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Effect of age, female mating status and density on the banana weevil response to aggregation pheromone

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Title Effect of age, female mating status and density on the banana weevil response to aggregation pheromone
 
Creator Tinzaara, W.
Gold, C.S.
Dicke, M.
Huis, A. van
Ragama, P.E.
 
Subject BIOASSAYS
COSMOPOLITES SORDIDUS
EXPERIMENTATION
MUSA
PESTS OF PLANTS
PHEROMONES
 
Description The banana ( Musa spp.) weevil ( Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) is a major pest in East Africa causing yield losses of up to 14 metric tonnes per hectare annually. Laboratory and field experiments were conducted to determine whether the response of the banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) to its aggregation pheromone was influenced by age, female mating status and weevil density. Laboratory bioassays were conducted using a double pitfall olfactometer, while a bucket pitfall trap was used in field experiments. There was no significant (P>0.05) difference in response to pheromone between immature and mature weevils (males and females) in laboratory bioassays. Forty-day-old weevils had a stronger response to the pheromone than 10-day-old ones under field conditions. The response of unmated weevils to the pheromone was stronger than that of mated weevils, both in the laboratory and field. The percentage of unmated and mated weevils recaptured from 0 and 3 m were similar but significantly different from 6 m way from the pheromone baited trap. The response of the weevils to the pheromone was not significantly (P>0.05) influenced by its previous density.
Peer-reviewed
 
Date 2014-06-10T08:26:17Z
2014-06-10T08:26:17Z
2011
 
Type Journal Article
 
Identifier Tinzaara, W.; Gold, C.S.; Dicke, M. ; van Huis, A. Ragama, P.E. -2011-Effect of age, female mating status and density on the banana weevil response to aggregation pheromone-African Crop Science Journal v.19(2)-p. 105-116
1021-9730
https://hdl.handle.net/10568/35785
 
Language en
 
Format p. 105-116
 
Source African Crop Science Journal