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Onchocerca sweetae (Nematoda: Filarioidea): notes on the intermediate host
Published online by Cambridge University Press: 05 June 2009
Abstract
Microfilariae of Onchocerca sweetae are broadly distributed in the superficial layers of the dermis of the water buffalo (Bubalus bubalis). A total of 2855 insects representing 20 species were collected from O. sweetae-infected bait buffaloes. Only one species, Culicoides sp. “M”, ingested microfilariae from buffalo skin. Larval development of O. sweetae was observed in the thorax of this species. A total of 829 insects, representing 7 species and including 749 parous Culicoides spp. were collected from light and Manitoba traps. Developing filarioid larvae were observed only in Culicoides sp. “M”. It is concluded that Culicoides sp. “M” is a natural intermediate host of O. sweetae in the Northern Territory of Australia.
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