Fisheries and Resources Monitoring System

Blue and red shrimp - Northern Spain
Marine Resource  Fact Sheet
Stock status report 2021
Blue and red shrimp - Northern Spain
Fact Sheet Citation  
Aristeus antennatus - Northern Spain (GSA 6)
Owned byGeneral Fisheries Commission for the Mediterranean (GFCM) – More
Related observationsLocate in inventorydisplay tree map
FAO Names: en - Blue and red shrimp, fr - Crevette rouge, es - Gamba rosada

Fishery Indicators
Production: Landed Volume
Geographic extent of Blue and red shrimp - Northern Spain
Main Descriptors
Considered a single stock: Yes        Spatial Scale: Sub-Regional
Management unit: Yes        Reference year: 2019
Biological State and Trend
State & Trend Descriptors
Exploitation rateIn overexploitation (F/Fref = 6.67)Not applicable
Abundance levelRelatively low biomassNot applicable
FAO Categories
Exploitation stateOverfished

In overexploitation, with relatively low biomass.
[The GFCM methodology to provide stock status and management advice is described in the Appendix F of the Sixteenth Session of the Scientific Advisory Committee Report. See the Bibliography section.]
Habitat and Biology
Climatic zone: Temperate.   Bottom type: Soft bottom.   Depth zone: Slope (200 m - 1000 m).   Horizontal distribution: Neritic.   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

Stock assessment in the GFCM area of application is often conducted by management units, based on GSAs. This method does not ensure that the whole stock is assessed, since stocks may cover several different management units. In some cases, when there is scientific evidence of a stock spreading through different GSAs, as well as information on species from different GSAs, existing information is combined across GSAs. This is then defined as a “joint stock assessment of a shared stock”. The GFCM recommends that when scientific evidence of shared stocks exists, joint stock assessments should be attempted. A number of activities aimed at achieving a better definition of stock boundaries are currently being conducted at the GFCM level. [The State of Mediterranean and Black Sea Fisheries, 2016]

The trawl fleets fishing efforts in the ports were quite stable for the period studied with small variations of the number of vessels in the recent years. Vessels length was between 12-24 m. The gear used corresponded to a trawl net 60 and 100 longest rope. The vertical opening was between 1-3 m. The codend mesh size used was a squared 40 mm of mesh opening. The net was rigged two doors between 500-800 kg. Trawl fleet in the four ports do daily trips with a unique haul directed to the red shrimp, with a duration between 5-7 hours. The number of harbours with red shrimp fleets is 26 for the whole area, and the number of boats in this area is 189. Discards of the red shrimp are null. In 2019, landings were around 547 tonnes and total effort over 14 251 fishing days by year and CPUE medium, 38.4 kg/day.
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionLanded Volume 547tonnes2019
Landed Volume 620tonnes2018
Landed Volume 580tonnes2017
Landed Volume 649tonnes2016
Landed Volume 662tonnes2015
Landed Volume 593tonnes2014
Landed Volume 745tonnes2013
Landed Volume 789tonnes2012
Landed Volume 737tonnes2011
Landed Volume 647tonnes2010
Landed Volume 743tonnes2009
Landed Volume 730tonnes2008
Landed Volume 579tonnes2007
Landed Volume 354tonnes2006
Landed Volume 308tonnes2005
Landed Volume 577tonnes2004
Landed Volume 583tonnes2003
Landed Volume 723tonnes2002
Landed Volume 517tonnes2001
Landed Volume 444tonnes1999
Landed Volume 445tonnes1998
Landed Volume 618tonnes1997
Landed Volume 629tonnes1996

Size composition of commercial trawl catches by sex, official landings and data from MEDITS surveys (2000-2019). Growth parameters from L/W and Age/L relationships are from DCF (2013-2015). M vector is from ProdBiom (Abella et al 1997).
Assessment Model
Type:  Age-structured

SCAA (a4a, FLR), FLBRP package for Y/R analysis and Flash package for short-term forecast.
Overall Assessment Results

Stock biomass showed oscillations for the entire data series, with a general decreasing trend. Recruitment is also decreasing, F increased last year with fluctuations along the time series studied.
Scientific Advice

Reduce fishing mortality.
Management unit: Yes
Source of information
FAO. 2021. General Fisheries Commission for the Mediterranean. Report of the twenty-second session of the Scientific Advisory Committee on Fisheries, online, 22–25 June 2021. FAO Fisheries and Aquaculture Report No. 1347. Rome.  Click to open
Report of the Working Group on Stock Assessment of Demersal Species (WGSAD). Online, 18–23 January 2021.  Click to open
Stock assessment form for blue and red shrimp in GSA 6 (reporting year: 2020).  Click to open
FAO. 2020. The State of Mediterranean and Black Sea Fisheries 2020. General Fisheries Commission for the Mediterranean. Rome.  Click to open
FAO. 2016. The State of Mediterranean and Black Sea Fisheries. General Fisheries Commission for the Mediterranean. Rome, Italy.  Click to open
FAO General Fisheries Commission for the Mediterranean/Commission générale des pêches pour la Méditerranée. Report of the sixteenth session of the Scientific Advisory Committee. St. Julian’s, Malta, 17–20 March 2014/Rapport de la seizième session du Comité scientifique consultatif. Saint Julien, Malte, Malte, 17-20 mars 2014. FAO Fisheries and Aquaculture Report/FAO Rapport sur les pêches et l’aquaculture. No. R1102. Rome. 2015. 250 pp.  Click to open
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