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微塑料污染对传染病媒介蚊子Aedes和Culex的发展产生不同影响
Chasen D Griffin1, Christine Tominiko2, Matthew C I Medeiros3
1Pacific Biosciences Research Center, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA; School of Life Sciences, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA.
Ecotoxicology and environmental safety
|November 4, 2023
概括
微塑料颗粒 (MPs) 伤害蚊子幼虫,增加了像白虫 (Aedes albopictus) 这样的物种的死亡率. 这种塑料污染对水生昆虫种群构成生态风险.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 微塑料颗粒 (MP) 是普遍存在的水生污染物.
- 蚊子具有水生生命阶段,容易接触微塑料.
- 携带疾病的蚊子物种可能会受到微塑料的影响.
研究的目的:
- 研究聚乙烯MPs对Aedes albopictus和Culex quinquefasciatus发育和生存的影响.
- 评估不同度的微塑料对早期蚊子幼虫的影响.
- 为了将发现与先前关于幼虫后期暴露于微塑料的研究进行比较.
主要方法:
- 实验室实验模拟蚊子产卵和幼虫发育的现场条件.
- 幼虫暴露于1-53微米聚乙烯MPs的混合物中,其度为60,600和6000MP/ml.
- 监测暴露组与对照组中的幼虫死亡率.
主要成果:
- 在暴露于MPs的Aedes albopictus和Culex quinquefasciatus中,早期阶段幼虫死亡率增加.
- 与Culex quinquefasciatus相比,Aedes albopictus在最低的MP度下显示出明显更高的死亡率 (37%在48小时内).
- 观察到不同物种对微塑料暴露的反应,特别是在较低度下.
结论:
- 暴露于微塑料对蚊子幼虫早期发育和生存有负面影响.
- 蚊子物种对微塑料污染的敏感性差异可能会改变生态相互作用.
- 高度的塑料污染物可以对水生昆虫种群产生选择性压力.
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