利用斜纹夜蛾规模化繁育夜蛾黑卵蜂的初步研究

doi:10.16409/j.cnki.2095-039x.2021.09.027

摘要/Abstract

摘要： 夜蛾黑卵蜂Telenomus remus Nixon是夜蛾科害虫的重要卵期寄生性天敌，可用于草地贪夜蛾Spodoptera frugiperda的生物防治。为了提高夜蛾黑卵蜂规模化繁育的生产效率，本文研究了利用斜纹夜蛾S. litura繁育夜蛾黑卵蜂时寄主卵龄、寄主产卵时间和蜂卵比对夜蛾黑卵蜂寄生率和羽化率的影响。结果表明：斜纹夜蛾卵龄对夜蛾黑卵蜂羽化率有显著影响，卵龄为1日龄时羽化率高达90.81%，显著高于2日龄和3日龄的斜纹夜蛾卵；夜蛾黑卵蜂对产卵时间在1~7 d内的斜纹夜蛾卵具有较高的寄生效率，寄生率均在97.5%以上，羽化率均在82%以上，显著高于7 d后产的卵；当蜂卵比为1：30和1：50时，寄生率和羽化率最高，分别可达到99%和80%以上，均显著高于1：70和1：100的处理。研究结果显示，选用斜纹夜蛾成虫羽化后前7 d产的1日龄卵，蜂卵比为1：50繁育夜蛾黑卵蜂生产效率最佳。

关键词: 夜蛾黑卵蜂, 斜纹夜蛾, 草地贪夜蛾, 规模化繁育

Abstract: Telenomus remus Nixon is an important egg parasitoid of noctuid pests and has the potential for the biological control of Spodoptera frugiperda. To improve the production efficiency of mass rearing T. remus using S. litura, the study investigated the effects of host egg age, the deposition time of host eggs, and the wasp-host ratio on parasitism rate and offspring emergence rate of T. remus. The results indicated that the age of S. litura eggs had a significant effect on the emergence rate of T. remus. The offspring emergence rate of T. remus was as high as 90.81% when T. remus mothers parasitized on 1-day-old host eggs, significantly higher than that from 2- and 3-day-old host eggs. The parasitism rate and emergence rate of T. remus were more than 97.5% and 82%, respectively, on S. litura eggs laid by adults within 7 days old, which were higher than those on the eggs laid by females older than 7 days. When the wasp-host ratio was 1:30 or 1:50, T. remus had high parasitism rate and emergence rate, above 99% and 80%, respectively, which were significantly higher than the counterparts from the treatments of wasp-host ratio of 1:70 and 1:100. From the perspective of production efficiency, this study suggests that the 1-day-old eggs laid by S. litura adults within 7 days old can be used for mass rearing of T. remus at a wasp-host ratio of 1:50.

Key words: Telenomus remus, Spodoptera litura, Spodoptera frugiperda, mass rearing

中图分类号:

S476.3

谢永辉, 王春娅, 陈雅琼, 石萍丽, 詹莜国, 王志江, 吴志美, 吴国星, 史爱民. 利用斜纹夜蛾规模化繁育夜蛾黑卵蜂的初步研究[J]. 中国生物防治学报, 2021, 37(6): 1146-1151.

XIE Yonghui, WANG Chunya, CHEN Yaqiong, SHI Pingli, ZHAN Youguo, WANG Zhijiang, WU Zhimei, WU Guoxing, SHI Aimin. A Preliminary Study of Mass Rearing Telenomus remus Nixon on Spodoptera litura[J]. Chinese Journal of Biological Control, 2021, 37(6): 1146-1151.

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