title: A malacological survey in the Manso Power Plant, State of Mato Grosso, Brazil: new records of freshwater snails, including transmitters of schistosomiasis and exotic species.
abstract: BACKGROUND
  Schistosomiasis is a parasitic disease of public health concern in Brazil, and the construction of hydroelectric dams, in addition to increasing permanent human settlement and tourism, has created conditions suitable for the establishment of mollusks that can transmit schistosomiasis. Such areas require a number of actions to prevent the establishment of schistosomiasis. This paper reports on a freshwater malacological survey carried out in the geographical area of the Manso Power Plant.
  
  
  METHODS
  Mollusks were collected in 18 municipalities in the State of Mato Grosso between February 2002 and February 2004 (qualitative study) and from April 2009 to February 2011 (quantitative study).
  
  
  RESULTS
  Thirty-one species of mollusks were collected, including newly recorded species (Antillorbis nordestensis and Burnupia ingae). In addition, the geographic distributions of known species, including Biomphalaria straminea, a snail vector of Schistosoma mansoni, were expanded. A total of 4,507 specimens were collected in the APM Manso reservoir (Usina Hidrelétrica de Aproveitamento Múltiplo de Manso) during the quantitative study, and Biomphalaria amazonica was found in six of the 10 localities analyzed. The Afroasiatic species Melanoides tuberculata, introduced after February 2009, was the dominant species (relative abundance 94.96%).
  
  
  CONCLUSIONS
  The study area is epidemiologically important due to the occurrence of B. straminea and B. amazonica, which are vectors of schistosomiasis, and M. tuberculata, a snail host of Centrocestus formosanus, which is responsible for centrocestiasis transmission. Observations of M. tuberculata and the exotic freshwater clams Corbicula fluminea and Corbicula largillierti raise concerns about biodiversity.
authors.affiliation: Laboratório de Malacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
authors.forename: Monica Ammon
authors.initials: MA
authors.lastname: Fernandez
authors.affiliation: Laboratório de Malacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
authors.forename: Aline Carvalho de
authors.initials: AC
authors.lastname: Mattos
authors.affiliation: Laboratório de Malacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
authors.forename: Elizangela Feitosa da
authors.initials: EF
authors.lastname: Silva
authors.affiliation: Laboratório de Malacologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
authors.forename: Sonia Barbosa Dos
authors.initials: SB
authors.lastname: Santos
authors.affiliation: Laboratório de Malacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
authors.forename: Silvana Carvalho
authors.initials: SC
authors.lastname: Thiengo
mesh_terms: D000818:Animals; D001938:Brazil; D004199:Disease Vectors / Q000145:classification*; D005618:Fresh Water / Q000469:parasitology*; D011156:Population Density; D011210:Power Plants; D012550:Schistosoma mansoni; D012555:Schistosomiasis mansoni / Q000635:transmission; D012621:Seasons; D012908:Snails / Q000145:classification* / Q000469:parasitology*