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Updated: Jul 10, 2026
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Bioassays for Monitoring Insecticide Resistance
Published on: December 30, 2010
Behavioral Resistance in Varroa destructor: First Evidence in Response to Acaricide?
Théa Missud1,2, Max Watkins3, Paulo Damian Mielgo3
1Centre d'Etudes Biologiques de Chizé, UMR-CNRS 7372, La Rochelle Université, Villiers-en-Bois, France.
Archives of Insect Biochemistry and Physiology
|July 8, 2026
Summary
Varroa destructor mites may exhibit behavioral resistance to certain treatments, showing avoidance of tau-fluvalinate in some populations. This discovery highlights the need to consider mite behavior in pest control strategies.
Area of Science:
- Entomology
- Pest Management
- Animal Behavior
Background:
- Varroa destructor is a major honey bee parasite and viral vector.
- Resistance to acaricides is a growing problem in Varroa destructor populations.
- Behavioral resistance mechanisms in Varroa destructor are poorly understood.
Purpose of the Study:
- To investigate behavioral resistance in Varroa destructor populations.
- To assess mite responses to three common acaricides: amitraz, tau-fluvalinate, and oxalic acid.
- To explore potential behavioral avoidance of acaricides as a resistance mechanism.
Main Methods:
- Y-maze olfactometric assays were used to test mite behavior.
- Five French Varroa destructor populations with different treatment histories were studied.
- Mite choices between acaricide/solvent pairs were recorded after 18 hours.
Main Results:
- Significant avoidance of tau-fluvalinate was observed in two out of five populations.
- This avoidance behavior in Varroa destructor is reported for the first time.
- No avoidance was detected for amitraz or oxalic acid, and no phenotypic resistance correlated with avoidance.
Conclusions:
- Behavioral resistance to acaricides, specifically tau-fluvalinate, may exist in French Varroa destructor populations.
- This behavioral resistance is not systematic across all populations or acaricides.
- Understanding mite behavior is crucial for developing effective Varroa destructor control strategies.
