Arctic fleas are not fussy eaters: Bartonella bacteria may hitchhike between birds and mammals in a tundra ecosystem

IF 2.7 3区 地球科学 Q2 ECOLOGY
Kayla J. Buhler, Breeze Agar, T. Galloway, R. Alisauskas, E. Jenkins
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Abstract

Within the terrestrial Arctic ecosystem at Karrak Lake, Nunavut, Bartonella bacteria (B. vinsonii subsp. berkhoffii and B. henselae) have been detected in avian nest fleas (Ceratophyllus vagabundus vagabundus) and the blood of Arctic foxes (Vulpes lagopus). We further investigate the transmission dynamics at Karrak Lake by identifying Bartonella present in rodents, migratory geese upon arrival to nesting grounds, and rodent and avian fleas. Conventional PCR targeting the 16S-23S rRNA intergenic transcribed spacer region revealed DNA of B. vinsonii subsp. berkhoffii and B. rochalimae in 42% of 24 nest flea pools, B. rochalimae and B. grahamii in 70% of 10 rodent flea pools (Amalaraeus dissimilis), B. grahamii, B. vinsonii subsp. berkhoffii, and Bartonella sp. BvS12 in 20% of 20 red-backed voles (Myodes rutilus), and B. vinsonii subsp. berkhoffii in 2% of 42 Ross’s geese (Anser rossii). These findings suggest that geese and their associated fleas serve as migratory hosts and vectors. Detection of the same or similar species of Bartonella in rodent fleas, nest fleas and foxes proposes that transmission may occur during predation and detection of B. rochalimae (a Bartonella species commonly detected in rodents) in nest fleas, may suggest that these fleas have generalist feeding tendencies, acquiring Bartonella from rodents or foxes as they visit nests.
北极跳蚤不是挑剔的食客:巴尔通菌可能在苔原生态系统中的鸟类和哺乳动物之间搭便车
在努纳武特Karrak湖的北极陆地生态系统中,在鸟巢跳蚤(金鱼藻vagabundus vagabondus)和北极狐(Vulpes lagopus)的血液中检测到巴尔通菌(B.vinsonii subsp.berkhofii和B.henselae)。我们通过鉴定啮齿类动物、到达筑巢地的迁徙鹅以及啮齿类和禽跳蚤中存在的巴尔通菌,进一步调查了卡拉克湖的传播动态。针对16S-23S rRNA基因间转录间隔区的常规PCR揭示了B.vinsonii亚种的DNA。Berkhofii和B.rochalimae在42%的24个巢跳蚤池中,B.rochaliae和B.grahamii在70%的10个啮齿动物跳蚤池中(Amalaraeus dismiilis),B.grahami,B.vinsonii亚种。在20%的20只红背田鼠(Myodes rutilus)中发现了Berkhofii和Bartonella sp.BvS12。在42只罗斯鹅(Anser rossii)中,2%的鹅是berkhofii。这些发现表明,鹅及其相关跳蚤是迁徙的宿主和媒介。在啮齿类跳蚤、巢跳蚤和狐狸身上检测到相同或相似的巴尔onella物种表明,传播可能发生在捕食过程中,在巢跳蚤中检测到B.rochalimae(一种常见于啮齿类动物身上的巴尔onela物种)可能表明这些跳蚤具有广泛的进食倾向,在它们筑巢时从啮齿类动物或狐狸身上获得巴尔onella。
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来源期刊
Arctic Science
Arctic Science Agricultural and Biological Sciences-General Agricultural and Biological Sciences
CiteScore
5.00
自引率
12.10%
发文量
81
期刊介绍: Arctic Science is an interdisciplinary journal that publishes original peer-reviewed research from all areas of natural science and applied science & engineering related to northern Polar Regions. The focus on basic and applied science includes the traditional knowledge and observations of the indigenous peoples of the region as well as cutting-edge developments in biological, chemical, physical and engineering science in all northern environments. Reports on interdisciplinary research are encouraged. Special issues and sections dealing with important issues in northern polar science are also considered.
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