Contribution à L’inventaire des Gastéropodes Marins Issus de la Pêche Artisanale et Industrielle de la Côte d’Ivoire

Abstract

For better management of marine gastropods in the Ivorian Exclusive Economic Zone (ZEE), an inventory of the species landed in Abidjan has been carried out. Sampling was done on catches from industrial and artisanal fisheries. Three sites located in Abidjan respectively at the fishing port, in Zimbabwe and in Abobo Doumé were visited during the period from January 2016 to January 2018. At the end of this study, 2622 individuals were collected. Species identification was based on the identification method proposed by Gaillard (1987), Fischer et al (1981), and Marche-Marchad (1975). The taxonomic names (scientific, French and English) were verified using the World Taxonomy Register of Marine Species called "World Register Marine Species". A total of eleven species divided into seven families (Cassidae, Melongenidae, Muricidae, Naticidae, Ranellidae, Tonnidae and Volutidae) have been identified. The volutidae family includes three landed species: Cymbium glans, Cymbium souliei and Cymbium tritoni. In this family, the species Cymbium glans and Cymbium souliei were the most frequent (frequency of occurrence greater than 50%). This family plays an important role in the trade of marine gastropods of the Ivorian fishery.

Reproductive performance of Archachatina marginata bred on substrates amended with oyster shell powder and substrates amended with pig bone powder

“…The snail uses calcium to build its shell and to calcify its eggs. This mineral is therefore essential not only in the preparation of diets, but also in breeding substrates (Kouassi et al, 2007;Kouassi et al, 2014;Aman et al, 2018). In fact, this mollusc draws around 40% of its nutrients from the soil in which it lives, transcutaneously via its pedal sole (Jess, 1989).…”