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Blue Ling - Northeast Atlantic, 2008
Marine Resource  Fact Sheet
ICES Advice 2009
Blue Ling - Northeast Atlantic, 2008
Fact Sheet Citation  
Blue Ling (Molva dypterygia)
Owned byInternational Council for the Exploration of the Sea (ICES) – More
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Species:
FAO Names: en - Blue ling, fr - Lingue bleue, es - Maruca azul, ru - Мольва голубая (=биркеланга)
Geographic extent of Blue Ling - Northeast Atlantic
Main Descriptors
Considered a single stock: Yes        Spatial Scale: Sub-Regional
Management unit: Yes
 
 
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
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.
Biological State and Trend
Exploitation rate: Undefined
Abundance level: Undefined
Source of information
 
ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009.
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