C.M. 1986/H:l
Report of Activities
International Council for the
Exploration of the Sea
PELAGIC FISH COMMITTEE
by
R. S. Bailey
1985
BELGIUM
(R. De Clerckl
No market sampling of pelagic fish was carried out in 1985. Research
vessel surveys for juvenile herring and sprat were continued. using
bottom trawl, as given in the table below.
to density and length measurementsl.
(The research was limited
Research vessel catches
Area
Season
Objectives
IV c
April and
September
Recording densities of
immature herring and
sprat
Belgian coast
CANADA
No report received.
DENMARK'
No report received.
FINLAND
(R. Parmanne & V.
S~öbloml
No work carried out on pelagic fish other than that reported to the Baltic
Fish Committee.
- 2 -
FRANCE
(A, Maucorps)
[SPECE: CHINCHARD
trachurus trachurus
echantillonnage:
secteur
periode
type de
poisson
lYc
Sud "er
du Nord
4
Adultes
3
-
409
·
.
4
Adultes
5
-
590
-
-
2
Juv!niles
Adultes
32
21
-
12908
2704
·
·
--
YlId
"anche est
VIII
Golfe de
Gaseogne
Ho d'echantillons No de poissons No de poissons No de poissons
ag!s
lesur!s
aux criteres
bateau de march!
raciaux exalin!s
recherche
ealpagnes de bateau de recherche:
Seeteur
VIII - Golfe de Gascogne
IV c et VII d
Manche est et
sud de la "er du Nord
Date
Objectifs
19 avril - 20 lai
- Evaluation acoustique des
stocks de petits pelagiques
- Methodologie de I' haluation
5 au 26 novelbre
- Evaluation aeoustique du
stoek de hareng des Downs
• Methodologie de I'evaluation
- Etude du cOlportelent
- 3 -
ESPECE: SPRAY
Sprattus sprattus
echant iIlonnage:
secteur
periode
type de
poisson
IVc
Sud Her
du Nord
4
Adultes
2
4
Adultes
1
-
2
Adultes
2
-
V1Id
Manche est
No d'echantillons No de poissons No de poissons No de poissons
ages
aUl criUres
.esures
bateau de larche
radaUl exalines
recherche
VIII
Golfe de
Gascogne
-
95
-
120
-
-
194
-
calpagnes de bateau de recherche:
Secteur
VIII • Golfe de Gascogne
IV c et VII d
Manche est et
sud de la Mer du Nord
Date
Objectifs
19 avril - 20 lai
• Evaluation acoustique des
stocks de petits pelagiques
- Methodologie de l'evaluation
5 au 26 novelbre
- Evaluation acoustique du
stock de hareng des Downs
• Methodologie de l'evaluation
- Etude du cOlportelent
- 4 -
ESPEeE: HARm
Clupea harengus
fchantillonnage:
secteur
periode
type de
poisson
No d'echantillons No de poissons No de poissons No de poissons
Desures
ageS
aUI crit!res
radaul ualines
bateau de larcM
recherche
·
IV a ouest
Nord-ouest
Ner du lord
1
2
4
Juveniles
Adultes
Adultes
·
·
2
1
139
537
257
118
127
75
IYb
Sud Buchan
1
Juveniles
1
·
158
-
IV b
Centre
Ner du Nord
1
2
3
4
Juveniles
Adultes
Adultes
Adultes
3
-
-
1
3
1
517
251
779
239
120
82
182
61
IVc
1
1
3
4
4
Adultes
Adultes
Adultes
Ceniteurs
Ceniteurs
2
·
1
2
331
209
326
2
577
498
95
79
118
143
137
4
4
Ceniteurs
Ciniteurs
2056
1363
280
272
sud
Ner du lord
YIId
ouest
Nanche
1
·
·
·
·
2
·
·
8
·
-
4
··
-
·
--
·
-
·
-
·
-
ESPECE: HARENC
Clupea harengus
ca.pagnes de bateau de recherche:
Sl'chur
IV a,b,c
.
Mer du lord
IYcetVIld
Nanche est et
sud de la Ner du Nord
Date
28 janvier - 22 fivrier
5 au 26 novesbre
Objectifs
- Evaluation de I' abondance
des juveniles
• Evaluation acoustique du
stock de hareng des Downs
- Methodologie de I'evaluation
- Etude du co.portnent
- 5 -
ESPECE: MAQUEREAU COMMUN
SCOilber scolbrus
echantillonnage:
Xo d'echantillons Mo de poissons Mo de poissons No de poissons
ages
aBl criteres
lesures
raciaul exalines
bateau de marche
recherche
secteor
periode
type de
poisson
IVc
Sud Mer
du Mord
4
Adultes
3
·
308
·
·
4
Adultes
6
·
1080
·
·
2
Adultes
22
·
·
·
VIId
Manche est
VIII
Golfe de
Gascogne
5123
campagnes de bateau de recherche:
Secteur
VIII • Golfe de Gascogne
IVcetVlId
Manche est et
sud de la Mer du Mord
Date
Objectifs
19 avril • 20 lai
• Evaluation acoustique des
stocks de petits pelagiques
• Methodologie de !'evaluation
5 au 26 noveobre
• Evaluation acoustique du
stock de hareJ18 des Downs
• Methodologie de l'evaluation
• Etude du cOlportelent
- 6 -
ESPECE: ANCHOIS
Engraulis encrasicolus
echantillonnage:
secteur
periode
type de
poisson
VIII
Golfe de
Gascogne
2
Adultes
No d'echantillons 10 de poissons 10 de poissons 10 de poissons
lesures
ages
aU! criteres
bateau de larche
radaU! naaines
recherche
J
-
701
.
-
calpagne de bateau de recherche:
Secteur
VIII - Golfe de Cascogne
Date
Objectifs
19 avril • 20 lai
• Evaluation acoustique des
stocks de petits pelagiques
• KHhodologie de I' haluation
ESPECE: SARDINE
Sardina pilchardus
echantillonnage:
seeteur
periode
type de
poisson
VIII
Golfe de
Cascogne
2
Adultes
No d'echantillons No de poissons No de poissons No de poissons
lesures
ages
aU! criteres
bateau de .arche
radaU! naaines
recherche
13
-
1551
.
.
ca.pag•• d. bat.au de rocherche:
Secteur
VIII - Colfe de Cascogne
Oate
Objectifs
19 avril • 20 lai
• Evaluation acoustique des
stocks de petits pelagiques
• Kethodologie de l'evaluation
- 7-
ESPECE: MERLAN BLEU
Nicrolesistius poutassou
echantillonnage:
secteur
periode
type de
poisson
No d'echantillons No de poissons No de poissons No de poissons
aUl criHres
lesures
aBeS
bateau de larche
radaUl eXalines
recherche
VIII
Golfe de
Gascogne
2
Adultes
24
.
6570
.
