Eliane F. Amato II. E-mail: elianefraga3 hotmail. E-mail: sbamato ufrgs. One hundred eight rosy-billed pochards, Netta peposaca Vieillot, , collected in Brazil and Argentina were examined for endoparasites.
Birds were frozen in dry ice after collection. During necropsy they were categorized according to sex and maturation, either adult or juvenile. The cestode Diploposthe laevis Bloch Jacobi, was found prevalence The mean prevalence of D. This is the first record of a species of the genus Diploposthe in anatideans from South America, and the first record of the species in N.
Details of the cirrus pouch and vagina were described based on histological sections. Key words: Argentina; Brazil; migratory flyway; nesting site; rosy-billed pochard; wintering site.
The genus Diploposthe was proposed by Jacobi in to include cestodes that presented bilateral genital openings and were found as parasites of anatideans, but identified by Bloch, in , as Taenia laevis. In , while identifying specimens collected from Aythya ferina Linnaeus, , Jacobi suggested a new delineation and specimens identified as T.
This characteristic could have led to a misidentification of some species in this genus. Few studies have been carried out with cestodes parasitizing anseriformes. Since this important character was not observed, he concluded that Diploposthe sp.
