数字农科院2.0

The Sublethal Effects of beta-Ecdysterone, a Highly Active Compound from Achyranthes bidentata Blume, on Grape Phylloxera, Daktulosphaira vitifoliae Fitch

文献类型： 外文期刊

作者： Liu, Yongqiang;Su, Junping;Liu, Zongjiang;Dhiloo, Khalid Hussain;Wang, Zhongyue;Yang, Fuqian;Pu, Hongtie;Dhiloo, Khalid Hussain

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期刊名称： PLOS ONE

ISSN： 1932-6203

年卷期： 2016 年 11 卷 11 期

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收录情况： SCI

摘要： Grape phylloxera, Daktulosphaira vitifoliae (Fitch) (Hemiptera, Phylloxeridae), is a very destructive insect pest of grapevines. Intercropping of Achyranthes bidentata Blume (f. Amaranthaceae) and Vitis spp. grapevines can be useful to control this pest. In the present study, the toxicity of 22 compounds, known to be present in A. bidentata, to grape phylloxera was evaluated. All treatments were toxic towards grape phylloxera but the degree of toxicity differed between treatments. Among the 22 tested compounds, several of which proved toxic towards grape phylloxera. However beta-ecdysterone had higher toxic effects against grape phylloxera, with LC50 values of 175.73 mg a.i. liter(-1). In addition, we assessed the sublethal effects of LC10, LC20 and LC40 of beta- ecdysterone on grape phylloxera. The fourth instar and adult developmental periods and total life span were significantly prolonged by LC40 of beta- ecdysterone. Fecundity decreased when grape phylloxera were exposed to LC20 and LC40 of beta- ecdysterone. In addition, LC40 of beta- ecdysterone decreased the intrinsic rate of increase (r(m)) and the finite rate of increase (.) and prolonged the population doubling time (DT). The net reproductive rate (R-0) was significantly reduced by both the LC20 and LC40 beta-ecdysterone treatments. Our results demonstrated that beta- ecdysterone had higher toxic effects and significant sublethal effects on grape phylloxera, and showed potential control of grape phylloxera.

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