Intracellular symbiotes of the pea aphid, Acyrthosiphon pisum

摘要: Histological and ultrastructural studies on the mycetome of pea aphid, Acyrthosiphon pisum, disclosed two types symbiotes. The more common primary symbiotes were oval in shape found large mycetocytes making up bulk mycetome. secondary smaller, rod-shaped, restricted to an apparently syncytial sheath partially enclosing mycetocytes. Extensive rough endoplasmic reticulum Golgi occurred but not Lysosomal breakdown both processes differed markedly. In mycetocytes, a small number broken down individually form small, compact residual bodies. sheath, was extensive: numbers within cytolysomes.