
136
1
10
8450
9850
100
825
2296
1102
50
106
315
32201
7111
North Sea
IVa
IVb
I
II
III
IV
4
1
8
West of the
8ritish Isles.
Faroes
Vb.VIa.VIb.
VIIb.c.g.h.
Lk
I
II
III
IV
Total
903
458
3149
No. of
fish
exam.rac.
66
197
Mixed
Barents Sea
Norwegian
Sea
lIa
Type
of
fish
24
31
Research vessel surveV$ 1984
Area
Objectives
Date
-
April
Acoustic survey - abundance.
distribution and structure of
spawning stock.
West of British
Isles
Harch
Norwegian shelf
April - Hay
Distribution and structure.
Norwegian Sn
August
Acoustic survey (internationall.
Abundance. distribution and
structure of total stock.
l..!.9..9.i!J.g 19B4
None
- 22 -
Great silver smelt (Argentina
~)
Sampling 1984
Area
Season
Norwegian Sea
Ila
I
West of the
British Isles
No. of samples
vessels
Harket
No. of
fish
measured
1
1
30
121
3861
121
1962
Research
Hixed
No. of
fish
aged
11
22
I
1
2
52
131
32
131
1
3
11
11
61
61
4243
2324
North Sea
IVa
Type
of
fish
11
I
11
No. of
fish
8Kam.rac.
VIa.b
Total
30
32
Research vessel surveys 1984
Area
Norwegian shelf
Date
Objectives
April - Hay
.I.!sll!lg 1 9 8 4
None
Poland
No report recelved.
Distribution and structure
PORTUGAL
(L BARRACA)
!chantillonnage
Espece - Sardina pi1chardus (Wa1b.)
Region Saison
Type de
poissons
1er trimestre
2eme trimestre
IXa
3eme trimestre
N. echantillons
N. poissons
Navire de
mesures
recherche Marcha
Tous
-
N. poissons dont age determina
otolithes
ecailles
135
10212
645
267
208
15364
450
103
237
17396
413
160
4eme trimestre
23
181
18714
389
193
TOTAL
23
761
61686
1897
723
Campagne d'investigation
Region
lXa
(plateforme contine~
tale portugaise)
Objectifs
Date
22 novembre - 10 decembre
campagne acoustique experimentale,
pour 1a sardine
I
'"
W
I
Echantillonnage
Espeee - Mieromeeistius poutassou (Risso)
RoSgion Saison
Type de
poissons
ler trimestre
2eme trimestre
IXa
N. echantillons
Navire de
recherche l.lareM
N. poissons N. poisBons dont N. de poissons obseI
age determine
ves par races
mesures
-
104
6574
50
127
12507
10
99
8622
-
107
7957
60
437
35660
Tous
3eme trimestre
4 eme trimestre
TOTAL
-
-
76
53
-
129
Campagne d'investigation'"
'"
R&gion
Date
IXa
15 - 31 mai
Objectifs
distribution du merlan bleu en profondeur et son comportement
pendant 1e jour et pendant la nuit
catte campagne n'a ete pas seulement rea1isee pour etudier le merlan bleu
I
..,.
I\J
I
~~
~
Echanti110nnage
Espece - Scomber scombrue L.
Region Saison
l
er
'l'ype de
N. echantillons
N. poissons N. poissons dont age
de
poissons Navire
determine (otolithes)
meSUTeS
recherche Marche
-
trimestre
i,me
lXa
trimestre
eme
trimestre
3
Tous
i,me trimestre
TOTAL
224
17135
157
-
208
12267
171
166
9904
125
3
175
11290
356
3
773
50596
809
Espece - Scomber japonicus Houttuyn
Region Saison
l
Type de
poissons
er
-
trimestre
eme
2
trimestre
lXa
eme
3
trimestre
eme
4
trimestre
TOTAL
N. echantil10ns
N. poissons N. poissons dont age
Navire de
meSUTes
determine (otolithes)
recherche Marche
Tous
-
17
72
30
102
74
48
348
230
44
227
171
139
749
547
72
I
'"
V1
I
Echantill onnage
Espece - Trachurus trachurus (L.)
