应用昆虫学报 ›› 2020, Vol. 57 ›› Issue (4): 930-937.doi: 10.7679/j.issn.2095-1353.2020.095

• 研究论文 • 上一篇    

内共生菌Rickettsia对烟粉虱生物学特性的影响 *

王紫淇1,2(), 刘媛1,2, 师沛琼3, 安璇1,2, 邱宝利1,2,4,***()   

  1. 1. 广东省生物农药创制与应用重点实验室,广州 510640
    2. 生物防治教育部工程研究中心,广州 510640
    3. 广东海洋大学农学院,湛江 524088
    4. 岭南现代农业科学与技术广东省实验室茂名分中心,茂名 525000
  • 收稿日期:2019-03-19 接受日期:2019-06-19 出版日期:2020-07-27 发布日期:2020-09-02
  • 通讯作者: 邱宝利 E-mail:vivian_wangziqi@163.com;baileyqiu@scau.edu.cn
  • 基金资助:
    *国家自然科学基金(31672028);广东省科技创新领军人才专项基金(2016TX03N273)

Effects of Rickettsia infection on the ecological characteristics of whitefly Bemisia tabaci

Zi-Qi WANG1,2(), Yuan LIU1,2, Pei-Qiong SHI3, Xuan AN1,2, Bao-Li QIU1,2,4,***()   

  1. 1. Key Laboratory of Bio-Pesticide Innovation and Application, Guangdong Province, Guangzhou 510640, China
    2. Engineering Research Center of Biological Control, Ministry of Education, Guangzhou 510640, China
    3. College of Agriculture, Guangdong Ocean University, Zhanjiang 524088, China
    4. Maoming Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Maoming 525000, China
  • Received:2019-03-19 Accepted:2019-06-19 Online:2020-07-27 Published:2020-09-02
  • Contact: Bao-Li QIU E-mail:vivian_wangziqi@163.com;baileyqiu@scau.edu.cn

摘要:

【目的】 阐明次生共生菌Rickettsia对烟粉虱生物学特性的影响。【方法】 Rickettsia阳性(B +)和阴性(B -)的烟粉虱在Rickettsia阳性棉花(C +)和阴性棉花(C -)上取食15 d,调查不同处理组烟粉虱的单雌产卵量、发育历期、存活率、成虫寿命以及F1代雌雄比。【结果】 (1)Rickettsia与烟粉虱共生可显著缩短烟粉虱的发育历期,B +C +及B +C -两处理组烟粉虱卵-成虫的世代发育历期均短于B -C +及B -C -两处理组。(2)Rickettsia可以提高烟粉虱各龄期的存活率,B +C +、B +C -、B -C +、B -C -各处理组烟粉虱世代存活率依次呈下降趋势。(3)Rickettsia对烟粉虱种群的雌雄比也有重要的影响,B -C +和B -C -处理组中烟粉虱种群雌性比显著小于B +C +和B +C -烟粉虱处理组。(4)Rickettsia可以影响烟粉虱成虫的寿命及繁殖力,Rickettsia阳性烟粉虱处理组成虫寿命及平均单雌产卵量显著高于阴性处理组。【结论】Rickettsia与烟粉虱共生以及Rickettsia在棉花植株中的存留对烟粉虱的发育、存活以及成虫雌性比、寿命和繁殖力都有有利影响,且Rickettsia与烟粉虱共生时对烟粉虱的影响力度要明显强于Rickettsia存留于棉花植株中时对烟粉虱产生的影响。

关键词: 烟粉虱, 共生菌, Rickettsia, 发育历期, 繁殖力, 存活率

Abstract:

[Objectives] To elucidate the effects of infection with the secondary symbiotic bacteria Rickettsia on the ecological characteristics of whitefly Bemisia tabaci. [Methods] Cotton was selected as the experimental plant. Rickettsia- positive (B +) and negative B. tabaci (B -) were allowed to feed on plants for 15 d. Plants on which B +insects had fed were regarded as Rickettsia persistent plants (C +) and those on which B -insects had fed were regarded as Rickettsia-free plants (C -). The developmental time and survival rate of B. tabaci nymphs feeding on these two types of cotton plants, and their subsequent fecundity and longevity as adults, was quantified and compared. [Results] Rickettsia can significantly shorten the developmental time of B. tabaci. The generational time of the B +C + and B +C - treatment groups was around 17-18d, whereas that of the B -C + and B -C - treatment groups was around 21-23 d. Rickettsia can also significantly increase the survival of B. tabaci; survival rates from egg to adult of the B +C +, B +C -, B -C + and B -C - treatment groups were 75.00%, 70.00%, 56.67% and 41.67%, respectively. Rickettsia also significantly increases the number of female offspring produced by B. tabaci. The number of female offspring produced by the B -C -and B -C +treatment groups was significantly lower than that produced by the B +C +and B +C -treatment groups. Furthermore, Rickettsia also affects the longevity and fecundity of B. tabaci. The longevity and average fecundity per female of the B +C +, B +C - treatment groups were significantly greater than those of the B -C - and B -C + treatment groups. [Conclusion] The symbiosis of Rickettsia in B. tabaci, and the persistence of Rickettsia in cotton plants, benefit the development and survival of whitefly nymphs, increase the number of female offspring produced and improve the longevity and reproduction of whitefly adults. In terms of its influence on B. tabaci biology, the symbiosis between Rickettsia and B. tabaci is more important than the persistence of Rickettsia in cotton plants.

Key words: Bemisia tabaci, symbiotic bacteria, Rickettsia, developmental duration, fecundity, survival rate