.
calpagne de bateau de recherche:
~
Secteur
VIII • Golfe de GasCOBne
Date
Objectifs
19 avril • 20 lai
• Evaluation acoustique des
stocks de petits pelaBiques
• ftethodoloBie de l'evaluation
- 8 -
GERMAN DEMOCRATIC REPUBLIC
(L. Danke)
Species Blue whiting
Sampling
~rea
No. of fish
No. of samo1es
Quarter Research vessel Commercial vessel t·leasured IAged
fJb 1
I
!v'IIb,c
f,lII g, h. j ,k
XII
Vb 1
I
Vb
II
2
I
I
II
IVa w
II
IIa w
II
IIa
III
-
4
1034
282
-
5
5
11
7
2278
1000
2979
1914
154
421
220
1
313
100
5
1301
91
3
710
18
7975
-
-
442
- Cl -
-~j
FEDERAL REPUBLIC OF GERMANY
(D. SAllRIIAGE/H. DORNHElM)
Sampling
Type
Quarter of
Fish
Area
Hebrides
(Ol)
Wof Shet1and
NW-North Sea
(02)
(03)
NE-North Sea
(04)
NW of Ireland
(06)
South Buchan
(08)
Centra1 North
Sea
(09)
W of Ireland
Species HERRING
aged
14
19850
494
22
12
33
25
4505
2083
4214
3642
5
3
9
22
13
21
50
372
14
9529
6150
2236
1071
5822
493
3156
4443
381
389
200
470
299
200
ad.+juv.
ad.+juv.
IIr ad.+juv.
IV ad.+juv.
33
22
19
11
37
II
II
II!
S of Ireland
(13)
Bristol Channel(14)
West Channe1
(15)
Western Approaches
(16)
measured
adult
II
adult
adult
adult
ad.+juv.
I! ad.+juv.
II
adults
II
II
Remark: No herring examined racial1y
37
No of Fish
III
adult
III !!.!h+juv.
I ad.+juv.
II! !!.!h+juv.
I .!!§.!..+juv.
II! ad.+juv.
II ad.+juv.
II!
adult
I
juv.
IIr ad.+juv.
I
(10)
No of Samples
Research Commercial
Vessel
3
3
2
3
2
1
4
19
888
108
15
199
690
200
184
700
288
98
100
84
- 10 Research Vesse1 Surveys
Area
Date
Objectives
Centra1 North Sea
(09)
03.01. - 16.01.86
22.01. - 27.01.86
22.02. - 01.03.86
Groundfish survey
NW-North Sea
(03)
(04)
(08)
(09)
(01)
04.02. - 07.03.86
leES young fish survey
22.03. - 13.04.86
16.04. - 11.05.86
Groundfish survey
NE-North Sea
South Buchan
Centra1 North Sea
Hebrides
Hebrides
(Ol)
NW of Ireland
(06)
W of Ireland
(10)
S of Ireland
(13)
Bristol Channe1
West Channe1
(14)
(16)
W of Shet1and
NW of Ireland
South Euchan
(02)
(03)
(04)
(08)
(09)
(01)
(02)
(06)
(08)
W of Ireland
(10)
Centra1 North Sea
(09)
Hebrides
W of Shetland
fish survey
( 15)
Western Approaches
NE-North Sea
South Buchan
Central ;;orth Sea
Mackere1 and other pe1agic
10.07. - 08.08.86
Groundfish survey
13.09. - 29.09.86
Pe1agic fish survey
18.11. - 29.11.86
Groundfish survey
- 11 -
Species SPRAT
Sampling
Area
No of sampies
No of fish
Research Commercial
measured
Quarter
N- North Sea
IVa
Central North Sea
I
12
886
III
IVb
I
II
III
IV
6
45
22
17
15
1
2
3
2
67
3249
1509
1010
1037
NW of Scotland
VIa III
English Channel VIId,e
II
Bristol Channel VIIf
II
S of Ireland
VIIg-k
II
33
15
3
7
143
429
23
Research Vessel Surveys
Area
l
~
I
Central North Sea
IVb
N- North Sea
Central North Sea
Central North Sea
Central North Sea
NW of Scotland
Wof Ireland
English Channel
Bristol Channel
S of Ireland
Bay of Biscay
IVa
IVb
IVb
IVb
VIa
VIIb,c
VIId,e
VIIf
VIIg-k
VIII
Central North Sea
N- North Sea
Central North Sea
IVb
IVa
IVb
Date
Objectives
03.01. - 16.01.85
22.01. - 27.01.85
04.02. - 07.03.85
Groundfish survey
Groundfish survey
ICES young fish survey
22.02. - 01.03.85
16.04. - 18.04.85
16.04. - 11.05.85
Groundfish survey
Wadden Sea survey
Mackerel and other pelagic
fish survey
08.05. - 09.05.85
10.07. - 08.08.85
Wadden Sea survey
Groundfish survey
- 12 -
N- North Sea
Central North Sea
NW of Scotland
W of Ireland
S of Ireland
Central North Sea
IVa
IVb
VIa
VIIb.c
VIIg-k
IVb
14.09. - 29.09.85
Pelagic fish survey
01.10. - 02.10.85
15.10. - 18.10.85
18.11. - 29.11.85
Wad den sea survey
Wad den sea survey
Groundfish survey
Species
Sampling
Area
N-North Sea
Centra1 North Sea
NW of Scotland
W of Ireland
English Channe1
Bristol Channel
S of Ireland
Bay of Biscay
Quarter
Type
of
fish
I
III
IVb III
VIa II
adult
adult
ad.+juv.
ad.+juv.
III
VIIb,c II
III
VIId,e II
VIIf
II
VIIg-k II
III
VIII
II
juv.
.!!!L..+juv.
ad.+juv.
adult
IVa
.!!!L..+juv.
adult
ad.+juv.
adult
No of sampies
Research Commercia1
Vesse1
1
21
37
26
41
19
3
6
3
22
10
20
4
MACKEREL
No of fish
measured
117
310
1210
5371
1637
18848
50
6644
1125
13371
147
7215
aged
97
98
349
224
50
221
98
99
389
583
- 11 -
Research Vessel Surveys
Date
Area
N-North Sea
NW of Scotland
N\, of Scotland
Wof Ireland
English Channel
Bristol Channel
S of Ireland
Bay of Biscay
N-North Sea
Central North Sea
N-North Sea
Central North Sea
NW of Scotland
Wof Ireland
S of Ireland
IVa
VIa
VIa
VIIb,c
VIId,e
VIIf
VIIg-k
VIII
IVa
IVb
IVa
IVb
VIa
VIIb.c
VIIg-k
Objectives
22.03. - 13.04.85
Groundfish survey
16.04. - 11.05.85
Mackere1 and other pe1agic
fish survey
10.07. - 08.08.85
Groundfish survey
13.09. - 29.09.85
Pelagic fish survey
Species BLUE WHITING
Sampling
Area
Norwegian Sea IIa
Spitzbergen, Bear
Ireland IIb
N-North Sea IVa
NW of Scotland VIa
Rockall Bank VIb
Wof Ireland VIIb,c
S of Ireland VIIg-k
Type
Quarter of
fish
III
III
III
II
III
II
II
III
II
III
Bay of Biscay VIIIa,b
SE-Greenland XIVb
II
IV
No of sampIes
Research vesse1
mixed
2
adult
11
mixed
mixed,spawners
mixed
mixed,spawners
mixed,spawners
mixed
mixed
mixed
mixed
mixed
No of fish
examined
measured aged racially
100
1902
100
100
100
100
9
14
16
8
3
2
1
483
5595
1321
1354
1773
6
150
50
150
SO
SO
SO
SO
SO
SO
8
1022
4
55
200
2257
200
100
200
100
SO
50
Research Vesse1 Surveys
Aren
N-North Sea
Wof Scot1and
Rockall Bank
Wof Ireland
NW of Scot1and
Wof Ireland
English Channe1
Bristo1 Channe1
S of Ireland
Bay of Biseay
N-North Sea
Central North Sea
NW of Seot1and
Wof Ireland
S of Ireland
SE-Green1and
Date
IVa
Objectives
22.03. - 13.04.86
Groundfish survey
16.04. - 11.05.86
Mackerei and other pe1agic
fish survey
10.07. - 08.08.86
Groundfish survey
13.09. - 29.09.86
Pe1agie fish survey
25.09. - 03.11.86
Cod and redfish survey
VIa
VIb
VIIb,c
VIA
VIIb,e
VII:i,e
VIIf
VIIg-k
VIII
IVa
IVb
VIa
VIIb,e
VIIg-k
XIVb
~
- 15 -
Sampling
Species BORSE MAGKEREL
Quarter
Area
Sound and Belt Sea IIIb,c
IVa
N-North Sea
IV
I
III
Gentral North Sea IVb
NW of Scotland
VIa
III
II
III
Wof Ireland
VIIb,c
II
III
English Ghannel
VIId,e
Bristol Ghannel
S of Ireland
VIIf
VIIg-k
Bay of Biscay
VIII
II
II
II
III
II
Type
of
fish
No of sampies
No of fish
Research vessel
measured
aged
1nvestigated
rac1ally
4
7
11
38
13
47
21
4
6
719
8
158
1665
2401
250
SO
8815
3992
635
2937
SO
250
SO
550
200
50
ISO
ISO
50
550
200
50
150
2
36
8
25
3
21636
2253
12542
a11 .
