Detection of the New Ehrlichia Species Closely Related to Ehrlichia ewingii from Haemaphysalis longicornis in Yonaguni Island, Okinawa, Japan

Matsumoto, Kotaro; Takeuchi, Toshihiko; Yokoyama, Naoki; Katagiri, Yoshito; Ooshiro, Mamoru; Zakimi, Satoshi; Gaowa,; Kawamori, Fumihiko; Ohashi, Norio; Inokuma, Hisashi

doi:10.1292/jvms.11-0007

Cited by 23 publications

(13 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the current taxonomy rules [57], we propose the Candidatus status and the following provisional name Candidatus "Ehrlichia senegalensis", whose pathogenicity remains unknown. Recently, there has been an increase in the genetic diversity of Anaplasmataceae and newly described species worldwide [55,[58][59][60][61]. Other species isolated from rodents, such as A. phagocytophilum and A. muris, may affect humans.…”

Section: Discussionmentioning

confidence: 99%

Rodents as Hosts of Pathogens and Related Zoonotic Disease Risk

et al. 2020

View full text Add to dashboard Cite

Rodents are known to be reservoir hosts for at least 60 zoonotic diseases and are known to play an important role in their transmission and spread in different ways. We sampled different rodent communities within and around human settlements in Northern Senegal, an area subjected to major environmental transformations associated with global changes. Herein, we conducted an epidemiological study on their bacterial communities. One hundred and seventy-one (171) invasive and native rodents were captured, 50 from outdoor trapping sites and 121 rodents from indoor habitats, consisting of five species. The DNA of thirteen pathogens was successfully screened on the rodents’ spleens. We found: 2.3% of spleens positive to Piroplasmida and amplified one which gave a potentially new species Candidatus “Theileria senegalensis”; 9.35% of Bartonella spp. and amplified 10, giving three genotypes; 3.5% of filariasis species; 18.12% of Anaplasmataceae species and amplified only 5, giving a new potential species Candidatus “Ehrlichia senegalensis”; 2.33% of Hepatozoon spp.; 3.5% of Kinetoplastidae spp.; and 15.2% of Borrelia spp. and amplified 8 belonging all to Borrelia crocidurae. Some of the species of pathogens carried by the rodents of our studied area may be unknown because most of those we have identified are new species. In one bacterial taxon, Anaplasma, a positive correlation between host body mass and infection was found. Overall, male and invasive rodents appeared less infected than female and native ones, respectively.

show abstract

Section: Discussionmentioning

confidence: 99%

Rodents as Hosts of Pathogens and Related Zoonotic Disease Risk

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The Ehrlichia sequences observed in this study share 99.8% identity with strains identified in H . longicornis ticks from Wuhan, Shenyang, China , and Japan . Further studies are needed to determine the pathogenicity of the candidate species to be prepared for use for preventing and controlling related diseases.…”

Section: Discussionmentioning

confidence: 99%

Characterization of microbiota diversity of field‐collected Haemaphysalis longicornis (Acari: Ixodidae) with regard to sex and blood meals

Zhang

Huang

et al. 2018

J Basic Microbiol

View full text Add to dashboard Cite

Haemaphysalis longicornis is a prominent tick species in China, and the major vector of an emerging tick‐borne disease: severe fever with thrombocytopenia syndrome (SFTS). Microbiome diversity of ticks is influenced by several factors. In this study, we investigated microbiome diversity in field‐collected female and male H. longicornis ticks and compared the microbial composition of fed and unfed ticks and of those feeding on different hosts using barcode sequencing of V3–V4 region of 16S RNA gene. Regardless of sex, host, and feeding status; the highest abundance among all samples was found for the genus Coxiella. The relative numbers of Coxiella sequences decreased with the length of the blood feeding, whereas the numbers of Staphylococcus and Corynebacterium increased gradually. The dominance of Coxiella across all samples indicates that it is an obligate symbiont of H. longicornis. Overall, higher microbiome richness was detected in male ticks than in female ticks. Fed ticks showed a more diverse microbe composition than unfed ticks, and ticks fed on goats exhibited the highest diversity. These findings of this study can serve as a basis for future studies of microbiota biology and interactions between the microbes and pathogens of H. longicornis.

show abstract

“…The GEP region of the 16S rRNA amplified from one of the A. phagocytophilum ‐positive male H. punctata from cattle was homologous (100% identical to HQ69758) to an Ehrlichia sp. closely related to E. ewingii originally detected in H. longicornis from Japan (Matsumoto et al ., ). These results indicate that this tick was co‐infected with A. phagocytophilum and an Ehrlichia sp., although further investigation should be performed to determine the identity of the Ehrlichia sample.…”

Section: Ticks Removed From Birds In Santa Eulalia (42°12′n 02°12′w)mentioning

confidence: 99%

Detection of tick‐borne Anaplasma bovis, Anaplasma phagocytophilum and Anaplasma centrale in Spain

Palomar

Portillo

Santibáñez

et al. 2015

Medical Vet Entomology

View full text Add to dashboard Cite

The genus Anaplasma (Rickettsiales: Anaplasmataceae) includes species of medical and veterinary importance. The presence of Anaplasma spp. in ticks from birds, as well as in Haemaphysalis punctata (Ixodida: Ixodidae) specimens collected from cattle and vegetation in northern Spain was investigated. A total of 336 ticks from birds [174 Ixodes frontalis (Ixodida: Ixodidae), 108 H. punctata, 34 Hyalomma marginatum (Ixodida: Ixodidae), 17 Ixodes ricinus (Ixodida: Ixodidae) and three Ixodes spp.], and 181 H. punctata specimens collected from cattle (n = 71) and vegetation (n = 110) were analysed. Anaplasma bovis was detected in five H. punctata, including two from birds (1.9%) and three from vegetation (2.7%). Four I. frontalis (2.3%) (one co-infected with 'Candidatus Midichloria mitochondrii') and one I. ricinus (5.9%) removed from birds, as well as four H. punctata (5.6%) collected from cattle showed Anaplasma phagocytophilum infection. In addition, Anaplasma centrale was found in two H. punctata, one from a cow (1.4%) and the other from vegetation (0.9%). This study represents the first evidence of the presence of A. bovis in European ticks, and reports the first detection of A. bovis and A. centrale in H. punctata, and the first finding of A. phagocytophilum and 'Ca. Midichloria mitochondrii' in I. frontalis.

show abstract

Detection of the New Ehrlichia Species Closely Related to Ehrlichia ewingii from Haemaphysalis longicornis in Yonaguni Island, Okinawa, Japan

Cited by 23 publications

References 15 publications

Rodents as Hosts of Pathogens and Related Zoonotic Disease Risk

Rodents as Hosts of Pathogens and Related Zoonotic Disease Risk

Characterization of microbiota diversity of field‐collected Haemaphysalis longicornis (Acari: Ixodidae) with regard to sex and blood meals

Detection of tick‐borne Anaplasma bovis, Anaplasma phagocytophilum and Anaplasma centrale in Spain

Contact Info

Product

Resources

About