Development, Growth and Survival of Larvae of the Fighting Conch Strombus Pugilis L. (Mollusca, Gastropoda) in the Laboratory
Abstract:The development, growth and survival of Strombus pugilis (Linné, 1758) larvae were studied over a period of 31 d in laboratory culture. Experiments were conducted at 29° ± 1°C. Veligers were reared at 200 larvae L−1 in 4-L containers. Larvae were fed with the algae Tetraselmis suecica at 1000 cells L−1. S. pugilis larvae have 1.5 whorls at hatching, the veligers are competent for metamorphosis in 30 to 31 d. Nineteen development characteristics are described from hatching to settlement. Based on chronological appearance and dissapearance of the characteristics, seven development stages are proposed. Average size at hatching was 212 ± 8.03 μm. Larval growth averaged 26.16 μm d−1. Mean shell length of 997 ± 18.12 μm and maximum shell length of 1022 μm were reached 31 d after hatching. Survival ranged from 20.50 to 22.25% for three replicates. Results of this study are compared with descriptions of larvae from the literature of the four most abundant Strombus spp. Further studies are needed before the feasibility of S. pugilis larvae culture can be adequately ascertained.
Document Type: Research Article
Publication date: 1999-03-01
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