Survey Compared of the Fishing of Minor Tuna by the Double Dragnets and the Dugouts in the Exclusive Economic Zone (EEZ) of the Ivory Coast

摘要

Survey Compared of the Fishing of Minor Tuna by the Double Dragnets and the Dugouts in the Exclusive Economic Zone (EEZ) of the Ivory CoastThe both units of peaches (double dragnets and dugouts) that practice in Ivory Coast have captured 168,833.3 tons of minor tuna. Six species have been met in the landings of the dragnets pelagic and Scomberomorus tritor (79%) was the dominant of all (Sarda sarda, Auxis thazard, Euthynnus alletteratus, Scomber Japonicus and Acanthocybium solandri). On the other hand, the level of the dugouts, Auxis thazard (58%) and Euthynnus alletteratus (40%) were abounding. The big sizes have been captured by the contraptions netting nets, and the small sizes, by the dragnets pelagic. At the species it is the opposite that is observed itself The Acanthocybium solandri effort of fishing was pronounced during the cold periods with elevated captures and many varieties of species, the catch per unit effort remained weak. During all the year, the species captured massively in cold season were Euthynnus alletteratus, Auxis thazard, Acanthocybium solandri, Scomber japonicus and Sarda sarda, exploited by the dugouts; while the one in hot season was Scomberomorus tritor captured by the double dragnets.