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Interaction and ovicidal activity of nematophagous fungus Pochonia chlamydosporia on Taenia saginata eggs
Juliana M. Araújo ,
Jackson V. Araújo ,
Fabio R. Braga ,
Rogério O. Carvalho ,
André R. Silva ,
Artur K. Campos
April 2009
April 2009
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Abstract
The ovicidal activity of the nematophagous fungi Pochonia chlamydosporia (isolates
VC1 and VC4), Duddingtonia flagrans (isolate AC001) and Monacrosporium thaumasium
(isolate NF34) on Taenia saginata eggs was evaluated under laboratory conditions.
T. saginata eggs were plated on 2% water-agar with fungal isolates and controls without
fungus and examined after 5, 10 and 15 days. At the end of the experiment P. chlamydosporia
showed ovicidal activity against T. saginata eggs (p<0.05), mainly for internal egg
colonization with results of 12.8% (VC1) and 2.2% (VC4); 18.1% (VC1) and 7.0% (VC4);
9.76% (VC1) and 8.0% (VC4) at 5, 10 and 15 days, respectively. The other fungi showed
only lytic effect without morphological damage to the eggshell. Results demonstrated
that P. chlamydosporia was effective in vitro against T. saginata eggs unlike the
other fungi.