| 草地贪夜蛾幼虫日龄及取食的食物对淡足侧沟茧蜂寄生效果的影响 |
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| 引用本文： | 巨学阳,薛蓉蓉,童璐,廖露,宋圆圆,曾任森,王杰.草地贪夜蛾幼虫日龄及取食的食物对淡足侧沟茧蜂寄生效果的影响[J].中国生物防治学报,2021,37(6):1126-1132. |
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| 作者姓名： | 巨学阳 薛蓉蓉 童璐 廖露 宋圆圆 曾任森 王杰 |
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| 作者单位： | 福建农林大学农学院/福建农林大学作物遗传育种与综合利用教育部重点实验室/福建农林大学闽台作物有害生物生态防控国家重点实验室, 福州 350002 |
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| 基金项目： | 国家自然科学基金（31701855，32171512）；中国博士后科学基金（2019M652237，2020T130099）；福建农林大学杰出青年基金（KXJQ17013）；闽台作物有害生物生态防控国家重点实验室开放课题基金（SKL2018009） |
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| 摘 要： | 为评估淡足侧沟茧蜂对草地贪夜蛾的防控效果，在室内环境条件下，研究了草地贪夜蛾幼虫寄主日龄和所取食食物对淡足侧沟茧蜂寄生效果的影响。结果表明，无论草地贪夜蛾幼虫取食人工饲料或玉米叶片，淡足侧沟茧蜂对3日龄和5日龄寄主幼虫的寄生率、结茧率、出蜂率及对寄主致死率均显著高于8日龄寄主。另外，在同日龄情况下，淡足侧沟茧蜂对取食玉米寄主的寄生率、结茧率以及子代出蜂率均高于寄生于取食人工饲料的幼虫上的相关指标。寄主取食不同食物会影响淡足侧沟茧蜂的寄生效果，且淡足侧沟茧蜂对5日龄草地贪夜蛾幼虫寄生效果较好。本结果可为室内条件下利用草地贪夜蛾幼虫扩繁淡足侧沟茧蜂，以及应用淡足侧沟茧蜂对草地贪夜蛾进行田间防控提供理论依据。
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| 关 键 词： | 淡足侧沟茧蜂 草地贪夜蛾 寄生 生物防治 玉米 |
| 收稿时间： | 2021-03-15 |
Influences of Larval Instars and Food of Spodoptera frugiperda Larvae on Parasitism of Microplitis palidpes |
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| JU Xueyang,XUE Rongrong,TONG Lu,LIAO Lu,SONG Yuanyuan,ZENG Rensen,WANG Jie.Influences of Larval Instars and Food of Spodoptera frugiperda Larvae on Parasitism of Microplitis palidpes[J].Chinese Journal of Biological Control,2021,37(6):1126-1132. |
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| Authors: | JU Xueyang XUE Rongrong TONG Lu LIAO Lu SONG Yuanyuan ZENG Rensen WANG Jie |
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| Affiliation: | Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops/State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops/College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | Effects of larval instars and food of Spodoptera frugiperda larvae on the parasitism of Microplitis palidpes on S. frugiperda larvae were investigated under the laboratory conditions. The results showed that, regardless of the food (artificial diet or corn leaves) of S. frugiperda larvae, the parasitism rate, cocooning rate, parasitoid emergence rate, and mortality rate of host larvae were significantly higher when the wasps parasitized on 3- and 5-day-old host larvae than when on 8-day-old host larvae. In addition, under the same host larval instars, the parasitism rate, cocooning rate and parasitoid emergence rate of the wasps parasitizing larvae fed corn leaves were higher than those of the wasps parasitizing larvae fed artificial diet. In general, host larval food influenced the parasitism of M. palidpes on the 5-day old S. frugiperda larvae, which was better than the parasitism on the other two host larval instars. The results can provide a theoretical basis for the use of S. frugiperda larvae to multiply M. palidpes in the insectary and the field application of M. palidpes to control of S. frugiperda. |
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| Keywords: | Microplitis palidpes Spodoptera frugiperda parasitism biological control corn |
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