Effect of aqueous and oil-based formulations of 13 native isolates of Beauveria bassiana (Ascomycota) on Rhodnius prolixus (Triatominae) under experimental conditions

Authors

  • Dalmiro Cazorla Perfetti Laboratorio de Entomología, Parasitología y Medicina Tropical (L.E.P.A.M.E.T.), Centro de Investigaciones Biomédicas (C.I.B.), Universidad Nacional Experimental «Francisco de Miranda» (UNEFM), Estado Falcón
  • Pedro Morales Moreno Laboratorio de Entomología, Parasitología y Medicina Tropical (L.E.P.A.M.E.T.), Centro de Investigaciones Biomédicas (C.I.B.), Universidad Nacional Experimental «Francisco de Miranda» (UNEFM), Estado Falcón

DOI:

https://doi.org/10.15381/rivep.v27i4.12564

Keywords:

biorational control, Beauveria bassiana, Chagas disease, Rhodnius prolixus, oil-based formulations

Abstract

Rhodnius prolixus is the main vector of Chagas disease in Venezuela. The present study aimed to evaluate the effect of aqueous and 50% soy bean oil-based formulations (1x107 conidia/ml) of 13 native Beauveria bassiana (Fungi: Ascomycota) isolates on fourth instar nymphs of Rhodnius prolixus. The conidial suspension were used under laboratory conditions (26 ºC; RH >90%). The treatment was by immersion and mortality and conidiation were evaluated daily for 24 days. The results showed that the fungal soy-bean oil formulations tested were more effective than the aqueous suspension, as attained significantly higher mortality and efficacy percentages and decreased LT50 in the 13 isolates (p88%). LF14 and LF13 isolates showed a higher percentage of accumulated mortality, efficacy and a lowest LT50 in aqueous formulations as well as in oil-based ones. These B. bassiana isolates appears to be considered as good candidates to be tested under field conditions in biorational control programmes for Chagas disease vectors.

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Published

2017-01-17

Issue

Vol. 27 No. 4 (2016)

Section

Artículos Primarios

License

Copyright (c) 2017 Dalmiro Cazorla Perfetti, Pedro Morales Moreno

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How to Cite

Cazorla Perfetti, D., & Morales Moreno, P. (2017). Effect of aqueous and oil-based formulations of 13 native isolates of Beauveria bassiana (Ascomycota) on Rhodnius prolixus (Triatominae) under experimental conditions. Revista De Investigaciones Veterinarias Del Perú, 27(4), 771-782. https://doi.org/10.15381/rivep.v27i4.12564