Propagation of the Manila clam (Tapes semidecussatus) in the effluent of fish aquaculture ponds in Eilat, Israel

The Manila clam, Tapes semidecussatus Reeve (Bivalvia, Veneridae), was reared in the effluent of marine fish aquaculture ponds in Israel. Despite relatively high water temperatures during the summer (27-31°C) and extremely high salinity throughout the year (41±1 ppt), the clams grew from 1.90±0.38 g to 18.35±4.45 g in 13 months, with mortality rates of only 10-12%. In addition, gametogenesis occurred during much of the year. Although reared in conditions much different than those where it is found naturally, T. semidecussatus acclimated to local conditions and appears to have excellent potential for intensive mariculture in Israel.