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Updated: Jan 29, 2026

Monitoring Colony-level Effects of Sublethal Pesticide Exposure on Honey Bees

Monitoring Colony-level Effects of Sublethal Pesticide Exposure on Honey Bees

Published on: November 15, 2017

ハチミツバチにおける慢性的な熱ストレスは採餌意欲を阻害する

Olga Frunze¹, Hyunjee Kim¹, Soon Ok Woo²

¹Department of Life Sciences & Convergence Research Center for Insect Vectors (CRCIV), Incheon National University R&D Complex, 265 Harmony-ro, Yeonsu-gu, Incheon 22014, the Republic of Korea.

Journal of insect physiology

|January 27, 2026

Abstract:

Pollinator mortality is a global concern linked to climate change; however, the complex responses underlying heat stress in honey bees are not yet fully understood. This study investigated the impact of chronic heat stress on honey bee appetitive motivation and related physiological processes that are essential for colony functioning. From June to October 2022 and April to October 2023, bees were exposed to 25°C (Group 25) and 35°C (Group 35) in controlled environments, with a Group Control kept under natural conditions. We evaluated sucrose responsiveness as an appetitive indicator, colony performance in late summer, four physiological traits, and eleven molecular markers. Nine genes were heat-sensitive, including those linked to maturity, aging (AmMblk-1, Amfor), and cognition (JHAMT, AmOctaR1). Foragers from Group 35 showed reduced sensitivity to low-sucrose solutions, potentially impairing food collection. This behavioral deficit likely contributed to poor honey stores and reduced colony development. Our findings suggest that chronic heat stress can impair honey bee foraging motivation and efficiency, posing a risk to colony health. These results underscore the broader ecological consequences of rising global temperatures for pollinators.

キーワード:

セイヨウミツバチ気候変動コロニーのパフォーマンス採餌行動分子マーカー意欲花粉媒介者

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