寄生虫黄蜂的宿主范围与宿主对其相互病毒共生体的敏感性有关
K A Coffman1, A N Kauwe2, N E Gillette2,3
1Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA.
Molecular ecology
|July 31, 2024
概括
一种互惠性毒虫病毒影响了一般性寄生虫黄蜂Diachasmimorpha longicaudata的宿主范围. 这种病毒的共生体.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 病毒学 病毒学
- 生态生态学 生态生态学
背景情况:
- 寄生虫黄蜂的种类非常多样化,许多都专门针对特定的宿主.
- 迪阿卡斯米莫尔法 (Diachasmimorpha longicaudata) 是一种通用寄生虫,用于对果害虫进行生物控制.
- 病毒共生体在塑造寄生虫宿主范围中的作用在很大程度上是未知的.
研究的目的:
- 为了研究一个互利性天花病毒在Diachasmimorpha longicaudata的宿主范围中的作用.
- 为了比较病毒感染动态在宽容与非宽容的tephritid果宿主.
- 了解病毒共生体活动如何影响寄生虫一般性.
主要方法:
- 手动注射小病毒到三种tephritid果 (两个允许的,一个不允许的).
- 对死亡率和病毒复制的监测.
- 在允许和不允许宿主中病毒感染期间对转录动态的分析.
主要成果:
- 宽容性宿主 (Ceratitis capitata,Bactrocera dorsalis) 显示出对病毒的高度敏感性,复制速度快,死亡率高.
- 不宽容的宿主 (Zeugodacus cucurbitae) 在很大程度上抵抗感染,死亡率低,病毒不复制.
- 与宽容宿主相比,非宽容宿主表现出阻碍病毒基因表达和宿主基因表达的有限变化.
结论:
- 病毒共生体的宿主范围似乎影响了寄生虫黄蜂Diachasmimorpha longicaudata的宿主范围.
- 病毒共生体活动是D. longicaudata作为通用寄生虫和生物控制剂的成功的一个重要因素.
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