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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 102, No. 6, 2007, pp. 763-768
Bioline Code: oc07122
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 102, No. 6, 2007, pp. 763-768

 en Parasitism of two zoonotic reservoirs Dasyprocta leporina check for this species in other resources and D. fuliginosa (Rodentia) from Amazonas, with Trichostrongylina nematodes (Heligmonellidae): description of a new genus and a new species
Gonçalves, Alessandra Queiroga; Pinto, Roberto Magalhães & Durette-Desset, Marie-Claude

Abstract

A new genus and a new species of Heligmonellidae nematodes are described parasiting the stomach of three agoutis (two Dasyprocta fuliginosa check for this species in other resources and one D. leporina) captured in the middle and high Negro river microregion, state of Amazonas, Brazil. The new genus, as well as its type-species, are closely related to the trichostrongylids included in Fuellebornema, particularly on what concerns the pattern of the caudal bursa, but differing from them by the characteristics of the synlophe, that presents a poorly developed carene, when compared to the referred number of body ridges in Freitastrongylus n. gen. and consequently in F. angelae n. sp.,in which the ridges are well developed and the carene at mid-body has a similar size when compared to the ridge situated in front of the right field (ridge no. 5). Caudal bursa is of the type 1-4, with rays 9 shorter than rays 10, with a very long genital cone.

Keywords
Freitastrongylus angelae n. gen., n. sp. - Nematoda - Trichostrongylina - Heligmonellidae - Dasyprocta spp. - rodents - Caviomorpha - Brazil

 
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