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Comparison of three types of pheromone-baited flight Trap for the larger grain borer, Prostephanus truncatus (Horn)

Published online by Cambridge University Press:  19 September 2011

Julia A. F. Compton ,
Sian Floyd ,
Ken Acquaye  and
Robin Boxall
Julia A. F. Compton*
Affiliation:
MoFA/ODA Larger Grain Borer Project, Post-Harvest Development Unit, Ministry of Food and Agriculture, P.O. Box 165, Ho, Volta Region, Ghana
Sian Floyd
Affiliation:
Statistics Section, Natural Resources Institute, Chatham Maritime, Chatham ME4 4TB, UK
Ken Acquaye
Affiliation:
MoFA/ODA Larger Grain Borer Project, Post-Harvest Development Unit, Ministry of Food and Agriculture, P.O. Box 165, Ho, Volta Region, Ghana
Robin Boxall
Affiliation:
MoFA/ODA Larger Grain Borer Project, Post-Harvest Development Unit, Ministry of Food and Agriculture, P.O. Box 165, Ho, Volta Region, Ghana
*
*Corresponding author: JAFC.
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Abstract

Three designs of pheromone-baited flight trap for the larger grain borer, Prostephanus truncatus (Horn) were compared in a daily-trapping trial in Ghana. Japanese-beetle (JB)-type traps, composed of a funnel surmounted by a cross-vane, captured two to three times more beetles than delta- and box-type sticky traps, which are currently the most commonly used designs. Japanese beetle traps have now been adopted by the Ghana National Trapping Network for P. truncatus. The higher efficiency of the JB traps has led to the discovery of the borer in two important maize-growing areas which had previously recorded zero catches using sticky delta-type traps. Analysis of correlation between replicates suggested that JB traps were the most consistent of the three trap designs (r = 0.88). The mode of entry of P. truncatus adults into different trap types, which may explain variations in catches from the different traps, is discussed.

Résumé

Trois formes de pièges de vol appâtes de phéromone pour le plus grand foreur de grains, Prostephanus truncatus (Horn) furent comparés dans un essai de piégeage journalier au Ghana. Le piège à coléoptères japonais (JB), composé d'unentonnoir surmonté d'une hélice, captura deux à trois fois plus de coléoptères que les pièges collants des types delta et boîte, qui sont actuellement les formes les plus communément utilisées. Les pièges à coléopteres japonais ont maintenant été adoptés par le Réseau National de Piégeage du Ghana pour P. truncatus. La plus haute efficience des pièges à coléoptères japonais ont conduit à la découverte du foreur dans deux importantes régions de culture de maïs qui avaient précédemment enregistré une capture nulle en utilisant des pièges de type delta. L'analyse de corrélation des expériences répétées ont suggéré que les pièges à coléoptères japonais étaient les plus consistants des trois formes (r = 0.88). Le mode d'entrée des adultes de P. truncatus dans les différents types de pièges, qui pourrait expliquer les variations dans les captures des différents pièges, est discuté.

Keywords

larger grain borerProstephanus truncatuspheromone trapsle plus grand foreur de grainsProstephanus truncatuspièges à phéromones
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 17 , Issue 2 , June 1997 , pp. 205 - 211
Copyright
Copyright © ICIPE 1997

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