Costs of delayed metamorphosis: reduced growth and survival in early juveniles of an estuarine grapsid crab, Chasmagnathus granulata
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منابع مشابه
Costs of delayed metamorphosis: reduced growth and survival in early juveniles of an estuarine grapsid crab, Chasmagnathus granulata
When the megalopa stage of estuarine crab species becomes competent for settlement and metamorphosis, it responds to specific chemical and physical cues from the adult environment. Delayed metamorphosis in the absence of such cues is beneficial insofar as it increases the probability of finding a suitable habitat, and it may also enhance the genetic exchange between separate populations. Howeve...
متن کاملStimulation of metamorphosis in an estuarine crab, Chasmagnathus granulata (Dana, 1851): temporal window of cue receptivity
The larvae of most benthic marine invertebrate species must develop for a minimum of time in the plankton before they become competent for settlement and metamorphosis in response to stimulating external cues. In an experimental laboratory study, we identified the temporal window of cue receptivity within the moulting cycle of the megalopa stage of an estuarine crab, Chasmagnathus granulata Dan...
متن کاملGill Na(+),K(+)-ATPase and osmoregulation in the estuarine crab, Chasmagnathus granulata Dana, 1851 (Decapoda, Grapsidae).
Some kinetic properties of gill Na(+),K(+)-ATPase of the estuarine crab, Chasmagnathus granulata, and its involvement in osmotic adaptation were analyzed. Results suggest the presence of different Na(+),K(+)-ATPase isoforms in anterior and posterior gills. They have different affinities for Na(+), but similar affinity values for K(+), Mg(2+), ATP and similar enzymatic profiles as a function of ...
متن کاملOntogeny of osmoregulation, physiological plasticity and larval export strategy in the grapsid crab Chasmagnathus granulata (Crustacea, Decapoda)
The grapsid crab Chasmagnathus granulata populates brackish-water lagoons and other estuarine environments. In its reproduction, this species follows a strategy of larval export, i.e. its larvae live under different salinity conditions from the juveniles and adults. In the present experimental investigation, ontogenetic changes in the capability for osmoregulation were studied in all 4 zoeal st...
متن کاملDietary copper effects in the estuarine crab, Neohelice (Chasmagnathus) granulata, maintained at two different salinities.
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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ژورنال
عنوان ژورنال: Journal of Experimental Marine Biology and Ecology
سال: 1999
ISSN: 0022-0981
DOI: 10.1016/s0022-0981(98)00219-6