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| Marine Resource Fact Sheet |
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| Pelagic Redfish - Barents and Norwegian Seas, 2012 |
 | Beaked Redfish (Sebastes mentella) in Subareas I and II |
| | 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 - Beaked redfish, fr - Sébaste du Nord, es - Gallineta nórdica, ru - Клювач |
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| Geographic extent of Pelagic Redfish - Barents and Norwegian Seas
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| FAO Fishing Statistical Division Areas |
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| 27.2.a | Atlantic, Northeast / 27.2.a |
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| 27.2.b | Atlantic, Northeast / 27.2.b |
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| FAO Fishing Statistical Sub Areas |
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| 27.1 | Atlantic, Northeast / 27.1 |
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| Main Descriptors | Considered a single stock: Yes
Spatial Scale: Sub-Regional
Management unit: Yes |
| 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. |
| | | | | | Habitat and Biology Depth zone: Shelf (50 m - 200 m). Vertical distribution: Demersal/Benthic. This species is long-lived (maximum age 75 years), and inhabits pelagic and epibenthic habitats from 300 to 1400 m in the North Atlantic. The male and female aggregate to mate; the female releases live larvae (ovoviviparous) along the continental slope from 62°N to 74°N during March–April. The size and age at first maturity (50%) are 31 cm and 11 years. Larvae are pelagic and drift northward along the continental slope in the surface layers and eventually disperse over the shelf in the Barents Sea. The juveniles are predominantly distributed in the Barents Sea and Svalbard areas. Adults are widely distributed on the shelf, slope, and the open ocean, but south of 69°N hardly on the shelf. Geographical Distribution Jurisdictional distribution: Shared between nations Water Area Overview Spatial Scale: Sub-Regional
Ecoregion: Barents Sea.
Geo References  | | Geographic extent of Pelagic Redfish - Barents and Norwegian Seas
| FAO Fishing Statistical Division Areas | 27.2.a: Atlantic, Northeast / 27.2.a | | 27.2.b: Atlantic, Northeast / 27.2.b | | FAO Fishing Statistical Sub Areas | 27.1: Atlantic, Northeast / 27.1 |
| | | | | | Intersecting Major FAO areas and LME areas |
The following area codes have been found as intersecting the distribution of Pelagic Redfish - Barents and Norwegian Seas | 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 | | 58: Kara Sea | | 59: East Greenland Shelf/Sea | | 60: Faroe Plateau | | 64: Arctic Ocean |
Resource Structure Considered a single stock: Yes Exploitation The fisheriesA pelagic fishery for S. mentella has developed in the Norwegian Sea outside EEZs since 2004. This fishery is managed by the North-East Atlantic Fisheries Commission (NEAFC) who, by consensus, adopted a TAC for 2012 of 7500 t. Other catches of S. mentella are taken as bycatches in the demersal cod/haddock/Greenland halibut fisheries, as juveniles in the shrimp trawl fisheries, and occasionally in the pelagic blue whiting and herring fisheries in the Norwegian Sea.
| Catch distribution |
Total landings (2011) = 12.4 kt, of which 67% is taken by pelagic trawl in international waters in the Norwegian Sea and 33% as bycatch in the Barents Sea and adjacent waters. |
Assessment Scientific Advice ICES advises on the basis of the MSY approach that a commercial fishery can operate on Sebastes mentella in Subareas I and II, given that the total catch level, including bycatches and discards, does not exceed 47 000 tonnes. Measures currently in place to protect juveniles have proven successful and should be maintained. Assessment Model Scientific basis
| Assessment type |
Statistical catch-at-age 1992–2011. The Gadget model and the Schaefer biomass model are used in addition. |
| Input data |
Catch numbers-at-age from the pelagic and demersal fleets and numbers-at-age from three surveys in the Barents Sea (BS-NoRu-Q1-Btr, Eco-NoRu-Q3-Btr, Ru-Q4-Btr). |
| Discards and bycatch |
Not available. |
| Indicators |
Additional information from the Norwegian Sea pelagic surveys, international 0-group survey in Barents Sea (Eco-NoRu-Q3), and Norwegian Sea slope surveys. Cod consumption on juveniles (BS-NoRu-Q1-Btr, Eco-NoRu-Q3-Btr, Ru-Q4-Btr). |
| Other information |
Last benchmark was in February 2012 (ICES, 2012b). Assessment methodology has been revised. |
| Working group report |
AFWG (ICES, 2012a) |
Management Management unit: Yes Management plansNo specific management objectives have so far been implemented. Biological State and Trend Exploitation rate: Appropriate
Abundance level: Unknown  | Figure 3.4.5.1  |
Spawning-stock biomass has steadily increased from 1992 to 2005. Due to poor year classes during the period 1996–2003, the spawning-stock biomass is decreasing. Source of information The above excerpts are from the first two pages of the ICES advice, the supporting information to this advice can be read in full at the following reference: ICES. Beaked redfish (Sebastes mentella) in Subareas I and II. Report of the ICES Advisory Committee, 2012. ICES Advice, June 2012.  http://www.ices.dk/committe/acom/comwork/report/2012/2012/smn-arct.pdf |
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