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| Marine Resource Fact Sheet |
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| Blue Ling - Other areas of Northeast Atlantic |
 | Blue ling in Subdivisions I, II, IIIa, Iva, VIII, IX and XII |
| | Data Ownership | | This document provided, maintained and owned by International Council for the Exploration of the Sea (ICES) , is part of ICES Advice data collection. |
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| Related observations | Locate in inventory | | | | Species: | | FAO Names: en - Blue ling, fr - Lingue bleue, es - Maruca azul, ru - Мольва голубая (=биркеланга) |
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| Geographic extent of Blue Ling - Other areas of Northeast Atlantic
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| FAO Fishing Statistical Division Areas |
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| 27.3.a | Skagerrak and Kattegat (Division IIIa) |
|---|
| 27.4.a | Northern North Sea (Division IVa) |
|---|
| FAO Fishing Statistical Sub Areas |
|---|
| 27.1 | Barents Sea (Subarea I) |
|---|
| 27.2 | Norwegian Sea, Spitzbergen, and Bear Island (Subarea II) |
|---|
| 27.8 | Bay of Biscay (Subarea VIII) |
|---|
| 27.9 | Portuguese Waters (Subarea IX) |
|---|
| 27.12 | North of Azores (Subarea XII) |
|---|
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| Main Descriptors | Considered a single stock: Yes
Spatial Scale: Sub-Regional
Reference Year: 2008 |
| Considered a single stock: A group of individuals in a species occupying a well defined spatial range independent of other stocks of the same species. It can be affected by random dispersal movements and directed migrations due to seasonal or reproductive activity. |
| Spatial Scale: Spatial scale contains a standard term such as Global, Regional (e.g. for the whole Atlantic), sub-regional (e.g. for a part of the Atlantic), national, local (for sub-national levels). |
| Considered a management unit: An aquatic resource or fishery is
declared as [Fishery] Management Unit if it is
effectively the focus for the application of selected
management methods and measures, within the broader
framework of a management system. According to the FAO
Glossary for Responsible Fishing, "a Fishery Management
Unit (FMU) is a fishery or a portion of a fishery
identified in a Fishery Management Plan (FMP) relevant
to the FMP's management objectives." FMU's may be
organised around fisheries biological, geographic,
economic, technical, social or ecological dimensions ,
and the makeup and attribute of a fishery management
unit depends mainly on the FMP's management
objectives. |
| Jurisdictional distribution: Jurisdictional qualifier (e.g.
"shared", "shared - highly migratory") of the aquatic
resource related with its spatial distribution. |
| Environmental group: Classification of the aquatic
resource according to the environmental group (e.g.
pelagic invertebrate, or demersal fish) to which the
species belong. |
| Reference Year: The last year considered in the assessment. |
| | | | | | Habitat and Biology Depth zone: Slope (200 m - 1000 m). Vertical distribution: Demersal/Benthic. Water Area Overview Spatial Scale: Sub-Regional Geo References  | | Geographic extent of Blue Ling - Other areas of Northeast Atlantic
| FAO Fishing Statistical Division Areas | 27.3.a: Skagerrak and Kattegat (Division IIIa) | | 27.4.a: Northern North Sea (Division IVa) | | FAO Fishing Statistical Sub Areas | 27.1: Barents Sea (Subarea I) | | 27.12: North of Azores (Subarea XII) | | 27.2: Norwegian Sea, Spitzbergen, and Bear Island (Subarea II) | | 27.8: Bay of Biscay (Subarea VIII) | | 27.9: Portuguese Waters (Subarea IX) |
| | | | | | Intersecting Major FAO areas and LME areas |
The following area codes have been found as intersecting the distribution of Blue Ling - Other areas of Northeast Atlantic | FAO Major Fishing Areas | 27:
Atlantic, Northeast | | Large Marine Ecosystem Areas (LME) | 19: East Greenland Shelf | | 20: Barents Sea | | 21: Norwegian Shelf | | 22: North Sea | | 24: Celtic-Biscay Shelf | | 25: Iberian Coastal | | 58: Kara Sea | | 59: East Greenland Shelf/Sea | | 60: Faroe Plateau | | 64: Arctic Ocean |
Resource Structure Considered a single stock: Yes Assessment Assessment Model Methodology Scientific basisVery few fisheries data are available for blue ling in these areas. The advice is based solely on trends in landings. Uncertainties in assessment and forecastLandings reported from Subareas VIII and IX as blue ling ( Molva dypterygia) are considered to consist mainly of a related species Molva macropthalma. Comparison with previous assessment and adviceThere has been no change in the perception of blue ling in these areas. Overall Assessment Results Table 9.4.11.3.1. Blue ling (Molva dypterygia). Working Group estimates of landings (tonnes). Blue ling: Subarea I.
