Relata-se pela primeira vez a infestação de caprinos e ovinos por pulgas e carrapatos em propriedade rural do Município de Sinop, Mato Grosso, Brasil. Após inspeção visual e tátil da superfície corporal dos animais, os espécimes coletados foram levados ao laboratório para identificação utilizando chaves específicas. As pulgas, coletadas somente nos caprinos, pertenciam à espécie Ctenocephalides felis felis. Os carrapatos coletados nos caprinos e ovinos pertenciam à espécie Rhipicephalus (Boophilus) microplus.

This is the first report of the infestation of goats and sheep by fleas and ticks on rural property in the municipality of Sinop, Mato Grosso, Brazil. After visual and tactile body surface inspection, specimens were taken to the laboratory for identification using specific keys. Fleas, collected only from goats, belonged to the species Ctenocephalides felis felis. Ticks collected from goats and sheep belonged to the species Rhipicephalus (Boophilus) microplus.

The Brazilian Spotted Fever (BSF) is a zoonosis that can be fatal if not trteated. As there are few studies of the BSF in the Paraná State, the occurrence of BSF was serologically investigated in dogs and horses by indirect immunofluorescence assay (IFA), in the North of that State, in animals that are regarded as sentinels for BSF. A total of 241 samples of sera of equine, four of asinine, and 29 of dogs were collected in nine farms of three municipalities in the North of Paraná: Arapongas, Douradina, and Umuarama. From fifteen samples of equine serum with positive titres for RIFI, eight (53.3 %) had titre of 64 against R. rickettsii, two (13.3 %) 128 against R. rickettsii, and five (33.3 %) were reactants for R. parkeri and R. rickettsii, with titres ranging from 64 to 2048, and 128 to 1024, respectively. The results showed that domestic animals, sentinels for BSF, are under low exposition to ticks infected with spotted fever group Rickettsia, indicating low risk of human infection by these agents in the studied area.