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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 107, No. 6, 2012, pp. 740-746
Bioline Code: oc12115
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 107, No. 6, 2012, pp. 740-746

 en Angiostrongylus cantonensis check for this species in other resources (Nematode: Metastrongyloidea) in molluscs from harbour areas in Brazil
Carvalho, Omar dos Santos; Scholte, Ronaldo Guilherme Carvalho; de Mendonça, Cristiane Lafeta Furtado; Passos, Liana Konovaloff Jannotti & Caldeira, Roberta Lima

Abstract

Angiostrongylus cantonensis check for this species in other resources is the most common aetiological agent of human eosinophilic meningoencephalitis. Following a report indicating the presence of this parasite in Brazil in 2007, the present study was undertaken to investigate the presence of A. cantonensis in the surrounding Brazilian port areas. In total, 30 ports were investigated and the following molluscs were identified: Achatina fulica check for this species in other resources , Belocaulus check for this species in other resources sp., Bradybaena similaris check for this species in other resources sp., Cyclodontina check for this species in other resources sp., Helix check for this species in other resources sp., Leptinaria check for this species in other resources sp., Melampus check for this species in other resources sp., Melanoides tuberculata check for this species in other resources , Phyllocaulis check for this species in other resources sp., Pomacea check for this species in other resources sp., Pseudoxychona check for this species in other resources sp., Rhinus check for this species in other resources sp., Sarasinula marginata check for this species in other resources , Streptaxis check for this species in other resources sp., Subulina octona check for this species in other resources , Succinea check for this species in other resources sp., Tomigerus check for this species in other resources sp., Wayampia check for this species in other resources sp. and specimens belonging to Limacidae and Orthalicinae. Digestion and sedimentation processes were performed and the sediments were examined. DNA was extracted from the obtained larvae and the internal transcribed spacer region 2 was analysed by polymerase chain reaction-restriction fragment length polymorphism after digestion with the endonuclease ClaI. Of the 30 ports investigated in this study, 11 contained molluscs infected with A. cantonensis larvae. The set of infected species consisted of S. octona, S. marginata, A. fulica and B. similaris. A total of 36.6% of the investigated ports were positive for A. cantonensis, indicating a wide distribution of this worm. It remains uncertain when and how A. cantonensis was introduced into South America.

Keywords
Angiostrongylus cantonensis - molluscs - eosinophilic meningoencephalitis - ports - Brazil

 
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