"
"
"
600
200
550
SO
600
200
550
Research Vessel Surveys
Date
Aren
N-North Sea
Gentral North Sea
NW of Scotland
Wof Ireland
English Ghannel
Bristol Ghannel
S of Ireland
Bay of B1scay
N-North Sea
Objectives
IVa
IVb
04.02. - 07.03.85
IGES young f1sh survey
VIa
VIIb,c
VIId,e
VIIf
16.04. - 11.05.85
Mackerel and other pelagic
fish survey
10.07. - 08.08.85
Groundfish survey
13.09. - 29.09.85
Pelagic fish survey
VIIg-k
VIII
IVa
Central North Sea
NW of Scotland
Wof Ireland
IVb
S of Ireland
Sound and Belt Sea
VIIg-k
IIIb,c
VIa
VIIb,c
11./12.85
Groundfish survey
ICELAND
(Jakob Jakobsson)
Sa~pling
BLUE WHITING
No. of sampIes
Area
Season
Type of fish
Res. vessels
Fish.vessels
Measured
No. of fish
Aged
Exam. racially
SW, SE Ieeland
Feb.-Mar.
Mixed
89
SE Ieeland
.lun.
Immature
2
129
129
Icelandic waters,
Aug.
Immature
7
409
409
Mixed
17
2656
3026
Dohrn Bank
Reykjanes Ridge
Sep.-Oct.
Research vessel surveys
Area
SE IcelanJ, SW
Norwegian Sea
Date
3.6. - 13.6.
Objective
Abundance estimates, environmental
conditions.
W, ~w, N Ieeland
E-Grcenland, Dohrn Bank
6.8. - 28.8.
Abundance estimates
S, SE, E, NE Ieeland
7.8. - 27.8.
Abundance estimates
-~----------------------------------------
sampling
CAPELIN
No. of samples
Type of fish
Res. vessels
No. of fish
Fish.vessels
Measured
Aged
Area
Season
W, N, NE Ieeland
Jan.-Apr.
Mixed
12
11
2565
E, 5, SW Ieeland
Jan.-Apr.
Adult
7
16
2373
2300
Ieeland, Greenland,
Aug.
Mixed
31
2668
2668
Aug.-Dec.
Mixed
24
6009
6009
Exam .. röci.ally
2195
Jan Mayen
- "
-
39
Research vessel surveys
Area
Date
Objective
W. NW, N, NE, E,
SE Ieeland
E. N, NW Ieeland
13.1. - 8.2.
Abundance estimates
28.1. - 8.2.
Abundance estimates
SE Ieeland
14.2. - 28.2.
W,
N leeland
6.8. - 28.8.
'5, SE, E, NE, N Ieeland
7.8. - 27.8.
!'-;~,
Abundance estimates
Q-group capelin and other sp. l-group
capelin abunuance estimates.
O-group capelin and other sp. l-group
capelin abunuance estimates.
NW, N, NE, E Ieeland
'NW, N, NE Ieeland,
E-Grcenland
NW, N, rJE, E Iceland
8.10. - 1.11.
Abundance estimates
15.10. - 1.11.
Abundance estimates
11.11. - 26.11.
Capelin survey
~
-J
Sa~pling
HERRING
No. of sampies
Are.=t
Season
NE, E, SE, SW, NW
Jan.-Aug.
Mixed
sep.-Dec. 1 )
Mixed
Ioeland
N, {\;E, E, NW
Ieeland
NW, N, E
Nov.-Dec.
Ice1and
1)
T
e of fish
Res. vessels
No. of fish
Fish.vessels
Measured
10
25
Juvenile/mixed
8
A ed
Exam. raciall
1282
1282
1282
2289
2189
2189
2836
2836
2836
Fishing season
Resparch vessel surveys
Area
Date
S, E Ieeland
E,
~,
r;w
Ieeland
7.1.-22.1.
18.11.-9.12.
Objective
Abundance estimates
Abundance estimates T.S. measurements.
::0
I
- 19 -
IRELAND
(J. Molloy)
Type of
fish
No. of
samples
No. of fish
measured
No. of fish
aged
No. of
fish
examined
racially
Species lIerring
Div. VIa I IV
N0rth'l/est V, VI,
12
2765
496
20
5220
974
974
.\d:.tl t
6
833
300
300
I\dult
26
4654
1123
1123
14
3987
450
Adult
496
XI[
Div. VII
b-c ;Iest
Ir, IV,
V, IX,
X, XI,
XII
Div. VII
South
'Irr,
j
X,
\~est
1
Div.
'Irr"
C~l~i~
s""
IX,
XI,
VII,
IX,
x, Xll,
1 ,11
Div. Vlla 11, VII,VllI Adult
Irish Sea IX, XI
450
- -;l,------------- - - - - . - - - --·-------------;:"sp-e-c"7
i -es-:--:-:-';a-.c"7k-e re
------_._-----_.
Adult
22
3760
868
Div. '111::> 11,1X
West
Adult
4
731
69
Div. V11j 11,111,
South
Wüst
Adult
10
1925
717
Div. VIa
T>lort11
\'le5t
1 ,11 ,
111, IV,
X,Xl,Xl1
Species:
Sprat
Div. VIIg X,Xl,Xll
Celtic
Sea
Adult
30
5744
Div '111 j
Adult
2
619
Xl
- 20 -
Research Vessel Surveys, 1985
Area
Time
VIa, Vllb
North west
and West
Objective
October to November
Larval surveys to obtain
estimate of abundance of
herring population.
VIIa
Irish Sea
January to February
Young herring surveys
VIa, VlIb
November
Young mackerel survey
VIIb
June, July, August
Sandeel Survey
NETHERLANDS
(A. Corten)
Sampling data for Herrlng.
