Authors: F R Braga J V Araújo A K Campos A R Silva J M Araujo R O Carvalho D N Corrêa C A J Pereira
Publish Date: 2008/08/26
Volume: 24, Issue: 11, Pages: 2713-2716
Abstract
The in vitro effect of four isolates of the nematophagous fungi Duddingtonia flagrans AC 001 Monacrosporium sinense SF 53 and Pochonia chlamydosporia VC 1 and VC 4 on eggs of Schistosoma mansoni was examined One thousand S mansoni eggs were plated on 2 water–agar with the grown isolates and control without fungus After 7 14 and 21 days the eggs were removed and classified according to the following parameters type 1 lytic effect without morphological damage to eggshell type 2 lytic effect with morphological alteration of embryo and eggshell and type 3 lytic effect with morphological alteration of embryo and eggshell besides hyphal penetration and internal egg colonization Significant differences P 001 were found among the studied fungal isolates for ovicidal activity confirming type 3 effect for the isolates VC 1 and VC 4 which characterizes the ovicidal activity of a fungus Type 3 effect was only found for P chlamydosporia VC 1 and VC 4 with 266 and 172 256 and 226 274 and 239 in the 7 14 and 21 days respectively P 001 P chlamydosporia can thus be a potential biological control agent for S mansoni eggs
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