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August 20, 2025Environmental Toxicology and Chemistry

Different concentrations of the insecticide thiamethoxam affects the midgut, behavior and causes oxidative stress in the stingless bee Partamona helleri Friese, 1900 (Hymenoptera: Meliponini)

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Authors

JMJoão Victor de Oliveira MottaDGDavy Soares GomesJCJuan Jesús Cruz

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Overview

Experimental analysis shows thiamethoxam alters behavior and induces oxidative stress in Partamona helleri, suggesting risks for bee health.

Key Points

  • Thiamethoxam exposure resulted in significant behavioral changes, including reduced travel distance and increased meandering activity.
  • Both sublethal concentrations, LC5 and LC50, were linked to oxidative stress, affecting detoxification and antioxidant enzyme levels.
  • Assessment involved oral exposure of bees to thiamethoxam for 72 hours, revealing harmful midgut alterations and cellular damage.
  • Findings indicate potential risks to health and survival of Partamona helleri bees, crucial for pollination and agriculture.

Cite This Study

Motta et al. (2025) studied this question.

synapsesocial.com/papers/68af4cdfad7bf08b1ead6897https://doi.org/10.1093/etojnl/vgaf212
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Systemic Assessment of Chronic Toxicity of Thiamethoxam on Honeybees (Apis mellifera)2025 · 4 citations
  2. 2Beyond Standard Protocols: Advanced Patented Technology for Comprehensive Toxicity Assessments in Neotropical Bees2026
  3. 3Chlorfenapyr-based insecticide causes multiple side effects on workers of the stingless bee Partamona helleri (Friese, 1900) (Hymenoptera: Apidae)2026
  4. 4Acute exposure to fungicide fluazinam induces cell death in the midgut, oxidative stress and alters behavior of the stingless bee Partamona helleri (Hymenoptera: Apidae)2024 · 16 citations
  5. 5Acute oral and contact toxicity of imidacloprid and thiamethoxam, and their commercial products, to the neotropical stingless bee <i>Melipona scutellaris</i>2025