Area
Quarter
of year
Type
of flsh
No. of Samples
research
No. of flsh
market measured aged
vessel
NW North Sea
South Buchan
Central North Sea
Southern North Sea
VIa North
VIa South + VIIb,c
+
+
West ehannel
Total
2
3
2
3
2
3
1
2
3
4
2
3
4
2
3
4
1
adult
6
25
4
4
1
23
34
2
1
23
3
8
3
2
10
5
1
155
760
3,594
697
741
373
2,990
6,191
338
153
4,250
414
1,026
498
335
1,183
752
137
150
625
100
100
25
575
850
50
25
575
75
200
75
50
250
125
25
24,432 3,875
examlned
raclally
1
1
1
- 21 Samp1ing data for Mackere1
Quarter
of year
Area
Type
of fish
No. of Sampies
research
vessel
IVa Northern North Sea 3
4
IVb Central North Sea 2
3
4
IVc Southern North Sea 2
3
4
1
IVa NW Ireland
2
3
4
VII South of Ireland
1
2
4
East
coast
USA
juv.
adults
2
Total
market measured aged
2
5
2
5
7
6
26
15
23
1
234
40
96
300
54
189
488
152
237
473
930
1,874
1,063
1,480
244
25
25
25
25
25
50
125
50
125
175
150
650
375
625
75
10
747
250
1
1
1
4
2
2
5
No. of flsh
99
examined
racially
8,601 2,775
Sampling data for Horsemackerel
Area
Quarter
of year
Type
of fish
No. of sampies
research
vessel
IVb Central North Sea
2
3
4
IVc Southern North Sea 3
4
1
VIa NW Ire land
2
3
4
1
VII South of Ireland
2
3
4
Total
adult
No. of fish
market measured aged
25
50
25
50
25
50
25
175
200
150
375
50
275
1
2
1
2
1
2
1
7
8
6
14
2
11
58
259
47
162
74
111
154
1,001
1,386
819
2,256
274
2,557
58
9,158 1,475
examined
raciallY
- 22 -
Herring!Research vessel surveys
Area
Dates
IVa,b,c North Sea
lVa Northern North Sea
lVa Northern North Sea
lVb Central North Sea
IVe+Vlld Southern Sea
lVe Duteh Waddensea
22
2
3
9
18
4 feb junesep sep
dee feb -
Objectives
2 march
19 july
28 sep
12 sep
21 dee
20 apr
lCES Young Fish Survey
Tagging + reeapture
lCES Herring larval survey
lCES Herring larval survey
lCES Herring larval survey
Herring larval survey
Maekerel!Researeh vessel surveys
Area
Dates
Objeetives
VII Celtie Sea
Vll Celtie Sea
6 may - 25 may
11 nov - 30 nov
environmental egg studies
o group survey
- 23 NORWAY
(0. Dahl & I. R$ttingen)
Herring (Clupea Haren9us)
Sampling
Area
Quarter
Type
of
fish
No .of
fish
Research
vessel
Market
measured
No.of
fish
aged
No.of
fish
exam.
racially
Skagerrak
lila
I
11
IJI
IV
Mixed
Mult
Mult
Mixed
12
IV
Mixed
Adult
Mixed
Mixed
11
Norwegian
coast IV.
IJ
IV
Adult
Immat.
Contra!
NOl'th Sea
IVb
I
Immat.
11
Mult
Mixed
Northern
North Se.
IVa
NW North
Sea
I
11
111
III
IV
IJI
IV
Immat.
11
5
1
12
1
5
11
3
195
500
1002
1415
195
500
800
1375
100
500
800
1315
94
394
33
9
8388
32109
4146
1241
1381
1381
153G
H6
1259
981
300
299
300
299
300
299
1899
2255
14329
6514
300
90
985
1354
300
900
1354
560
503
291
100
291
100
21
21
142
51
Adult
Adult
HG
Via
Research vessel survey
Area
North Se.
Sea'ion
Jan/Feb
Objechves
Int.Young Fish survey.
herring
North Sea
March
Herring acoustic survey
NW Narth Sea
July
Narth Sea herring acaustic
Skagerrak. along
t.he Norw.
toast
Oct/Nov/Oec
survey
narth ta Varangerfjord
Fish survey, O-group
sprat/harring
------------------------------
- 24 -
Mackerel
Sampling
l~
scombrus)
No.of
fish
aged
Type
of
fish
111
MiKed
700
700
Skagerrak
lIla
II
111
IV
MiKed
Immat.
Immat.
100
50
68
100
50
68
Northern
North Sea
IVa
I
11
III
IV
Immat.
Mi.ed
HiMed
MiKed
68
287
1187
1054
68
240
1187
1054
Central
North Sea
IVb
II
III
HiMed.
Hiud
375
100
375
100
NW North
Sea. VIa
IV
MiKed
400
400
SW Ireland
VlIg-k
II
Mi.ed
596
596
Norwegian
Sea. IIa
No. of samples
Research
vessel
Harket
No.of
fish
measured
Quarter
"rea
3
9
1
5
H
5
------_.
Resuarch vessel survey
Season
Objectives
North Sea
Jun-Jul
North
Oot
Egg and larval survey.
mackerel
Fish survey. I-group
mackerel
"rea
Se./Skagerrak
Tagging
Saason
Type
of tag
SW Ireland.
VlIg-k
Hay
Int.
North Sea
Skagerrak.
IVa.b. lIla
Jul/"ug
Int. steel
Area
steel
No.
tagged
Type of
fish
25
Mackerel
069
20 273
Hackerel
L
- 25 Sprat (Sprittus
Sampling
~I
-----------_._---Area
Norwegian
toast
Type
QClarter of
fish
IV
Hixed
IV
Adult
No.of samples
Research
vessel
Harket
No.of
fish
measured
12
No.of
fish
aged
976
300
3000
100
182
180
IVa
Northern
North Sea
IVa
Central
North Sea
'Vb
30
Adult
Research vessel surveys
Area
Season
Objectives
North Sea
Jan/Feb
Int. Young Fish Survey.
sprat
Skagerrak - along
Oct/Nov/Oec
Fish survey. O-group,
the Norw. coast
north to Va ranger-
fjord
sprat/herring
- 26 Herring l~ harenqus) North of 62~N
Sampling
Area
Ouarter
Barents Sea
Finnm.coast
I
Type
of
fish
No. of sampIes
Research
vessels Harket
Juv.
II
III
IV
Norw. coast
lJa
Northern Norw.
Sea Ilb
I
Il
III
IV
Hixed
III
IV
Juv.
Total
20
52
10
0
44
0
28
16
20
46
54
13
2
No. of
fish
measured
0
0
241
No. of
fish
aged
1137
4656
878
2896
169
1222
169
1036
24
6571
6635
1183
5833
2916
1695
131
2980
0
0
304
30
D
153
30123
10318
No. of
fish
exam.rac.
0
Research vessel surveys
Objectives
Date
Alu
Norwegian coast Ila
Experimental fishing. acoustic
February-Harch
survey of spawning stock
April-Hay
Togging
Norwegian Sea Ila
June
Post larvae distribution
Norwegian Seal
Barents Sea Ila/I
August
O-group distribution
Barents Sea Ila/l
September
Acoustic survey
November
Norwegiln coast 1/111
Area
Horw. coast
Ila
November-Oecember
Quarter Type of tags
Il
internal
O-group survey
No. tagg.
