This study describes the larval development of the Venerid bivalve mollusc Anomalocardia brasiliana “berbigão” under laboratory conditions. The clams were collected at Mangue Seco beach (Pernambuco, northeastern Brazil) and transferred to the laboratory where their gametes were released spontaneously. Trochophore and D larvae were identified in the hatchery from 18 to 24 h afterward. Dlarvae had an average length (L) of 71.9 µm, remaining at this stage until the 5th day, when first umbo veligers appeared (L = 115.9 µm). Pediveliger larvae (L = 183.2 µm) were observed after the 9th day. Within 15 days larvae reached juvenile stage (L = 282.0 µm) with growth lines in the shells. Survival was 58.8%, 20%, 60%, and 100% for D larvae, umbo veligers, pediveligers, and juveniles, respectively. To our knowledge, this is the first report of the hatchery rearing for A. brasiliana and serves as a basis for future research and culture of this species.
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Vol. 35 • No. 1