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Does pheromone-based aggregation of codling moth larvae help procure future mates?

Bruce Duthie1, Gerhard Gries, Regine Gries

  • 1Centre for Environmental Biology, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.

Journal of Chemical Ecology
|May 10, 2003
PubMed
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Codling moth (Cydia pomonella) larvae aggregate to cocoon, facilitating mating. This behavior, driven by larval attraction and differential pupal development, ensures mating success upon adult female eclosion.

Area of Science:

  • Insect behavior
  • Chemical ecology
  • Pest management

Background:

  • The codling moth (Cydia pomonella) is a significant agricultural pest.
  • Understanding insect mating strategies is crucial for developing effective control methods.
  • Previous research focused on adult-stage communication for mate attraction.

Purpose of the Study:

  • To investigate the role of larval aggregation and pupal communication in codling moth mating.
  • To determine if communication occurs between different developmental stages for reproductive success.

Main Methods:

  • Field and laboratory bioassays were conducted.
  • Observations focused on larval cocooning behavior and pupal development.
  • Analysis of sex pheromone dissemination from female pupae was performed.

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Main Results:

  • Codling moth larvae aggregate during cocoon formation.
  • Foraging larvae are attracted to cocooning larvae and prepupae, but not pupae.
  • Male pupae develop faster than female pupae, and males are arrested by female sex pheromone before adult eclosion.

Conclusions:

  • Larval aggregation and pupal-adult communication are key strategies for codling moth mate procurement.
  • This study expands the understanding of insect mating, highlighting communication across developmental stages.
  • Findings suggest novel targets for pest management strategies based on pre-adult communication.