| 田俊策，郑许松，杨亚军，徐红星，吕仲贤,2024,益于螟蛉绒茧蜂而非稻纵卷叶螟的寡糖筛选[J].环境昆虫学报,(6):1279-1285 |
| 益于螟蛉绒茧蜂而非稻纵卷叶螟的寡糖筛选 |
| Screening sugars can benefit Cotesia ruficrus without benefiting Cnaphalocrocis medinalis |
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| DOI： |
| 中文关键词: 稻纵卷叶螟 螟蛉绒茧蜂 寡糖 生物防治 |
| 英文关键词:Cnaphalocrocis medinalis Cotesia ruficrus sugars biological control |
| 基金项目:国家重点研发计划（2023YFD1400800）；国家自然科学基金（31401736）；国家水稻产业技术体系（CARS-01-17） |
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| 中文摘要: |
| 鳞翅目害虫及其寄生性天敌的成虫均能通过取食蜜源食物来提高生态适应性。为筛选出有利于螟蛉绒茧蜂Cotesia ruficrus但不使稻纵卷叶螟Cnaphalocrocis medinalis受益的寡糖，本研究以蜜源中常见的12种寡糖为材料，评估供试寡糖对稻纵卷叶螟寿命和繁殖力的影响，及对螟蛉绒茧蜂寿命的影响。结果显示取食供试寡糖对稻纵卷叶螟的寿命影响不大，雌雄成虫的寿命分别在6.2~8.0 d和5.0~7.9 d，仅取食葡萄糖显著提高雌成虫的寿命。但果糖（232.1）、葡萄糖（130.1）和蔗糖（186.1）可以显著提高稻纵卷叶螟的每雌产卵量，分别是取食清水（31.7）的7.3倍、4.1倍和5.9倍。与稻纵卷叶螟不同，取食果糖、半乳糖、葡萄糖、甘露糖、麦芽糖、蜜二糖、蔗糖、海藻糖和松三糖均可显著提高螟蛉绒茧蜂雌雄成虫的寿命，分别是取食清水的3.7倍、2.9倍、2.5倍、2.1倍、2.3倍、2.0倍、2.8倍、2.6倍和1.7倍。因此，半乳糖、甘露糖、麦芽糖、蜜二糖、海藻糖和松三糖可以显著提高螟蛉绒茧蜂的寿命但不会促进其寄主稻纵卷叶螟的寿命和繁殖力。 |
| 英文摘要: |
| Both lepidopteran pests and their parasitic natural enemies can enhance their ecological adaptability by feeding on nectar sources. To screen oligosaccharides that benefit Cotesia ruficrus rather than Cnaphalocrocis medinalis, this study evaluated the effects of 12 common oligosaccharides found in nectar sources on the longevity and fecundity of C. medinalis, as well as the longevity of C. ruficrus. The results showed that feeding on the tested oligosaccharides had little effect on the longevity of C. medinalis, with the longevity of male and female adults ranging from 6.2 to 8.0 days and 5.0 to 7.9 days, respectively. Only glucose significantly increased the longevity of female adults. However, fructose (232.1), glucose (130.1), and sucrose (186.1) significantly increased the oviposition per female of C. medinalis, being 7.3, 4.1, and 5.9 times higher than that of water (31.7). Unlike C. medinalis, feeding on fructose, galactose, glucose, mannose, maltose, melibiose, sucrose, trehalose, and melezitose significantly extended the longevity of C. ruficrus adults, with longevity being 3.7, 2.9, 2.5, 2.1, 2.3, 2.0, 2.8, 2.6, and 1.7 times longer than those of the water-fed control. Therefore, galactose, mannose, maltose, melibiose, trehalose, and melezitose could significantly extend the longevity of C. ruficru adults without promoting the longevity or fecundity of its host, C. medinalis. |
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