Morphological diagnosis of Setaria labiatopapillosa in domestic bovids from Marajó Island, Brazil

Abstract

The genus Setaria is known worldwide for parasiting wild and domestic mammals, with 43 species registered, of which five occur in the American continent. The objective of this study was to characterize the occurrence, morphology and morphometry of S. labiatopapillosa in B. taurus and B. bubalis in Marajó Island, Brazil. Carcass inspections of 420 cattle were carried out in two slaughterhouses in Pará. The nematodes were found on the white and serous viscera of the small intestine, being cleaned and discussed for analysis by light microscopy and scanning electron microscopy. The morphological and morphometric characteristics are compatible with S. labiatopapillosa parasitizing both species, with a prevalence of 25% (B. bubalis) and 24% (B. taurus). Information obtained by scanning electron microscopy was added to the description of the species, in addition to expanding the distribution of this parasite in the national territory.

Morphology of Setaria spp. (Setariidae; Nematoda) in Aceh cattle, Indonesia

“…The parasite's predilection is in the peritoneal cavity of both domestic and wild animals (Gomez-Puerta and Mayor 2017; Mrifag et al 2021). The genus Setaria is known worldwide as a parasite of domestic and wild mammals, with 43 species have been registered, five of which found in America (Rodrigues et al 2021).…”