Journal of Helminthology

Table of Contents - 2008 - Volume 82, Issue 03  

Research Papers

Ovicidal activity of Paecilomyces lilacinus on Moniezia sp. eggs

F.R. Bragaa1, J.V. Araújoa1 c1, J.M. Araujoa1, R.O. Carvalhoa1, A.R. Silvaa1, A.K. Camposa2 and A.O. Tavelaa1

a1 Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil

a2 UNIVIÇOSA, Viçosa, MG 36570-000, Brazil

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.

(Accepted February 12 2008)

(Online publication July 10 2008)

Correspondence:

c1 Fax: +55 (31) 3899-1464 E-mail: jvictor@ufv.br