Articulo
Aerobic and anaerobic enzymatic activities of calyptogena gallardoi (vesicomyidae): a clam associated with methane cold seeps off chile
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM (PRINT);
J. Mar. Biol. Assoc. U.K.
Registro en:
0
D04I1111
D04I1111
WOS:000258750600014
0025-3154
Autor
Quiroga-Jamett, Eduardo
Sellanes-López, Rogelio
González, R.
Quinones, R.
Institución
Resumen
Calyptogena gallardoi is a recently described species of vesicoomyid clam associated to the extensive gas-hydrate field reported for the Chilean margin along 35 degrees S to 45 degrees S. Enzymatic analysis in foot, gill and abductor muscle tissues of C. gallardoi collected in central-south Chile (similar to 36 degrees 21'S 73 degrees 44'W), show high activities for malate dehydrogenase (MDH), strombine dehydrogenase (STRDH) and alanopine dehydrogenase (ALPDH) and a low activity of citrate synthase (CS) and ETS (electron transport system). Positive significant correlations (log-log scale) were found between enzymatic activities involved in anaerobic metabolism (MDH versus LDH and ALPDH versus STRDH), as well as between CS and opines dehydrogenases. The ratio MDH,l LDH or an), other opine dehydrogenase assayed was >> 1 in all tissues analysed. These results indicate that C. gallardoi is highly adapted to the harsh anaerobic conditions of marine chemosynthesis-based communities inhabiting a reduced environment. This research was funded by the COPAS Center (FONDAP, CONICYT, Chile). Additional funding for E.Q. and J.S. was provided by Fondecyt 1061217 project. 3 FONDEF rogonzal@udec.cl COPAS Center (FONDAP, CONICYT, Chile); Fondecyt [1061217] 5 FONDEF 88