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首页> 外文期刊>Environmental toxicology and chemistry >TOXICITY OF SIX PESTICIDES TO COMMON FROG (RANA TEMPORARIA) TADPOLES
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TOXICITY OF SIX PESTICIDES TO COMMON FROG (RANA TEMPORARIA) TADPOLES

机译：六种农药对常见霜霉病（RANA TEMPORARIA）的危害

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摘要

Amphibian species inhabiting agricultural areas may be exposed to pesticides during their aquatic larval phase. We tested the toxicity of six commonly used pesticides on Rana temporaria spawn and tadpoles. In acute tests, tadpoles were exposed to relatively high concentrations of azoxystrobin, cyanazine, esfenvalerate, MCPA ([4-chloro-2-methylphenoxy] acetic acid), per-methrin, and pirimicarb for 72 h. Chronic exposure tests were performed from fertilization to metamorphosis with azoxystrobin, cyanazine, and permethrin at concentrations similar to those found in surface waters in agricultural areas in Sweden. The most lethal pesticides in the acute exposure were azoxystrobin, permethrin, and pirimicarb. Also, negative effects on the growth of the tadpoles were observed with azoxystrobin, cyanazine, and permethrin. The chronic exposure at lower pesticide concentrations did not result in increased mortality or impaired growth. However, we found a positive effect of permethrin on growth and size at metamorphosis. The results suggest that the examined pesticides can inflict strong negative effects at high concentrations but have no or relatively weak effects on R. temporaria spawn or tadpoles at concentrations found in Swedish surface waters.
机译：居住在农业地区的两栖动物在其水生幼体阶段可能接触农药。我们测试了六种常用农药对蛙蛙产卵和t的毒性。在急性试验中，t暴露于相对较高浓度的嘧菌酯，氰嗪，乙草胺戊酸酯，MCPA（[4-氯-2-甲基苯氧基]乙酸），氯菊酯和嘧菌威72小时。从受精到变态的长期暴露试验使用了嘧菌酯，氰嗪和苄氯菊酯，其浓度与瑞典农业地区地表水中的浓度相似。急性暴露中最致命的农药是嘧菌酯，氯菊酯和吡虫威。另外，用a丙四醇，氰嗪和苄氯菊酯还可以观察到对negative生长的不利影响。在较低的农药浓度下长期接触不会导致死亡率增加或生长受损。但是，我们发现苄氯菊酯对变形时的生长和大小具有积极作用。结果表明，所检测的农药在高浓度下会产生强烈的负面影响，但在瑞典地表水中所发现的浓度下，它们对颞色罗非鱼的产卵或t则没有或相对较弱。

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