The effects of starvation on the metabolic rate and the glucose, glycogen and total lipid contents in the freshwater prosobranch snailBellamya bengalensis (Lamarck) have been investigated. Starvation influenced the metabolic rate ofB. bengalensis. Although there was an initial increase, the metabolic rate of both the sexes decreased in the later stages of starvation. There was a marked difference in the utilization of nutrient stores between male and female snails starved for 55 days.