Revista Brasileira de Parasitologia Veterinária (Oct 2017)

Litomosoides silvai (Nematoda: Onchocercidae) parasitizing Akodon montensis (Rodentia: Cricetidae) in the southern region of Brazil

  • Lucas Trevisan Gressler,
  • Felipe da Silva Krawczak,
  • Marcelo Knoff,
  • Silvia Gonzalez Monteiro,
  • Marcelo Bahia Labruna,
  • Lina de Campos Binder,
  • Caroline Sobotyk de Oliveira,
  • Juliana Notarnicola

DOI
https://doi.org/10.1590/s1984-29612017060
Journal volume & issue
no. 0

Abstract

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Abstract In the present study, Litomosoides silvai parasitizing Akodon montensis in the southern region of Brazil is reported for the first time. New morphological information is provided for some structures of this nematode species, such as a flattened cephalic extremity, presence of two dorsal cephalic papillae, female tail with a constriction at its tip, “s” shaped vagina, spicules characteristic of the carinii species group and microfilaria tail constricted at the tip. This nematode was found parasitizing the thoracic cavity with a prevalence of 10% (2/20), mean intensity of 4 (6/2), mean abundance of 0.4 (8/20) and range of infection of 2-6 specimens per host, in southern Brazil. This occurrence of L. silvai in A. montensis is a new geographical record for southern Brazil, in the Upper Paraná Atlantic Forest ecoregion of the northwestern region of Rio Grande do Sul, which is part of the Atlantic Forest biome.

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