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Case Reports
. 2000 Mar;31(1):77-81.
doi: 10.1638/1042-7260(2000)031[0077:HGNIIA]2.0.CO;2.

Halicephalobus Gingivalis (Nematoda) Infection in a Grevy's Zebra (Equus Grevyi)

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Case Reports

Halicephalobus Gingivalis (Nematoda) Infection in a Grevy's Zebra (Equus Grevyi)

R Isaza et al. J Zoo Wildl Med. .

Abstract

A 6-yr-old female Grevy's zebra (Equus grevyi) with a disseminated rhabditiform nematode infection is described. Antemortem clinical signs were limited to blindness and abnormal behavior believed to be caused by a recurrent nematode-induced uveitis. Histologic examination of the kidneys, heart, eyes, uterus, and lymph nodes revealed granulomas containing multiple sections of rhabditiform nematodes. Most of the recovered nematodes were larval stages with only a few adult females noted. The adults measured 243-297 microm x 11-16 microm (x = 269 x 14 microm). The distinctive rhabditiform esophagi had corpus:isthmus:bulb proportions of 19:11:5. On the basis of adult morphology, the nematode was identified as Halicephalobus gingivalis. This is the first report of this parasite in a zebra and indicates that this parasitic granulomatous disease should be considered in zebras with neurologic disease.

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