Natural hosts of Notocotylus breviserialis (Digenea, Notocotylidae) parasite of brazilian waterfowl

RESUMO

Notocotylus breviserialis has been collected from Anas bahamenis L. and Amazonetta brasiliensis (Gmelin), in Maricá, state of Rio de Janeiro, Brazil. It is the first time that this digenean is collected as adult in its natural hosts, and this is its first record for the neotropical region. The prevalence of N. breviserialis was 5.56 por cento and 18.18 por cento in A. bahamensis and in A. brasiliensis, respectively. New morphological data about the location of the vitelline glands and previtellinic space measurements are presented.