Larval Development of Portunus Spinicarpus Reared in the Laboratory
Freshly hatched larvae of Portunus spinicarpus (Stimpson) were reared in 24 combinations of temperature and salinity, but they only developed to the megalopal stage in temperatures of 20°C and 25°C and salinities of 30‰, 35‰, 40‰, and 45‰ and to the first crab stage in a salinity of 35‰ and in temperatures of 20°C and 25°C. Seven zoeal stages and one megalopal stage are described and figured with particular reference to types of setae on appendages. Criteria for differentiating P. spinicarpus from Callinectes sapidus and other species of the subfamily Portuninae, which have been reared, are discussed.
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Document Type: Research Article
Publication date: 1974-03-01
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