[Histochemical study of the dorso-ventral flight muscles of the locust, Locusta migratoria].

Histochemical studies have been made on the activity of succinic dehydrogenase (SDH), lipase and localization of lipids in flight monofunctional (83, 84 and 113) and bifunctional (118, 119 and 120) muscles of the locust L, migratoria. Three types of muscle fibers were found in the bifunctional flight muscle 120 which differ in their enzymic activity and the intensity of staining by Sudan Black. The activity of SDH and lipase was found to be the highest in fast muscle fibers, and the lowest -- in slow ones. For the first time muscle fibers were described which may be considered as "intermediate" with respect to their structure and histochemical characteristics.