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21 December 2023 Differential burdens of blacklegged ticks (Ixodes scapularis) on sympatric rodent hosts
Jessica E. Brown, Hannah S. Tiffin, Alexandra Pagac, Karen C. Poh, Jesse R. Evans, Taylor M. Miller, Brian H. Herrin, Trey Tomlinson, Cameron Sutherland, Erika T. Machtinger
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Abstract

In the United States, there has been a steady increase in diagnosed cases of tick-borne diseases in people, most notably Lyme disease. The pathogen that causes Lyme disease, Borrelia burgdorferi, is transmitted by the blacklegged tick (Ixodes scapularis). Several small mammals are considered key reservoirs of this pathogen and are frequently-used hosts by blacklegged ticks. However, limited studies have evaluated between-species host use by ticks. This study compared I. scapularis burdens and tick-associated pathogen presence in wild-caught Clethrionomys gapperi (southern red-backed voles) and Peromyscus spp. (white-footed mice) in forested areas where the habitat of both species overlapped. Rodent trapping data collected over two summers showed a significant difference in the average tick burden between species. Adult Peromyscus spp. had an overall mean of 4.03 ticks per capture, while adult C. gapperi had a mean of 0.47 ticks per capture. There was a significant association between B. burgdorferi infection and host species with more Peromyscus spp. positive samples than C. gapperi (65.8% and 10.2%, respectively). This work confirms significant differences in tick-host use and pathogen presence between sympatric rodent species. It is critical to understand tick-host interactions and tick distributions to develop effective and efficient tick control methods.

Jessica E. Brown, Hannah S. Tiffin, Alexandra Pagac, Karen C. Poh, Jesse R. Evans, Taylor M. Miller, Brian H. Herrin, Trey Tomlinson, Cameron Sutherland, and Erika T. Machtinger "Differential burdens of blacklegged ticks (Ixodes scapularis) on sympatric rodent hosts," Journal of Vector Ecology 49(1), 44-52, (21 December 2023). https://doi.org/10.52707/1081-1710-49.1.44
Received: 14 July 2023; Accepted: 5 October 2023; Published: 21 December 2023
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KEYWORDS
Clethrionomys gapperi
ecology
parasite
parasitism
Peromyscus leucopus
rodent
ticks
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