Cumulative effects of low salinity on larval growth and biochemical composition in an estuarine crab, Neohelice granulata
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منابع مشابه
Cumulative effects of low salinity on larval growth and biochemical composition in an estuarine crab, Neohelice granulata
Throughout the larval development of a highly euryhaline crab, Neohelice (= Chasmagnathus) granulata, we studied effects of reduced salinities (15 and 25‰ vs. seawater control at 32‰) on larval dry mass (W ) and biochemical composition (total lipid and protein). In the early zoeal stages (I, II), reduced salinity caused delayed moulting, while W and biochemical composition at ecdysis remained u...
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We analyzed the dietary copper effects in the estuarine crab Neohelice (Chasmagnathus) granulata and its interaction with water salinity. Crabs were maintained at 2 per thousand and 30 per thousand salinity for 5 weeks and they were fed with commercial food supplemented with the green alga Scenedesmus vacuolatus previously exposed to copper. No mortalities were observed, but crabs maintained at...
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Numerous studies have shown that melatonin exerts some influence on the antioxidant defense system (ADS) in vertebrates, but for crustaceans no such effect has been demonstrated till now. However, earlier reports did show a similar profile of daily variations in the ADS of the gills and the melatonin content of the eyestalk in the crab Neohelice granulata and, thus, the aim of this study was to...
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We studied interrelationships between initial egg size and biomass, duration of embryogenesis at different salinities, and initial larval biomass in an estuarine crab, Chasmagnathus granulata. Ovigerous females were maintained at three different salinities (15 per thousand, 20 per thousand and 32 per thousand); initial egg size (mean diameter), biomass (dry weight, carbon and nitrogen) as well ...
متن کاملLarval performance in an estuarine crab, Chasmagnathus granulata, is a consequence of both larval and embryonic experience
In an experimental laboratory investigation on an estuarine crab, Chasmagnathus granulata Dana, we investigated how salinities experienced during embryonic and larval development (embryonic and larval salinity exposures, respectively) and intraspecific variability of initial biomass at egg laying and hatching affected larval performance. The latter was measured in terms of survival rate, durati...
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ژورنال
عنوان ژورنال: Aquatic Biology
سال: 2008
ISSN: 1864-7782,1864-7790
DOI: 10.3354/ab00033