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Insecticidal effect of volatile compounds from plant materials of Murraya exotica against Red Imported Fire Ant Workers

机译:紫茉莉植物原料中挥发性化合物对红色火蚁工人的杀虫作用

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The effect of volatile compounds from the mashed fresh, fallen, and dried leaves of Murraya exotica on the behavior of red imported fire ant (Solenopsis invicta, RIFA) workers was investigated by fumigation toxicity bioassay. The volatile compounds from different mashed leaves (fresh, fallen, and dried leaves) of M. exotica were collected by solid-phase microextraction and identified by gas chromatography–mass spectrometry. β-Caryophyllene, α-cedrene, α-copaene, β-cubebene, and germacrene D were identified as major components of the volatile compounds. In exposure time from 1 d to 9 d, the mortality of RIFA increased from 5.00% to 100.00% (fresh leaves), 11.67% to 93.33% (fallen leaves), and 15.00% to 83.33% (dried leaves) in minor workers, whereas in major workers, the increases were from 13.33% to 93.33% (fresh leaves), 6.67% to 83.33% (fallen leaves), and 10.00% to 60.00% (dried leaves). The volatile compounds reduced the walking and grasping abilities and aggregation rate of RIFA workers. Results indicate that mashed leaves of M. exotica have potential for controlling RIFA.
机译:通过熏蒸毒性生物测定法研究了墨拉亚香exotic新鲜,落叶和干燥的捣碎叶片中的挥发性化合物对红火蚁(Solenopsis invicta,RIFA)工人行为的影响。通过固相微萃取法收集来自异国沙棘的不同捣碎叶(鲜叶,落叶和干叶)中的挥发性化合物,并通过气相色谱-质谱法进行鉴定。 β-石竹烯,α-雪松烯,α-copaene,β-cubbene和胚芽戊烯D被确定为挥发性化合物的主要成分。在1 d至9 d的暴露时间中,未成年工人的RIFA死亡率从5.00%增至100.00%(鲜叶),从11.67%增至93.33%(落叶),从15.00%增至83.33%(干叶),而在主要工人中,增加了13.33%至93.33%(鲜叶),6.67%至83.33%(落叶)和10.00%至60.00%(干叶)。挥发性化合物降低了RIFA工人的行走和抓握能力以及聚集率。结果表明,M.otica的捣碎叶具有控制RIFA的潜力。

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    《Sociobiology》 |2016年第2期|共页
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