Growth, Mortality, and Productivity of South Floridian Littorinidae (Gastropoda: Prosobrancida)
Abstract:The littorinid species Tectarius muricatus, Nodilittorina tuberculata, Echininus nodulosus, Littorina lineata, L. lineolata, and L. ziczac showed significant seasonal variations in growth rate. Age, sex, mortality rates, and size at sexual maturity affected the growth pattern.
Secondary productivity, somatic tissue plus spawn production, was estimated for each species at one or more geographical locations. Spawn production was shown to comprise up to 85 per cent of secondary production for Floridian littorinids. The effects of species biomass and population structure on the ratio of spawn to somatic tissue production were estimated for each location.
Document Type: Research Article
Publication date: June 1, 1974
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