Experimental field studies have demonstrated negative fitness consequences of Hen Flea Ceratophyllus gallinae infestations for bird hosts, yet it is currently unclear whether these negative effects are a direct consequence of flea‐induced blood loss or a result of flea‐borne pathogen transmission. Here we used a 16S rRNA gene sequencing approach to characterize the bacterial microbiota community of Hen Fleas collected from Great Tit Parus major nests and found that Brevibacterium (Actinobacteria), Staphylococcus (Firmicutes), Stenotrophomonas (Proteobacteria), Massilia (Proteobacteria), as well as the arthropod endosymbionts ‘Candidatus Lariskella’ and ‘Candidatus Midichloria’ were most abundant. We found evidence for the occurrence of Staphylococcus spp. in Hen Fleas, which may cause opportunistic infections in bird hosts, but not of other known pathogens commonly transmitted by other flea species, such as Bartonella spp. or Rickettsia spp. However, Hen Fleas might transmit other pathogens (e.g. viruses or bacteria that are not currently recognized as bird pathogens), which may contribute to the negative fitness consequences of Hen Flea infestations in addition to direct blood loss or secondary infections of wounds caused by biting fleas.

中文翻译：

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腔内繁殖禽类常见外寄生虫的细菌微生物群组成，Hen Flea Ceratophyllus gallinae

实验领域的研究已经证明母鸡跳蚤的消极后果健身角叶鸡皮虫害鸟类主机，但目前还不清楚这些负面影响是否跳蚤引起的失血的直接后果或跳蚤传播的病原体传播的结果。在这里，我们使用16S rRNA基因测序方法来表征从大山雀帕鲁斯大巢中收集的母鸡蚤的细菌微生物群落，并发现短杆菌（Actinobacteria），葡萄球菌（Firmicutes），嗜单胞菌（Pronotrophomonas）（Proteobacteria），Massilia（Proteobacteria）以及作为节肢动物内共生菌' Candidatus Lariskella'和'暂定Midichloria”是最丰富的。我们发现了葡萄球菌属的证据。在母鸡跳蚤，这可能会导致在鸟主机的机会性感染，但不是由其它跳蚤物种，诸如通常发送的其它已知的病原体巴尔通体属。或立克次氏体属。但是，母鸡蚤可能传播其他病原体（例如，目前尚未被识别为禽病原体的病毒或细菌），除了直接流血或由咬人的跳蚤引起的伤口继发感染外，还可能导致母鸡蚤侵害的不良健康后果。