[Change in the carbohydrate metabolic indices in the hemolymph of freshwater molluscs infected with trematode parthenitae and larvae].

The effect of parthenites and larvae of trematodes on the contents of total sugar, glucose as well as on the variations in the activity of acid and alkaline phosphatases of the haemolymph of Lymnaea stagnalis, Planorbis corneus and Viviparus viviparus has been studied. The studies have revealed differences in the degree of effect of individual species of parasites on their hosts depending on their localisation, infection intensity and developmental stage.