在巴黎病虫 (Hemiptera: Cimicidae) 中遗传性共生体的流行
Naciye Sena Cagatay1, Mohammad Akhoundi2,3, Arezki Izri2
1Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK.
Environmental microbiology reports
|January 31, 2025
概括
巴黎的虫子携带常见的遗传微生物,包括Wolbachia (一个有义务的伴侣) 和自愿的共生体. 在2023年爆发期间,所有观察到的床遗传类型中都存在这些共生共感染.
科学领域:
- 微生物学 微生物学
- 昆虫学 昆虫学是一门学科.
- 遗传学 遗传学 是一个
背景情况:
- 昆虫生物学受到母亲遗传的微生物共生体的显著影响.
- 在虫子中识别了三个关键的共生体:Wolbachia (强制性),Symbiopectobacterium purcellii菌株SyClec,以及Candidatus Tisiphia sp. (可选的). 这是可选的.
- 之前的研究集中在实验室线路上,让现场种群的共生体动力学研究不足.
研究的目的:
- 为了调查2023年巴黎爆发期间从现场样本中获得的床的共生虫感染状况.
- 在自然种群中确定已知的床共生体的流行率和共感染模式.
主要方法:
- 针对性终点PCR试验被用于检测共生体的存在.
- 在巴黎的10个区收集了50只虫.
- 对线粒体DNA (mtDNA) COI条形码区域进行了分析,以确定单质类型.
主要成果:
- 这三种共生体 (Wolbachia,Symbiopectobacterium,Candidatus Tisiphia) 在Cimex lectularius样本中被广泛检测到.
- 三重共生菌感染 (Symbiopectobacterium-Candidatus Tisiphia-Wolbachia) 是最常见的共感染.
- 在少数个体中观察到可选性共生体缺失.
- 在所有五种观察到的mtDNA单元型中都发现了共生动物三重感染,这表明了长期的关联.
结论:
- 2023年巴黎的床爆发涉及与宿主二级共生体的高频共感染.
- 选择性共生体是虫种群中重要的,但未被充分描述的组成部分.
- 交生虫的存在不是最近的现象,并且是跨不同虫遗传谱系的整合.
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