| Year |
Iceland |
Norway |
Germany |
Total |
| 1988 |
|
|
|
|
| 1989 |
|
|
|
|
| 1990 |
|
|
|
|
| 1991 |
|
|
|
|
| 1992 |
|
|
|
|
| 1993 |
|
|
|
|
| 1994 |
|
3 |
|
3 |
| 1995 |
|
5 |
|
5 |
| 1996 |
|
|
|
0 |
| 1997 |
|
1 |
|
1 |
| 1998 |
|
1 |
|
1 |
| 1999 |
|
|
|
0 |
| 2000 |
|
1 |
|
1 |
| 2000 |
|
3 |
|
3 |
| 2001 |
|
1 |
|
1 |
| 2002 |
|
1 |
|
1 |
| 2003 |
|
|
|
0 |
| 2004 |
|
1 |
|
1 |
| 2005 |
|
1 |
|
1 |
| 2006 |
|
|
|
0 |
| 2007* |
|
|
|
0 |
| *Preliminary. |
Table 9.4.11.3.1. Cont’d. Blue ling: Divisions IIa and b.
| Year |
Faroes |
France |
Germany |
Greenland |
Norway |
E & W |
Scotland |
Sweden |
Russia |
Total |
| 1988 |
77 |
37 |
5 |
|
3416 |
2 |
|
|
|
3537 |
| 1989 |
126 |
42 |
5 |
|
1883 |
2 |
|
|
|
2058 |
| 1990 |
228 |
48 |
4 |
|
1128 |
4 |
|
|
|
1412 |
| 1991 |
47 |
23 |
1 |
|
1408 |
|
|
|
|
1479 |
| 1992 |
28 |
19 |
|
3 |
987 |
2 |
|
|
|
1039 |
| 1993 |
|
12 |
2 |
3 |
1003 |
|
|
|
|
1020 |
| 1994 |
|
9 |
2 |
|
399 |
9 |
|
|
|
419 |
| 1995 |
0 |
12 |
2 |
2 |
342 |
1 |
|
|
|
359 |
| 1996 |
0 |
8 |
1 |
|
254 |
2 |
2 |
|
|
267 |
| 1997 |
0 |
10 |
1 |
|
280 |
|
|
|
|
291 |
| 1998 |
0 |
3 |
|
|
272 |
|
3 |
|
|
278 |
| 1999 |
0 |
1 |
1 |
|
287 |
|
2 |
|
|
291 |
| 2000 |
|
2 |
4 |
|
240 |
1 |
2 |
|
|
249 |
| 2001 |
8 |
7 |
|
|
190 |
1 |
2 |
|
|
208 |
| 2002 |
1 |
1 |
|
|
129 |
1 |
17 |
|
|
149 |
| 2003 |
30 |
|
|
|
115 |
|
1 |
1 |
|
147 |
| 2004 |
28 |
1 |
|
|
144 |
|
|
|
1 |
174 |
| 2005 |
47 |
3 |
|
|
144 |
1 |
|
|
2 |
197 |
| 2006 |
49 |
4 |
|
|
149 |
|
|
|
|
202 |
| 2007* |
102 |
3 |
|
|
154 |
|
4 |
|
|
263 |
| *Preliminary. |
Table 9.4.11.3.1. Cont’d. Blue ling: Subarea III.
