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July 2, 2026ApidologieOpen Access

Honey bees are more vulnerable to amitraz under organophosphate insecticide exposure

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Authors

MEMojtaba EsmaeilyAndong National UniversityTBTekalign BegnaAndong National UniversityDUDelgermaa UlziibayarAndong National University

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Overview

Randomized trial investigates pesticide interactions reducing honey bee survival, suggesting urgent risk assessments are needed.

Key Points

  • This study examines how organophosphate insecticides combined with amitraz affect honey bee health.
  • Conducted acute oral toxicity assays to evaluate pesticide effects on honey bees.
  • Analyzed gene expression related to detoxification and oxidative stress post-exposure.
  • Used multiple treatment groups to assess synergy between pesticides and in-hive acaricides.
  • Dimethoate was the most toxic (LC₅₀ = 2.6 ppm), followed by chlorpyrifos (56.3 ppm) and amitraz (432.3 ppm).
  • Co-exposure to organophosphates and amitraz significantly reduced honey bee survival compared to single treatments.
  • Vitellogenin expression was suppressed under mixture treatments, while detoxification genes were upregulated.

Cite This Study

Esmaeily et al. (2026) studied this question.

synapsesocial.com/papers/6a4600a29ed1343031310c56https://doi.org/10.1007/s13592-026-01285-1
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Also Consider

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