[An electron microscopic study of Borrelia in the body of the female ixodid tick Ixodes persulcatus].
Borrelia burgdorferi s. lato in naturally infected females of tick Ixodes persulcatus were examined by transmission electron microscopy. The Borreliae were found in midgut and ovary. Location and ultrastructure of bacteria indicate extracellular migration through the midgut epithelium as a preferential way. In gonad, the borreliae intracellular situate in ovarian epithelium and oocytes before and at the beginning of vitellogenesis. The demonstration of numerous spirochetes in the oocytes provides the support for transovarial transmission of the agent. Two morphological types of borreliae were observed.
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D000818:Animals; D015748:Borrelia burgdorferi Group / Q000648:ultrastructure*; D005215:Fasting; D005247:Feeding Behavior; D005260:Female; D007422:Intestines / Q000382:microbiology; D018884:Ixodes / Q000382:microbiology*; D008317:Malpighian Tubules / Q000382:microbiology; D008854:Microscopy, Electron / Q000379:methods; D010053:Ovary / Q000382:microbiology; D012469:Salivary Glands / Q000382:microbiology; D013997:Time Factors