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Field evaluation of synthetic sex pheromone traps for the cocoa mirid Sahlbergella singularis (Hemiptera: Miridae)

Mahob R.J., Babin R., Ten Hoopen G.M., Dibog L., Yédé, Hall D.R., Bilong C.F.B.. 2011. Pest Management Science, 67 (6) : p. 672-676.

DOI: 10.1002/ps.2107

Background: Field trapping experiments were conducted to evaluate the attractiveness of five different pheromone blends as well as the impact of trap design on attractiveness towards cocoa mirids, Sahlbergella singularis Hagl. and Distantiella theobroma (Dist.), in Cameroon. Results: A total of 361 adults of S. singularis (359 males and two females) were caught. The highest numbers of mirids were found in traps with pheromone blends that combined a monoester and a diester, compared with traps with the diester or the monoester individually and control traps with no pheromone. Rectangular traps caught significantly more mirids compared with delta traps. The mean number of 5.1mirids trap-1 year-1 caught in rectangular traps was significantly higher compared with the 1.8 mirids trap-1 year-1 for the delta traps. Conclusion: The data revealed that rectangular traps containing pheromone blends combining both themonoester and the diester have a good potential to lure and trap adult males of S. singularis on cocoa farms. The pheromone blends used were specific for S. singularis, and the use of pheromone traps appears to be a promising strategy for incorporation into integrated pest management strategies for the monitoring or even the control of S. singularis in cocoa plantations.

Mots-clés : miridae; sahlbergella; theobroma cacao; piège sexuel; phéromone sexuelle; cameroun; sahlbergella singularis; distantiella theobromae

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