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Screening of tick-borne pathogens in argasid ticks in Zambia : Expansion of the geographic distribution of Rickettsia lusitaniae and Rickettsia hoogstraalii and detection of putative novel Anaplasma species

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/86187

Title: Screening of tick-borne pathogens in argasid ticks in Zambia : Expansion of the geographic distribution of Rickettsia lusitaniae and Rickettsia hoogstraalii and detection of putative novel Anaplasma species
Authors: Qiu, Yongjin Browse this author →KAKEN DB
Simuunza, Martin Browse this author
Kajihara, Masahiro Browse this author →KAKEN DB
Chambaro, Herman Browse this author
Harima, Hayato Browse this author →KAKEN DB
Eto, Yoshiki Browse this author
Simulundu, Edgar Browse this author
Squarre, David Browse this author
Torii, Shiho Browse this author
Takada, Ayato Browse this author →KAKEN DB
Hang'ombe, Bernard Mudenda Browse this author
Sawa, Hirofumi Browse this author →KAKEN DB
Sugimoto, Chihiro Browse this author →KAKEN DB
Nakao, Ryo Browse this author →KAKEN DB
Keywords: Argasid tick
Anaplasma
Rickettsia lusitaniae
Rickettsia hoogstraalii
Zambia
Issue Date: 1-Jul-2021
Publisher: Elsevier
Journal Title: Ticks and Tick-Borne Diseases
Volume: 12
Issue: 4
Start Page: 101720
Publisher DOI: 10.1016/j.ttbdis.2021.101720
Abstract: Ticks (Ixodidae and Argasidae) are important arthropod vectors of various pathogens that cause human and animal infectious diseases. Many previously published studies on tick-borne pathogens focused on those transmitted by ixodid ticks. Although there are increasing reports of viral pathogens associated with argasid ticks, information on bacterial pathogens they transmit is scarce. The aim of this molecular study was to detect and characterize Rickettsia and Anaplasmataceae in three different argasid tick species, Ornithodoros faini, Ornithodoros moubata, and Argas walkerae collected in Zambia. Rickettsia hoogstraalii and Rickettsia lusitaniae were detected in 77 % (77/100) of Ar. walkerae and 10 % (5/50) of O. faini, respectively. All O. moubata pool samples (n = 124) were negative for rickettsial infections. Anaplasmataceae were detected in 63 % (63/100) of Ar. walkerae and in 82.2 % (102/124) of O. moubata pools, but not in O. faini. Phylogenetic analysis based on the concatenated sequences of 16S rRNA and groEL genes revealed that Anaplasma spp. detected in the present study were distinct from previously validated Anaplasma species, indicating that the current knowledge on the diversity and vector range of Anaplasma spp. is incomplete. Our findings highlight new geographical records of R. lusitaniae and R. hoogstraalii and confirm that the wide geographic distribution of these species includes the African continent. The data presented here increase our knowledge on argasid tick-borne bacteria and contribute toward understanding their epidemiology.
Rights: ©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/86187
Appears in Collections:獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中尾 亮

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