浙江农业学报 ›› 2026, Vol. 38 ›› Issue (3): 541-550.DOI: 10.3969/j.issn.1004-1524.20250240

• 植物保护 • 上一篇    下一篇

不同光周期对斜纹夜蛾生殖行为的影响

薛倩1(), 吴梦露1, 孙清明2, 苏宏华1,*()   

  1. 1. 扬州大学 植物保护学院, 江苏 扬州 225009
    2. 广东省农业科学院 果树研究所, 农业农村部南亚热带果树生物学与遗传资源利用重点实验室, 广东 广州 510640
  • 收稿日期:2025-03-25 出版日期:2026-03-25 发布日期:2026-04-17
  • 作者简介:*苏宏华,E-mail:susugj@126.com
    薛倩,研究方向为病虫害综合治理技术与推广。E-mail:xueqian05192023@163.com
  • 通讯作者: 苏宏华
  • 基金资助:
    农业农村部南亚热带果树生物学与遗传资源利用重点实验室开放课题(212103)

Effects of different photoperiods on reproductive behavior of Spodoptera litura

XUE Qian1(), WU Menglu1, SUN Qingming2, SU Honghua1,*()   

  1. 1. College of Plant Protection, Yangzhou University, Yangzhou 225009, Jiangsu, China
    2. Key Laboratory of South Asian Tropical Fruit Tree Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Fruit Tree Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
  • Received:2025-03-25 Published:2026-03-25 Online:2026-04-17
  • Contact: SU Honghua

摘要:

为探究光周期变化对斜纹夜蛾(Spodoptera litura)生殖行为的影响,本文利用红外线摄像仪连续观察9个暗期,研究12 h光照∶12 h黑暗(12 L∶12 D)、16 h光照∶8 h黑暗(16 L∶8 D)和20 h光照∶4 h黑暗(20 L∶4 D)3个不同光周期处理对斜纹夜蛾成虫求偶、交配行为以及繁殖力的影响。结果显示:12 L∶12 D处理下,斜纹夜蛾在第2~6个暗期最为活跃;随着观察时间的延长,斜纹夜蛾的求偶次数、求偶时长、交配次数、交配时长、交配率和日产卵数量等参数值不断降低。斜纹夜蛾在20 L∶4 D处理下的求偶次数、求偶时长、交配次数、交配率和总产卵数量分别仅为12 L∶12 D处理的41.83%、32.84%、31.82%、45.83%、26.85%。通过光周期20 L∶4 D处理可影响斜纹夜蛾生殖行为,从而显著降低其产卵数量。

关键词: 斜纹夜蛾, 光周期, 生殖行为, 日产卵数量, 繁殖力

Abstract:

To investigate the effects of photoperiod changes on the reproductive behavior of Spodoptera litura, this study used infrared cameras to continuously observe nine scotophases, examining the impacts of three different photoperiod treatments: 12 h light∶12 h dark (12 L∶12 D), 16 h light∶8 h dark (16 L∶8 D) and 20 h light∶4 h dark (20 L∶4 D), on courtship, mating behavior, and fecundity of S. litura adults. The results showed that under the 12 L∶12 D treatment, S. litura was most active during the 2nd to 6th scotophases. With prolonged observation time, parameters such as courtship frequency, courtship duration, mating frequency, mating duration, mating rate, and daily egg production of S. litura continuously decreased. Under the 20 L∶4 D treatment, the courtship frequency, courtship duration, mating frequency, mating rate, and total egg production of S. litura were only 41.83%, 32.84%, 31.82%, 45.83%, and 26.85%, respectively, of those under the 12 L∶12 D treatment. The photoperiod treatment of 20 L∶4 D can affect the reproductive behavior of S. litura, thereby significantly reducing its egg production.

Key words: Spodoptera litura, photoperiod, reproductive behavior, daily egg production, fecundity

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