Monday, 18 November 2002
D0159

This presentation is part of : Display Presentations, Section A. Systematics, Morphology, and Evolution

Ultrastructure of the endosymbionts of the glassy-winged sharpshooter, Homalodisca coagulata (Homoptera: Cicadellidae)

Rosemarie C. Rosell1, Lana Macoukji1, and Heather Costa2. (1) University of St. Thomas, Biology Department, 3800 Montrose Blvd, Houston, TX, (2) University of California, Department of Entomology, Riverside, CA

Light and transmission electron microscopy were used to examine the intracellular endosymbionts of male and female adult glassy-winged sharpshooters. Bacteriomes consisted of paired reddish organs associated with yellow glandular-like structures located in the ventro-lateral anterior portion of the abdomen. Two morphologically distinct bacteria-like organisms were observed in bacteriocytes: one spherical in shape and one larger, highly pleomorphic organism that often appeared elongated. Both tested gram negative, lacked a cell wall and were usually surrounded by three membranes.

Species 1: Homoptera Cicadellidae Homalodisca coagulata (glassywinged sharpshooter)
Keywords: insect vector, Pierce's disease

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