Dosinia elegans is a venerid which is a constituent of sublittoral soft-bottom communities in Biscayne Bay, Florida. There are two settlements of young in the course of the year. A length of about 15 mm is reached in a year, and an animal with the maximum size of 25 to 30 mm
is 2 to 3 years old. A mortality rate of 80 per cent per annum has been estimated. On the grounds studied, the biomass of Dosinia averaged 102 mg per square meter, and this produced the very high spawn output of 160 mg. The ratio of annual productivity to standing crop was 2.8, which
is about midway in the range of comparable local species. The growth rate was lower than that of most of these species.
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