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O’Dwyer

sign for other diseases. Only one dog, with the highest parasitemia (0.5%), had leucocytosis, which is also a hematological manifestation described for canine hepatozoonosis (Baneth et

al., 1995; Gondim et al., 1998).

The only

alteration

biochemistry,

in

revealed

by

all

animals,

serum was

not show important blood serum abnormalities in laboratory. The parasitemia of the infected dogs was very low (lower than 0.1%) and this could be the lack of clinical manifestations. Baneth and Weigler (1997) found that animals with high parasitemia had more severe systemic manifestation of the infection than dogs with low parasitemia.

hyperglobulinemia, but this result could be explained by the fact that the dogs had been recently vaccinated or might had concurrent diseases as already mentioned.

The results indicate that the H. canis is one species found in these cities of São Paulo causing mild canine hepatozoonosis.

Although the H. canis-infected dogs were stray dogs and might had concurrent diseases, they did

Keywords: dog, Hepatozoon canis, hematology, prevalence

RESUMO

Cães capturados nas ruas de quatro municípios do estado de São Paulo foram examinados para estudar a prevalência de Hepatozoon canis. Dos 222 animais, 13 (5.9%) encontravam-se infectados. Exames hematológicos realizados em nove animais evidenciaram três com anemia e um com leucocitose. A única alteração encontrada nos exames bioquímicos foi hiperglobulinemia.

Palavras-chave: cão, Hepatozoon canis, hematologia, prevalência

REFERENCES

AGUIAR, D.M.; RIBEIRO, M.G.; SILVA, W.B. et al. Hepatozoonose canina: achados clínico- epidemiológicos em três casos. Arq. Bras. Med. Vet. Zootec., v.56, p.411-413, 2004.

BANETH, G.; HARMELIN, A.; PRESENTEZ, B.Z. et al. Hepatozoon canis in two dogs. J. Am. Vet. Med. Assoc., v.206, p.1891-1894, 1995.

BANETH, G.; MATHEW, J.S.; SHKAP, V. et al. Canine hepatozoonosis: two disease syndromes caused by separate Hepatozoon spp. Trends Parasitol., v.19, p.27-31, 2003.

BANETH, G.; WEIGLER, B. Retrospective case-control study of hepatozoonisis in dogs in Israel. J. Vet. Intern. Med., v.11, p.365-370, 1997.

FELDMAN, B. F.; ZINKL, J. G.; JAIN, N.C. Schalm´s veterinary hematology. Philadelphia: Lippincott Williams & Wilkns, 2000. 1344p.

GONDIM, L.F.P.; KONAYAGAWA, A.; ALENCAR, N.X. et al. Canine hepatozoonosis in Brazil: description of eight naturally occurring cases. Vet. Parasitol., v.74, p.319-323, 1998.

KANEKO, J.; HARVEY, J.W.; BRUSS, M.L. Clinical biochemistry of domestic animals. 5.ed. San Diego: Academic, 1997. 932p.

MASSARD, C.A. Hepatozoon canis (James, 1905) (Adeleida: Hepatozoidae) de cães do Brasil, com uma revisão do gênero em membros da ordem carnívora 1979. 121f. Tese (Mestrado)

  • -

    Departamento de Parasitologia, Universidade

Federal Rural do Rio de Janeiro, Seropédica, RJ.

O'DWYER, L.H.; MASSARD, C.L.; PEREIRA DE SOUZA, J.C. Hepatozoon canis infection associated with dog ticks of rural areas of Rio de Janeiro State, Brazil. Vet. Parasitol., v.94, p.143- 150, 2001.

O'DWYER, L.H.; SAITO, M.E.; HASEKAWA, M.Y. et al. Tissue stages of Hepatozoon canis in naturally infected dogs from São Paulo State, Brazil. Parasitol. Res., v.94, p.240-242, 2004.

PALUDO, G.R.; DELL’PORTO, A.; CASTRO E TRINDADE, A.R. et al. Hepatozoon spp.: report of some cases in dogs in Brasília, Brazil. Vet. Parasitol., v.118, p. 243-248, 2003.

690

Arq. Bras. Med. Vet. Zootec., v.58, n.4, p.688-690, 2006

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