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| Marine Resource Fact Sheet |
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| Deepwater rose shrimp - Northern Spain, 2010 |
 | Parapenaeus longirostris - Northern Spain |
| | Owned by | General Fisheries Commission for the Mediterranean (GFCM) More |
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| Related observations | Locate in inventory | | | | Species: | | FAO Names : en - Deep-water rose shrimp, fr - Crevette rose du large, es - Gamba de altura |
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| Geographic extent of Deepwater rose shrimp - Northern Spain
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 | GFCM geographical sub-areas |
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| 6 | Northern Spain |
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| Main Descriptors | Considered a single stock: Biological Stock
Spatial Scale: Sub-Regional
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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. |
| | | | | | Habitat and Biology Climatic zone: Temperate. Bottom type: Soft bottom. Depth zone: Slope 200 1000m. Horizontal distribution: Neritic. Vertical distribution: Demersal/Benthic. Geographical Distribution Jurisdictional distribution: Straddling between High Seas and EEZ Water Area Overview Spatial Scale: Sub-Regional Northern SpainGeo References | | Geographic extent of Deepwater rose shrimp - Northern Spain
| GFCM geographical sub-areas | 6: Northern Spain |
| | | | | | Other georeferences
| FAO Fishing Statistical Division Areas | 37.1.1: Balearic |
| | | | | | Intersecting Major FAO areas and LME areas |
The following area codes have been found as intersecting the distribution of Deepwater rose shrimp - Northern Spain Resource Structure Considered a single stock: Aq Res Struct Exploitation Deep-water rose shrimp ( Parapenaeus longirostris) is one of the most important crustacean species for the trawl fisheries developed along the GFCM geographical sub-area Northern Spain (GSA06). This resource is an important component of commercial landings in some ports of the Mediterranean Northern Spain and occasionally a target species of the trawl fleet, around 260 vessels, which operate on the upper slope. During the last years, a sharp increase in landings was observed, starting in 1998 and reaching the maximum value in 2000, followed by a decreasing trend during the period 2001-2004. During the period 2005-2010 stabilization in catches is observed with an average of 138 t for this period. In 2010 the annual landings of this species amounts 141 t in the whole area. Assessment Data The state of exploitation was assessed for the period 2001-2010 for the GFCM geographical sub-area Northern Spain (GSA06). VPA (Virtual Population Analysis) was performed from size composition of trawl catches (obtained from on board and on port monthly sampling) and official landings transforming length data to age data by slicing. Assessment Model Type: Age-structured Extended survivors analysis (XSA) Methodology VPA tuned with Catch per Unit of Effort (CPUE) from commercial fleet and abundance indices from MEDITS trawl surveys, was carried out applying the XSA method and FLR (Fisheries Library in R) over the period 2001-2010. Results PopulationThe Spawning Stock Biomass and Recruitment estimates for 2010 resulted as 165 t and 546 t, respectively. Fishing mortality ratesF mortalities (for trawls) resulted as: F 1-4 = 1.11, F 1-5 = 0.96 Assessment Model Type: Others Yield per Recruit (Y/R) Methodology A Y/R analysis based on the exploitation pattern resulting from the XSA model and population parameters for the entire period was carried out. Results F current = 1.11, F max =2.21, F 0.1 = 0.3, Y/R = 1.27 g Overall Assessment Results The stock is in overfishing status and low abundance. Exploitation is based on very young age classes, mainly 1 and 2 year old individuals, indicating a dependence on recruitments. Scientific Advice For management considerationReduce growth overfishing through Reduce the effort of trawl; Improve the fishing pattern of the trawl fleets. To avoid recruitment overfishing Reduce effort in trawl; Especial surveillance in the use of 40mm square/50 diamond mesh size in the cod end in trawl gears. Biological State and Trend Exploitation state: OverexploitedExploitation rate: High fishing mortality
Abundance level: Low abundance The results show a decreasing trend both in landings and total biomass of the stock from 2001 to 2004 and 2003 respectively. Landings, biomass and SSB values remain stabilized for the last 7 years with light fluctuations, although these values are low compared to 2001 (the highest in the series). F shows a decreasing trend from 2001 to 2004 but increasing in the 2005-2010 period. The oscillation found for this species is in agreement with other areas of the Mediterranean. Source of information Report of the Working Group on Stock Assessment of Demersal Species. FAO-GFCM Chania, Crete (Greece) 24-29 October 2011. 2011 FAO  . |
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