Department of System Ecotoxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig, Germany.
Bull Environ Contam Toxicol. 2011 Sep;87(3):231-7. doi: 10.1007/s00128-011-0342-8. Epub 2011 Jun 17.
In the present study we aimed to investigate whether UV-B radiation can exacerbate effects of pesticides fenoxycarb, pirimicarb, and tebufenpyrad on the survival, reproduction, and population growth rate of the standard test species Daphnia magna. We applied sublethal pesticides' concentrations and UV doses and observed no effects on survival. However, we observed synergistic effects of UV and pesticides on both cumulative reproduction and population growth rate (21 days) for fenoxycarb (100 μg/L) and pirimicarb (10 μg/L), but a less-than-additive effect for tebufenpyrad (5-10 μg/L). In the series exposed to UV and fenoxycarb or pirimicarb, the population growth rate dropped down to 0.1, while in the control series it was around 0.3. The results indicate that concentrations of some toxicants that are nontoxic in standard tests can cause harmful population-level effects when combined with UV.
在本研究中，我们旨在探讨紫外线-B 辐射是否会加剧农药苯氧威、扑灭威和噻虫嗪对标准测试物种大型溞生存、繁殖和种群增长率的影响。我们应用了亚致死浓度的农药和紫外线剂量，但未观察到对生存有任何影响。然而，我们观察到紫外线和农药对苯氧威（100μg/L）和扑灭威（10μg/L）的累积繁殖和种群增长率（21 天）具有协同作用，但对噻虫嗪（5-10μg/L）则表现为低于相加的效应。在暴露于紫外线和苯氧威或扑灭威的系列中，种群增长率下降到 0.1，而在对照系列中则约为 0.3。结果表明，在标准测试中无毒的某些有毒物质的浓度在与紫外线结合时可能会导致有害的种群水平效应。
