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首页> 美国卫生研究院文献>Scientific Reports >Fipronil application on rice paddy fields reduces densities of common skimmer and scarlet skimmer
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Fipronil application on rice paddy fields reduces densities of common skimmer and scarlet skimmer

机译：在稻田中施用非那农胺可降低普通撇渣器和猩红撇渣器的密度

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Several reports suggested that rice seedling nursery-box application of some systemic insecticides (neonicotinoids and fipronil) is the cause of the decline in dragonfly species noted since the 1990s in Japan. We conducted paddy mesocosm experiments to investigate the effect of the systemic insecticides clothianidin, fipronil and chlorantraniliprole on rice paddy field biological communities. Concentrations of all insecticides in the paddy water were reduced to the limit of detection within 3 months after application. However, residuals of these insecticides in the paddy soil were detected throughout the experimental period. Plankton species were affected by clothianidin and chlorantraniliprole right after the applications, but they recovered after the concentrations decreased. On the other hand, the effects of fipronil treatment, especially on Odonata, were larger than those of any other treatment. The number of adult dragonflies completing eclosion was severely decreased in the fipronil treatment. These results suggest that the accumulation of these insecticides in paddy soil reduces biodiversity by eliminating dragonfly nymphs, which occupy a high trophic level in paddy fields.
机译：几份报告表明，自1990年代以来日本就注意到蜻蜓种类减少的原因是水稻幼苗在育苗箱中施用了一些系统性杀虫剂（新烟碱和氟虫腈）。我们进行了稻田介观试验，以研究全身性杀虫剂可比丁，氟虫腈和氯吡虫啉对稻田生物群落的影响。施用后3个月内，稻田水中所有杀虫剂的浓度均降至检测限。但是，在整个实验期间都检测到了稻田土壤中这些杀虫剂的残留。浮游生物物种在施用后立即受到可比尼丁和氯氰菊酯的影响，但浓度降低后它们就恢复了。另一方面，氟虫腈的治疗效果，特别是对Odonata的效果，比其他任何治疗方法都大。在氟虫腈治疗中，完成羽化的成年蜻蜓数量大大减少。这些结果表明，这些杀虫剂在稻田土壤中的积累通过消除蜻蜓若虫而减少了生物多样性，而蜻蜓若虫在稻田中的营养水平很高。

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