Region Saison
1
IXa
Type de
N. echantillons
N. poissons N. poissons dont age
de
poissons Navire
mesures
determine (otolithes)
recherehes Marche
er
trimestre
eme
2
trimestre
eme
3
trimestre
eme
4
trimestre
Tous
-
246
19915
462
34
257
23135
556
203
14643
402
202
14582
421
908
72275
1841
-
TOTAL
34
Campagne d'investigation
Region
Date
Objectifs
Aires se1eotionnees
de la plateforme
continenta1e portugaise
14 - 31 mai
distribution d'espece relativement a la
plateforme continentale en des aires seleationnees.
I
'"
a-
- 27 -
~J()
repOl't. rece i ved.
SWEDEN
(0. HAGSTRÖM)
Sampling
Area
Kattegat
No. of SampIes
Research
No. of Fish
Vessel
Market
Measured
15
68
29 110
3 287
-
59
17 435
945
446
5
75
25 915
1 534
866
X, XI, XII
-
72
21 553
834
707
I, 11, III
10
9
7 467
1 939
1 939
-
3
1 114
187
187-
VII, VIII,
IX
10
30
12 495
2 881
1 415
X, XI, XII
-
26
8 622
751
624
-
-
-
VIII, IX
9
-
4 300
1 380
138
49
342
128 011
13 738
9 387
Type of
fish
Season
I, 11, III
IV, V, VI
VII, VIII,
IX
Skagerrak
IV, V, VI
North Sea
Baltic
Total
-
Aged
-
RESEARCH VESSEL SURVEYS
Area
Season
Kattegat, Skagerrak
II
Objectives
Investigation on young fish;
herring larvae and stock separation
/<attegat, Skagerrak
VIII,
Acoustic survey;
~altic
IX
herring
No. of Fish
examined
racially
3 065
-
Pilchard
No of fish
No of Sampies
Area
Research
Vessel
South West
Bi sc ay
7E-H
8
2
2
Market
--17
-
Measured
Otolithed
Rac ial
rnvestigation
-2734
232
719
232
Mackere 1
Research
Vessel
North Sea
West of Scotland
lri sh Sea
South West
Celt ic Sea West of Ireland
Biscay
No of fish
No of Sampies
Area
6
7A
7E-H
7B, C, J
2
1
2
8
2
8
7
I,
Market
Measured
Otol ithed
--114
-
243
16
1982
13438
2251
243
16
195
1965
191
3486
798
-
Racial
rnvestigation
ru
...:J
24
Scad (Horse Mackerei)
Area
No of Sampies
Research
Vessel
North Sea
West of Scotland
lrish Sea
South West
Celtic Sea West of Ireland
Biscay
4
6
7A
7E-H
7B, C, J
4
3
8
6
1
1
Market
---3
-
No of fish
Measured
Otolithed
Racial
Investigation
55
72
3946
3371
72
890
649
5368
872
-
I
w
0
I
I
RESEARCH VESSEL SURVEYS, 1984
Area
Month
Objectives
North Sea and English Channel
North Sea and English Channel
North Sea
Continental Slope
North Sea
Celtic Sea and Western Channel
North Sea
Irish Sea
North Sea
Continental Slope
January
February
February
March
July
July
August
September
October
November/December
Herring Larval Survey
Herring Acoustic Survey
International Young Fish Survey
Trawl Survey
Herring O-gp survey
Groundfish survey
Herring Acoustic Survey
Young Fish Survey
Herring Larval Survey
Trawl Survey
w
....
- 32 UNITEO KINGOOM
(Scotland)
(R.S. ßAILEY)
HFRRING
Silmpling
A:-e;;,
c;t:>ason
Type of
flsh
~o
cf saT'lples
Rf'seoarch
Ves<::>f>l
01
02
03
Hebrides
Jan-Mar
July-Sept
West of Shetland
North Western North Sea
No of fish
~'arket
".."sured
aged
Examined
raclallv
Mixed
Adult
0
2
7
0
1440
lTI
507
613
0
0
Jan-Mar
~"i
Apr-Jun
-Tul-Sept
Oct-Dec
Adult
5
0
2
10
lB
5
2135
2338
4285
1141
397
5';7
814
220
0
0
200
0
4115
4774
8';'lR
40RO
747
1'43
173R
226
0
0
290
xed
Mlult
7
0
Jan-".ofa!"
