Fisheries and Resources Monitoring System

EspañolFrançais
Benguela hake - Angola
Marine Resource  Fact Sheet
CECAF Scientific advice 2016
Benguela hake - Angola
Fact Sheet Citation  
Merlu (Merluccius polli) - Angola
Owned byFood and Agriculture Organization (FAO) – More
Related observationsLocate in inventorydisplay tree map
 
Species:
FAO Names: en - Benguela hake, fr - Merlu d'Afrique tropicale, es - Merluza de Benguela, ru - Мерлуза бенгальская

Fishery Indicators
Production: Catch
Geographic extent of Benguela hake - Angola
Main Descriptors
Considered a single stock: Yes        Spatial Scale: National
Management unit: Yes        Reference year: 2010
 
 
Biological State and Trend
State & Trend Descriptors
PartnerFIRMS
Exploitation rateFcur/F0.1 = 47%; Fcur/FMSY = 42%Not applicable
Abundance levelBcur/B0.1 = 165% ; Bcur/BMSY = 181%Not applicable
FAO Categories
Exploitation stateFully exploited

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.   Depth zone: Shelf (50 m - 200 m); Slope (200 m - 1000 m).   Vertical distribution: Demersal.  

Geographical Distribution
Jurisdictional distribution: National

Water Area Overview
Spatial Scale: National

Geo References
Resource Structure
Considered a single stock: Yes


Only Angola provided some data. The Working Group only considered one stock.
Exploitation
 
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 370tonnes1995
Catch 456tonnes1996
Catch 360tonnes1997
Catch 1032tonnes1998
Catch 516tonnes1999
Catch 360tonnes2000
Catch 1034tonnes2001
Catch 1207tonnes2002
Catch 2518tonnes2003
Catch 6107tonnes2004
Catch 4308tonnes2005
Catch 4433tonnes2006
Catch 4183tonnes2007
Catch 4756tonnes2008
Catch 4393tonnes2009
Catch 4675tonnes2010
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 catches of Merluccius polli and the CPUE of the industrial trawlers of Angola. The initial input parameters were: r = 1.00; K =30 000 tonnes; BI/K = 40 percent.
Overall Assessment Results

The results of the assessment indicate that the stock of Merluccius polli appears to be fully exploited because the effort has increased very rapidly over the last few years. Since 2005, this species which was taken as bycatch has become a targeted species.
Scientific Advice

A general reduction in fishing effort should be undertaken. Special attention should also be given to the problem of bycatch
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/I5301Bi/i5301bi.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
powered by FIGIS  © FAO, 2020
Powered by FIGIS
crawl