The dynamics of unexploited population of Corbula trigona (Bivalvia : Corbulidae) in a brackish-water lagoon, Cote d'Ivoire

Population dynamics of the bivalve Corbula trigona were studied in a bracki shwater environment of the Tendo Lagoon in Cote d'Ivoire. By means of FiSAT software 12 consecutive months length frequency data with a pooled sample size of 10971 specimens were analysed. The seasonalized von Bertalanffy gro wth parameters were L-infinity = 21.5 mm, K = 0.49.y(-1), C = 0.39 and WP = 0.46. The seasonalized catch curve yielded an instantaneous total mortalit y coefficient Z of 1.41.y(-1) Recruitment into the population was year-roun d with a major peak occurring between September and November.