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| Fact Sheet Title Fact Sheet |
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| Sea catfishes (Arius spp) - Senegal and Gambia |
 | Machoirons (Arius spp) - Sénégal et Gambie |
| | Data Ownership | | This document provided, maintained and owned by Food and Agriculture Organization (FAO) , is part of CECAF Stock Status Reports data collection. |
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| ident Block | ident Block | | | | Species List: | | Species Ref: en - Smoothmouth sea catfish, fr - Mâchoiron banderille, es - Bagre bocalisa |
Fishery IndicatorsProduction: Catch Arius gambiensis Arius mercatoris |
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| ident Block Sea catfishes (Arius spp) - Senegal and Gambia
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| fao Sub Div |
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| 34.3.12 | Atlantic, East central / 34.3.12 |
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| Aq Res | Biological Stock: Yes
Value: Regional
Management unit: Yes
Reference year: 2012
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| Considered a management unit: An aquatic resource or fishery is
declared as [Fishery] Management Unit if it is
effectively the focus for the application of selected
management methods and measures, within the broader
framework of a management system. According to the FAO
Glossary for Responsible Fishing, "a Fishery Management
Unit (FMU) is a fishery or a portion of a fishery
identified in a Fishery Management Plan (FMP) relevant
to the FMP's management objectives." FMU's may be
organised around fisheries biological, geographic,
economic, technical, social or ecological dimensions ,
and the makeup and attribute of a fishery management
unit depends mainly on the FMP's management
objectives. |
| Jurisdictional distribution: Jurisdictional qualifier (e.g.
"shared", "shared - highly migratory") of the aquatic
resource related with its spatial distribution. |
| Environmental group: Classification of the aquatic
resource according to the environmental group (e.g.
pelagic invertebrate, or demersal fish) to which the
species belong. |
| Reference Year: The Reference Year is the last year considered in the stock assessment and/or fishery status. |
| | | | | | Aq Res State Trend 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 Bio Climatic Zone: Tropical. Bottom Type: Soft bottom muddy or muddy-sand. Depth Zone: Coastal (0 m - 50 m); Shelf - Uppershelf (up to 100 m). Horizontal Dist: Littoral. Vertical Dist: Demersal/Benthic. Geo Dist Geo Dist: Shared between nations Water Area Overview  | | Water Area Overview Sea catfishes (Arius spp) - Senegal and Gambia
| fao Sub Div | 34.3.12: Atlantic, East central / 34.3.12 |
| | | | | | Water Area Overview
| Exclusive Economic Zone Areas (EEZ) | SEN: Senegal | | GMB: Gambia |
| | | | | | Water Area Overview |
Water Area OverviewSea catfishes (Arius spp) - Senegal and Gambia Aq Res Struct Biological Stock: Yes The Arius spp. catfish group consists of the following species: Arius heudolotii, Arius gambiensis and Arius mercatoris and are distributed across the continental shelf from The Gambia to Senegal. Catfishes are thus considered to be a single stock and the Working Group decided to assess this stock as a single management unit. Exploit Fishery Indicators | Type | Measure | Value | Unit | Time period |
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| Production | Catch | 6950 | tonnes | 1990 | | Catch | 2671 | tonnes | 1991 | | Catch | 5133 | tonnes | 1992 | | Catch | 3643 | tonnes | 1993 | | Catch | 3482 | tonnes | 1994 | | Catch | 3293 | tonnes | 1995 | | Catch | 1949 | tonnes | 1996 | | Catch | 7671 | tonnes | 1997 | | Catch | 7482 | tonnes | 1998 | | Catch | 2685 | tonnes | 1999 | | Catch | 4146 | tonnes | 2000 | | Catch | 6329 | tonnes | 2001 | | Catch | 5510 | tonnes | 2002 | | Catch | 5153 | tonnes | 2003 | | Catch | 6885 | tonnes | 2004 | | Catch | 14822 | tonnes | 2005 | | Catch | 10120 | tonnes | 2006 | | Catch | 7805 | tonnes | 2007 | | Catch | 7499 | tonnes | 2008 | | Catch | 7594 | tonnes | 2009 | | Catch | 6788 | tonnes | 2010 | | Catch | 6233 | tonnes | 2011 | | Catch | 5657 | tonnes | 2012 |
Bio Assess Assessment year: 2013 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 dynamic production model The data used for the model fit were the total catches of catfishes in The Gambia and Senegal. The CPUEs of the ice canoes of the Senegalese artisanal fleet were used to apply the model. Sci Advice As a precaution the Working Group recommends not to increase the fishing mortality above the 2012 level. Management Management unit: Yes Sources 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.  http://www.fao.org/3/I5301Bi/i5301bi.pdfFAO. 2016b. Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup North. Fuengirola, Spain, 18–27 November 2013. / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sousgroupe Nord. Fuengirola, Espagne, 18-27 novembre 2013. CECAF/ECAF Series/COPACE/PACE Séries. No. 15/77. Rome, Italy/Italie. http://www.fao.org/3/a-i5114b.pdf |
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