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Roundnose grenadier - Northeast Atlantic, 2008
Marine Resource  Fact Sheet
ICES Advice 2009
Roundnose grenadier - Northeast Atlantic, 2008
Fact Sheet Citation  
Roundnose grenadier (Coryphaenoides rupestris)
Owned byInternational Council for the Exploration of the Sea (ICES) – More
Related observationsLocate in inventorydisplay tree map
 
Species:
FAO Names: en - Roundnose grenadier, fr - Grenadier de roche, es - Granadero de roca, ru - Макрурус тупорылый
Geographic extent of Roundnose grenadier - 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 9.4.15.1. Total landings of roundnose grenadier by area (WG estimates). Note: preliminary 2007 estimates of landings do not include landings from Spain.
Year IIIa Vb, VI, VII, XIIb MAR Other Total
1988 617 33 10606 55 11311
1989 885 2750 9495 241 13371
1990 1067 7279 2838 480 11664
1991 1528 10276 7510 675 19989
1992 2328 12168 1979 731 17206
1993 1510 12130 3161 618 17419
1994 1633 9014 1132 457 12236
1995 2081 9634 359 516 12590
1996 2213 9701 347 239 12500
1997 1522 10907 7047 372 19848
1998 1819 11995 7601 401 21816
1999 3126 15027 1154 376 19683
2000 2404 25428 2330 118 30280
2001 3102 50125 1785 373 55385
2002 4220 19524 976 664 25384
2003 4302 28413 782 1053 34550
2004 9890 18203 465 617 29175
2005 11922 16778 1399 130 30229
2006 2265 9535 1 130 11931
2007* 1 3146 2 65 3214
* Preliminary.


Figure 9.4.15.1. Total landings of roundnose grenadier by area (WG estimates). Top: absolute landings (tonnes). Bottom: relative proportion by area. Note: preliminary 2007 estimates of landings do not include landings from Spain.


Management
Management unit: Yes

Management Advice

Management considerations

This section deals with a species distributed over a wide area which may be composed of several populations. Age analyses suggest that roundnose grenadier may have a longevity of around 70 years and a slow growth.

The scientific basis for stock identification is uncertain. The Wyville-Thomson Ridge and fjord sills, between Western Scotland and the edge of the North Sea slope, could be natural physical boundaries. It is therefore considered that the northern North Sea and the Norwegian Deep could represent a separate management unit (IIIa and IVa). The roundnose grenadier on the Mid-Atlantic Ridge and the Hatton Bank are separated by a major oceanic basin and may constitute separate management units. This would indicate that the management units could be split as:

  • Division (IIIa)
  • Subareas VI, VII, and Divisions Vb, XIIb
  • Mid-Atlantic ridge (Xb, XIIc, Va1, XIIa1, XIVb1)
  • All other areas. (I, II, IV, Va2 VIII, IX XIVa XIVb2)


Trends in landings for all areas are shown in Figure 9.4.15.1 and Table 9.4.15.1.
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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