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Interaction between the nematophagous fungus Duddingtonia flagrans and infective larvae of Haemonchus contortus (Nematoda: Trichostrongyloidea)

Published online by Cambridge University Press:  01 December 2008

A.K. Campos ,
J.V. Araújo  and
M.P. Guimarães
A.K. Campos*
Affiliation:
Departamento de Parasitologia, Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Caixa Postal 486, Belo Horizonte, CEP 31270-901Minas Gerais, Brazil UNIVIÇOSA, Viçosa, Minas Gerais, Brazil
J.V. Araújo
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, Minas Gerais36570-000, Brazil
M.P. Guimarães
Affiliation:
Departamento de Parasitologia, Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Caixa Postal 486, Belo Horizonte, CEP 31270-901Minas Gerais, Brazil
*
*E-mail: [email protected]
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Abstract

The interaction between Duddingtonia flagrans and infective larvae of Haemonchus contortus was studied in vitro under optical and scanning electron microscopy. Trap formation by the fungus started 9 hours after inoculation and first larvae were found 11 hours after larval inoculation on colonies grown on the surface of dialysis membranes. Scanning electron micrographs were taken 12, 24, 36 and 48 h after larval predation. Details of predation structures and fungus–larvae interaction are described. A mucilaginous substance occurred at the points of adherence of traps to nematode cuticle. Bacteria were also found at some points of interaction between fungus and larval cuticle. Cuticle penetration by fungus hyphae occurred only 48 h after predation.

Type
Research Papers
Information
Journal of Helminthology , Volume 82 , Issue 4 , December 2008 , pp. 337 - 341
Copyright
Copyright © Cambridge University Press 2008

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