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农业化学品在环境相关度下对昆虫的普遍次致命作用
Lautaro Gandara1, Richard Jacoby1, François Laurent2,3
1European Molecular Biology Laboratory, Heidelberg, Germany.
概括
杀虫剂对多种昆虫的行为和生存有重大影响. 这些影响因温度升高而加剧, 对昆虫群体构成威胁.
科学领域:
- 环境科学
- 毒理学
- 昆虫学
背景情况:
- 全球昆虫生物量正在减少, 气候变化和杀虫剂的使用被怀疑是驱动因素.
- 对各种化学物质对昆虫群体的影响有有限的系统研究.
研究的目的:
- 评估各种农业化学品的低致命剂量对昆虫行为和生理的影响.
- 研究温度对这些化学物质的负面影响.
主要方法:
- 使用了1024个分子的化学库,包括杀虫剂,除草剂,杀菌剂和植物生长抑制剂.
- 暴露在*Drosophila melanogaster*幼虫的次致命剂量和观察到对行为,生存能力,蛋白质组,发育和繁殖的影响.
- 评估其他昆虫物种的行为变化,如蚊子和蝶.
主要成果:
- 57%的测试化学物质影响了Drosophila melanogaster的幼虫行为,更高的百分比影响了长期生存.
- 致死后的暴露引起了广泛的蛋白变化以及发育和生殖的改变.
- 农业化学品的负面影响在升高的温度下被放大.
- 在多种昆虫中观察到类似的行为变化.
结论:
- 广泛暴露于杀虫剂可以显著改变昆虫的行为和生理.
- 这些变化对昆虫种群的长期生存构成重大威胁.
- 温度等环境因素可能会加剧农业化学品对昆虫的有害影响.
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