Zhang Yan, Ren Jiameng, Cheng Shenhang
Department of Biological Science and Technology, Jinzhong University, Jinzhong 030619, China.
School of Life Science, Shanxi University, Taiyuan 030006, China.
Insects. 2025 Jul 7;16(7):698. doi: 10.3390/insects16070698.
, a key egg parasitoid for lepidopteran pest control, faces potential risks from neonicotinoid insecticides like acetamiprid used in integrated pest management (IPM). This study evaluated acetamiprid's acute and sublethal toxicity to and assessed population-level risks via species sensitivity distribution (SSD). Acute toxicity assays using glass-vial residues revealed a 24 h LC of 0.12 mg a.i. L for adults, three orders of magnitude below the maximum field rate (100 mg a.i. L). Sublethal exposure (1/2-1/100 LC) significantly reduced parasitism and emergence rates (NOEC = 2.3 μg a.i. L) but did not affect offspring survival. Acetamiprid also shortened offspring development at 11.5-57.5 μg a.i. L. SSD analysis identified as the most sensitive parasitoid to acetamiprid (HC/HC) = 0.11/5.88 mg a.i. L), with field rates (30-100 mg a.i. L) indicating a potentially affected fraction (PAF) of 76.8-97.9%. These findings underscore the need to integrate sublethal effects into pesticide regulations to conserve parasitoid-mediated ecosystem services.
作为鳞翅目害虫防治的关键卵寄生蜂，面临着来自综合害虫管理（IPM）中使用的新烟碱类杀虫剂（如啶虫脒）的潜在风险。本研究评估了啶虫脒对[具体物种名称未给出]的急性和亚致死毒性，并通过物种敏感性分布（SSD）评估了种群水平的风险。使用玻璃小瓶残留进行的急性毒性试验显示，成虫的24小时半数致死浓度（LC）为0.12毫克有效成分/升，比最大田间施用量（100毫克有效成分/升）低三个数量级。亚致死暴露（1/2 - 1/100 LC）显著降低了寄生率和羽化率（无可见效应浓度 = 2.3微克有效成分/升），但不影响后代存活。啶虫脒在11.5 - 57.5微克有效成分/升时也缩短了后代发育时间。SSD分析确定[具体物种名称未给出]是对啶虫脒最敏感的寄生蜂（半数致死浓度/半数有效浓度 = 0.11/5.88毫克有效成分/升），田间施用量（30 - 100毫克有效成分/升）表明潜在受影响比例（PAF）为76.8 - 97.9%。这些发现强调了将亚致死效应纳入农药监管以保护寄生蜂介导的生态系统服务的必要性。