~Uxed
22
I\pr-.Tun
-Tul-Sept
Oct-llec
Adult
0
~iXE'd
Iml"1atu.... ~
61
21
3
25
23
0
'UxE'"d
0
04
North Eastern North Sea
Jul-Sept
?JIixed
15
0
158
f14
0
06
North West l:-elan<l
,Tul-Sept
"
1
0
25'l
59
0
07
West of Scotland
Jan-'lar
Apr-Jun
Jul-Sept
Oct-Dec
"
Adult
:>1ixed
18
"
4900
8192
7523
3576
115';
647
88'l
115<;
100
0
19
6
55
52
5
Jan-Mar
Jul-Sept
Oct-Dec
"
"
9
23
0
6
9
0
1138
2275
1092
169
525
122
0
0
0
'1ixed
24
24
2
0
0
0
3882
1595
425
331
385
23
I)
08
09
South Buchan
Centra1 North Sea
AREA
Northwestern
North See
Jan-Mar
Jul-Sept
Oct-Dec
SEIISON
-TUNE
Immature
"
Immature
T4G TYPE
~lAGNETIC
IUCROTAG
0
NO. TAGGEO
10,000
TYPF 01" FISH
ADULT
0
0
3'l2
0
0
RECOVE'lIFS
48
HERRING
- 33 -
Research Vessel Surveys
Area
Season
Ohjecrives
North Western North See to Germany
Blg"r
Febrw3ry
TntprnationAl Young Fish
North end West of Scotland
Jan-Feb
Recruit Trawling
Flrth of Clyrte (Ballantrae Rank)
Feb-Mar
Larval SurveYt Acoustic
and Trawling Survey
North Western North See
Jun-July
Microtagglng end Tag Recovery(3)
North Western North Sea
July
Acoustic and Trawling Survey
West of Scotlanrt (Hebrldes)
Aug-Sept
Trawling and Larval Surveys
Moray Flrth to Firth of Forth
September
La~val Survey(l)
Northern North Sea
September
Larval survey(l)
West of Scotland and North West Ireland
Sep-Oct
Larval Survey(l)
Octoher
Larval survey(l)
Novemher
Acoustic and Trawling Survey
Firth of Clyde
Survf:>Y
Surv~y
Notes
(1)
(2)
(3)
Tn eccordence with previous leES resolutions
In accordance with C. Res. 1980/2:24
In accordance with C. Res. 1980/2:25
Additional Research Activitles
Continuation of herring parasitological work wlth a view to using parasitological
da ta for studylng models of migration.
(2)
- 34 -
MACKEREL
Sampline
No of Sa",ples
Season
Area
IVa Northern North
.§!2.
IVb Central North
~
VIa West of Scotland
Type of
Fish
Research
Vessel
Harket
No of Fish
Measured
Aced
Jan
Apr
Jul
Oct
-
Mar
Jun
Sep
Dec
1mm/adult
8
1
216
104
1mm/adult
1mm/adult
37
1
717
235
371
73
Jan
Apr
Jul
Oct
-
Har
Jun
Sep
Dec
1mm
1mm/adult
1mm/a::lult
adult
1
4
26
1
1
1
143
504
58
143
319
54
Jan
Apr
Jul
Oct
_
-
Mar
Jun
Sep
Dec
1mm/a::lult
1mm/adult
1mm/adult
1mmladult
1
7
3
21
72
930
234
2094
8270
4<:<:
JJ
56
627
1619
5
1
14
Research Vessel Surveys
Objectives
North Sea
North West of Scotland
June
October
Egg Survey
Acoustic survey
Other Research Activities
Continuation of mackerel parasitological work with a view to determinine stock
mixing.
- 35 SPRAT
Samplinr;
No of Samples
Area
Research
IVa Northern North
~
IVb Central North
~
VIa West of
&'ötI'and
No of Fish
Season
Commercial
Heasured
Aged
Jan
Apr
Jul
Oct
-
Mar
14
1
1904
244
Jun
Sep
Dec
14
22
(;
2435
5441
411
417
Jan
Apr
Jul
Oct
-
}lar
39
5801
421
Jun
Sep
Dec
13
2583
1,58
Jan
Apr
Jul
Oct
-Har
8
6
2150
205
- Jun
15
31
10017
743
- Sep
- Dec
Research Vessel Surveys
~
Objectives
Western North Sea
Jan
Acoustic and trawlinc survey
(in accordance with C Res 1981/2:22)
Western North Sea
Dec
Acoustic and trawling survey
(in accordance with C Res 1981/2:22)
Western North Sea
Dec
Inshore trawling and echo sounder
survey
Sgualus Ancanthias (Spurdog)
Sampling
Lengh measurements continued to be taken from commerciaJ and research vesseJ sampIes.
