title: Freshwater snails and Schistosomiasis mansoni in the state of Rio de Janeiro, Brazil: III--Baixadas Mesoregion.
abstract: In this paper, the third of a series dealing with the survey of freshwater gastropods of the state of Rio de Janeiro, the results of collections carried out in the Mesoregion Baixadas from 2000 to 2002 are presented. Twenty-two species, belonging to seven families, were found. As to the snail intermediate hosts of Schistosoma mansoni, the most frequent species was Biomphalaria tenagophila besides some new findings of Biomphalaria straminea. No specimens were found harboring larval forms of S. mansoni although different kinds of cercariae had been observed.
authors.affiliation: Departamento de Malacologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, 21045-900, Brasil. sthiengo@ioc.fiocruz.br
authors.forename: Silvana C
authors.initials: SC
authors.lastname: Thiengo
authors.forename: Monica A
authors.initials: MA
authors.lastname: Fernandez
authors.forename: M Fernanda
authors.initials: MF
authors.lastname: Boaventura
authors.forename: Marcos G
authors.initials: MG
authors.lastname: Magalhães
authors.forename: Sonia B
authors.initials: SB
authors.lastname: Santos
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000145:classification / Q000469:parasitology*; D001938:Brazil; D004199:Disease Vectors / Q000145:classification*; D005618:Fresh Water; D006790:Host-Parasite Interactions; D011156:Population Density; D012550:Schistosoma mansoni / Q000502:physiology*; D012555:Schistosomiasis mansoni / Q000635:transmission; D012908:Snails / Q000145:classification* / Q000469:parasitology; D013045:Species Specificity