Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18652
Tipo: Artigo
Título: Effect of the fungus Pochonia chlamydosporia on Echinostoma paraensei (Trematoda: Echinostomatidae)
Autor(es): Lelis, Rosane Teixeira
Braga, Fabio Ribeiro
Carvalho, Lorendane Millena de
Paula, Alessandra Teixeira de
Araujo, Juliana Milani
Fausto, Mariana Costa
Rodrigues, João Victor Facchini
Soares, Filippe Eliasde Freitas
Araújo, Jackson Victor de
Maldonado Junior, Arnaldo
Garcia, Juberlan Silva
Abstract: Echinostoma paraensei is a trematode of the genus Echinostoma that causes echinostomiasis in humans. The objectives of this study were to: evaluate the ovicidal activity of the nematophagous fungus Pochonia chlamydosporia (VC1 and VC4) on a solid medium 2% water–agar (2% WA) against E. paraensei eggs (assay A); evaluate ovicidal effect (destruction of eggs) of the isolate VC4 in supplemented culture media (assay B); and evaluate the ovicidal ability of the crude extract (VC4) on E. paraensei eggs (assay C). Eggs of E. paraensei (assay A) were placed in Petri dishes containing 2% WA with an isolate of the fungus P. chlamydosporia (VC1 and VC4) grown for 10 days, and without fungus as a control and evaluated regarding their destruction. In assay B, eggs of E. paraensei were placed in Petri dishes with different supplemented culture media and with VC4 isolate and the destruction of eggs was examined at the end of 25 days of interaction. In assay C, effects of the crude extract of P. chlamydosporia (VC4) on eggs were evaluated at the end of 7 days. In assay A, there was no difference (p > 0.05) in ovicidal activity among the tested isolates (VC1 and VC4); however, the highest percentage for ovicidal activity (type 3 effect) was demonstrated by the isolate VC4. In assay B, the culture medium starch–agar showed the best results for the destruction of the eggs, with a percentage of 46.6% at the end of the assay. In assay C, the crude extract of VC4 was effective in the destruction of E. paraensei eggs, with a percentage reduction of 53%. The results of this study demonstrate that a rich culture medium with a greater availability of carbon and nitrogen may interfere directly in the predatory characteristics of ovicidal fungi.
Palavras-chave: Nematophagous fungi
Zoonosis
Public health
Pochonia chlamydosporia
Echinostoma paraensei
Editor: Acta Tropica
Tipo de Acesso: Open Access
URI: https://doi.org/10.1016/j.actatropica.2014.07.006
http://www.locus.ufv.br/handle/123456789/18652
Data do documento: 10-Jul-2014
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