~
No new tagging experiments were carried out but recoveries from previous experiments
continued to be monotored.
- 36 -
~
(R. C. HENNEMUTH)
Atlantic Herring
Trends in relative abundance of Atlantic herring in 1984 were monitored
based on Northeast Fisheries Center spring and autumn research-vessel surveys,
and an additional survey was conducted in winter specifically to assess
herring stocks in the Gulf of Maine/Middle Atlantic region.
An estuarine
sampling program conducted by the Massachusetts Division of Marine Fisheries,
and larval herring studies conducted by the Maine Department of Marine Resources,
provided independent estimates of year-class strength.
Studies were undertaken by the University of l1aine and Maine Department
of r1arine Resources to document the distribution of spawning beds in coastal
Maine waters.
The Massachusetts Division of Marine Fisheries, in cooperation with the
Northeast Fisheries Center, tagged herring in the Southern Gulf of Maine
region to clarify stock intermixture patterns.
The University of Massachusetts is completing studies, in conjunction
with the Northeast Fisheries Center, to investigate stock structure, based on
biochemical and morphometric analyses.
- 37 -
Atlantic Mackerel
The Northeast Fisheries Center completed an assessment of the status of
the Northwest Atlantic mackerel stock for use in establishing catch quotas in
USA waters for 1985-86.
The Northeast Fisheries Center, the Polish Sea Fisheries Institute, and
the GRYF Deep-Sea Fishing Company cooperated in a research fishery for mackerel
during January-April 1985 between Georges Bank and Cape Hatteras, North Carolina.
Two Polish factory stern trawlers participated in this fishery.
In addition,
the Polish R/V WIECZNO participated in a survey for mackerel (and sea herring)
in the above area during April 1984.
The Northeast Fisheries Center completed analyses and several reports
comparing mackerel egg health with surface-water heavy metals, toxic hydrocarbons,
temperature, and salinity.
There was further collection and analysis of data
on the prevalence and intensity of infection of age-1 mackerel by hemoparasites.
Butterfish
The Northeast Fisheries Center conducted assessment analyses on butterfish
for use in managing that fishery in 1985-86.
Spiny Dogfish
The Northeast Fisheries Center prepared areport on changes in abundance
and population structure of spiny dogfish in the Northwest Atlantic.
- 38 -
Sharks
The Northeast and Southeast Fisheries Centers completed aseries of
three papers on shark catches from fisheries in the Northwest and Western
Central Atlantic and Gulf of Mexico, which will be published in 1985 as a
NOAA Technical Report.
Northeast Fisheries Center staff members prepared several scientific and
popular publications (in print) on apex predators, primarily on large Atlantic
sharks.
The subjects included:
age and growth of mako and sandbar sharks;
food habits and daily estimates of sandbar sharks and swordfish; biomass
estimates and amount of prey consumed by sharks, tunas, and swordfish on
Georges Bank; and distribution and abundance of white sharks in the Northwest
Atlantic.
Other publications dealt with results of the cooperative shark-tagging
program.
In 1984, over 4.000 sharks of two dozen species were tagged.
Tag
returns provide new information on the migration of several species of sharks
and swordfish, including first estimates of transatlantic movements of the
mako shark and several transatlantic recaptures from blue sharks.
Some tags
were returned after over ten years at liberty and over distances of 3,000 miles.
The Southeast Fisheries Center participated in a South Carolina t·larine
Resources Department project on the utilization of sharks for food.
on the edibility characteristics was provided on seven species.
Information
- 39 -'
Alewives,.Blueback Herring, and Shads
The Atlantic States Marine Fisheries Commission began preparing a coastwide
management plan for the East Coast stocks of these species. Research on the
population dynamics of alewives and blueback herring was conducted by the Maine
Department of Natural Resources and the Virginia Institute of Marine Science.
The Connecticut Department of Environmental Protection studied the American shad
population in the Connecticut River. Other states monitoring these stocks
included Massachusetts, New Jersey, Pennsylvania, Maryland, Delaware, North
Carolina, South Carolina, and Georgia.
