对2,4-二二酸的次致命暴露破坏了蜜蜂的哺乳和食行为
Hyunjee Kim1, Olga Frunze1, Kwang-Ho Kim2
1Department of Life Sciences & Convergence Research Center for Insect Vectors (CRCIV), Incheon National University R&D Complex, 265 Harmony-ro, Yeonsu-gu, Incheon, 22014, Republic of Korea.
Environmental pollution (Barking, Essex : 1987)
|February 8, 2025
概括
除草剂2,4-Dichlorophenoxyacetic acid (2,4-D) 通过损害哺乳和食行为来伤害蜜蜂. 低于致命的暴露会影响腺体大小,味觉和学习,影响殖民地的健康.
科学领域:
- 环境毒理学环境毒理学
- 养蜂科学 养蜂科学 养蜂科学
- 昆虫的行为昆虫的行为
背景情况:
- 2,4-二基酸 (2,4-D) 是一种广泛使用的除草剂.
- 它对蜜蜂 (Apis mellifera) 哺乳和食行为的影响尚不清楚.
- 蜜蜂的健康对农业和生态系统的稳定至关重要.
研究的目的:
- 量化 2,4-D 对蜜蜂的致命剂量 (LD50).
- 为了研究2,4-D对蜜蜂哺乳和食行为的次致命影响.
- 阐明2,4-D对蜜蜂的影响背后的生理和认知机制.
主要方法:
- 在蜜蜂的不同发育阶段,为2,4-D确定了LD50值.
- 在哺乳蜜蜂中评估了对下腺大小和基因表达 (AmGr10) 的亚致命影响.
- 评估了捕食蜜蜂的味觉反应,基因表达 (AmGr1),嗅觉学习和记忆,测量了AmOA1表达.
主要成果:
- LD50值因发育阶段而异,新出现的蜜蜂是最敏感的.
- 亚致命的2,4-D暴露减少了护士蜜蜂下腺的大小和AmGr10表达.
- 捕食蜜蜂表现出味觉敏感性受损,嗅觉学习和记忆力受损,与AmGr1和AmOA1表达率下降有关.
结论:
- 低于致命的2,4-D暴露显著破坏了蜜蜂关键的哺乳和食行为.
- 生理障碍 (腺体大小,基因表达) 和认知缺陷 (学习,记忆) 都会导致行为障碍.
- 这些影响对蜜蜂群体的健康和弹性构成重大威胁,对授粉服务产生影响.
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