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R. phoenicis occurs on a range of wild and cultivated palm trees (Palmae), mainly oil and coconut palms (Hill, 1983). Adult R. phoenicis occur year-round in tropical Africa where palms are present. The common breeding sites include stressed, wounded, dying and fallen palms. Adult R. phoenicis are good fliers and in immature stages the pest can be dispersed within infested palm tissue.
Adult R. phoenicis are attracted to the odour of feeding sites and to damaged palms, in which they lay their eggs. Hence, avoiding wounds during agronomic practices is crucial
Traps made from thinned or wild palms which are felled divert weevils away from cultivated palms
A number of chemical compounds stimulated strong antennal responses of the weevils, including ethyl acetate, ethyl propionate, isobutyl propionate, ethyl butyrate, and ethyl isobutyrate. These volatiles are all characteristic of fermenting oil and coconut palm trees
Carbaryl or similar insecticides can be injected into infested feeding galleries or into the trunk above infested regions (Hill, 1983).
A male-specific aggregation pheromone has been identified in R. phoenicis. Trapping studies in Côte d'Ivoire have demonstrated that synthetic blends of this aggregation pheromone are highly attractive in the field).
The synthetic aggregate pheromone, 3-methyl-4-octanol (phoenicol) is suitable as attractant. R. phoenicis produces and responds to only one of the four possible stereoisomers of 3-methyl-4-octanol (Gries et al., 1993; Rochat et al., 1993; 1995; Perez et al., 1994).
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