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| 番茄褪绿病毒对刀角瓢虫捕食烟粉虱的影响 |
| Predation effect of Serangium japonicum on Bemisia tabaci affected by Tomato chlorosis virus |
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| DOI： |
| 中文关键词: 刀角瓢虫 烟粉虱 番茄褪绿病毒 捕食作用 选择性 |
| 英文关键词:Serangium japonicum Bemisia tabaci Tomato chlorosis virus(ToCV) predatory ability preference |
| 基金项目:湖南省自然科学基金（2019JJ30014）;大宗蔬菜产业体系（CARS-23-D-02）;国家自然科学基金（31872932） |
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| 中文摘要: |
| 在实验室条件下研究了不同温度下刀角瓢虫 Serangium japonicum 对健康和感染番茄褪绿病毒(Tomato chlorosis virus,ToCV)番茄上的烟粉虱 Bemisia tabaci 的捕食效果。结果表明，无论在健康番茄还是感染ToCV番茄上，刀角瓢虫均可以取食烟粉虱的卵和若虫，对卵的捕食量最大，且对烟粉虱卵的功能反应都属于Holling II 型反应，方程式分别为NA =0.9650N/1+0.0007N 和NA =0.9866N/1+0.0006N。温度可以影响功能反应的参数，在30℃时刀角瓢虫对健康番茄上的烟粉虱的控制作用最好，在35℃时刀角瓢虫对感染ToCV番茄上的烟粉虱控制效果最好。刀角瓢虫偏好感染ToCV的番茄植株，对健康番茄偏好性较弱。刀角瓢虫对感染ToCV番茄上的烟粉虱具有良好的捕食效果，可为烟粉虱的生物防治提供合理依据。 |
| 英文摘要: |
| The predatory ability of Serangium japonicum on Bemisia tabaci feeding on uninfected tomato plants and tomato chlorosis virus (ToCV)-infected tomato plants were evaluated in the laboratory. The results showed that on uninfected and ToCV-infected tomato plants, S. japonicum could prey on eggs and nymphs of B.tabaci , and showed the largest prey on eggs, and the functional response of female adult S. japonicum on B. tabaci eggs were Holling II type. The equations are NA =0.9650N/1+0.0007N and NA = 0.9866N/1+0.0006N, respectively. Temperature could affect the parameters of functional response, and the control effect of S. japonicum on B. tabaci were best at 30℃ on uninfected tomato plants, and at 35℃ on ToCV-infected tomato plants. S.japonicum preferred ToCV-infected tomato plants. The results showed that the S. japonicum showed a good predation effect on B. tabaci which was fed on ToCV-infected tomato plants, which could provide a reasonable basis for biological control of B. tabaci. |
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