Ascaridia pavo n. sp. (Nematoda: Ascaridida), a new species of nematode in peafowl.

Abstract

A new Ascaridiidae has been found parasitizing Pavo cristatus, an exotic bird bred on a commercial farm in the Pará Amazon. The new species of Ascaridia Dujardin, 1845 is described on the basis of light and scanning microscopy findings. Morphologically, the new species shares characteristics compatible with the other species of Ascaridia that parasitize birds in Brazil, however, the new species differs from A. pintoi and A. ornata in the length and absence of a wing on the spicules, A. hermaphrodita, A. serrata, A. columbae, A. galli, A. lineata, A. magalhaesi, A. numidae, A. orthocerca, A. pterophora and A. sergiomeirai in the distribution and number of caudal papillae in males, A. amblymoria in the presence of a single papilla on the upper lip, associated with these characteristics most species differ in host order, with only A. columbae, A. galli and A. lineata, parasites of birds in the Phasianidae family. The new taxon adds morphological data to the parasitic biodiversity of commercially reared birds in Brazil.