基于酸盐的纳米输送系统通过多种暴露途径对哈尔蒙尼亚虫的幼虫产生潜在的毒性影响
Jiang Du1, Xiao-Han Yang1, Li-Jian Hao1
1College of Plant Protection, Ministry of Agriculture and Rural Affairs Key Laboratory of Lower Yellow River Crop Integrated Pest Management, Shandong Agricultural University, Tai'an, People's Republic of China.
Pest management science
|September 16, 2025
概括
微尺度 (MPs) 和纳米尺度 (NPs) 农药输送系统对像Harmonia axyridis.这样的掠食性昆虫具有不同的毒性. 虽然MP提供了一些安全益处,但这两种系统都带来了风险,需要对纳米农药进行彻底的生态安全评估.
科学领域:
- 农业科学 农业科学
- 环境毒理学环境毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 纳米杀虫剂的进步旨在提高杀虫剂的利用率,但对有益昆虫的环境风险未得到充分研究.
- 掠食性昆虫面临纳米农药的双重暴露风险,通过直接接触和猎物消费.
研究的目的:
- 开发和评估微尺度 (MPs) 和纳米尺度 (NPs) 交付系统,用于lambda-cyhalothrin (λ-Cy).
- 评估这些输送系统对掠食性昆虫Harmonia axyridis的毒理风险.
主要方法:
- 使用奇托,离子和甲来制造MP和NP,以提供λ-Cy.
- 对Harmonia axyridis幼虫进行接触毒性测定,以确定中位数致命度 (LC50).
- 二次暴露研究评估了纳米农药对Harmonia axyridis在虫上的掠食率的影响.
主要成果:
- 在MP中,LC50值高于NP和乳化缩物 (EC),这表明急性毒性较低.
- 腹部暴露于 λ-Cy 的毒性明显高于腹部暴露.
- 与对照组相比,MPs减少了60%的虫捕食,而NP和EC则抑制了90%以上的捕食.
结论:
- 微和纳米尺度的输送系统都对掠食性自然敌人带来潜在的毒理风险.
- 虽然MP可以在生物安全方面提供一些改善,但全面的风险评估对生态安全至关重要.
- 需要进一步的研究,以确保先进的农药输送系统的生态安全.
相关概念视频
01:36Types of Toxins
3.2K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
3.2K
01:26Toxic Reactions: Overview
1.8K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
1.8K