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European anchovy - Gabon, Congo, Democratic Republic of the Congo and Angola
Fact Sheet Title  Fact Sheet
CECAF Scientific advice 2016
European anchovy - Gabon, Congo, Democratic Republic of the Congo and Angola
Fact Sheet Citation  
Anchois (Engraulis encrasicolus) - stock sud (Gabon, Congo, République démocratique du Congo et Angola)
Owned byFood and Agriculture Organization (FAO) – ownership
ident Blockident Blockdisplay tree map
 
Species List:
Species Ref: en - European anchovy, fr - Anchois, es - Boquerón, ru - Анчоус европейский

Fishery Indicators
Production: Catch
ident Block European anchovy - Gabon, Congo, Democratic Republic of the Congo and Angola
Aq Res
Biological Stock: Yes         Value: Regional
Management unit: Yes        Reference year: 2012
 
 
Aq Res State Trend
Aq Res State Trend
Aq Res State Trend Aq Res State Trend
Aq Res State TrendFcur/F0.1 = 44% ; Fcur/FMSY = 40%Not applicable
Aq Res State TrendBcur/B0.1 = 127%Not applicable
Aq Res State Trend
Aq Res State TrendNot fully exploited

Fcur/F0.1: Ratio between the observed fishing mortality coefficient during the last year of the series and F0.1.
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.
Unless otherwise indicated, the indicators were based on the Schaefer dynamic production stock assessment model.
Habitat Bio
Climatic Zone: Tropical.   Depth Zone: Coastal (0 m - 50 m); Shelf (50 m - 200 m); Slope - Upperslope (200 m - 500 m).   Horizontal Dist: Neritic; Oceanic.   Vertical Dist: Pelagic.  

Geo Dist
Geo Dist: Shared between nations

Water Area Overview
Spatial Scale: Regional

Water Area Overview
Aq Res Struct
Biological Stock: Yes
Exploit
 
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 423tonnes1995
Catch 529tonnes1996
Catch 479tonnes1997
Catch 642tonnes1998
Catch 383tonnes1999
Catch 401tonnes2000
Catch 356tonnes2001
Catch 1082tonnes2002
Catch 398tonnes2003
Catch 399tonnes2004
Catch 394tonnes2005
Catch 614tonnes2006
Catch 554tonnes2007
Catch 981tonnes2008
Catch 100tonnes2009
Catch 462tonnes2010
Catch 924tonnes2011
Catch 993tonnes2012
Bio Assess
 

Assessment year: 2014
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”.
Assess Models
Type:  Biomass-aggregated
Schaefer logistic production model

Only the Congo has a series of anchovy catch data for the southern stock (Angola, the Congo, the Democratic Republic of the Congo, and Gabon) from 1998 to 2012. The other countries have sporadic data. For the model fit, the Working Group used the total catch and the abundance index, and CPUE from the artisanal fishery in the Congo. Initial parameters for the assessment model were: - Engraulis encrasicolus: r = 1.94, K = 1 500 tonnes and BI/K = 65 percent.
Results

Even if the results show that the stock is not fully exploited in its current state, the Working Group notes that only the Congo has data for this species and that there is a lack of data from the other three countries, although anchovy appears to be present in the whole subregion. This situation can affect the results of the assessment. The model results should therefore be considered with caution.
Sci Advice

As a precautionary measure, catch level should not exceed the average catches of the 3 last years (790 tonnes). Can sustain an increase in exploitation.
Management
Management unit: Yes
Sources
 
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 Small Pelagic Fish – Subgroup South. Pointe Noire, Congo, 17–23 March 2014. Rapport du Groupe de travail FAO/COPACE sur l’évaluation des petits poissons pélagiques – Sous-groupe Sud. Pointe Noire, Congo, 17-23 mars 2014. CECAF/ECAF Series / COPACE/PACE Séries No. 15/75 Rome, FAO. 157 pp.  Click to openhttp://www.fao.org/3/a-i5040b.pdf
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