Endosymbiosis of Phloem Sap Sucking Planthoppers with special Reference to Sogatodes orizicola (Muir) feeding on Oryza sativa L.

Abstract

After a brief survey of the various forms of symbiosis between cicadas and microorganisms, the symbiotic activities and the transovarial transmission of bacteroid symbiots at the example of Euscelis plebejus, the carriers of yeast-like symbiots are dealt with. These are species of cicadas mainly from the Family Delphacidae that are known as vectors of rice viroses. The distribution of the symbiots in the body of the different instars and of the adults, their increase during the development of the cicadas, the significance of their metabolic activities for the host organism, the form of their transmission to the offspring and their reactions to antibiotics and other xenobiotics of Laodelphax striatellus, Nilaparvata lugens and Sogatodes orizicola are compared and found to correspond in many respects.