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Related Experiment Video

Updated: Mar 17, 2026

Author Spotlight: Evaluation of Entomopathogenic Fungi in Wild Monochamus alternatus Populations for Biocontrol Applications in Forest Wood Borers
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Palm Weevil Pheromones - Discovery and Use.

A C Oehlschlager1

  • 1ChemTica Internacional, Apdo. 640-3100, Sto. Domingo, Heredia, 40603, Costa Rica. cam@chemtica.com.

Journal of Chemical Ecology
|July 20, 2016
PubMed
Summary

Aggregation pheromones and plant baiting effectively control major pest weevils. Mass trapping significantly reduces weevil populations and associated crop damage in palm plantations.

Area of Science:

  • Agricultural Entomology
  • Chemical Ecology
  • Pest Management

Background:

  • Rhynchophorinae weevils are significant agricultural pests.
  • Male-produced aggregation pheromones are key to weevil communication.
  • Existing management strategies require enhancement.

Purpose of the Study:

  • Identify and characterize aggregation pheromones for pest weevils.
  • Evaluate the efficacy of semiochemically-based mass trapping.
  • Assess the integration of pheromone traps with other control methods.

Main Methods:

  • Identification of methyl-branched secondary alcohols as aggregation pheromones.
  • Development of pheromone-based traps, including stereoisomeric mixtures.
  • Addition of fermenting plant material to enhance trap attractiveness.
Keywords:
Canary palmDate palmMass trappingOil palmRhynchophorus – pheromones

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  • Field trials assessing trap densities and impact on pest populations.

    • Main Results:

    • Aggregation pheromones for seven major pest weevils identified.
    • Stereoisomeric mixtures are effective in traps due to lack of inhibition.
    • Mass trapping significantly reduced pest weevil populations and disease incidence.
    • Successful application in oil palm and date palm plantations across different regions.

    Conclusions:

    • Semiochemically-based mass trapping is a mature and economically feasible control technology for Rhynchophorinae weevils.
    • Integration with phytosanitary practices enhances management effectiveness.
    • Pest weevil control using pheromone-based strategies is adaptable to various agricultural and urban settings.