Aquaculture Potentials of Estuarine and Marine Species, Polydactylus quadrifilis and Pomadasis jubelini at the Layo Experimental Aquaculture Station (Côte d’Ivoire)

Abstract

The experimentation for rearing of Polydactylus quadrifilis and Pomadasis jubelini fishes at the Layo's Experimental Aquaculture Station allowed to feed them with a food composed of 40% protein, supplemented with shrimp such as Penaeidae families (38, 4%), Palaemonidae (20%) and Aristeidae (19%). A mortality rate of 100% is observed in large specimens, while those of small size have shown high survival rates, ranging from 57%to 100%. Specific growth rates ranged from 0.9 to 2.8% for Polydactylus quadrifilis individuals and 1.1% to 2.7% for those of Pomadasis jubelini. The conversion index ranged from 1 to 2.46 for specimens of Polydactylus quadrifilis and from 0.9 to 2.2, concerning those of Pomadasis jubelini. The coefficients of variation stabilize between 11% and 17% for specimens of Polydactylus quadrfiflis, and the Pomadasis jubelini individuals have theirs stabilize between 10% and 16%. These species have aquaculture potentials to develop through a control of their breeding conditions. Problem statement and purposeIn Ivory Coast, there is no brackish water and marine fish breeded by local aquaculturists. They breed only the inland water fish, as Orechromis niloticus and Clarias. So this present study proposes to attempt the cultivation of other species from brackish and marine with aquaculture potential (Konan, 2013). Threadfin, Polydactylus quadrifilis and the white carp, Pomadasis jubelini, are tested in order to provide to aquaculturists, new productive local species and contribute to ensuring the population, self-sufficiency in fish proteins. This first phase consists in characterizing the conditions of captivity of Polydactylus quadrifilis and Pomadasis jubelini in the breeding structures of the experimental aquaculture station of the Oceanology Research Center, atLayo (Côte d'Ivoire).