Bluefish
The State University of New York at Stony Brook continued an examination of
factors influencing the offs hore distribution of bluefish, based on Northeast
Fisheries Center survey data.
The Northeast Fisheries Center is conducting studies on the feeding behavior
and food preference of the species.
A study on the level of PCB's in bluefish from Atlantic coastal USA waters
was begun, involving the Northeast and Southeast Fisheries Centers. The eventual
planned use of these data will be for evaluation of the potential human consumption
questions by State regulatory agencies.
Striped Bass
The National Marine Fisheries Service and US Fish and Wildlife Service
completed a study on the effects of fishing and pollution-related mortality
on Maryland striped bass. Monitoring of East Coast stocks was continued by
Massachusetts, Connecticut, New York, New Jersey, Maryland, Virginia, and
North Carolina. Experimental studies were conducted on the effects of pH and
contaminants on striped bass larvae in the Nanticoke River, Maryland (Johns
Hopkins University). Additional studies were conducted on predation on striped
bass larvae by other fish species (East Carolina University), the effects of
contaminants on disease susceptibility (US Fish and Wildlife Service), the
effects of chlorinated sewage effluent on the nutritional value of food organisms
for striped bass larvae (University of Maryland), and stock identification using
eye-lens protein analysis (University of Rhode Island) and mitochondrial DNA
(City University cf New Yerk).
- 40 -
Atlantic Menhaden
The Southeast Fisheries Center prepared an assessment update for the
highly migratory Atlantic menhaden stock which ranges from the east coast of
Florida to Nova Scotia along the Atlantic coast.
This assessment is based on
purse-seine landings data from 1940 through 1981 and port sampling data on
size and age from 1955 through 1981.
Results of annual coast-wide tagging
studies are also incorporated into the assessment.
Analytical methods used in
the assessment include yield-per-recruit analysis, surplus-production models,
and an investigation into spawner/recruit relationships.
A new assessment is
underway based on purse-seine landings and port sampling data through the 1984
fishing season.
An age-structured population simulation model (MENSIM),
prepared under contract by the University of North Carolina, is being used to
address management concerns be fore the Atlantic States Marine Fisheries Commission.
Gulf Menhaden
The Southeast Fisheries Center prepared an assessment update for the Gulf
menhaden stock which ranges from the west coast of Florida to the Yucatan
Peninsula in Mexico along the Gulf coast.
This assessment is based on purse-
seine landings data from 1946 through 1983 and port sampling data on age and
size from 1964 through 1983.
Results of annual coast-wide tagging studies
are also incorporated into the assessment.
Analytical methods used in the
assessment include yield-per-recruit analysis, surplus-production models, an
investigation into spawner/recruit relationships, and an age-structured
population simulation model.
Gulf menhaden management is coordinated through
the Gulf States Marine Fisheries Commission.
- 41 -
Ecosystem Studies
The Southeast Fisheries Center synthesized available ecological
information and fishery data to quantify the relationship between primary
production and coastal fishery yield along the east coast of the Uni ted States
from 31 0 to 41 0 N latitude.
Conclusions include:
(1) algal production is
inadequate to support the system. i.e .• vascular plant production is also
needed; (2) detritus. a frequent dietary constituent. still contains at least
40% of the plant material from which it was derived; (3) the most rapid
advances in understanding this fishery production system may come from studies
of detritus production and utilization. forage fish diets. and monthly rates
of both fora ge fish and pre-recruits.
_ 42 -
Bluefin Tuna
The Southeast Fisheries Center continued its assessment of Atlantic
bluefin tuna stocks in 1984, using catch and catch rate data on coastal rodand-reel fisheries and high-seas longline fisheries.
Indexes of abundance for
large and small fish in the western Atlantic were developed and adjusted to
remove variations due to varying catchability and aggregation of longline
sets.
A virtual population analysis calibrated to the CPUE indexes was
conducted to estimate stock-size changes in recent years.
A sample survey
continues to provide an estimate of the magnitude of the catch of small fish
caught by the rod-and-reel sport fishery and as a by-catch of the purse seine
skipjack fishery.
An analysis of the 1982-84 data on the rod-and-reel fishery
is being undertaken.
An ichthyoplankton survey was carried out in 1984 in the
Gulf of Mexico bluefin tuna spawning grounds, thus continuing the time series
of these data.
