Biological State and Trend
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: Hard rocky bottom. Depth zone: Shelf (50 m - 200 m). Horizontal distribution: Neritic. Vertical distribution: Demersal.
Geographical Distribution
Jurisdictional distribution: National
Resource Structure
Considered a single stock: Yes
The Garoupa (Cephalopholis taeniops) is a demersal species fished in Cape Verde waters and is thus considered as a separate stock.
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
The Working Group used the total catch series of the species (Cephalopholis taeniops) for the period 1996 to 2009. The abundance indices used were the CPUE of the artisanal lines (kg/trip). The initial input parameters were, r (intrinsic growth rate)= 1.50; K (initial biomass) = 1 000 tonnes and BI/K (biomass of the stock at the beginning of the data series, compared with the initial biomass) = 50 percent.
Overall Assessment Results
The model provided a satisfactory fit. The results of the assessment are consistent with the last assessment. (Benin 2005). They indicate that the stock of Garoupa (Cephalopholistaeniops) is fully exploited.
Scientific Advice
As a precautionary approach fishing effort should not exceed the current level and total catch should not exceed the average of the last three years (240 tonnes).
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.
http://www.fao.org/3/I5301Bi/i5301bi.pdfFAO. 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.
http://www.fao.org/3/a-i5138b.pdf
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