Survey of Ticks Collected from Tennessee Cattle and Their Pastures for Anaplasma and Ehrlichia Species

The Journal of Parasitology
K PompoR T Trout Fryxell

Abstract

Anaplasma marginale is the causative agent for bovine anaplasmosis (BA) and Ehrlichia ruminantium is the causative agent for heartwater, 2 devastating diseases of cattle. BA is common in the United States and frequently reported in western Tennessee cattle; however, cases of heartwater are not yet established in the continental United States. Because both pathogens are transmitted via the bites of infected ticks, the objective of this study was to survey cattle and pastures for ticks and for each pathogen. University of Tennessee AgResearch has 7 research and education centers (REC) located throughout the state at which they manage cattle. Ticks were collected from selected cattle (every fourth to sixth animal) and pastures (via dragging) associated with the herd from each REC during the summer of 2013. A total of 512 ticks were collected from cattle (n = 386) and pastures (n = 126) and were PCR-screened for Anaplasma and Ehrlichia using genus-specific primers. Collections consisted of 398 (77.7%) Amblyomma americanum , 84 (16.4%) Amblyomma maculatum, and 30 (5.9%) Dermacentor variabilis . Ticks were not recovered from pastures or cattle east of the Tennessee Plateau. The North American vectors for An. marginale and E. ruminant...Continue Reading

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Citations

Jan 9, 2016·Journal of Medical Entomology·S E MaysR T Trout Fryxell
Jan 24, 2016·Medical and Veterinary Entomology·S E MaysR T Trout Fryxell
May 10, 2017·IET Nanobiotechnology·Lakshminarayana Turuvekere SadguruPrasadPrahlad Chandra Ghosh
Dec 30, 2016·Journal of Medical Entomology·Michelle E J AllerdiceChristopher D Paddock
Jun 2, 2018·Interdisciplinary Perspectives on Infectious Diseases·Taylor A Zabel, Folashade B Agusto
Jul 11, 2018·International Journal for Parasitology. Parasites and Wildlife·Mary M MerrillSamantha M Wisely

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