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Red Pandora - Côte d'Ivoire, Ghana, Togo and Benin
Marine Resource  Fact Sheet
CECAF Scientific advice 2016
Red Pandora - Côte d'Ivoire, Ghana, Togo and Benin
Fact Sheet Citation  
Pageot (Pagellus bellotti) - Côte d'Ivoire, Ghana, Togo et Bénin
Owned byFood and Agriculture Organization (FAO) – More
Related observationsLocate in inventorydisplay tree map
 
Species:
FAO Names: en - Red pandora, fr - Pageot à tache rouge, es - Breca chata

Fishery Indicators
Production: Catch
Geographic extent of Red Pandora - Côte d'Ivoire, Ghana, Togo and Benin
Main Descriptors
Considered a single stock: Yes        Spatial Scale: Regional
Management unit: Yes        Reference year: 2010
 
 
Biological State and Trend
State & Trend Descriptors
PartnerFIRMS
Exploitation rateFcur/F0.1 = 158%; Fcur/FMSY = 142%Not applicable
Abundance levelBcur/B0.1 = 46% ; Bcur/BMSY = 51%Not applicable
FAO Categories
Exploitation stateOverexploited

Fcur/F0.1: Ratio between the observed fishing mortality coefficient during the last year of the series and F0.1.
Fcur/FSYcur: Ratio between the observed fishing mortality coefficient during the last year of the series and the coefficient that would give a sustainable yield at the current biomass level.
Fcur/FMSY: Ratio between the observed fishing mortality coefficient during the last year of the series and the coefficient that would give a maximum sustainable yield over the long term.
Bcur/B0.1: Ratio between the estimated biomass for the last year and the biomass corresponding to F0.1.
Bcur/BMSY: Ratio between the estimated biomass for the last year and the biomass corresponding to FMSY.
Unless otherwise indicated, the indicators were based on the Schaefer dynamic production stock assessment model.
Habitat and Biology
Climatic zone: Tropical.   Bottom type: Soft bottom clean sand; Soft bottom muddy or muddy-sand.   Depth zone: Coastal (0 m - 50 m); Shelf (50 m - 200 m).   Vertical distribution: Demersal.  

Geographical Distribution
Jurisdictional distribution: Shared between nations

Water Area Overview
Spatial Scale: Regional

Geo References
Resource Structure
Considered a single stock: Yes


The Working Group considered a single stock for this study zone.
Exploitation
 
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 6133tonnes1990
Catch 5646tonnes1991
Catch 9084tonnes1992
Catch 8128tonnes1993
Catch 5913tonnes1994
Catch 4728tonnes1995
Catch 7895tonnes1996
Catch 7755tonnes1997
Catch 7471tonnes1998
Catch 11166tonnes1999
Catch 3443tonnes2000
Catch 3588tonnes2001
Catch 3271tonnes2002
Catch 3717tonnes2003
Catch 5175tonnes2004
Catch 8786tonnes2005
Catch 8173tonnes2006
Catch 7257tonnes2007
Catch 5010tonnes2008
Catch 4038tonnes2009
Catch 4233tonnes2010
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 period 1990-2010, a long time series of data on catch and effort of the industrial and artisanal fleets were made available to the Working Group, with the exception of the Ivorian artisanal fleet. For data on catch of Pagellus bellottii the Working Group used the total catch series for 1990-2010. The missing data for 2007 were estimated from the total catches of the last three years (2004-2006). The Working Group considered that this series was the one which best reflected the stock abundance trends. The initial input parameters were, r (intrinsic growth rate) = 0.50; K (initial biomass) = 150 000 tonnes and BI/K (biomass of the stock at the beginning of the data series, compared with the initial biomass) = 40 percent.
Assessment Model
Type:  Size-structured
Length Cohort Analysis (LCA)

To apply the LCA model, the Working Group used the length frequency data of the species/group of species of Côte d’Ivoire from 2006 to 2010. Figure 3.6.4a of FAO, 2015 shows the distribution of the length frequencies for this species. Apart from 2007 when the fishes caught are large in size, most of the fishes taken in 2006, 2008, 2009 and 2010 are between12 and 22 cm in length (Figure 3.6.1 of FAO, 2015). An extrapolation coefficient (total quantity of catches/total quantity of the sample) was applied to bring the length frequencies to the total catch of the zone. The FiSAT II software developed by the FAO was then used to determine the growth parameters (L∞, K, and M) for all the species. The parameters of the weight-length ratio (a, b and r2) were obtained from the FishBase database. The final matrix involves individuals of between 8 and 60 cm in length.
Yield per Recruit Analysis (Y/R)
Overall Assessment Results

The fit of the model to the CPUE series of the Côte d’Ivoire industrial fleet was satisfactory. The assessment results are given in Table and Figure 3.6.4 of FAO, 2015 [see also "Biological state and trend"]. They indicate that the stock is overexploited in terms of biomass and fishing mortality in relation to the target points B0.1 and F0.1. After the necessary fittings, the analysis shows that the LCA model is in keeping with the results of the global model, that the stock is overexploited. Nevertheless, the overexploitation resulting from the model should be viewed with caution. The results indicate that the stock is overexploited both in terms of biomass and fishing mortality. With respect to the results of the previous assessment carried out in 2008, it appears the stock situation has slightly improved.
Scientific Advice

Taking into account the results obtained in the assessment and the trends in CPUE, the Working Group recommends reducing effort on this stock and no longer issuing new licences for this fishery. The Working Group also recommends that catches should not be greater than the average of the last three years which is estimated at 4 000 tonnes.
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
Bibliography
 
All references to figures, tables and bibliography in the text are found within the source of information.
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