Abstract
ABSTRACT Cercopithifilaria bainae is a nematode belonging to the family Onchocercidae that parasitizes the subcutaneous tissue of dogs. Its transmission occurs through the tick Rhipicephalus sanguineus and its geographical distribution overlaps that of this vector. The present study reports the detection of microfilaremia by C. bainae in an eight-year-old male dog that presented anorexia, hyperthermia, motor incoordination, mydriasis, a nodule in the left testicle and concomitant infection by Ehrlichia sp. Blood samples were analyzed using microscopy, PCR and DNA sequencing. Microfilariae measuring 150±5.5μm in length and 7±1.8μm in width were retrieved. The DNA sequence exhibited 98% identity with C. bainae sequences available in Genbank. This is the first report of microfilaremia by C. bainae in a dog in the central western region of Brazil.
Highlights
Filarioids of the family Onchocercidae include species with microfilariae that circulate in the bloodstream (Dirofilaria immitis and Acantocheilonema reconditum) or parasitize the subcutaneous tissue of vertebrate hosts (Cercopithifilaria sp. and Onchocerca lupi) (McCall et al, 2008)
In Brazil, information on the occurrence of C. bainae is available in dogs and Rhipicephalus sanguineus only for the southeastern (Almeida and Vicente, 1984) and northeastern regions (Latrofa et al, 2014; Ramos et al, 2016), there is no information of this filarioids in other regions of the country, despite the wide distribution of the tick vector
This paper reports a case of C. bainae in a dog in the central western region of Brazil showing atypical microfilaremia
Summary
Filarioids of the family Onchocercidae include species with microfilariae that circulate in the bloodstream (Dirofilaria immitis and Acantocheilonema reconditum) or parasitize the subcutaneous tissue of vertebrate hosts (Cercopithifilaria sp. and Onchocerca lupi) (McCall et al, 2008). C. bainae is considered the most common in dogs and its biology has been studied in recent years (Otranto et al, 2012).
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