| Year |
Denmark |
Norway |
Sweden |
Total |
| 1988 |
10 |
11 |
1 |
22 |
| 1989 |
7 |
15 |
1 |
23 |
| 1990 |
8 |
12 |
1 |
21 |
| 1991 |
9 |
9 |
3 |
21 |
| 1992 |
29 |
8 |
1 |
38 |
| 1993 |
16 |
6 |
1 |
23 |
| 1994 |
14 |
4 |
|
18 |
| 1995 |
16 |
4 |
|
20 |
| 1996 |
9 |
3 |
|
12 |
| 1997 |
14 |
5 |
2 |
21 |
| 1998 |
4 |
2 |
|
6 |
| 1999 |
5 |
1 |
|
6 |
| 2000 |
13 |
1 |
|
14 |
| 2001 |
20 |
4 |
|
24 |
| 2002 |
8 |
1 |
|
9 |
| 2003 |
18 |
1 |
|
19 |
| 2004 |
18 |
1 |
|
19 |
| 2005 |
48 |
1 |
|
49 |
| 2006 |
42 |
|
|
42 |
| 2007* |
|
|
|
0 |
Table 9.4.11.3.1. Cont’d. Blue ling: Division IVa.
| Year |
Denmark |
Faroes |
France (IV) |
Germany |
Norway |
E & W |
Scotland |
Ireland |
Total |
| 1988 |
1 |
13 |
223 |
6 |
116 |
2 |
2 |
|
363 |
| 1989 |
1 |
|
244 |
4 |
196 |
12 |
|
|
457 |
| 1990 |
|
|
321 |
8 |
162 |
4 |
|
|
495 |
| 1991 |
1 |
31 |
369 |
7 |
178 |
2 |
32 |
|
620 |
| 1992 |
1 |
|
236 |
9 |
263 |
8 |
36 |
|
553 |
| 1993 |
2 |
101 |
76 |
2 |
186 |
1 |
44 |
|
412 |
| 1994 |
|
|
144 |
3 |
241 |
14 |
19 |
|
421 |
| 1995 |
|
2 |
73 |
|
201 |
8 |
193 |
|
477 |
| 1996 |
|
0 |
52 |
4 |
67 |
4 |
52 |
|
179 |
| 1997 |
|
0 |
36 |
|
61 |
0 |
172 |
|
269 |
| 1998 |
|
1 |
31 |
|
55 |
2 |
191 |
|
280 |
| 1999 |
2 |
|
21 |
|
94 |
25 |
120 |
2 |
264 |
| 2000 |
2 |
|
15 |
1 |
53 |
10 |
46 |
2 |
129 |
| 2001 |
7 |
|
9 |
|
75 |
7 |
145 |
9 |
252 |
| 2002 |
6 |
|
11 |
|
58 |
4 |
292 |
5 |
376 |
| 2003 |
8 |
|
8 |
|
49 |
2 |
25 |
|
92 |
| 2004 |
7 |
|
17 |
|
45 |
|
14 |
|
83 |
| 2005 |
6 |
|
7 |
|
51 |
|
2 |
|
66 |
| 2006 |
6 |
|
6 |
|
82 |
|
|
|
94 |
| 2007* |
5 |
|
2 |
|
55 |
|
|
|
62 |
Table 9.4.11.3.1. Cont’d. Blue ling: Subarea XII.
