Northern and southern blacklegged (deer) ticks are genetically distinct with different histories and Lyme spirochete infection rates.

ABSTRACT: Lyme borreliosis (LB) is the archetypal emerging zoonosis and is dependent on transmission by ticks in the genus Ixodes. Understanding the origin, maintenance, and spread of these ticks contributes much to our understanding of the spread of LB and other disease agents borne by these ticks. We collected 1232 Ixodes scapularis ticks from 17 east coast sites ranging from New Hampshire to Florida and used mtDNA, three nuclear genetic loci, and incorporated Bayesian analyses to resolve geographically distinct tick populations and compare their demographic histories. A sparse, stable, and genetically diverse population of ticks in the Southeastern US, that is rarely infected with the agent of LB is genetically distinct from an abundant, expanding, and comparatively uniform population in the Nort

SUBMITTER: Xu G 

PROVIDER: S-EPMC7314838 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature