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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 Map tips - Click on
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| FAO Fishing Statistical Division Areas |
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| 27.3.a | Skagerrak and Kattegat (Division 27.3.a) |
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| 27.4.a | Northern North Sea (Division 27.4.a) |
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| FAO Fishing Statistical Sub Areas |
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| 27.1 | Barents Sea (Subarea 27.1) |
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| 27.2 | Norwegian Sea, Spitzbergen, and Bear Island (Subarea 27.2) |
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| 27.8 | Bay of Biscay (Subarea 27.8) |
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| 27.9 | Portuguese Waters (Subarea 27.9) |
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| 27.12 | North of Azores (Subarea 27.12) |
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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 Reference Year is the last year considered in the stock assessment and/or fishery status. |
| | | | | | Biological State and Trend Trends in landings suggest serious depletion, at least in Subareas IIa and IIb (Figure 9.4.11.3.1). 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 27.3.a) | | 27.4.a: Northern North Sea (Division 27.4.a) | | FAO Fishing Statistical Sub Areas | 27.1: Barents Sea (Subarea 27.1) | | 27.12: North of Azores (Subarea 27.12) | | 27.2: Norwegian Sea, Spitzbergen, and Bear Island (Subarea 27.2) | | 27.8: Bay of Biscay (Subarea 27.8) | | 27.9: Portuguese Waters (Subarea 27.9) |
| | | | | | 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). Source of information ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009. |
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