Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Angiostrongylus cantonensis 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

2015; Instituto Oswaldo Cruz, Ministério da Saúde; Volume: 110; Issue: 6 Linguagem: Inglês

10.1590/0074-02760150106

ISSN

1678-8060

Autores

Ana PM Oliveira, Rosana Gentile, Arnaldo Maldonado, Eduardo José Lopes Torres, Silvana Carvalho Thiengo,

Tópico(s)

Mercury impact and mitigation studies

Resumo

The aim of this study was to analyse the infection dynamics ofAngiostrongylus cantonensis in its possible intermediate hosts over two years in an urban area in the state of Rio de Janeiro where the presence ofA. 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 byAchatina 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. cantonensisin A. fulica was more than 50% throughout the study. There was an inverse correlation between the population size ofA. 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. similariswas 24.6%. A. fulica was the most important intermediary host of A. cantonensis in the studied area andB. similaris was secondary in importance for A. cantonensis transmission dynamics.

Referência(s)