Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
Environ Monit Assess. 2010 May;164(1-4):273-8. doi: 10.1007/s10661-009-0891-z. Epub 2009 Apr 9.
Nematodes offer perspectives for ecotoxicological research as their characters and most of toxicity assessment focused on Caenorhabditis elegans. In order to enrich the limited numbers of nematode species used for toxicity test, this study assessed the subacute effects of copper and zinc to the life history characters of nematode Acrobeloides nanus. Compared with control, the 72-h effective concentration (EC)(50), EC(20), and EC(10) for reproduction in A. nanus were 1.35, 0.49, and 0.20 mg/L, respectively, for Cu and 829.46, 330.29, and 163.90 mg/L, respectively, for Zn. The EC(10) for growth at 72 h and 96 h of the 2nd generation in A. nanus were 1.13 and 0.97 mg/L, respectively, for Cu, and 353.46 and 284.20 mg/L, respectively, for Zn. During the exposure, the effect of copper-zinc on reproduction was less than additive, and the copper-zinc effect on growth changed from a synergistic to antagonistic.
线虫为生态毒理学研究提供了新视角，因为它们的特征和大多数毒性评估都集中在秀丽隐杆线虫上。为了丰富用于毒性测试的线虫种类的数量有限，本研究评估了铜和锌对线虫 Acrobeloides nanus 生活史特征的亚急性影响。与对照相比，铜对线虫繁殖的 72 小时有效浓度 (EC)(50)、EC(20) 和 EC(10) 分别为 1.35、0.49 和 0.20 mg/L，锌分别为 829.46、330.29 和 163.90 mg/L。铜对线虫第二代在 72 小时和 96 小时生长的 EC(10)分别为 1.13 和 0.97 mg/L，锌分别为 353.46 和 284.20 mg/L。在暴露期间，铜锌对线虫繁殖的影响小于加性，铜锌对线虫生长的影响从协同作用转变为拮抗作用。
