Influence of temperature and salinity on glucose-06-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase in mussel (Mytilus edulis, L.)

A. Carrión
M. Silva
E. Cienfuegos
M. Ruiz-Amil
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Abstract

The activity of Glucose-06-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase in mussel hepatopancreas and gill tissues decreases with the salinity of sea water. A decrease in both activities is observed during the first few days in the hepatopancreas of mussel starved at temperatures upper and below the natural thermal habitat; later, the levels of enzymes experience a transitory rise. The influence of temperature on the Km of 6-phosphogluconate dehydrogenase for the hepatopancreas was studied. Minimum value correspond to the nearest temperature to that of the mussel natural habitat.

Keywords:
Animals, Bivalvia/enzymology, Gills/enzymology, Glucosephosphate Dehydrogenase/metabolism, Liver/enzymology, Osmolar Concentration, Pancreas/enzymology, Phosphogluconate Dehydrogenase/metabolism, Seawater, Sodium Chloride, Temperature

Authors

A. Carrión
M. Silva
E. Cienfuegos
M. Ruiz-Amil


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