Proposed tagging studies for bluefin tuna are being considered
as a future means of indexing the abundance of juvenile fish.
Refinement of
the cohort analysis continued, using catch estimates and various measures of
CPUE.
Blue Marlin. White Marlin, Sailfish, and Swordfish
Emphasis in 1984 was placed on developing a USA swordfish data base in
order to facilitate stock assessment research.
Data for over 200,000 swordfish
representing 1978-84 catches have been processed and are being used to investigate the management of the fishery through such measures as seasonal closures
or minimum size limits.
A review is also being completed of the stock structure
hypotheses of swordfish.
Work continues toward a comprehensive stock assessment
of sailfish; data are being assembled on USA recreational and foreign longline
- 43 -
catchest and it is expected that a preliminary virtual population analysis
will be conducted in 1985.
Work on age and growth studies of marlins. and monitoring of the USA
recreational catch from tournament and dock sampling. continues to add valuable
information which will be incorporated into assessments for these species.
Over 100 sport-fishing tournaments were sampled in 1984 for catch and effort
statistics of marlin and sailfish and for provision of materials for age
analysis.
~
The Cooperative Gamefish Tagging Program completed its 30th year of
activity in 1984.
This program enlists the cooperation of recreational
anglers in tagging and releasing blue marlin. white marlin. sailfish.
swordfish. and tunas.
In 1984. anglers tagged and released 2.423 fishes of
more than 12 species as of October.
- 44 -
V.S.S.R.
(PINRO, l\Iurmansk)
During 1984 specialists from the PINRO laboratory of pelagic
fish continued studies on biology of Atlanto-Scandian herring, blue
whiting and, partly, mackerel in the Norwegian Sea, capelin and polar cod in the Barents Sea and in the Spitsbergen area;
Conditions of the commercial species stocks, peculiarities of
their concentrations
distribution, length and age composition of
fish were studied during thc research vessels "Persey 111", "Menzelinsk", "Kokshaysk", "Alaid", "Artemida" , "Vilnyus", "Captain Demidov" . cruises~
In March-June the R!V "Persey 111" carried out an acoustic survey of blue whiting stocks in the spawning grounds area and in the
Bouthern Norwegian Sea. In August this vessel took part in the international expedition on blue whiting stock assessment in the 110rwegian Sea. As in previous years oceanographic observations in the
NO~7egian
and Greenland Seas were carried out in May-June together
with Icelandic scientists.
In August-September a joint Soviet-Norwegian survey of the
Q-group of commercial fishes of the Barents Sea and adjacent waters
was carried out; in September an acoustic capelin stock survey was
undertaken.
The results of investigations served as the basis for prepared
for the ICES Working Groups recommendations on the size of allowable
catch of pelagic fishes in future~
- 45 -
MATERIALS
collected on pelagic fishes in 1984
IOES
area
I
rr a
I1b
•Numbel' of •
•
•
•
Quar-:
:
Type
: Month: of !ish : fish colle4 Numbel' : Age : Racial:
: t
r- : of fish : deter-: analy-:
tel' :
:
• a
• ma
• measured. miDa-. sis •
: tions :
:
: sea : ket :
:::
3
4
6
7
8
9
5
Blue whiting
I Pl'espawniDg
124
.in Pl'espawning
339
1Il Pl'espawning
6230
100
1
6693
100
Total
1
IY Postspawning
2
8422
200
y Feeding
28038
7
800
TI
FeediDg
YI
4
27361
400
Total
63821
HOO
!3
lnFeeding
19005
600
6
llil Feeding
17438
500
l!!
5
IX Feeding
1452
Total
37895
II
lIOO
1Y
X Feeding
2
200
6661f
Gl'OSS amount
Yill Feeding
ill
IX Feeding
Total
X Feeding
Gross amount
lY Postspawning
Y Feeding
rr
JI Feeding
27
E5073
I
960
3
I1
100
IY
1Ya
Yb
Gl'OSS amount
1 Pl'espawning
TI Pl'espswning
I
11! Spawning
Total
IY Postspawning
Y Postspswning
TI
Y1 Postspawning
Total
571
1531
2800
100
300
1100
4
1
2
1
1631
720
695
696
400
100
200
100
4
I
2
I
4
21II
4457
4964
2994
12415
II415
1273
1899
14587
400
100
200
100
400
2
1
3
200
100
300
- 46 -
2
I
yb1
ill
3
4
Yrr
X
Xl
I
Feeding
I
Feed1ng
PrespawniDg
ym
Total
IY
xrr
Total
Gross amount
Ha
Y1b
Yn
1
llJ
rr
lY
I
1"
w
"1
TI
I
SpawniDg
I
Postspawn~
I{
5
SpaWI1iDg
PostspaWD.
