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The genetic diversity of Borrelia afzelii is not maintained by the diversity of the rodent hosts.

ABSTRACT: Small mammals are essential in the enzootic cycle of many tick-borne pathogens (TBP). To understand their contribution to the genetic diversity of Borrelia afzelii, the most prevalent TBP in questing Ixodes ricinus, we compared the genetic variants of B. afzelii at three distinct genetic loci. We chose two plasmid loci, dbpA and ospC, and a chromosomal one, IGS.While the larvae that fed on shrews (Sorex sp.) tested negative for B. afzelii, those fed on bank voles (Myodes glareolus) and wood mice (Apodemus sylvaticus) showed high infection prevalences of 0.13 and 0.27, respectively. Despite the high genetic diversity within B. afzelii, there was no difference between wood mice and bank voles in the number and types of B. afzelii haplotypes they transmit.The genetic diversity in B. afzelii cannot be explained by separate enzootic cycles in wood mice and bank voles.

SUBMITTER: Coipan CE

PROVIDER: S-EPMC6090804 | biostudies-other | 2018 Aug

REPOSITORIES: biostudies-other

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The genetic diversity of Borrelia afzelii is not maintained by the diversity of the rodent hosts.

Coipan Claudia E CE van Duijvendijk Gilian L A GLA Hofmeester Tim R TR Takumi Katsuhisa K Sprong Hein H

Parasites & vectors 20180806 1

<h4>Background</h4>Small mammals are essential in the enzootic cycle of many tick-borne pathogens (TBP). To understand their contribution to the genetic diversity of Borrelia afzelii, the most prevalent TBP in questing Ixodes ricinus, we compared the genetic variants of B. afzelii at three distinct genetic loci. We chose two plasmid loci, dbpA and ospC, and a chromosomal one, IGS.<h4>Results</h4>While the larvae that fed on shrews (Sorex sp.) tested negative for B. afzelii, those fed on bank vol ...[more]

PMID: 30081938

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