Record of Myiasis by Cuterebra apicalis in Domestic Dog in the Central Region of Brazil / Registro de miíase por Registro de miíase por Cuterebra apicalis em cão doméstico na região Central do Brasil

ABSTRACT

Background: Cuterebrosis is a furuncular myiasis caused by a dipterous from the genus Cuterebra. These flies are highly species-specific in relation to their hosts, being mostly common to rodents, lagomorphs and marsupials, with the development of a large subcutaneous furuncle as the main clinical manifestation. The most important microscopic alterations are the invasion of the damaged area by neutrophils, lymphocytes, macrophages, eosinophils and mast cells and the proliferation of fibroblasts and endothelial cells. However, the Cuterebrosis can occur in domestic animals, causing the formation of an atypical parasitic cycle, with the development of significant and severe clinical signs due to the erroneous migration of larvae, a situation not observed in typical hosts. Neuritis has been verified in cats due to the migration triggered by the larvae, causing irreversible damage to the central nervous system. In Brazil no reports of cases of myiasis in dogs and cats have been reported for any species of Neotropical Cuterebra. One of the species most commonly found in studies parasitizing mammals in the Midwest is Cuterebra apicalis. However, this Diptera has only been found parasitizing marsupials Didelphidae rodents and rodent Cricetidae. This study notifies the first case of furuncular obligatory myiasis in a dog in Central Brazil, in the Federal District, caused by Cuterebra apicalis. Case In November 2009, an adult female Poodle dog (eight years old), was received from an urban area of the Federal District (Vicente Pires), an area close to large remnants of Cerrado stricto sensu. The dog was treated at a private veterinary clinic in Brasilia. The animal presented a furuncular myiasis in the lumbar region. Larvae were detected at the lesion site, which was collected for clinical veterinary analysis and sent for identification, on a 20 mL container with a third of its volume filled with vermiculite to safeguard the integrity of the material. [...]