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Occurrence and distribution of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) in Zimbabwe

Published online by Cambridge University Press:  21 December 2010

L.D.M. Nyagwaya ,
B.M. Mvumi  and
I.G.M. Saunyama
L.D.M. Nyagwaya
Affiliation:
Department of Research and Specialist Services, PO Box CY 550, Causeway, Harare, Zimbabwe Department of Crop Science, Faculty of Agriculture, University of Zimbabwe, PO Box MP 167, Mount Pleasant, Harare, Zimbabwe
B.M. Mvumi*
Affiliation:
Department of Soil and Agricultural Engineering, Faculty of Agriculture, University of Zimbabwe, PO Box MP 167, Mount Pleasant, Harare, Zimbabwe
I.G.M. Saunyama
Affiliation:
Department of Research and Specialist Services, PO Box CY 550, Causeway, Harare, Zimbabwe
*
*E-mail: mvumibm@hotmail.com; mvumibm@agric.uz.ac.zw
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Abstract

The study sought to confirm reports by farmers and agricultural extension personnel of Prostephanus truncatus (Horn) attacking harvested maize in Mashonaland West and Mashonaland Central provinces of Zimbabwe and to map out, using pheromone trap catch data, the distribution of the pest in the country. A survey of 296 respondents confirmed the presence of P. truncatus in five districts of the provinces. Some respondents reported that the first few sightings of the pest were in 2005 or earlier, while the majority mentioned the 2006/2007 storage season. The map showed a more concentrated distribution of P. truncatus in the northern part of the country moving further inland towards the central and eastern parts of Zimbabwe, indicating possible spread of the pest from the neighbouring countries Zambia and Mozambique. The results of the study indicate legitimate concerns over food security with respect to stored maize grain and seed. The occurrence of P. truncatus in the country has serious implications on training of extension agents and packaging of extension messages that need to be disseminated to the farming community to reduce the impact of the pest. This is the first evidence-based and official documented report of P. truncatus occurrence in Zimbabwe.

Keywords

Prostephanus truncatusstored maizefood securityextensionpest distributionpheromone trappingsurveyZimbabwe
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 30 , Issue 4 , December 2010 , pp. 221 - 231
Copyright
Copyright © ICIPE 2010

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