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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 110, No. 6, 2015, pp. 739-744
Bioline Code: oc15100
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 110, No. 6, 2015, pp. 739-744

 en Angiostrongylus cantonensis check for this species in other resources infection in molluscs in the municipality of São Gonçalo, a metropolitan area of Rio de Janeiro, Brazil: role of the invasive species Achatina fulica in parasite transmission dynamics
Oliveira, Ana P. M.; Gentile, Rosana; Júnior, Arnaldo Maldonado; Torres, Eduardo J. Lopes & Thiengo, Silvana C.

Abstract

The aim of this study was to analyse the infection dynamics of Angiostrongylus cantonensis check for this species in other resources in its possible intermediate hosts over two years in an urban area in the state of Rio de Janeiro where the presence of A. cantonensis had been previously recorded in molluscs. Four of the seven mollusc species found in the study were exotic. Bradybaena similaris was the most abundant, followed by Achatina fulica, Streptaxis sp., Subulina octona, Bulimulus tenuissimus, Sarasinula linguaeformis and Leptinaria unilamellata. Only A. fulica and B. similaris were parasitised by A. cantonensis and both presented co-infection with other helminths. The prevalence of A. cantonensis in A. fulica was more than 50% throughout the study. There was an inverse correlation between the population size of A. fulica and the prevalence of A. cantonensis and abundance of the latter was negatively related to rainfall. The overall prevalence of A. cantonensis in B. similaris was 24.6%. A. fulica was the most important intermediary host of A. cantonensis in the studied area and B. similaris was secondary in importance for A. cantonensis transmission dynamics.

Keywords
cerebral angiostrongyliasis; Bradybaena similaris; helminths’ larvae; intermediate hosts

 
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