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Ultrastructure of the Bacterial Symbiotes in the Pharyngeal Diverticulum of Dacus oleae (Gmelin) (Trypetidae; Diptera)
Author(s) -
Poinar George O.,
Hess R. T.,
Tsitsipis John A.
Publication year - 1975
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1975.tb00083.x
Subject(s) - biology , ultrastructure , foregut , hindgut , appendage , cuticle (hair) , anatomy , pilus , flagellum , midgut , microbiology and biotechnology , bacteria , botany , biochemistry , larva , gene , genetics , virulence
The ultrastructure of the bacterial symbiotes in the pharyngeal diverticula of adult olive flies [ Dacus oleae (Gmelin)] was examined. The diverticulum was an extension of the foregut formed by a row of epithelial cells bounded by an inner layer of cuticle. Towards the hemolymph, the epithelial cells showed an infolding of their basement membrane while adjacent to the cuticular lining, the cells contained a zone of extensive membrane proliferation. The diverticula were packed with bacterial rods which possessed elongate filamentous and short catenulate appendages. The function of these appendages is unknown. They did not resemble fimbriae (pili), flagella or prosthecae described from other bacteria.