Fisheries and Resources Monitoring System

Atlantic horse mackerel - Northwest Africa
Marine Resource  Fact Sheet
CECAF Scientific advice 2016
Atlantic horse mackerel - Northwest Africa
Fact Sheet Citation  
Chinchard blanc (Trachurus trachurus) - Afrique nord-occidentale
Owned byFood and Agriculture Organization (FAO) – More
Related observationsLocate in inventorydisplay tree map
FAO Names: en - Atlantic horse mackerel, fr - Chinchard d'Europe, es - Jurel, ru - Ставрида обыкновенная

Fishery Indicators
Production: Catch
Geographic extent of Atlantic horse mackerel - Northwest Africa
Main Descriptors
Considered a single stock: Yes        Spatial Scale: Regional
Management unit: Yes        Reference year: 2014
Biological State and Trend
State & Trend Descriptors
Exploitation rateFcur/F0.1 = 104% ; Fcur/FMSY = 93% ;Not applicable
Abundance levelBcur/B0.1 = 105% ; Bcur/BMSY = 115%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/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: Temperate; Tropical.   Depth zone: Shelf (50 m - 200 m); Slope (200 m - 1000 m); Abyssal ( >1000m).   Horizontal distribution: Neritic; Oceanic.   Vertical distribution: Pelagic.  

Geographical Distribution
Jurisdictional distribution: Shared between nations

Water Area Overview
Spatial Scale: Regional

Geo References
Resource Structure
Considered a single stock: Yes
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 45069tonnes1990
Catch 22041tonnes1991
Catch 36501tonnes1992
Catch 48237tonnes1993
Catch 56172tonnes1994
Catch 71596tonnes1995
Catch 47766tonnes1996
Catch 50498tonnes1997
Catch 85010tonnes1998
Catch 83157tonnes1999
Catch 68180tonnes2000
Catch 69949tonnes2001
Catch 41362tonnes2002
Catch 64057tonnes2003
Catch 169350tonnes2004
Catch 120810tonnes2005
Catch 92391tonnes2006
Catch 63383tonnes2007
Catch 119679tonnes2008
Catch 119565tonnes2009
Catch 110483tonnes2010
Catch 67620tonnes2011
Catch 58560tonnes2012
Catch 86377tonnes2013
Catch 104305tonnes2014

Assessment year: 2015
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
Overall Assessment Results

The fit is satisfactory (The Pearson correlation coefficient was 76 percent).
Scientific Advice

An increase in catch and effort is observed in 2014 compared to 2013 for both of the Trachurus species. <i>T. trecae</i> remains overexploited whereas <i>T. trachurus</i> is fully exploited. Given the mixed nature of this fishery and the results of the projections, the Working Group, as a precautionary approach, recommends to reduce both effort and catch for the two species.
Management unit: Yes
Source of information
FAO. 2016a. 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. 2016b. Report of the FAO Working Group on the Assessment of Small Pelagic Fish off Northwest Africa. Casablanca, Morocco, 20–25 July 2015 / Rapport du Groupe de travail de la FAO sur l’évaluation des petits pélagiques au large de l’Afrique nord-occidentale. Casablanca, Maroc, 20-25 juillet 2015. FAO Fisheries and Aquaculture Report/FAO Rapport sur les pêches et l’aquaculture No. 1122. Rome, Italy/Italie.  Click to open
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