草地贪夜蛾（Spodoptera frugiperda）与东方粘虫（Mythimna separata）种间竞争的室内模拟研究

doi:10.14088/j.cnki.issn0439-8114.2022.06.011

湖北农业科学 ›› 2022, Vol. 61 ›› Issue (6): 61-65.doi: 10.14088/j.cnki.issn0439-8114.2022.06.011

草地贪夜蛾（Spodoptera frugiperda）与东方粘虫（Mythimna separata）种间竞争的室内模拟研究

常向前¹, 吕亮¹, 许冬¹, 万鹏¹, 张舒¹, 苏海燕²

1.湖北省农业科学院植保土肥所/农业农村部华中作物有害生物综合治理重点实验室/农作物重大病虫草害防控湖北省重点实验室,武汉 430064;
2.沙洋县农业农村局,湖北沙洋 448200

收稿日期:2021-11-22 出版日期:2022-03-25 发布日期:2022-04-18
通讯作者: 张舒,研究员,主要从事病虫害综合治理研究,（电子信箱）ricezs6410@163.com。
作者简介:常向前（1979-）,男,河南濮阳人,副研究员,博士,主要从事昆虫生态与综合防治的研究,（电话）027-88430557（电子信箱）whcxq2013@163.com。
基金资助:
湖北省农业科技创新行动项目（NYKJ2019011）; 湖北省农业科学院植保土肥所青年基金项目（2021ZTSQJ08）; 农作物重大病虫草害防控湖北省重点实验室开放课题（2020ZTSJJ1）

Simulation of the competition between Spodoptera frugiperda and Mythimna separata indoors

CHANG Xiang-qian¹, LYU Liang¹, XU Dong¹, WAN Peng¹, ZHANG Shu¹, SU Hai-yan²

1. Institute of Plant Protection and Soil Fertilizer/Key Laboratory of Central China Integrated Pests Management on Crops,Ministry of Agricultural and Rural Affairs/Hubei Key Laboratory for Crop Diseases and Insect Pests and Weeds Control, Hubei Academy of Agricultural Sciences, Wuhan 430064,China;
2. Shayang Agriculture and Rural Bureau,Shayang 448200, Hubei,China

Received:2021-11-22 Online:2022-03-25 Published:2022-04-18

摘要/Abstract

摘要： 研究草地贪夜蛾（Spodoptera frugiperda）和东方粘虫（Mythimna separata）在室内以不同的初始种群密度（50头草地贪夜蛾初孵幼虫+50头东方粘虫初孵幼虫;25头草地贪夜蛾初孵幼虫+50头东方粘虫初孵幼虫;10头草地贪夜蛾初孵幼虫+50头东方粘虫初孵幼虫）取食相同寄主时二者的种群竞争行为并分析原因。结果表明,在以小麦苗为寄主的条件下,当初始种群为50头草地贪夜蛾+50头东方粘虫时,混合后13 d,东方粘虫存活率为0,而草地贪夜蛾的存活率为51.0%;随着初始混合种群中草地贪夜蛾比例的下降,混合后13 d,各处理中东方粘虫的存活率逐渐增加,2种昆虫种群达到共存。在以玉米苗为寄主的条件下,当初始种群为50头草地贪夜蛾+50头东方粘虫时,混合后10 d,东方粘虫存活率即为0,而草地贪夜蛾的存活率为81.0%;随着初始混合种群中草地贪夜蛾比例的下降,混合后13 d,各处理中东方粘虫均不能完成幼虫历期,2种昆虫种群不能达共存。草地贪夜蛾和东方粘虫在相同生态位的种群竞争中,草地贪夜蛾具有明显的优势;无论寄主为小麦还是玉米,东方粘虫在与草地贪夜蛾的混合种群中每日存活率通常低于草地贪夜蛾及单独饲养的东方粘虫种群,甚至不能完成幼虫发育,造成东方粘虫种群可能被草地贪夜蛾取代。

关键词: 入侵生物, 草地贪夜蛾（Spodoptera frugiperda）, 东方粘虫（Mythimna separata）, 小麦, 玉米

Abstract: The objective was to study the competitive behaviors of larvae of Spodoptera frugiperda and Mythimna separata with different initial newly hatched larvae population densities （50 Spodoptera frugiperda+50 Mythimna separata; 25 Spodoptera frugiperda+50 Mythimna separata; 10 Spodoptera frugiperda+50 Mythimna separata） when they appeared simultaneously on the same plant, and analyzed the causes of the competitive behavior. When 50 newly hatched larvae of Spodoptera frugiperda and Mythimna separata were transferred to the wheat seedlings at the same time, the larvae survival rate of Mythimna separata was 0 after mixing 13 days, while that of Spodoptera frugiperda was 51.0%. The survival rate of Mythimna separata in the other two treatments gradually increased after mixing 13 days with the decrease of the proportion of Spodoptera frugiperda in the initial mixed population, and the two groups reached coexistence finally. When 50 newly hatched larvae of Spodoptera frugiperda and Mythimna separata were transferred to the maize seedlings at the same time, the larvae survival rate of Mythimna separata was 0 after mixing 10 days, while that of Spodoptera frugiperda was 81.0%. Mythimna separata could not complete the larval period after mixing 13 days in the other two treatments with the decrease of the proportion of Spodoptera frugiperda in the initial mixed population, and the two groups couldn't reach coexistence finally. Spodoptera frugiperda had a significant competition advantage when they were in same ecological niche. Whether the host was wheat or maize, the daily survival rate of Mythimna separata in the mixed population was usually lower than that of Spodoptera frugiperda and Mythimna separata raised alone, or even Mythimna separata couldn't complete the larval development, resulting in the very possible displacement by Spodoptera frugiperda.

Key words: invasive organisms, Spodoptera frugiperda, Mythimna separata, wheat, maize

中图分类号:

S435.1

常向前, 吕亮, 许冬, 万鹏, 张舒, 苏海燕. 草地贪夜蛾（Spodoptera frugiperda）与东方粘虫（Mythimna separata）种间竞争的室内模拟研究[J]. 湖北农业科学, 2022, 61(6): 61-65.

CHANG Xiang-qian, LYU Liang, XU Dong, WAN Peng, ZHANG Shu, SU Hai-yan. Simulation of the competition between Spodoptera frugiperda and Mythimna separata indoors[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(6): 61-65.

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草地贪夜蛾（Spodoptera frugiperda）与东方粘虫（Mythimna separata）种间竞争的室内模拟研究

Simulation of the competition between Spodoptera frugiperda and Mythimna separata indoors

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