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In vitro trapping capability of Arthrobotrys spp. on infective larvae of Haemonchus contortus and Nacobbus aberrans

Published online by Cambridge University Press:  05 June 2009

P. Mendoza-de Gives
Affiliation:
Proyecto Control Biológico, Unidad de Helmintología, Centro Nacional de Investigaciónes Disciplinarias en Parasitología Veterinaria, INIFAP-SARH, Km 11.5 Carr. Federal Cuernavaca-Cuautla, Apdo. Postal 206 CIVAC, 62500 Morelos, México
E. Zavaleta-Mejia
Affiliation:
Centro de Fitopatología, Colegio de Posgraduados, SARH, Km 35.5 Carr. Texcoco-México, Montecillo, Edo. de México, CP. 56230, México
D. Herrera-Rodriguez
Affiliation:
Proyecto Control Biológico, Unidad de Helmintología, Centro Nacional de Investigaciónes Disciplinarias en Parasitología Veterinaria, INIFAP-SARH, Km 11.5 Carr. Federal Cuernavaca-Cuautla, Apdo. Postal 206 CIVAC, 62500 Morelos, México
H. Quiróz-Romero
Affiliation:
Proyecto Control Biológico, Unidad de Helmintología, Centro Nacional de Investigaciónes Disciplinarias en Parasitología Veterinaria, INIFAP-SARH, Km 11.5 Carr. Federal Cuernavaca-Cuautla, Apdo. Postal 206 CIVAC, 62500 Morelos, México

Abstract

The trapping capability of Arthrobotrys oligospora and A. conoides (Hyphomycetales) against third stage larvae (L3) of Haemonchus contortus (Trichostrongylidae) was evaluated in an in vitro trial. Arthrobotrys oligospora showed a 35.87% and 25.71% trapping effectiveness against H. contortus infective larvae at 18 and 25°C, respectively; whereas the trapping capability of A. conoides was 92.17% and 90.40% at the same temperatures, respectively. Microscopic examination demonstrated that A. conoides spontaneously developed a large quantity of three-dimensional loops before the nematodes were added. Neither of the two species studied developed three-dimensional adhesive loops at 30°C, consequently no trapped nematode was observed. In a second trial, the trapping capability of A. conoides against H. contortus (L3) and second stage larvae (J2) of Nacobbus aberrans (Pratylenchidae), was evaluated at 25°C. The trapping capability shown by A. conoides was higher than 90% for both kinds of nematode. The possible use of A. conoides to control ovine haemonchosis is discussed.

Information

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1994

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