IN VITRO ASSESSMENT OF NEMATOPHAGUS FUNGI FOR BIOLOGICAL CONTROL OF GASTROINTESTINAL NEMATODES OF RUMINANTS
Journal Title: Revista MVZ Cordoba - Year 2009, Vol 14, Issue 3
Abstract
Objetive. To determine in vitro predatory activity of fungi strains nematófagos native of Costa Rica. Materials and methods. Sixteen native strains of nematophagus fungi from Costa Rica isolated from different substrata and identified as Candelabrella musiformis, Arthrobotrys oligospora and Dactylella sp. In order to assess their fungi predatory activity, it was evaluated in vitro assay gastrointestinal nemátodos as Haemonchus spp., Oesophagostomum sp. and Trichostrongylus sp, isolated from small ruminants. Results. The activity of fungi was very heterogeneous, ranging between 9.8 and 99.6%. Conclusions. The statistical analysis showed significant differences; however, A. oligospora strains were more effective in capturing nematodes in comparison with C. musiformis and Dactylella sp. strains. Heterogeneity is explained by factors like strains origin, their own characteristics and type of larvae used in the test.
Authors and Affiliations
Martha Orozco A, M. Sc *| Universidad Nacional de Costa Rica. Escuela de Ciencias Agrarias. Laboratorio de Ecología de los organismos del suelo y control biológico, Heredia, Costa Rica.Correspondencia: morozc@una.ac.cr, Víctor Álvarez C, M. Sc| Universidad Nacional de Costa Rica. Escuela de Medicina Veterinaria. Laboratorio de Parasitología. Heredia, Costa Rica., Ana Jiménez R, Ph. D| Universidad Nacional de Costa Rica. Escuela de Medicina Veterinaria. Laboratorio de Parasitología, Heredia, Costa Rica., Óscar Acuña N, M. Sc| Universidad de Costa Rica. Centro de Investigaciones Agronómicas. Laboratorio de Bioquímica de procesos orgánicos. San José, Costa Rica.
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