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Main Title Ultrastructural Evidence for the Presence of Bacteria, Viral-Like Particles, and Mycoplasma-Like Organisms Associated with 'GIARDIA' spp. (Journal Version).
Author Feely, D. E. ; Chase, D. G. ; Hardin, E. L. ; Erlandsen, S. L. ;
CORP Author Nebraska Univ. Medical Center, Lincoln. ;California Univ., Davis. School of Medicine. ;Minnesota Univ., Minneapolis.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/057;
Stock Number PB89-110324
Additional Subjects Giardia ; Symbiosis ; Mycoplasma ; Disease vectors ; Viruses ; Electron microscopy ; Laboratory animals ; Reprints ; Microtus ochrogaster ; Trophozoites ; Cysts ; Castor canedensis ; Ardea herodias ; Butoriedes virescens ; Ondatra zibethica ; Prairie voles ; Disease reservoirs ; Beavers ; Herons ; Muskrats
Library Call Number Additional Info Location Last
NTIS  PB89-110324 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Giardia trophozoites and cysts, isolated from mammalian and avian hosts, were examined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and by fluorescent light microscopy for the presence of microbial symbionts. Mycroplasma-like organisms were observed on the surfaces of trophozoites isolated from the prairie vole, laboratory rat, and beaver. Intracellular bacteria were observed by TEM in the trophozoites and cysts of G. microti and by fluorescence microscopy in trophozoites and cysts of Giardia spp. isolated from beaver, muskrat, great-blue heron, and the green heron. Trophozoites of G. muris from rat small intestine contained viral-like particles measuring 60 nm in diameter. These observations suggest that biological associations between Giardia spp. and diverse microbes may be more common than formerly appreciated. It also raises the possibility of transmission of these apparent symbionts, via the Giardia cyst, to other mammalian hosts including man. (Copyright (c) 1988 by The Society of Protozoologists.)