lU
XI]
TI
TI
I
I
FeediDg
FeediDg
Total
I'f
XI
XI1
PrespawniDg
PrespaWDing
PrespaWDiDg
Total
Grass amount
roo
100
100
100
900
100
400
500
480
400
144
400
~O
EXlo
308
I
I
YTI Feeding
Ylli Feeding
IX FeediDg
8
51:3
I
X
97rJ7
5910
23400
Total
lli
~496
13
Polar cod
Immature
Immature
Immature
IY
Y
1654
947
2601
3509
679
2601
6789
36392
1017
3096
4II3
!~~r
FeediDg
1!I
7
2II
Y
TI
6
SpaWDing
2
PrespaWDiDg 8
·SpaWDing
Feeding
Y
Total
rr
8
8
Gross amount
XI1
I
9
Grass amount
I
ill
rr
11
Grass amount
yn b,c
5
FeediDg
FeediDg
2
3
2
7
.,.4
986
365
735
2086
1295
438
I733
4068
m3
II:38
6079
3143
5
5917
819
9m9
13
19777
.L
100
100
200
150
150
500
400
100
500
lIOO
9
- 47 -
I
2
3
TI
1
Total
TIb
III
Total
4
Feeding
FeediIlg
YI
Feeding
Feeding
Feeding
YTI
IX
Illi
IY
!
Gross amount
TI
TI a
lli
YI
yn
PrespswniIlg
5
1
I
II78
I
I
284
879
1562
2725
J23
4226
3
5
Presp~ ,postsp~
PostspawniIlg
Postspawning
IX
Total
Grass amount
Ha
b1
rr
rr
m
11
Prespawning
YI
YI!!
Presp~,postsp~
IX
Postspawning
PostspawniIlg
Total
Gross amount
PostspawniIlg 1
lb2
TI
1I
Prespswning
In
I
III
n YI PostspswniIlg
Gross amount
CapeliIl
I
...T
I
n
III
Total
TI
Total
VIII d,e II
II
IY
1
YI
V
VI
-
7
155
1023
6
Mackerel
Presp~,postsp~ I
ll1l
6
9819
8218
33348
4877
66443
76262
8
9
100
100
IOD
149
100
3 /19
449
1'50
53
150
303
453
60 1+
3297
527
987
1514
48II
100
280
1271
1551
Prespawning 9
Prespawning 8
SpawniDg
6
23
FeediDg
FeediIlg
6
FeediIlg
7
13
306::9
231336
8599
63094
420
3213
4677
8310
600
630
1230
Prespawning I
Postsp.presp.4
2272
5434
200
900
800
600
2300
50
- 48 -
I
I
2
III
:3
4
Ylli
IX
Feeding
Feeding
Feeding
yn
5
2
J
J
8
Total
IY
Total
X Feeding
XI Feeding
xn
4
:3
Feeding
7
51
Gross amount
ITa
I
T Prespawning
TI Prespawning
l!J Spawning
Gross amount
I
I Prespawning
YIT Feeding
ym Feeding
lli
IX Feeding
Total
ITb
X Feeding
XI Feeding
IY
Feeding
Total
Gross amount
xn
I
3
2
6
I
6
n
:;:8
6
3
4
13
3I
Herring
I
rr
I Immature
lY Immature
y Immature
YI Immature
I
Total
lla
Gross amount
I
III Spawn. ,postsp~
rr
IY Spawn;,postsp.
y Postspawn1ng
Total
Gross amount
6
7
1605
24442
198f5
45932
8725
15624
8281
32630
149956
6659
D578
3163
2'3400
590
739
12132
45972
58843
42'336
22643
21293
86272
145705
8
238
310
'~OO
848
400
300
700
5078
100
300
200
600
100
550
1050
1700
600
300
400
DOO
3000
4349
1267
1619
1850
4736
J}
16742
445
369
94
363
908
350
9