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Revista de la Facultad de Ciencias Veterinarias

versión impresa ISSN 0258-6576

Resumen

PULIDO-MEDELLIN, Martín O et al. Evaluation of efficacy of MaF1309® strain of Metarhizium anisopliae in biological control of adult ticks Rhipicephalus microplus in Tunja, Colombia. Rev. Fac. Cienc. Vet. [online]. 2015, vol.56, n.2, pp.80-86. ISSN 0258-6576.

The livestock tick Rhipicephalus microplus is a high importance ectoparasite in cattle raised at tropical and sub-tropical regions producing direct losses since reduce meat and milk production and cause leather injury besides transmission of pathogenic agents such as Babesia bovis, Babesia bigemina y Anaplasma marginale. The chemical treatment has been effective to control tick  however the excessive use has selected resistant individuals; for that reason is important to develop new alternatives such as entomopathogen fungi to keep controlled those individuals. The objective of this research was to evaluate in vitro efficacy of M. anisopliae to control adult stage of R. microplus in Tunja, Colombia. The immersion test was used to evaluate efficacy of MaF1309® strain of M. anisopliae at concentrations of 1x104, 1x106 y 1x108 conidia/mL. The group of ticks treated with 1x108 conidia had 100% of mortality 14 post-treatment days (PT), otherwise 1x106 y 1x104 conidia/mL concentrations have 100% of mortality at 16 and 20 PT days, respectively. Mortality was directly proportional to fungus concentration used, the ticks treated with high concentrations reach high mortality in less time. Those in vitro results start in local information projected to design control programs for the department of Boyacá.

Palabras clave : Biological control; entomogenous fungi; Rhipicephalus microplus; Metarhizium anisopliae.

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