跨本地和入侵棕寡妇蜘蛛种群的内生生物多样性
Monica A Mowery1,2, Laura C Rosenwald3, Eric Chapman3
1Mitrani Department of Desert Ecology, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, Israel. mmowery@york.cuny.edu.
Scientific reports
|April 12, 2024
概括
侵入性棕色寡妇蜘蛛在本地和入侵范围内拥有主要的内生生体,Rhabdochlamydia. 观察到Rhabdochlamydia和Wolbachia流行率的地理差异,影响了入侵物种的动态.
科学领域:
- 微生物学 微生物学
- 类动物学 类动物学 类动物学
- 进化生物学 进化生物学
背景情况:
- 侵入性棕色寡妇蜘蛛,拉特罗德克图斯 (Latrodectus geometricus) 在全球分布.
- 侵入性物种往往携带相关的生物体,如内共生生物.
- 了解内生生物的动态对于入侵物种生态学至关重要.
研究的目的:
- 调查内共生物多样性和在Latrodectus geometricus的本地和入侵种群中的流行率.
- 为了比较本地 (南非) 和入侵性 (以色列,美国) 范围之间的内生生物形状.
- 识别潜在的母性遗传内共生体及其地理分布.
主要方法:
- 103只成年雌性蜘蛛的高通量16S rRNA基因测序.
- 在118个成年雌性蜘蛛中对Rhabdochlamydia和Wolbachia进行诊断查.
- 在蜘蛛蛋中分析内生生物的存在,以确认母系遗传.
主要成果:
- 在所有种群和卵子中,在86%的个体中发现了一种主要的内生生物,Rhabdochlamydia,这表明母亲的遗传.
- 沃尔巴基亚在较低的患病率 (14%) 中被检测出来,但在所有国家都存在.
- 观察到内共生物流行的地理差异,以色列有较高的Rhabdochlamydia,以色列和南非有集群的Wolbachia.
结论:
- 拉布多克拉米迪亚是Latrodectus geometricus的一种一致且可能重要的内生生体.
- 在入侵性种群中,内生生物的多样性似乎较低,这与预测一致.
- 内生生物的地理差异可能会影响这种侵入性蜘蛛的传播和种群动态.
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