title: Phylogenetic analysis of Bartonella detected in rodent fleas in Yunnan, China.
abstract: Previous studies have demonstrated a diversity of Bartonella spp. in rodent populations in Yunnan Province, China. Although Bartonella spp. have been isolated from cat fleas and cattle ticks collected from their animal hosts, little is known about Bartonella carried by rodent fleas. In this study, Bartonella DNA was detected by polymerase chain reaction (PCR) in two of five species of rodent fleas. These included Xenopsylla cheopis and Ctenophthalmus lushuiensis, which were collected from Rattus tanezumi flavipectus and from the nests of voles, respectively, during 1997 from two sites in western Yunnan Province, China. Sequence analysis of the Bartonella citrate synthase gene (gltA) amplicons obtained from six of 65 grouped flea samples showed that Bartonella genetic variants were clustered in four groups. One from Xenopsylla cheopis was identical to Bartonella tribocorum, whereas the other three genotypes from Ctenophthalmus lushuiensis were related to the vole-associated Bartonella isolates and cat-associated Bartonella clarridgeiae. This is the first detection of this Bartonella variant from fleas in China. Therefore, further investigations are needed to clarify the distribution of Bartonella in rodents and their ectoparasites in China to define the role of these arthropods in the transmission routes of Bartonella.
authors.affiliation: Department of Vector Biology and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention P.O. Box 5, Changping, Beijing 102206, China.
authors.forename: Dong Mei
authors.initials: DM
authors.lastname: Li
authors.forename: Qi Yong
authors.initials: QY
authors.lastname: Liu
authors.forename: Dong Zheng
authors.initials: DZ
authors.lastname: Yu
authors.forename: Jian Zhong
authors.initials: JZ
authors.lastname: Zhang
authors.forename: Zheng Da
authors.initials: ZD
authors.lastname: Gong
authors.forename: Xiu Ping
authors.initials: XP
authors.lastname: Song
mesh_terms: D000818:Animals; D001473:Bartonella / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D001474:Bartonella Infections / Q000453:epidemiology / Q000382:microbiology / Q000635:transmission / Q000662:veterinary; D001483:Base Sequence; D002681:China; D002950:Citrate (si)-Synthase / Q000235:genetics; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004197:Disease Reservoirs / Q000382:microbiology / Q000662:veterinary; D014644:Genetic Variation; D007303:Insect Vectors / Q000382:microbiology*; D008969:Molecular Sequence Data; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000662:veterinary; D015995:Prevalence; D012376:Rodent Diseases / Q000453:epidemiology / Q000382:microbiology / Q000635:transmission; D012377:Rodentia; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D005423:Siphonaptera / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D002950:Citrate (si)-Synthase