在玉米挖掘机蛋上的多代繁殖中,Trichogramma ostriniae在Trichogramma dendrolimi上取得的繁殖成功
Yu Wang1, Asim Iqbal2, Kanwer Shahzad Ahmed3
1Agricultural College, Jilin Agricultural Science and Technology University, Jilin 132101, China.
Insects
|April 23, 2025
概括
在控制亚洲玉米虫 (ACB) 方面,Trichogramma ostriniae表现出优于Trichogramma dendrolimi的繁殖成功. T. ostriniae在几代人中表现出更高的后代出现率和更低的死亡率,这使得它成为更有效的ACB管理的生物控制剂.
科学领域:
- 农业昆虫学 农业昆虫学
- 生物控制 生物控制
- 昆虫害虫管理 昆虫害虫管理
背景情况:
- 亚洲玉米虫 (ACB) *Ostrinia furnacalis*是中国玉米的主要经济害虫,导致大量的产量损失.
- 自20世纪70年代以来,在综合性害虫管理 (IPM) 计划中,用于ACB控制的 *Trichogramma* 物种的大规模养.
- 对ACB的关键生物控制剂包括*Trichogramma dendrolimi*和*Trichogramma ostriniae*. 这两种生物控制剂都具有重要作用.
研究的目的:
- 为了评估 *Trichogramma dendrolimi* 和 *Trichogramma ostriniae* 的繁殖成功.
- 评估不同寄生虫比对后代出现和死亡率的影响.
- 确定几代人对这些生物控制剂的疗效的影响.
主要方法:
- 评估T. dendrolimi*和T. ostriniae*从ACB蛋中成年后代的出现和死亡率.
- 使用五种寄生虫比率 (5:1, 3:1, 1:1, 1:3, 1:5) 的 *T. dendrolimi* 到 *T. ostriniae*.
- 在三代 (F1到F3) 监测生殖成功.
主要成果:
- 后代的出现受到寄生虫代,比率及其相互作用的显著影响.
- *T. ostriniae*在所有世代和比例上都表现出明显更高的后代出现率,与*T. dendrolimi*相比.
- *T. dendrolimi*在后一代的出现率下降,在F3中没有观察到,而*T. ostriniae*保持了一致的出现.
结论:
- 死亡率评估显示,T. ostriniae比T. dendrolimi*优越,后代的死亡率较低.
- 寄生虫比率显著影响了T. dendrolimi的F1出现,但并没有影响T. ostriniae.
- 结果强调了为有效的ACB管理选择适当的*Trichogramma*物种的重要性.
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