Effects of starvation, and light and dark on the energy metabolism of symbiotic and aposymbiotic sea anemones, Anthopleura elegantissima

Autor:	W. K. Fitt, R. L. Pardy
Rok vydání:	1981
Předmět:	Ecology biology Catabolism Dinoflagellate Aquatic Science Sea anemone biology.organism_classification Aposymbiotic Symbiodinium Carbohydrate catabolism Botany Anthopleura Gymnodinium Ecology Evolution Behavior and Systematics
Zdroj:	Marine Biology. 61:199-205
ISSN:	1432-1793 0025-3162
DOI:	10.1007/bf00386660
Popis:	Rates of oxygen and carbon-dioxide exhange were measured in symbiotic and aposymbiotic specimens of the sea anemone Anthopleura elegantissima while fed and starved under light or dark conditions. Respiratory quotients indicated that fed anemones switched from a carbohydrate to a fat catabolism when starved, with the exception that symbiotic individuals starved in the light showed a pronounced carbohydrate catabolism for over 1 month. The source of the carbohydrate was probably photosynthate translocated by the dinoflagellate Symbiodinium (=Gymnodinium) microadriaticum (Freudenthal) living in the anemones' tissues. The starved symbiotic anemones maintained in the light had lipid levels not significantly different from fed controls and 44 to 61% higher than starved aposymbiotic anemones after 1 month. Thus, the quality and quantity of the metabolic flux from the symbionts to the sea anemone were sufficient to conserve the host's lipid reserves.
Databáze:	OpenAIRE
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