Histochemical analysis of origin and composition of compound yolks of Chrotogonus trachypterus (Orthoptera)

Two categories of compound yolks originate during vitellogenesis of Chrotogonus trachypterus. CY1 bodies originate near the peripheral ooplasm of the oocyte of stage 6 while CY2 develop in the central ooplasm of the oocyte of stage 8. Histochemically, while CY1 bodies are composed of polysaccharides (including glycogen), proteins (basic proteins, proteins bound reactive -NH2, -SS and -SH groups and tyrosine) and RNA; CY2 bodies consist of polysaccharide (including malt diastase and salivary amylase resistant glycogen and acid mucopolysaccharide), proteins (basic proteins, proteins bound reactive -NH2 group, arginine, histidine and tyrosine) and RNA.