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Ovicidal activity of Paecilomyces lilacinus on Moniezia sp. eggs

Published online by Cambridge University Press:  01 September 2008

F.R. Braga ,
J.V. Araújo ,
J.M. Araujo ,
R.O. Carvalho ,
A.R. Silva ,
A.K. Campos  and
A.O. Tavela
F.R. Braga
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
J.V. Araújo*
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
J.M. Araujo
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
R.O. Carvalho
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
A.R. Silva
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
A.K. Campos
Affiliation:
UNIVIÇOSA, Viçosa, MG 36570-000, Brazil
A.O. Tavela
Affiliation:
Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
*
*Fax: +55 (31) 3899-1464 E-mail: jvictor@ufv.br
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Abstract

The ovicidal activity of Paecilomyces lilacinus was evaluated on Moniezia sp. eggs. Eggs of Moniezia sp. were incubated on plates with 2% agar-water inoculated with grown fungal isolates and a control treatment without fungus. After 5, 10 and 15 days post-inoculation, the eggs were removed and classified according to the following parameters: effect type 1, lytic effect without morphological damage to eggshells; effect type 2, lytic effect with morphological change in embryos and eggshells; and effect type 3, lytic effect with morphological change in embryos and eggshells, with hyphal penetration and internal colonization of eggs. Paecilomyces lilacinus showed percentages for ovicidal activity (P < 0.01), mainly type 3 effect, of 19, 20 and 23% on eggs of Moniezia sp., after 5, 10 and 15 days post-inoculation, respectively. Therefore P. lilacinus can be considered as a potential biological control agent for this cestode.

Type
Research Papers
Information
Journal of Helminthology , Volume 82 , Issue 3 , September 2008 , pp. 241 - 243
Copyright
Copyright © Cambridge University Press 2008

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