African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12502

Full Length Research Paper

Microbial control of caged population of Zonocerus variegatus using Beauveria bassiana and Metarhizium sp.

O.E. Fagade1, S.A. Balogun2 and C.J. Lomer3
  1Environmental and Biotechnology Unit, Department of Botany and Microbiology, University of Ibadan, Ibadan, Nigeria. 2Environmental Microbiology Unit, Department of Microbiology, Adekunle Ajasin University, Akungba-Akoko, Nigeria. 3International Institute for Tropical Agriculture, Biological Control and Functional Biodiversity Centre, BP 08-0932 Cotonou, Benin Republic.
Email: [email protected]

  •  Accepted: 13 October 2004
  •  Published: 31 January 2005

Abstract

 

Microbial control of caged populations of Zonocerus variegatus was carried out using indigenous fungal entomopathogens isolated from the grasshopper’s cadaver. Bioassay response indicated a dose-dependent mortality coupled with drastic reduction in food consumption among spores infected grasshoppers. Lethal time (LT50) of 4.6 days for 103 spores/ml and 3.8 days for 107 spores/ml of oil formulation of Beauveria bassianawere observed. While Metarhizium sp recorded LT50 of 9.0 days and 2.8 days for 103and 107 spores/ml, respectively. The results obtained were discussed in relation to use of the isolates in the control Z. variegatus infestation in forest agro-ecosystem of south west, Nigeria.

 

Key words: Microbial control, entomopathogenic fungi, Beauveria bassiana, Zonoccrus variegatus, Metarhizium sp.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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