Habitat and Biology
Bottom type: Unspecified. Depth zone: Unspecified. Horizontal distribution: Unspecified. Vertical distribution: Unspecified.
Jurisdictional distribution: Unspecified
Considered a single stock: No
The continental shelves of Guinea-Bissau,Guinea and Sierra Leone are characterized bycoastal fish assemblages of croakers principally located in the nutrient-rich estuarine and inshoreareas.
Marine resources of the Gulf of Guinea aremainly exploited by Côte d'Ivoire, Ghana, Togo,Benin, Nigeria, Cameroon and EquatorialGuinea, among others. Multi-species fisheries arecommon in the Gulf of Guinea. Small pelagicresources are exploited mainly by artisanal andsemi-industrial purse-seine in Côte d'Ivoire,Ghana, Togo and Benin and exclusively bysmall-scale fisheries in Nigeria and Cameroon.Coastal demersal resources are composed ofsciaenids (exploited by small-scale and semiindustrialfisheries in Nigeria, Benin, Togo andCameroon), groupers and snappers (fished inTogo and Ghana with hook-and-lines inuntrawlable areas), and sparids (Côte d'Ivoire andGhana). The white shrimp resources off Nigeriaand Cameroon are fished exclusively by artisanalfisheries while pink shrimp is exploited bytrawlers of the semi-industrial fishery. Penaeidshrimps in Togo and Benin and in Côte d'Ivoireare caught in lagoon fisheries. The offshoredemersal resources of Ghana and Côte d'Ivoireare made up of sparids along with the slopecommunity, while the offshore demersalresources of Nigeria and Cameroon are primarilydrift fish (Arioma
spp.) and redfishes(Scorpaenidae).
Biological State and Trend
The exploitation rate applied to cuttlefish stocksin Guinea has been increasing since the 1990sand by 2001 with a catch of 5800t the stockswere considered to be overexploited (FAO,2003c).
Southern pink shrimp in Guinea and Sierra Leone
Current annual production of southern pinkshrimp in Guinea and Sierra Leone is around2 000t. The species is considered moderatlyexploited in Sierra Leone whereas in Guinea thespecies is considered overexploited (FAO,2003c).
Demersal species in the Gulf of Guinea
Trawl surveys carried out on the Western Gulf ofGuinea continental shelf by the RV Dr. FridtjofNansen have shown that between 1999 and 2001the estimated biomass of demersal resourcesvaried somewhat in the period from 17 500t to39 500t. In the Gulf of Guinea, from Ivory Coastto Cameroon the potential of shrimps wereestimated at 10 000t, and stocks were consideredhighly exploited (FAO, 1999).Demersal resources were found to be either fullyor overexploited (FAO, 2004a, b). Due to inconsistencies in the input data, the CECAFDemersal Working Group recommended that aprecautionary approach, avoiding any increase infishing effort, should be adopted for all thedemersal species in the Gulf of Guinea (FAO,2003c, 2004 a, b).
Small pelagic species, west and central Gulf of Guinea
Small pelagic species (sardinellas, mackerels andanchovies) are important but unstable resourcesin the Western Gulf of Guinea shared by Côted'Ivoire, Ghana, Togo, and Benin which furthercomplicates the management of the fisheriesexploiting them. Potentials of small pelagic in thewest and central Gulf of Guinea have beenestimated at 330 000t and seem to be fullyexploited. Many countries have not developedappropriate database and research structures toevaluate the state of the stocks and theirexplotation.
Source of information
FAO Marine Resources Service, Fishery Resources Division. “Review of the state of world marine fishery resources” FAO Fisheries Technical Paper.
No. 457. Rome, FAO. 2005. 235p. ftp://ftp.fao.org/docrep/fao/007/y5852e/Y5852E04.pdf
The bibliographic references are available through the hyperlink displayed in "Source of Information".
“Rapport du Troisieme Groupe de travail CNROP Nouadhibou, Mauritanie, 20-26 novembre 1993.” FAO 1995 CECAF/ECAF SERIES 95/60 FAO.