African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6924

Full Length Research Paper

Irradiation as a quarantine treatment against Bactrocera invadens, in Mangifera indica, L. in Ghana

Bernard Tawiah Odai
  • Bernard Tawiah Odai
  • Department of Nuclear Agriculture and Radiation Processing, School of Nuclear and Allied Sciences, Ghana.
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David D. Wilson
  • David D. Wilson
  • Department of Animal Biology and Conservation Science, University of Ghana, Ghana.
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Franklin B. Apea Bah
  • Franklin B. Apea Bah
  • Radiation Technology Centre, BNARI, GAEC, Ghana.
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Wellington Torgby-Tetteh
  • Wellington Torgby-Tetteh
  • Department of Nuclear Agriculture and Radiation Processing, School of Nuclear and Allied Sciences, Ghana.
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Michael Yao Osae
  • Michael Yao Osae
  • Radiation Entomology and Pest Management Centre, BNARI, GAEC, Ghana
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  •  Received: 02 November 2013
  •  Accepted: 15 May 2014
  •  Published: 22 May 2014

Abstract

The detection of the African invader fly, Bactrocera invadens, in Ghana has led to limitations in the mango export industry. The limitations ranging from increased control costs to rejection of exports has necessitated studies in the area of quarantine treatment. A study was conducted to ascertain the effective dose of gamma irradiation for the control of B. invadens in fruits intended for export. Pupae were obtained after incubation of mango fruits collected from various locations. Adults were reared out and 5 – 20 females were placed on fruits in cages and allowed to oviposit. Infested mangoes were then examined to determine larval infestation levels. Late instar (14-21 day old) larvae in fruits were irradiated at 15- 75 Gy to determine an effective dose for the control of B. invadens. The mortality of the fly was determined at the various doses to obtain a probit 9 figure of 70 Gy as the effective dose. Confirmatory tests using 3,050 larvae endorsed the effective dose as the probit 9 dose.

 

Key words: Gamma irradiation, Bactrocera invadens, mango fruits, mango industry.

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

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