Artigo
First report of the activity of predatory fungi on Angiostrongylus cantonensis (Nematoda: Angiostrongylidae) first-stage larvae
Autor
Paula, Alessandra Teixeira de
Braga, Fabio Ribeiro
Carvalho, Lorendane Millena de
Lelis, Rosane Teixeira
Mello, Ingrid Ney Kramer de
Tavela, Alexandre de Oliveira
Soares, Fillipe Elias de Freitas
Maldonado, Arnaldo Junior
Garcia, Juberlan da Silva
Araújo, Jackson Victor de
Institución
Resumen
The nematode Angiostrongylus cantonensis causes eosinophilic meningoencephalitis in humans and thus alternative methods of control should be studied. The objective of this work was to evaluate the predatory capacity of eight fungal isolates of the species Duddingtonia flagrans (AC001, CG768 and CG722),
Monacrosporium thaumasium (NF34), M. sinense (SF53) and Arthrobotrys robusta (I31), A. cladodes (CG719) and A. conoides (I40) on first-stage larvae (L 1 ) of A. cantonensis under laboratory conditions. The treated groups contained 1000 conidia of the fungal isolates and 1000 A. cantonensis L 1 in Petri dishes containing 2% water-agar medium (2% WA). The control group (without fungi) contained only 1000 A. cantonensis L 1 in 2% WA. Evidence of predation was observed at the end of 7 days. Percentage reductions in L 1 were:
AC001, 82.8%; CG768, 71.0%; CG722, 72.8%; NF34, 86.7%; SF53, 89.7%; I40, 48.3%; CG719, 84.7%; and I31, 80.4%. No significant difference was observed (p > 0.01) between the actions of the isolates used; however, a difference was noted (p < 0.01) in relation to the control group. The results of the present work, confirm previous reports of the effectiveness of the fungi D. flagrans, M. thaumasium, M. sinense and A. robusta in controlling larvae of potentially zoonotic nematodes, this being the first report on A. cantonensis L 1 .