昆虫学报 ›› 2019, Vol. 62 ›› Issue (7): 849-856.doi: 10.16380/j.kcxb.2019.07.008

• 研究论文 • 上一篇    下一篇

二化螟雄蛾交配行为与精巢大小的关系

冯波1, 郭前爽2, 姚晓明3, 李迪4, 程建军2, 陈庆华5, 杜永均2,*   

  1. (1. 温州医科大学健康与环境生态研究所, 浙江温州 325035; 2. 浙江大学农药与环境毒理研究所, 杭州 310058; 3. 浙江省植物保护检疫局, 杭州 310029; 4. 黄岩区农业技术推广中心, 浙江台州 318020; 5. 四川省农业科学院植物保护研究所, 农业部西南作物有害生物综合治理重点实验室, 成都 610066)
  • 出版日期:2019-07-20 发布日期:2019-07-09

Association between the mating activity and testicular volume of male moths of Chilo suppressalis (Lepidoptera: Pyralidae)

FENG Bo1, GUO Qian-Shuang2, YAO Xiao-Ming3, LI Di4, CHENG Jian-Jun2, CHEN Qing-Hua5, DU Yong-Jun2,*   

  1. (1. Institute of Health and Environmental Ecology, Wenzhou Medical University, Wenzhou,Zhejiang 325035, China; 2.Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, China; 3. Zhejiang Provincial Plant Protection and Quarantine Bureau, Hangzhou 310029, China; 4. Agricultural Technology Extension Center of Huangyan District, Taizhou, Zhejiang 318020, China; 5. Key Laboratory of Integrated Management of Crop Pests in Southwest China, Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China)
  • Online:2019-07-20 Published:2019-07-09

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摘要：

 【目的】为了明确二化螟Chilo suppressalis雄蛾交配行为与精巢大小的关系，阐明信息素群集诱杀防治二化螟的有效性。【方法】本研究通过测定和比较不同日龄、交配状态以及性信息素诱捕的二化螟雄蛾精巢体积，建立精巢体积与雄蛾发育及交配状态的相关性。【结果】雄蛾日龄显著影响二化螟的交配，刚羽化(0日龄)雄蛾的交配率较低，1日龄雄蛾的交配率最高，之后随着日龄增加交配率逐渐降低。精巢体积与二化螟雄蛾日龄之间存在显著的负相关性。同一日龄交配的二化螟雄蛾的精巢体积显著大于未交配雄蛾；性诱捕器诱捕雄蛾的精巢体积显著大于未被性诱捕器诱捕雄蛾，与已交配雄蛾的精巢体积相似。交配之后，精巢的发育过程和未交配雄蛾相似。田间性信息素引诱二化螟雄蛾精巢体积小于0-1日龄未交配雄蛾，大于2-6日龄未交配雄蛾。【结论】本研究结果表明,二化螟雄蛾对雌蛾性信息素的反应与其精巢大小存在正相关性；性信息素引诱的二化螟雄蛾具有更强的性信息素反应能力，同时性信息素引诱的大部分雄蛾为未交配状态；交配过程并不影响二化螟雄蛾精巢体积，也不影响精巢发育。二化螟交配能力与精巢大小的关系在理论上解释了性信息素群集诱杀二化螟的防控有效性，并为其他蛾类昆虫的交配研究提供依据。

关键词: 二化螟, 精巢, 精巢体积, 交配状态, 性信息素, 日龄

Abstract: 【Aim】 To explore the relationship between the testicular volume and mating activity of male moths of the striped rice stem borer, Chilo suppressalis, and to evaluate the effectiveness of sex pheromone trapping in the pest management. 【Methods】 The testicular volume of different day-old male moths of C. suppressalis under different mating statuses and trapped by sex pheromone were measured and compared, and the relationship between the testicular volume and the developmental and mating statuses of male moths was established. 【Results】 The age (day-old) of male moths of C. suppressalis significantly affected their mating activity. The mating rate of the newly emerged (0-day-old) male moths was low, and the mating rate was the highest in the 1-day-old male moth and then decreased gradually as the age (day-old) of male moths increased. There was a significant negative correlation between the testicular volume and the age of male moths of C. suppressalis. The testicular volume of the mated male moths was significantly larger than that of the unmated male moths of the same age. The testicular volume of the male moths caught by pheromone traps was significantly larger than that of the untrapped male moths, but was as large as that of the mated male moths of the same age. The development of the testis in the mated moths was similar to that of the unmated individuals. The testicular volume of male moths caught by sex pheromone traps in the field was smaller than that of the unmated male moths of 0-1-day-old, but larger than that of the unmated male moths of 2-6-day-old. 【Conclusion】 The results indicate a positive correlation between the response of male moths of C. suppressalis to sex pheromone and their testicular volume. Male moths trapped by sex pheromone lures show stronger responding activity to sex pheromone, and most of individuals caught by sex pheromone traps are the unmated ones. Copulation does not affect the testicular volume and the development of the testis of male moths of C. suppressalis. The relationship between the mating ability and testicular volume of male moths of C. suppressalis explains the effectiveness of sex pheromone trapping in pest management, and provides a basis for the mating study of other moths.

Key words: Chilo suppressalis, testis, testicular volume, mating status, sex pheromone, age

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