Arylsulfatase activity in marine gastropods

K. Dhevendaran, T. Kannupandi, R. Natarajan

Abstract



Arylsulfatase activity was studied in foot, visceral hump and crystalline style of some gastropod molluscs like Cerithidea fluviatilis and Telescopium telescopium of the Vellar Estuary, and Cerithium rubrum, Melampus ceilonicus, Cassidula mustelina, Dostia indica and Littorina tigrina inhabiting the Pitchavaram mangroves. Enzyme kinetics such as pH, optimal temperature and period of incubation were also studied. Enzyme activity showed two pH optima, a primary one at 5.6 and a secondary peak at 7.1, possibly indicating the occurrence of two types of arylsulfatase. In D. indiaca, L. tigrina, and C. rubrum maximum activity was at 37 degrees C, while in other forms it was at 29 degrees C. In C. rubrum and T. telescopium, the crystalline style showed greater enzyme activity than the visceral hump or foot. In L. tigrina and Cassidula mustelina, maximum enzyme activity was seen in the foot region. In starved T. telescopium, greater enzyme activity was seen in mantle and foot but not in the visceral hump

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