Publication details

Morphological analysis of the cellular interactions between the eugregarine Gregarina garnhami (Apicomplexa) and the epithelium of its host, the desert locust Schistocerca gregaria.

Authors

VALIGUROVÁ Andrea KOUDELA Břetislav

Year of publication 2008
Type Article in Periodical
Magazine / Source European Journal of Protistology
MU Faculty or unit

Faculty of Science

Citation
Web http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7GW3-4S02T8J-2&_user=835458&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000045159&_version=1&_urlVersion=0&_userid=835458&md5=508e623c982c20b2e931866999d07743
Field Zoology
Keywords epimerite; detachment of trophozoite; Gregarina garnhami; Gregarina acridiorum; epimeritic scar; epimeritic septum
Description Morphological features of the eugregarine Gregarina garnhami parasitic in the caeca and mid-gut of the desert locust, Schistocerca gregaria, have been studied by electron microscopy, with particular attention to the epimerite and the host-parasite relationships. The cytoplasmic core of the globular epimerite is overlain by a distinct cortical zone, limited on its cytoplasmic face by a membrane-like structure, with an underlying layer of mitochondria. The periphery of the cortical zone is strengthened by a mass of fine filaments; especially at its base. Fine tubular structures, apparently arising from the membrane-like structure, pass through the cortical zone and attach to the epimerite-host cell interface. The base of the cortical zone is supported by a distinct osmiophilic ring. The epimerite is separated from the rest of the gregarine body by a discontinuous septum. Trophozoites possess conically-arranged fibrils, which arise from the epimeritic septum and continue into the protomerite.
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