Type of fish
38978
adult
Recoveries
- 27 -
Capelin (Mal lotus villosusl
Suplinq
Type
Quarter of
fish
Area
Barents Sea
I - IIa - IIb
Jan Mayen
IIa
I - IV
III
Total
Mixed
No. of samples
Research
vessels Market
No. of
fish
measured
No. of
fish
aged
190
85
27 500
24 750
16
7
2 300
2 070
206
92
29 800
26 820
No. of
fish
exam.rac.
Research vessel suryeys
Area
Date
Barents Sea 04.01-31.01
Objectives
Monitoring and samling in spawning migration.
Barents Sea
15.04-16.05
Studies of la te spawners.
Barents Sea
18.05-22.06
Acoustic measurement of young capelin.
Barents Sea
26.05-21.06
Abundance and distribution of capelin larvae.
Norw. Sea
29.07-19.08
Abundance and distribution of capelin stock.
Barents Sea
06.09-09.10 Abundance and distribution of capelin stock.
Barents Sea
09.10-20.10
Improve methods of bioacoustic surveys.
- 28 -
8lue whiting IHicromesistius pohssou)
Sampling
Area
Quarter
8arents Sea
Norwegian
Sea
I1a
IV
Type
No. of sampies
No. of
No. of
of
Research
fish
fish
fish
fish
vessels
measured
aged
e)(am.raCe
100
100
Market
Mixed
I
3
306
135
II
20
2110
652
III
51
3215
2512
No. of
Northern
North Se.
IVa
11
511
20
132
8619
298
III
53
3396
410
IV
44
2398
129
131
8938
924
141
9611
388 .
11
3
West of the
8ritish I sles.
Faroes
Vb. Via. VIb.
11
III
IV
344
249
39194
5811
VlIb.c.g.h.
i.k
Total
86
511
Research vessel surveys
Area
Norwegi_n Sea IIa
Northern North Se_ IV_
D_te
15 Aug - 5 Sept
Objectives
Acoustic assessment _nd
structure of stock
- 2) -
Great silver smelt t Argentina silus I
Sampling
Area
Quarter
Norwegian Coast
I
Type
No. of samples
No. of
No. of
of
Research
fish
fish
fish
fish
vessels
measured
aged
eKam.rac.
Adults
11
19
111
.3
lIa
Harket
12
438
253
2274
1186
286
198
280
98
3218
1135
No. of
Northern
North Sea
IVa
11
25
Total
18
Research vessel syrveys
Area
Norwegian Coast Ila
Northern North Sea IVa
Date
9-28 April
Objectives
Acoustic survey. structure
of stock and catchability
- 30 -
Polar cod (8oreogadus Saida)
Sampling
Area
9arents Sea 1
Quarter
11
Type
No. of sampies
No. of
No. of
of
Research
fish
fish
fish
fish
vessels
measured
aged
exam.rac.
100
Hi.ed
10
111
111
IV
Harket
No. of
O-group
1049
420
92
H"ed
Northern
Norwegian Sea
IIb
Total
111
O-group
37
894
58
2555
PORTUGAL.
(1. Barraea)
The mosl important pelagie speeies and, therefore, those that have
been studied during 1985 by the Instituto Naeional de Investigaclo
das Peseds, were the following: sardine, horse mackerei, mackerei,
RpaniRh mackerel and blue whiting.
The following tables include the da ta provided by the Biological
SRmpling Programme, those obtained from sampling in the laboratory
and those obtained from research surveys.
r
Species - Sardina pilchardus (Walb.)
SAMPLING
Area
IXa
Season
Type cf
Fish
No of sarnp1es
Research
Vessel Market
No cf Fish
measured
No cf Fish aged
No of F!sh
scales
otoliths eXaITI1ne
racia11y
1rst quarter
-
11
1 361
300
596
nd quarter
2
rd
3
quarter
-
12
1 425
102
363
5 913
177
1421
All
24
15
4th quarter
23
11
5 691
173
1 107
TOfAL
47
49
14 390
752
3 487"
-
*The otoliths havenot yet a11 been read •
I
....
W
RESEARQJ VESSEL SURVEYS
-Area
" Objective
Date
6-19 August
To study the spatia1 distribution and to estimate
the abundance in number and biornass by age
1ength groups of
IX a
20 August-3 September
~
and
Ibero-Atlantic sardine stock
in the area adjaccnt to the Portuguese coast.
5:tlKUes of planktonie cyc1es and sardine food
available.
Studies of the sardine spawning pericds and areas.
Species - Sardina pilchardus (Walb.)
RESEARQl VESSELS SlJR\IEYS (cont.)
-----"
_... Area
Date
--
Object1ve
-22 November - 5 December
IX a
Studies of l'lanktonic cycles and sardine food
available.
Studies of the sardine spawning periods and areas.
w
6 - 20 December
To study the spatial distribution and to estimate
the abundance in nurnber and biomass by age and
len~th groups of the Ibero-Atlantic sardine stock
in the area adjacent to the Portuguese coast.
'"
- " ".- - - - - - -
Species - Trachurus trachurus L.
SAMPLING
Area
lXa
Seasoo
Type of
Fish
No of samoles
Research
Vessel Market
No of Fish
measured
No of Fish aged
(otoliths)
No of Fish
examined
raciallv
lrst quarter
-
256
22 198
229
2nd quarter
rd quarter
3
4th auarter
TOTAL
66
307
29 090
96
-
299
29 952
95
-
260
680
-
All
68
134
..
-_.- _ _-
22 121
245
103
361___ c - .
1107
__._ _ _
~ _ ~
I
RESEARCH VESSEL SURVEYS
Area
W
W
Date
lXa
(Portuguese coast)
1-29 June
lXa
(Portuguese coast)
22 Oct.-19 Nov.
Objective
Estimatioo of biomass indices by stratified bottom trawl
surveys.
Estimatioo of hake and horse-mackere1 recruitment indices by
bottorn trawl surveys.
L
Species - Scomber scombrus L.
SAMPLING
Area
IXa
Season
1rst quarter
2nd quarter
3 rd quarter
4th
Type of No of samp1es
No of Fish No of Fish aged
Research
Fish
(otoliths)
Vesse1
Market measured
All
quarter
TOTAL
-
203
14 270
110
26
204
14 269
50
-
194
12 411
36
47
179
15 985
315
73
780
53 429
511
No of Fish
examined
racia11y
..... --
--.,--_.----
Species - Scomber japonicus Houttuyn
SAMPLING
..
Area
IXa
Season
1 rst quarter
2nd quarter
3rd quarter
4th
TOTAL
quarter
Type of
Fish
All
No of samp1es No of Fish No of Fish aged
Research
(oto1iths)
Market measured
Vessel
No of F!sh
g~T~Yh
-
44
2 121
64
7
86
5 817
189
4
70
43
3 793
2 480
20
134
-
11
243
14 211
·407
-
SAMPLING
Species - Micromesistius poutassou (Risso)
i
Area
T;~ .:~ rN~ of-~~les
Season
Fish
-
lrst quarter
DCa
2nd quarter
rd
3
quarter
All
4th quarter
TOTAL
Vessel
,
Market
-
'.
