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首页> 外文期刊>Journal of Tropical Forestry and Environment >Solar Radiation Alters Toxicity of Carbofuran: Evidence from Empirical Trials with Duttaphyrnus melanostictus
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Solar Radiation Alters Toxicity of Carbofuran: Evidence from Empirical Trials with Duttaphyrnus melanostictus

机译：太阳辐射改变了呋喃呋喃的毒性：来自黑腹侧柏的经验性试验的证据

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摘要

In the present study we investigated the potential of natural solar radiation to alter the toxicity of a commonly used carbamate pesticide, carbofuran, on tadpoles of the Common Asian Toad Duttaphrynus melanostictus. A single exposure trial was conducted over 96 hrs with three concentrations (150, 250 and 500 μgl-1) of photo-irradiated and non-irradiated carbofuran. Results show that photo-irradiation markedly reduced the toxicity of carbofuran as evident by its effects on three end points, i.e. mortality, growth and swimming activity. The mortality of tadpoles exposed to irradiated carbofuran was significantly lower than those exposed to the non-irradiated pesticide. Both treatment and control tadpoles showed a hormetic response for mortality. Tadpoles in irradiated tanks were also larger and more active than those in the control tanks. Photo-altered toxicity was evident at all three tested concentrations. The results of this study therefore signals caution when directly linking ?results of empirical trials to field scenarios and highlight the necessity to evaluate toxic effects of compounds under variable environmental conditions.
机译：在本研究中，我们研究了自然太阳辐射改变常见的亚洲蟾蜍Duttaphrynus melanostictus t上的一种常用氨基甲酸酯杀虫剂呋喃丹的毒性的可能性。在96小时内使用三种浓度（150、250和500μgl-1）的光辐照和未辐照的呋喃丹进行了一次暴露试验。结果表明，光辐射显着降低了呋喃丹的毒性，这一点从其对死亡率，生长和游泳活动性三个端点的影响中可以看出。暴露于辐照的呋喃丹的of的死亡率显着低于未辐照的农药的pesticide的死亡率。治疗and和对照t均显示出对死亡率的恶性反应。辐照水箱中的也比对照水箱中的更大，更活跃。在所有三个测试浓度下，光变毒性均很明显。因此，当将经验试验的结果直接与现场情况联系起来时，这项研究的结果表明了谨慎态度，并强调了在可变环境条件下评估化合物毒性作用的必要性。

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