| Year |
Faroes |
France |
Germany |
Spain |
E & W |
Scotland |
Norway |
Iceland |
Poland |
Lithuania |
Russia |
Total |
| 1988 |
|
263 |
|
|
|
|
|
|
|
|
|
263 |
| 1989 |
|
70 |
|
|
|
|
|
|
|
|
|
70 |
| 1990 |
|
5 |
|
|
|
|
|
|
|
|
|
5 |
| 1991 |
|
1147 |
|
|
|
|
|
|
|
|
|
1147 |
| 1992 |
|
971 |
|
|
|
|
|
|
|
|
|
971 |
| 1993 |
654 |
2591 |
90 |
|
|
|
|
|
|
|
|
3335 |
| 1994 |
382 |
345 |
25 |
|
|
|
|
|
|
|
|
752 |
| 1995 |
514 |
47 |
|
|
12 |
|
|
|
|
|
|
573 |
| 1996 |
445 |
60 |
|
264 |
|
19 |
|
|
|
|
|
788 |
| 1997 |
1 |
1 |
|
411 |
4 |
|
|
|
|
|
|
417 |
| 1998 |
36 |
26 |
|
375 |
1 |
|
|
|
|
|
|
438 |
| 1999 |
156 |
17 |
|
943 |
8 |
43 |
|
186 |
|
|
|
1353 |
| 2000 |
89 |
23 |
|
406 |
18 |
23 |
21 |
14 |
|
|
|
594 |
| 2001 |
6 |
26 |
|
415 |
32 |
91 |
103 |
2 |
|
|
|
675 |
| 2002 |
19 |
|
|
1234 |
8 |
|
9 |
|
|
|
|
1270 |
| 2003 |
|
7 |
|
971 |
|
2 |
40 |
|
12 |
37 |
|
1069 |
| 2004 |
|
27 |
|
610 |
|
|
|
|
|
|
7 |
644 |
| 2005 |
|
10 |
|
636 |
|
|
|
|
|
8 |
|
654 |
| 2006 |
|
61 |
|
|
|
|
|
|
|
|
4 |
65 |
| 2007* |
1 |
|
|
|
|
|
|
|
|
|
|
1 |
9.4.11.3.1. Cont’d. Blue ling: Total landings by Subarea/Division (landings from Areas VIII, IX, and X given in previous reports are now considered to represent Molva macropthalma).
| Year |
I |
II |
III |
IV |
XII |
Total |
| 1988 |
|
3537 |
22 |
363 |
263 |
4185 |
| 1989 |
|
2058 |
23 |
459 |
70 |
2610 |
| 1990 |
|
1412 |
21 |
501 |
5 |
1939 |
| 1991 |
|
1479 |
21 |
627 |
1147 |
3274 |
| 1992 |
|
1039 |
38 |
554 |
971 |
2602 |
| 1993 |
|
1020 |
23 |
415 |
3335 |
4793 |
| 1994 |
3 |
419 |
18 |
424 |
752 |
1616 |
| 1995 |
5 |
359 |
20 |
483 |
573 |
1440 |
| 1996 |
0 |
267 |
12 |
190 |
788 |
1257 |
| 1997 |
1 |
291 |
21 |
270 |
417 |
1000 |
| 1998 |
1 |
278 |
6 |
286 |
438 |
1009 |
| 1999 |
0 |
291 |
6 |
265 |
1353 |
1915 |
| 2000 |
1 |
249 |
14 |
130 |
594 |
988 |
| 2001 |
3 |
208 |
24 |
252 |
675 |
1162 |
| 2002 |
1 |
149 |
9 |
377 |
1270 |
1806 |
| 2003 |
1 |
147 |
19 |
101 |
1069 |
1337 |
| 2004 |
0 |
174 |
19 |
83 |
644 |
920 |
| 2005 |
1 |
171 |
49 |
70 |
0 |
291 |
| 2006 |
0 |
202 |
42 |
94 |
65 |
403 |
| 2007* |
0 |
263 |
0 |
62 |
1 |
326 |
| *Preliminary. |
 | Figure 9.4.11.3.1. Blue ling (Molva dypterygia). Working Group estimates of landings (tonnes).  |
Scientific Advice Single-stock exploitation boundariesThere should be no directed fisheries for blue ling and management measures should be implemented to minimize the bycatch of this species in mixed fisheries. Blue ling is susceptible to sequential depletion of spawning aggregations and closed areas to protect spawning aggregations should therefore be maintained and expanded where appropriate. Management Management Advice Management considerationsBlue ling has been an important bycatch in the trawl fisheries for mixed deep-water species on Hatton Bank (Subarea XII). Biological State and Trend Exploitation rate: Undefined
Abundance level: Undefined Trends in landings suggest serious depletion, at least in Subareas IIa and IIb (Figure 9.4.11.3.1). Source of information ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009. |
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