__
.- ---_ _..
No of Fish No of Fish aged
~~~fn~äs~
measured
(otoliths)___ _!.!1cia11y"._ _ _ _
138
10 547
218
43
127
12 264·
145
-
52
116
11 113
222
-
38
102
11 203
145
133
483
45 127
730 *
-
* The oto1iths were not yet all observed
w
en
RESEARQI VESSEL SURVEYS
Area
IX
Date
23 - 31 July
Objectives
Blue whiting distribution at the slope and the edge.of the
Continental Shelf on the Portuguese south coast.
Other Activities
The main changes in sardine stored in ice have been studied monthly using physical (Torrymeter, pH), chemical
(non-protein nitrogen, extractable protein nitrogen, total volatile basic nitrogen, TBA number, peroxide
value, hypoxanthine) microbiological (enumeration of bacteria using Plate Count Agar, Oxoid and Marine Agar
Difco) and organoleptic methods. .
The proximatecomposition was also followed for 1 year and there was a good correlation between the fat content
and the qualitative evaluation made by biologists.
Skinned and boneless fillets from 12 batches totalling 195 fish were analysed during 1984/85.
- 36 -
SPAIN
No report received.
SWEDEN
(0. Hagströml
SAMPLING
Herring
Area
Kattegat
Skagerrak
Quarter
Type of
fish
No. of Samples
Research
Vessel Market
No. of Fish
Measured
Aged
No. of Fish
examined
racially
I, II, III
12
83
29 409
2 895
1 894
IV, V, VI
-
33
7
43
866
1 251
633
VII. VIII,
IX
9 337
15 325
814
X. XI, XII
-
73
25 656
1 598
1 136
I, II, III
14
14
9 333
1 731
872
-
4
1 069
297
234
VII, VIII,
IX
11
23
12 392
2 097
1 048
X, XI. XII
-
31
9 501
1 083
602
IV, V. VI
The Sound
VII. VIII,
IX
2
-
646
286
137
Baltic
VII, VIII;
IX
9
-
4 002
1 521
643
55
304
116 670
13 625
8013
Total
RESEARCH VESSEL SURVEYS
Area
Season
Objectives
Kattegat. Skagerrak
11
Investigation on young fish;
herring larvae and stock separation
Kattegat, Skagerrak, VIII,
Baltic
IX
Acoustic survey;
herring, sprat
!
I
,
l
- 37 -
UNITED KINGDOM CEngland and Wales)
CP 0
Johnson)
Sarnpling Data
HERRING
Area
Quarter
Type
of
Fish
No.of Sampies
Market'
Res.
Vessel
Central
North
Sea
IIVb
1
3
3
.3
Immat.
Spawn.
Spawn.
Immat.
49
8
Southern
North
Sea
IVe
1
1
1
2
3
4
4
4
Immat.
Adult
Spent
Spawn.
Adult
AdUlt
Spent
Spawn.
fl
VIId
No. of Fish
meaSured
aged
8,727
1,976
182
280
1,836
835
112
160
1,836
835
112
160
73
713
438
221
112
529
481
213
73
71.3
438
221
112
529
481
213
231
2,788
818
674
159
2,235
1,386
544 .
6
4
2
1
4
5
3
examined
raeially
'Most of the market samples derived from
estuary fisherics in the Wash and Thames, and
involved loeal spring spawning herring stocks.
SPRAT
Quarter
Area
No.of Sampies
Res.
Vessel
49
Contral Norlh SRa IVb
Southern N. Sea IVe
VIId
West Channel Vlle
Bristol Channel VIIf
Market
1
1
4
1
1
1
4
20
3
3
9
9
No. of Fish
measured
aged
3,293
825
1,003
767
513
154
435
277
270
80
2,055
95
1,737
606
95
347
77
77
- 38 -
MACKEREL
Quarter
No.of Sampies
No. of Fish
Area
Res.
Vessel
Market
IVb
VIIe
1
2
3
4
1
9
2
7
2
1
measured
aged
15
15
202
859
392
836
0
178
411
240
8,343
30
0
0
VIa
1
3
VIlq
1
3
4
2
1
1
17
25
8
0
36
0
VIIh
1
4
5
2
5,091
40
195
0
VIIj
1
3
4
10
3
4
18,829
82
2,152
31~
6,099
273
2,431
1,905
699
144
VfId
3
VIII
1
4
------------
10
5
46
132
SCAD (HORSE MACKEHEL)
Quarter
NO.of Sampies
No. of Fish
Area
Res.
Vessel
Market
rneasured
dged
Vlle- j
1
3
4
2
3
2
3,175
1,127
2,443
282
318
362
VIlla ·e
VITIa
1
3
4
2
1
1
2,736
221
2,030
368
118
236
----
IL
- 39 -
PILCHARD
Quarter
NO.of Sampies
No. of Fish
Area
Res.
Vessel
VIIe
1
4
VIIf
Market
2
3
VrIh
1
4
VIII
2
1
measured
aged
90
216
0
120
31
31
101
101
136
331
136
147
Research yessel Surveys 1985
HERRTNG
Area
Dates
S. North Sea/E.Channel
IVc/VIId
4-22 Jan
Herring larval survey
North Sea IVb-c
31 Jan-27 Feb
lnt. Young Fish Survey
(incl. herring/sprat
distribution and abundance)
S. North Sea/E.Channel
lVc/VIId
1-15 Feb
Acoustic and fishing survey
for spent herring
NE coast England lVb
14-29 Aug
Acoustic and fishing survey
for spawning herring
Herring larval survey
lVb
lVb
S. North Sea/E.Channel
lVc/VIId
20 Sep-11 Oct
18-31 Oct
Objectives
"
.
6-2- Dec
Acoustic fishing survey for
spawning herring
8-28 Jul
Fishing survey for O-group
herring
Charter Vessel
English east coast
lVb-c
MACKEREL/SCAD (HORSE MACKEREL)
Area
Dates
Celtic SealWestern
Approaches
8 Mar-3 Apr
Trawl survey
8-25 Jul
Trawl survey
28 Nov-20 Dec
Trawl survey
Western Areal
Continental Slope
Objectives
- 40 -
OTHER RESEARCH ACTIVITIES
1) Daily growth
herring.
ring
studies
on
otoliths from larval and O-group
2) Studies on "Index of Otolith Shape" (I.O.S) in 0/1 group herring
as an aid to stock separation.
3) Fecundity assessment on Bank herring using material collected
off the north-east coast of England during the August survey.
