Journal of Applied Entomology (2015) 139, 660-668

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W. Vanhove, N. Vanhoudt, K.R.M. Bhanu, S. Abubeker, Y. Feng, M. Yu, P. Van Damme and A. Zhang (2015)
Geometric isomers of sex pheromone components do not affect attractancy of Conopomorpha cramerella in cocoa plantations
Journal of Applied Entomology 139 (9), 660-668
Abstract: The cocoa pod borer (CPB), Conopomorpha cramerella (Snellen), sex pheromone was previously identified as a blend of (E,Z,Z)- and (E,E,Z)-4,6,10-hexadecatrienyl acetates and corresponding alcohols. These pheromone components were synthesized by modification of an existing method and the relative attractiveness of synthetic blends that included different levels of non-target pheromone components and chemical purities was tested in a cocoa field using Delta traps. Male captures were not significantly different among traps baited with pheromone blends containing 5% to 47% (based on four identified pheromone components) of other geometric acetates [(E,Z,E)-, (Z,Z,Z)-, (Z,E,Z)- and (Z,E,E)-4,6,10-hexadecatrienyl acetates], indicating that C. cramerella males did not discriminate among the pheromone components and other geometric isomers in the blends. Therefore, neither antagonistic nor synergistic effects from other pheromone geometric isomers were observed. The modified synthetic pathway offers the prospect of more economical production of CPB sex pheromone. During 17 weeks when C. cramerella monitoring coincided with the main cocoa pod harvest period in 2013–2014, CPB trap catch data from some blends showed a good correlation with the number of pods with C. cramerella infestation symptoms.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Aijun Zhang

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Conopomorpha cramerella Cacao (Theobroma cacao)
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