Xinjiang Agricultural Sciences ›› 2023, Vol. 60 ›› Issue (9): 2291-2297.DOI: 10.6048/j.issn.1001-4330.2023.09.025

• Plant Protection·Microbes • Previous Articles     Next Articles

Effects of cadmium stress on juvenile hormone and molting hormone titers in Spodoptera exigua

WU Menglu1(), SUN Qingming2, WU Jiaojiao1, WANG Kai1, YANG Yang1, YANG Yizhong1, SU Honghua1()   

  1. 1. College of Horticulture and Plant Protection,Yangzhou University,Yangzhou Jiangsu 225009,China
    2. Key Laboratory of Biology and Genetic resources Utilization of Subtropical Fruit Trees, Ministry of Agriculture and Rural Areas / Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
  • Received:2022-11-21 Online:2023-09-20 Published:2023-09-19
  • Correspondence author: SU Honghua (1975-), female, associate professor, research direction for Green prevention and control technology of pests,(E-mail) susugj@126.com
  • Supported by:
    The Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs(212103)

重金属镉胁迫对甜菜夜蛾体内保幼激素和蜕皮激素滴度的影响

吴梦露1(), 孙清明2, 吴娇娇1, 王凯1, 杨旸1, 杨益众1, 苏宏华1()   

  1. 1.扬州大学园艺与植物保护学院,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,广州 510640
  • 通讯作者: 苏宏华(1975-),女,副教授,博士,研究方向为害虫绿色防控,(E-mail)susugj@126.com
  • 作者简介:吴梦露(1998-),女,江西景德镇人,硕士研究生,研究方向为害虫绿色防控,(E-mail)877986902@qq.com
  • 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)

Abstract:

【Objective】 Effects of cadmium stress on juvenile hormone and molting hormone titers in Spodoptera exigua. The effect of heavy metal on growth and development of insects from the perspective of insect physiology in the hope of providing a basis for ecological risk assessment and pollution control of heavy metals.【Methods】 In this study, artificial diet containing four concentrations of Cd2+ (0, 0.2,3.2, 51.2 mg/kg) were used to feed the newly hatched larvae of Spodoptera exigua until pupation.Then the titers of juvenile hormone and molting hormone at different growth stages (3rd instar, 5th instar, female adult and male adult) of S.exigua were determined.【Results】 The results of this experiment showed that the titers of juvenile hormone and molting hormone in larvae increased under low concentration cadmium stress (0.2 mg/kg).With the increase of cadmium concentration, the titers of juvenile hormone and molting hormone gradually decreased.The titers of juvenile-preserving hormone and molting hormone increased in Spodoptera exigua under cadmium stress, and the titers of juvenile-preserving hormone and molting hormone did not change significantly with the increase of cadmium concentration.【Conclusion】 The results indicate that cadmium stress has significant effects on the titers of two hormones in S.exigua.

Key words: cadmium; Spodoptera exigua; juvenile hormone; molting hormone

摘要:

【目的】研究重金属镉胁迫对昆虫生长发育的影响,为重金属镉胁迫评价提供依据。【方法】采用镉含量分别为0、0.2、3.2和51.2 mg/kg的人工饲料饲喂甜菜夜蛾初孵幼虫直至化蛹,测定不同虫态(3龄幼虫、5龄幼虫、雌/雄成虫)甜菜夜蛾体内保幼激素和蜕皮激素的滴度。【结果】低浓度镉(0.2 mg/kg)胁迫下甜菜夜蛾幼虫体内保幼激素和蜕皮激素滴度升高;随着镉浓度的升高,保幼激素和蜕皮激素的滴度逐渐下降。镉胁迫下甜菜夜蛾成虫体内保幼激素滴度升高,蜕皮激素滴度降低;随着镉浓度的升高,保幼激素(JH)和蜕皮激素(MH)的滴度无明显变化。【结论】JH和MH是昆虫生长发育和繁殖的重要调控因子,重金属镉胁迫通过改变昆虫体内JH和MH的滴度进而对昆虫生长发育和生殖产生影响。

关键词: 金属镉, 甜菜夜蛾, 保幼激素, 蜕皮激素

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