4) Two Argos buoys were released and tracked in relation to the
drift of herring larval patches off the north-east coast of England
during September-October. The results of the larval surveys in this
area showed increased larval production with an extension of
spawning area to encompass former grunds such as the western edge
of the Dogger Bank, Outer Dowsing and North-East Bank.
l
- 41 UNITED KINGDOM
(Scotland)
(R.S. BAILEY)
Sampling Data for Herring 1985
Area
Season
Nurnber of sarnples
Research
Vesse1
Uower
figures)
North Western
North Sea (03)
Jan-Mar
Market
(upper
figures)
North Eastern
North Sea (04)
Jan-Mar
0
0
10
2663
4981
243
287
0
0
108
15435
12805
1437
2688
0
690
6
1334
374
419
84
0
0
0
0
459
0
67
0
0
0
0
0
0
0
0
156
0
60
0
0
0
0
0
0
0
114
0
56
0
2
April-June
0
July-Sept
8
Oct-Dec
VIa South (06)
0
Jan-Mar
Rada1
0
367
106
Oct-Dec
Aged
0
4981
10
Ju1y-Sept
Measured
0
23
April-June
Nurn ber of fish
6
April-June
0
0
0
0
0
July-Sept
0
0
0
0
0
0
0
148
39
0
0
Oct-Dec
0
6
- 42 Sampling Data for Herring 1985 (continued)
Area
VIa North (07)
Season
Number of sampIes
Number of fish
Research
Vesse1
(tower
figures)
Measured
Jan-Mar
Market
(upper
figures)
0
July-Sept
6285
3775
110
1178
0
0
0
0
0
0
4
468
434
0
228
0
50
31
8491
3783
983
9Z6
0
0
2
649
1547
150
546
0
0
46
9835
1055
565
338
0
0
77
7576
0
685
0
0
0
3
413
1
285
0
0
0
1234
0
88
0
0
0
0
0
0
9
2123
2118
402
195
0
0
0
0
0
0
3
Oct-Dec
28
Clyde (07)
Jan-Mar
11
April-June
9
July-Sept
0
Oct-Dec
South Buchan (08)
Jan-Mar
9
April-June
0
July-Sept
23
Oct-Dec
0
Racial
25
40
April-June
Aged
II
L
- 43 Sampling Data for Herring 1985 lcontinued)
A:rea
Central North
Sea (09)
Season
Number of sampIes
Number of fish
Research
Yessel
(Iower
figures)
Measured
Market
(upper
figures)
0
0
4510
0
188
0
0
0
0
0
0
0
0
0
2.805
0
2.2.7
0
0
July-Sept
2.9
VIIB (10)
Racial
2.3
Jan-\lar
April-June
Aged
Oct-Dec
0
0
0
0
0
Oct-:)ec
10
0
690
192-
0
HER RING
Research Vessel Surveys
Season
Objectives
North and West of Scotland
January
Recruit Trawling survey
North western North Sea to
German Bight
February
lnt ernational Young Fish Survey
Firth of Clyde (Ballantrae Bank)
February'.1arch
Larval Survey, Trawling and
Acoustic Survey
Firth of Clyde
'.lay-June
Trawling and Acoustic Survey
North western North Sea
June-July
Microtagging and Tag Recovery
North western North Sea
July
Acoustic and Trawling Survey
North of Scotland
AugustSeptember
Larval Patch Survey
Moray Firth to Firth of Forth
September
Larval Survey
Northern North Sea and West
of Scotland
September
Larval Survey
West of Scotland and North
West Ireland
October
Larval Survey
West of Scotland and North western
North Sea
November
Trawling and Acoustic Survey
Area
Season
North Western North Sea June-July
Type of Tags
No Tagged Type of Fish Recoveries
Magnetic Microtags
13,000
Mature
3Z
Other Research Activities
a.
Continuation of herring parasitological work with a view to determining stock mixing
b.
Herring fecundity work in association with work on herring energetics
c.
Studies on the dynamics of larval patches in conjunction with hydrographie studies.
-
1~5
-
MACKEREL
Sampling
Area
Type of
l'ish
Season
No of
sample~
Research
Vessel
IVa
~orthern
orth Sea
Apr-Jun
Jul-Se;:>
I'!T'atu:'b
t\;'t~:: t
II'_'ulA,h.. 1t
IVb
Jan-\1ar
~,
orth Sea
~Ia
Jan-~·lar
6
r-1easured
Ap;erl
37
22
135
758
21
24
227
I :', nture
1
3
3
I:1'.:::/A.fl :1t
13
829
130
I-·',-.,"·'''':'7 .
~dtJ" t.
24
22
17
16
73
Apr-Jun
Jul-Sep
Jan-~·1ar
~(
iSco land
~o1arket
No of fish
Apr-.Jun
Ju1-5ep
1
fl
3351
501
1468
10182
0ct-Dec
;'d"Jt
Im,./.:.:!t:."'.. t
rvIIa
Irish Sea
Ju1-Sep
Adult
~lIb
;lest of
Oct-Dec
"'M1rt:/~'~ ~
"t
8
213
b~~;t
Oct-Dec
:.tl:i. "",.lr." t.
2
9
50~
168
582
1554
174
175
~
Sole
~
Research Vessel
Su~veys
Area
Date
Objectives
West United Kingdom
December
qecruit Survey
Other Research Activities
Investigation cf mackerel otoli th morphometr'ics wi th a view to stocK
discrimination.
- 46 -
SPRAT
Season
NO.of Samples
No. of Fish
Area
Res.
Vessel
Northern North
Sea IVa
Jan-Mar
Jul-Sep
Oet-Dee
17
Central North
Sea IVb
Jan-Mar
Jul-Sep
19
West of Scotland VIa
Jan-Mar
Apr-Jun
Jul-Sep
Oet-Dee
34
10
2
15
West of Ireland VIIb
Oct-Dee
Commereial
12
2
11
22
measured
aged
2,082
1,275
40
556
310
1,896
636
238
269
4,887
2,330
138
6,074
674
371
99
400
251
120
SPURDOG (Squalus aeanthias)
Season
No.of Samples
No. of Fish
Arca
Res.
Vessel
Commereial
measured
North. N.Sea IVa
Jan-Mar
Jul-Sep
Oet-Dee
11
7
1
211
12
7
Central N.Sea IVb
Jan-Mar
Jul-Sep
6
14
39
88
W. Scotland VIa
Jan-Mar
Apr-Jun
Jul-Sep
Oet-Dee
46
25
1,578
624
2,284
1,463
W. Ireland VIIb
Oet-Dee
8
167
Grt Sole Bank VIIj
Oet-Dec
2
101
6
17
aged
(R.C. Hennemuth)
In lieu of a detailed report of aetivities, the Uni ted States has
essentially eontinued with the aetivities reported last year. There
was an increase in effort to asses the fisheries for large sharks
and sword fi sh.
•,,'
i!
I
- 47 -
Il'1
U.S.S.R.
(S.A. Studenetskyl
Research vessels expealtions in 1985
Period
Survey area
Investigations
West Ireland sheli' ,
areas off the Hebrides
Faroe and Shetland
Islands
Feb-Apr Acoustic survey of blue whiting
on spawning grounds
Norwegian Shallows
Feb-Apr Studying of spawning efficiency
in Atlanto-Scandinavian herring
SW Barents Sea
Apr-Jun Survey on bottom and pelagic
fish larvae
Aug
Faroe Islands and
off-shore Norwegian
Sea areas
International acoustic survey
of blue whiting on feeding
grounds
Barents Sea and adjacent
waters
Aug-Sep
International Q-group fish
survey
Barents Sea
Sep-Oct
International acoustic survey
on stock assessment of the
Barents Sea capelin and young
Atlanto-Scand~an herring
Materials on pelagic fisbes collected in 1985
i
4
of age samplesi No. of fish-collected:measured: aged
.
.
