Biomphalaria straminea check for this species in other resources - susceptibility - Schistosoma mansoni check for this species in other resources - Serra da Mesa Dam - Goiás - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. s1, 2002, pp. 59-60
Bioline Code: oc02188
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. s1, 2002, pp. 59-60

 en SHORT COMMUNICATION - Susceptibility of Biomphalaria straminea check for this species in other resources (Dunker, 1848) from Serra da Mesa Dam, Goiás, Brazil to Infection with Three Strains of Schistosoma mansoni check for this species in other resources Sambon, 1907
Monica Ammon Fernandez & Silvana Carvalho Thiengo

Abstract

Ecological changes from water resources development projects often affect the epidemiology of water-associated diseases. In order to investigate the occurrence and distribution of freshwater snails of medical and veterinary importance in the area of influence of the Serra da Mesa Hydroelectric a survey has been performed since 1997 and revealed the occurrence of well-established populations of Biomphalaria straminea check for this species in other resources (Dunker, 1848) in the 8 municipalities surrounding the lake. Areas of epidemiologic risk for schistosomiasis were selected and studies of parasite-mollusc compatibility were undertaken using specimens from 19 populations of B. straminea and 3 strains (CM, EC and PB) originally isolated from B. straminea. Among 1,135 specimens used 15 became infected (infection index of 1.3%) and 8 populations were susceptible to the schistosome strains: B. straminea from Campinorte (Castelão, susceptible to CM and EC strains, and Planeta Água, EC strain), Colinas (Tocantinzinho river, CM and EC strains), Minaçu (Canabrava river, EC strain), Niquelândia (Codemin, CM and PB strains, and Almas river, CM strain), Uruaçu (touristic area, PB strain) and Santa Rita do Novo Destino (Maranhão river, CM and EC strains). These results, associated with marked social and ecological changes occurred, strongly suggest the possibility of B. straminea coming to act as a vector of schistosomiasis in the studied area.

Keywords
Biomphalaria straminea check for this species in other resources - susceptibility - Schistosoma mansoni check for this species in other resources - Serra da Mesa Dam - Goiás - Brazil

 
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