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| Marine Resource Fact Sheet |
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| Blue Ling - Northeast Atlantic |
 | Blue Ling (Molva dypterygia) |
| | 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 - Northeast Atlantic
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| FAO Major Fishing Areas |
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| 27 | Atlantic, Northeast |
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| Main Descriptors | Considered a single stock: Yes
Spatial Scale: Sub-Regional
Management unit: Yes
Reference year: 2008
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| 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 Habitat and Biology Depth zone: Slope (200 m - 1000 m). Vertical distribution: Demersal/Benthic. Geographical Distribution Jurisdictional distribution: Straddling between High Seas and EEZ Water Area Overview Spatial Scale: Sub-Regional Geo References  | | Geographic extent of Blue Ling - Northeast Atlantic
| FAO Major Fishing Areas | 27: Atlantic, Northeast |
| | | | | | Intersecting Major FAO areas and LME areas |
The following area codes have been found as intersecting the distribution of Blue Ling - 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 | | 23: Baltic Sea | | 24: Celtic-Biscay Shelf | | 25: Iberian Coastal | | 58: Kara Sea | | 59: East Greenland Shelf/Sea | | 60: Faroe Plateau | | 64: Arctic Ocean | | 65: Arctic Archipelago |
Resource Structure Considered a single stock: Yes Assessment Overall Assessment Results
Table 9.4.11.1. Blue ling landings by management unit. Source: ICES estimates. Note: no information for Areas Va and XIV prior to 1973 and no information on other areas prior to 1988.
| Year | Va&XIV | Vb, VI, VII | other areas | Total | | 1966 | n/a | 1311 | n/a | 1311 | | 1967 | n/a | 1609 | n/a | 1609 | | 1968 | n/a | 3010 | n/a | 3010 | | 1969 | n/a | 1431 | n/a | 1431 | | 1970 | n/a | 3648 | n/a | 3648 | | 1971 | n/a | 2260 | n/a | 2260 | | 1972 | n/a | 4982 | n/a | 4982 | | 1973 | 2427 | 25402 | n/a | 27829 | | 1974 | 2592 | 20949 | n/a | 23541 | | 1975 | 2754 | 14576 | n/a | 17330 | | 1976 | 2137 | 19846 | n/a | 21983 | | 1977 | 2806 | 18201 | n/a | 21007 | | 1978 | 2368 | 13280 | n/a | 15648 | | 1979 | 3228 | 10778 | n/a | 14006 | | 1980 | 9145 | 22770 | n/a | 31915 | | 1981 | 9607 | 13309 | n/a | 22916 | | 1982 | 8179 | 10970 | n/a | 19149 | | 1983 | 7335 | 11491 | n/a | 18826 | | 1984 | 4043 | 15504 | n/a | 19547 | | 1985 | 1788 | 19256 | n/a | 21044 | | 1986 | 2211 | 21018 | n/a | 23229 | | 1987 | 1969 | 17430 | n/a | 19399 | | 1988 | 2409 | 18811 | 4185 | 25405 | | 1989 | 2600 | 14700 | 2610 | 19910 | | 1990 | 3097 | 11195 | 1939 | 16231 | | 1991 | 1979 | 10281 | 3274 | 15534 | | 1992 | 2990 | 11399 | 2602 | 16991 | | 1993 | 5958 | 8307 | 4793 | 19058 | | 1994 | 2305 | 5953 | 1613 | 9871 | | 1995 | 1833 | 7332 | 1440 | 10605 | | 1996 | 1337 | 8530 | 1257 | 11124 | | 1997 | 1348 | 10159 | 1000 | 12507 | | 1998 | 1210 | 10588 | 1009 | 12807 | | 1999 | 2093 | 12404 | 1915 | 16412 | | 2000 | 2167 | 11049 | 988 | 14204 | | 2001 | 1040 | 11653 | 1162 | 13855 | | 2002 | 1405 | 8272 | 1806 | 11483 | | 2003 | 2104 | 7420 | 1337 | 10861 | | 2004 | 1386 | 6165 | 920 | 8471 | | 2005 | 1604 | 5627 | 968 | 8199 | | 2006 | 1862 | 5549 | 404 | 7815 | | 2007* | 2102 | 5203 | 326 | 7631 |
Projection
 | Figure 9.4.11.1. Blue ling landings by management unit. Source: ICES estimates. Note: no information for Areas Va and XIV prior to 1973 and no information on other areas prior to 1988. Yield and spawning stock biomass per recruit.  |
Management Management unit: Yes Management Objectives
There is insufficient scientific information to establish the extent of putative stocks; however, blue ling may be sufficiently isolated at separate fishing grounds to be considered as individual management units. On this basis advice is presented for the following management units:
- Subdivisions Va and XIV (Iceland and Reykjanes ridge);
- Subdivisions Vb,VI, and VII (Faroes Rockall and Celtic shelf); and
- Subdivisions I, II, IIIa, IVa, VIII, IX, and XII. The latter grouping is a combination of isolated fishing grounds and these areas are grouped due to lack of data.
Available information indicates that stocks are stable at low levels in all areas. Total landings are presented in Table 9.4.11.1 and Figure 9.4.11.1.
Blue ling is a gadoid species that grows much faster than most deep-water species. It is particularly vulnerable to exploitation because fisheries can target the spawning aggregations. ICES has issued an answer to a request by NEAFC on spawning areas for blue ling in Section 9.3.2.7.
Source of information
ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009.
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