Distribuição temporal de Melanoides tuberculata (Mollusca: Thiaridae) naturalmente infectados por Centrocestus formosanus (Trematoda: Heterophyidae) no Brasil

Abstract

Melanoides tuberculata harboring pleurolophocercous cercariae identified as Centrocestus formosanus were collected monthly from March 2006 to February 2007, during a malacological survey conducted at the Pampulha Reservoir, Belo Horizonte, Minas Gerais, Brazil. From 2,727 specimens of thiarids collected, 190 (7%) were infected with C. formosanus. Larvae of this heterophyid were found in the snails in all months sampled and prevalence of infection between 0.3% and 37% were recorded. The seasonal occurrence of C. formosanus in M. tuberculata is reported for the first time in Brazil. Keywords: Cercaria, heterophyid, Minas Gerais, thiarids, trematodes, seasonality.