Blue whiting
I
I
Jan Prespawning
Ira
I
Jan
Feb
Mar
Sum
Apr
May
Jun
Sum
II
227
Prespawning
Spawning
Postspawning
1
Postspawning
Feeding
Feeding
1
4
7
6
17
1199
1106
717
,022
6291
19026
20449
45766
100
100
400
700
600
1700
- 48 -
1
2
:3
IIa
IrI
Jul
Aug
Sep
Sum
Nov
IV
Total
II
IVa
I
Vb1
Ir
IIr
Total
VIa
I
Ir
4-
5
Feeding
Fee ding
Feeding
5
5
2
12
Fee ding
30
Jun Fe e ding
Jan
Feb
Mar
Sum
Apr
May
Sum
Aug
Fee ding
Feeding
Fe eding
Feeding
Feeding
Fee ding
Total
Spawning
VIb
I
Ma.r
VIIb,c
I
Feb Prespawning
Mar Spawning
Total
14078
12086
815
26979
477
76244
7
500
500
200
1200
3000
326
1
100
1987
1151
2683
5821
4018
3552
7570
2013
15404
100
200
200
300
500
500
1200
5
1
6
8
760
1926
328
2254
3014
138
500
100
600
738
1
1866
100
3
1438
2363
3801
300
300
3
7235
3593
10828
200
100
300
1
1
152
1437
1589
100
100
2
2
317
1470
1787
200
200
1
2
2
3
5
5
12
Mar Spawning
Apr Postspawning
May Feeding
Sum
6
2
3
VIIg,h,i,k
I
Feb Prespawning
Mar Spawning
Total
XIV
Ir
Apr
May
Postspawning
Fee ding
Total
2
1
Polar cod
I
I
Jan Prespawning
Feb Prespawning
Sum
1
L
- 49 -
1
I
4
2
3
II
III
Apr
Sep
Oct
Nov
Sum
Fee ding
Fee ding
Feeding
Prespawning
Oct
Prespawning
IV
Total
IIb
IV
.5
6
7
1
3
4
316
3771
100
300
100
1.5077
4
10
870
1.5947
21821
100
700
1
89
100
1
2
3
7
7
1
1.5
18
473
7511
7984
22386
21326
184.5
45557
.53541
100
200
300
700
700
100
1500
1800
Mackerel
IIa
II
III
May
Jun
Sum
Jul
Aug
Sep
Sum
Postspawning
Postspawning
Postspawning
Feeding
Feeding
Total
IVa
II
Apr Prespawning
May Prespawning
Jun Prespawning
237
4.58
66
761
Total
Vb 1
II
III
Total
VIa
II
Prespawning
Jun Prespawning
Sum
..lug Postspawning
1
1
1
2683
176
28.59
Apr
Prespawning
1
996
100
Apr Prespawning
Jun Prespawning
1
1
2
326
306
632
100
100
200
May
64.5
2038
100
100
100
VIIg,h,i,k
II
Total
VIIb,c
I
Mar Prespawning
3.56
- 50 -
1
2
3
4
5
6
7
Capelin
I
I
II
III
rr
Jan Prespawning
Feb
Mar
Sum
Apr
Aug
Sep
Sum
Oct
Nov
Dec
Sum
Prespawning
Spawning
Spawning
Fee ding
Feeding
Feeding
Feeding
Fe e ding
Total
IIa
I
Feb Prespawning
Mar Spawning
Total
IIb
I
III
rv
Mar
Aug
Sep
Sum
Oct
Nov
Dec
Sum
Spawning
Feeding
Feeding
Feeding
Feeding
Feeding
19
19
6
6
12
24
68
23927
24633
29675
78235
7294
3804
26787
30591
19170
15350
12349
46869
162989
1310
1310
600
600
680
1880
5690
3
3
6
5907
4477
10384
300
300
600
5
12
6
23
2
1
18
19
3
5
24
5453
608
335
6396
18666
3
8
4
15
1
1
2
3358
9485
4373
17216
8272
511
8783
2
Total
643
647
10980
11627
500
1200
600
2300
200
100
1440
1540
300
130
430
1970
Herring
I
I
II
Jan Immature
Feb Immature
Mar Immature
Sum
Apr Immature
May Immature
Sum
138
900
300
1338
100
100
200
- 51 1
I
2
3
Irr
Sep
Oct
Nov
Dec
Sum
IV
4
Immature
Immature
Immature
Immature
I
II
IV
1
12
2
1
15
33
Total
IIa
5
Feb Prespawning
Mar Spawning. postspawn.
Sum
Apr Spawning, postspawn.
Oct Immature
Total
1
6
7
2
9
6
687
8944
12793
9687
31424
58110
50
812
200
100
1112
2700
186
3321
3507
471
1444122
100
412
512
200
IVa
II
ay
Prespawning
629
Vb 1
II
May
Prespawning
975
VIa
II
Apr
Prespawning
205
• Age sampIes were collected by research vessels only
•• No racial analyses were made
7
712
C.M. 1986/H:l
Report of Activities
International Council ror the
Exploration of the Sea
ADDENDUM 1
PELAGIC FISH COMMITTEE
Denmark
Species: Herring
No of sarnples
Area
Season
Type of
fish
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
Belt
Sea
1
2
3
4
Mixed
The
Fiords
1
2
3
4
Mixed
North
Sea
Skager
rak
Kattegat
The
Sound
Baltic
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
Research
vessel
Market
No of fish
Measured
Aged
Exarnined
racially
144
172
48
44
3870
474
669
2228
3863
472
666
.2224
1643
328
0
1755
32
22
24
7
2060
1473
2034
251
2060
1473
1938
251
0
326
743
0
34
30
36
27
4373
1573
8854
5919
4249
1573
8853
5919
125
0
547
160
0
0
0
2
0
0
0
248
0
0
0
240
0
0
0
248
2
5
6
10
0
813
986
2316
0
213
986
2316
0
213
0
0
0
7
0
0
0
1038
0
0
0
1038
0
0
0
572
18
17
25
25
303
797
3245
1900
303
797
2601
1900
0
0
0
0
0
0
Species:
Area
Ncrth
Sea
Skagerrak
Kattegat
The
Be1t
Sea
Ba1tic
Season
Sprat
Type cf
fish
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
1
2
3
4
Mixed
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
lt
No of sampIes
Market
Research
vesse1
No of fish
Measured Aged
144
172
48
44
2033
319
-0
14
2032
307
-0
14
32
22
24
7
123
16
10
4
123
16
10
4
34
30
36
27
1057
570
190
217
1057
570
190
217
2
5
6
10
0
170
328
509
0
170
328
509
18
17
25
25
0
450
350
724
0
450
224
724
Exarnined
racia11v
Species:
Blue Whiting
No of sampies
Area
North
Sea
Season
1
2
Mixed
3
"
"
4
Skagerrak
Type of
fish
1
2
3
4
"
Mixed
"
"
"
Research
vessel
Market
No of fish
Measured
Aged
144
172
48
44
1675
298
13
4
1669
298
13
32
22
24
7
1
1
0
0
0
66
66
0
0
Examined
racial1v
Species: Mackerel
No of sampies
Area
North
Sea
Skagerrak
Season
Type of
fish
1
Mixed
2
3
4
"
1
2
3
4
"
"
Mixed
"
"
"
Research
vessel
Market
No of fish
Measured
Aged
2
0
0
144
172
48
44
228
58
32
22
24
7
0
0
3
0
0
Examined
racia 11 y
224
57
0
0
0
0
l
1
I