Fisheries and Resources Monitoring System

Dentex - São Tomé e Príncipe
Marine Resource  Fact Sheet
CECAF Scientific advice 2016
Dentex - São Tomé e Príncipe
Fact Sheet Citation  
Dorade (Dentex spp) - Sao Tomé-et-Principe
Owned byFood and Agriculture Organization (FAO) – More
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FAO Names: en - Dentex nei, fr - Dentés nca, es - Dentones y samas nep, ru - Зубаны

Fishery Indicators
Production: Catch
Geographic extent of Dentex - São Tomé e Príncipe
Main Descriptors
Considered a single stock: Yes        Spatial Scale: National
Management unit: Yes        Reference year: 2010
Biological State and Trend
State & Trend Descriptors
FAO Categories
Exploitation stateUncertain/Not assessed
Habitat and Biology
Climatic zone: Tropical.   Depth zone: Shelf - Deepshelf (100 m - 200 m).   Vertical distribution: Demersal.  

Geographical Distribution
Jurisdictional distribution: National

Water Area Overview
Spatial Scale: National

Geo References
Resource Structure
Considered a single stock: Yes

Dentex spp. is not important in the catches in Nigeria and Cameroon. Therefore the Working Group considered only the stock in Sao Tome & Principe.
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 148tonnes2001
Catch 153tonnes2002
Catch 160tonnes2003
Catch 166tonnes2004
Catch 168tonnes2005
Catch 173tonnes2006
Catch 178tonnes2007
Catch 183tonnes2008
Catch 188tonnes2009

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

The Working Group used the total catches of Dentex spp. for Sao Tome & Principe from 2001 to 2010 and CPUE (artisanal – number of fishermen) for the same number of years.
Overall Assessment Results

The model was attempted but rejected because the CPUE used was not in the appropriate format and did not provide a satisfactory fit.
Scientific Advice

The Working Group was not in a position to recommend any specific management measure. Nevertheless, it recommends proceeding with an indepth analysis of the data before the next Working Group meeting.
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 open
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 open
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