Field Evaluation of Red Palm Weevil Rhynchophorus ferrugineus Olivier Pheromone Lures
DOI:
https://doi.org/10.55446/IJE.2021.363Keywords:
Rhynchophorus ferrugineus, ferrugineol, co-attractants, pheromone traps, coconut palm, sugarcane, ethyl acetate, synergist, trap captures, male female ratioAbstract
The red palm weevil Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae) is a key pest of coconut. The efficiency of pheromone lures sourced from three countries along with natural (sugarcane) and synthetic (ethyl acetate) co-attractants, was tested in the infested coconut plantation. The results revealed that synergists and co-attractants are essential to sustain trapping efficiency. The best weevil captures were obtained when the pheromone trap had both the natural food bait (sugarcane) and the synthetic co-attractant (ethyl acetate). Pheromone traps with only ethyl acetate as a co-attractant led to lower captures as compared to pheromone traps with only the food bait (sugarcane). In general, the captures were female dominant with an overall male: female ratio of 1:1.35.
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