[Localization and activity of some hydrolases in larvae of tapeworms Neogryporhynchus cheilancristrotus and Triaenophorus nodulosus parasitizing fish].

In the study, an attempt was undertaken to compare the most common species of tapeworms' larvae in fish: N. cheilancristrotus and T. nodulosus on the basis of histoenzymatic examination of 3 enzymes: alkaline phosphatase (AP), acid phosphatase (APh) and nonspecific esterase (EN-alpha). The high activity of AP and APh in the cuticle and subcuticular cells, and the lack of EN-alpha activity in these structures was stated. Besides, an intensive AP and EN-alpha activity took place in the N. cheilancristrotus scolex, compared to the appropriate T. nodulosus segment in which the reaction was slight.