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  • Title: Activity of the nematophagous fungi Pochonia chlamydosporia, Duddingtonia flagrans and Monacrosporium thaumasium on egg capsules of Dipylidium caninum.
    Author: Araujo JM, de Araújo JV, Braga FR, Carvalho RO, Ferreira SR.
    Journal: Vet Parasitol; 2009 Dec 03; 166(1-2):86-9. PubMed ID: 19717240.
    Abstract:
    Nematophagous fungi are potential biological control agents of helminths. The in vitro ovicidal effect of four isolates of the nematophagous fungi Pochonia chlamydosporia (VC1 and VC4), Duddingtonia flagrans (AC001) and Monacrosporium thaumasium (NF34) was evaluated on egg capsules of Dipylidium caninum, a cestode parasite of dogs, cats and humans. One thousand egg capsules of D. caninum were plated on 2% water-agar with the grown isolates and control without fungus. The ovicidal activity of these fungi was evaluated 5, 10 and 15 days after incubation. Only P. chlamydosporia showed ovicidal activity (p<0.05) on D. caninum egg capsules, of 19.6% (VC1) and 20% (VC4) on the 5th day; 44.2% (VC1) and 31.5% (VC4) on the 10th day; and 49.2% (VC1) and 41.9% (VC4) on the 15th day. D. flagrans and M. thaumasium caused no morphological damage to egg capsules. The results demonstrated that P. chlamydosporia was in vitro effective against capsules and eggs of D. caninum, and can be considered as a potential biological control agent for this helminth.
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