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Studies on the codling moth (Lepidoptera: Tortricidae) response to different codlemone release rates
S Vacas1, M Miñarro, M D Bosch
1Centro de Ecología Química Agrícola - Instituto Agroforestal del Mediterráneo (CEQA-IAM), Universitat Politècnica de València, Edificio 6C, 5 planta, Cmno de Vera s/n, 46022 Valencia, Spain.
Environmental Entomology
|November 28, 2013
Summary
Understanding codling moth (Cydia pomonella) response to pheromones is key for pest control. Optimal codlemone release rates were identified for effective trap formulations in areas without mating disruption.
Area of Science:
- Entomology
- Pest Management
- Chemical Ecology
Background:
- The codling moth (Cydia pomonella) is a significant agricultural pest.
- Pheromone-based monitoring and control strategies are crucial for managing codling moth populations.
- Understanding the dose-response relationship of codling moth to its primary pheromone, codlemone, is essential for optimizing lure efficacy.
Purpose of the Study:
- To investigate the impact of varying codlemone emission rates on codling moth trap catches.
- To determine optimal pheromone release profiles for effective codling moth attraction in field traps.
- To identify a suitable codlemone emission range for developing lures in the absence of mating disruption.
Main Methods:
- Field trials were conducted using pheromone-baited traps with different codlemone release rates.
- Moth catches were correlated with codlemone emission levels using multiple regression analysis.
- Pheromone release rates were quantified through residual codlemone extraction and gas chromatography.
Main Results:
- A preliminary trial showed a decreasing trend in moth captures with increasing pheromone levels.
- In subsequent trials, a logarithmic model described the correlation between trap catches and emission levels (11–1,078 μg/d).
- A decreasing linear trend in captures was observed between 11 and 134 μg/d; emission rates of 11–67 μg/d did not yield significantly different catches.
Conclusions:
- The study identified an optimal range of codlemone (11–67 μg/d) for effective codling moth attraction in traps.
- This emission range is suitable for developing lure formulations for monitoring or control when mating disruption is not employed.
- Results provide valuable data for optimizing pheromone-based pest management strategies for codling moth.
