Ultrastructural localization of glycogen in the flight muscle of the blackfly, Simulium vittatum Zett.

Abstract

Abundant glycogen was observed in flight muscles of newly emerged autogenous Simulium vittatum females. Much of the particulate glycogen is tightly packed in the sarcoplasm, but some is located within the myofibrils. More is found in I bands than in H bands. No glycogen was found in the flight muscle of 4-day-old flies.