Study of the microfilaremic variation in dogs with Dirofilaria immitis

Authors

  • Maria Helena Matiko Akao Larsson Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Marcia Cecília Meng Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Archivaldo Reche Júnior Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Carlos Eduardo Larsson Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Masao Iwasaki Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Luiz Fernando Dutra

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52098

Keywords:

Dirofilaria, Dogs, Dirofilaria immitis, Microfilariae

Abstract

The periodicity of Dirofilaria immitis microfilariae was studied in 15 adult dogs, purebred or crossbred, males and females. The circulating microfilariae counting was performed according to ANGUS1 (1981). The variation of the microfilaremia was observed during a period of 24 hours, being the blood samples collected with 2 hour intervals. Six of them were submitted to two material collections, one on a warm day, with mean temperature of 23°C, and the other one on a cool day, with mean temperature of 16°C. Analyzing the obtained results it is possible to state that the microfilariae of Dirofilaria immitis present an oscillation, however it is variable and there is not a fixed pattern. It is also true that once present the microfilaremia does not disappear in a subsequent collection, making it not difficult to diagnose this parasitosis.

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Published

1995-06-02

How to Cite

Larsson, M. H. M. A., Meng, M. C., Reche Júnior, A., Larsson, C. E., Iwasaki, M., & Dutra, L. F. (1995). Study of the microfilaremic variation in dogs with Dirofilaria immitis. Brazilian Journal of Veterinary Research and Animal Science, 32(2), 114-119. https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52098

Issue

Section

ANIMAL PATHOLOGY

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