Low susceptibility of Achatina fulica from Brazil to infection with Angiostrongylus costaricensis and A. cantonensis

Memórias do Instituto Oswaldo Cruz

Erli Neuhauss¹  Monaliza Fitarelli¹  Juliano Romanzini¹  Carlos Graeff-teixeira¹ 

[1] ,Pontifícia Universidade Católica do Rio Grande Instituto de Pesquisas Biomédicas Laboratório de Parasitologia MolecularPorto Alegre RS ,Brasil

关键词: Angiostrongylus cantonensis;    Angiostrongylus costaricenis;    Achatina fulica;    experimental infection;    Brazil;   

DOI  :  10.1590/S0074-02762007000100007

来源: SciELO

【 摘 要 】

Introduction of Achatina fulica in Brazil has led to serious concerns about its role as vector for metaIylid worms: AngioIylus costaricensis and A. cantonensis. Experimental infection with both parasites was performed to evaluate the potential risk for their transmission by the giant African snail. Groups of 5 animals, both wild and bred at captivity were exposed at different inocula: 1, 5, and 10 ´ 10³ L1 of A. costaricensis and A. cantonensis. In all groups, few snails got infected and parasitic burden was low. Two different ways of infection were tested: ingestion produced higher numbers of L3 than the inoculation through an artificial hole in the shell. We also report the parasitological examination of 6 batches of wild A. fulica from Florianópolis, state of Santa Catarina, Brazil: only 1 out of 244 animals were infected with metaIylid larvae. Taken together these data indicate that the giant African snail occurring in Southern Brazil is not a permissive host for both AngioIylus species and does not represent a significant risk for transmission of these parasites.

【 授权许可】

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