Fisheries and Resources Monitoring System

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Southern pink shrimp - Guinea
Marine Resource  Fact Sheet
CECAF Scientific advice 2016
Southern pink shrimp - Guinea
Fact Sheet Citation  
Crevette rose du sud (Penaeus notialis) - Guinée
Owned byFood and Agriculture Organization (FAO) – More
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Species:
FAO Names: en - Southern pink shrimp, fr - Crevette rose du Sud, es - Camarón rosado sureño

Fishery Indicators
Production: Catch
Geographic extent of Southern pink shrimp - Guinea
Main Descriptors
Considered a single stock: Yes        Spatial Scale: National
Management unit: Yes        Reference year: 2008
 
 
Biological State and Trend
State & Trend Descriptors
Aq Res State Trend
Exploitation stateUncertain/Not assessed
Habitat and Biology
Climatic zone: Tropical.   Bottom type: Soft bottom muddy or muddy-sand.   Depth zone: Coastal (0 m - 50 m); Shelf - Uppershelf (up to 100 m).   Horizontal distribution: Littoral.   Vertical distribution: Demersal/Benthic.  

Geographical Distribution
Jurisdictional distribution: National

Water Area Overview
Spatial Scale: National

Geo References
Resource Structure
Considered a single stock: Yes
Exploitation
 
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 429tonnes1995
Catch 435tonnes1996
Catch 668tonnes1997
Catch 525tonnes1998
Catch 486tonnes1999
Catch 877tonnes2000
Catch 950tonnes2001
Catch 912tonnes2002
Catch 576tonnes2003
Catch 691tonnes2004
Catch 355tonnes2005
Catch 954tonnes2006
Catch 1255tonnes2007
Catch 232tonnes2008
Assessment
 

Assessment year: 2011
The CECAF Working Groups have adopted the following Biological Reference Points (BRPs):
- Limit Reference points: BMSY and FMSY
- Target Reference Points: B0.1 and F0.1
Stock status is assigned based on current estimates of fishing mortality (Fcur) and biomass (Bcur) relative to these target and limit reference points (Bcur/BMSY, Fcur/FMSY, Bcur/B0.1, Fcur/F0.1). The results from the stock assessment of this stock are found under the “Biological state and trend section”.
Assessment Model
Type:  Biomass-aggregated
Schaefer dynamic production model

For the catch data series, the Working Group used the series of total catch estimated for the country, for the period 1995 to 2008 (shrimpers and other trawlers). For the abundance index, the CPUE series from the Guinean shrimp trawl fleet was used. The Working Group considered that this series best reflects the trends in abundance of Penaeus notialis in Guinea.
Overall Assessment Results

The fit of the model to the data is not acceptable, and therefore, no conclusions can be made based on the model results. The trends for observed and predicted CPUE reveal strong fluctuations and inconsistencies with the catches, and a decline in stock abundance in the three last years. Doubts were raised about the fishing strategy. There are strong differences in the results from the last Working Group. Given the uncertainties about the exploitation of this stock, the assessment was not accepted.
Scientific Advice

Not to exceed the 300 tonne level until new information is made available to the Working Group
Management
Management unit: Yes
Source of information
 
FAO. 2016. Fishery Committee for the Eastern Central Atlantic, Report of the seventh session of the Scientific Sub-Committee, Tenerife, Spain, 14–16 October 2015 / Comité des pêches pour l’Atlantique Centre-Est Rapport de la septième session du Sous-Comité scientifique. Tenerife, Espagne 14-16 octobre 2015. FAO Fisheries and Aquaculture Report / FAO Rapport sur les pêches et l’aquaculture No. 1128. Rome, Italy.  Click to openhttp://www.fao.org/3/a-i5301b.pdf
FAO. 2015. Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup South. Accra, Ghana, 15–24 November 2011 / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sous-groupe Sud. Accra, Ghana, 15-24 novembre 2011. CECAF/ECAF Series/COPACE/PACE Séries. No. 15/76. Rome, Italy/Italie.  Click to openhttp://www.fao.org/3/a-i5138b.pdf
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