A Survey of Tick-Borne Bacterial Pathogens in Florida

Within the past three decades, new bacterial etiological agents of tick-borne disease have been discovered in the southeastern U.S., and the number of reported tick-borne pathogen infections has increased. In Florida, few systematic studies have been conducted to determine the presence of tick-borne...

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Main Authors: Carrie E. De Jesus, Claudia Ganser, William H. Kessler, Zoe S. White, Chanakya R. Bhosale, Gregory E. Glass, Samantha M. Wisely
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/10/9/297
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author Carrie E. De Jesus
Claudia Ganser
William H. Kessler
Zoe S. White
Chanakya R. Bhosale
Gregory E. Glass
Samantha M. Wisely
author_facet Carrie E. De Jesus
Claudia Ganser
William H. Kessler
Zoe S. White
Chanakya R. Bhosale
Gregory E. Glass
Samantha M. Wisely
author_sort Carrie E. De Jesus
collection DOAJ
description Within the past three decades, new bacterial etiological agents of tick-borne disease have been discovered in the southeastern U.S., and the number of reported tick-borne pathogen infections has increased. In Florida, few systematic studies have been conducted to determine the presence of tick-borne bacterial pathogens. This investigation examined the distribution and presence of tick-borne bacterial pathogens in Florida. Ticks were collected by flagging at 41 field sites, spanning the climatic regions of mainland Florida. DNA was extracted individually from 1608 ticks and screened for <i>Anaplasma</i>, <i>Borrelia</i>, <i>Ehrlichia</i> and <i>Rickettsia</i> using conventional PCR and primers that amplified multiple species for each genus. PCR positive samples were Sanger sequenced. Four species of ticks were collected: <i>Amblyomma americanum</i>, <i>Amblyomma maculatum</i>, <i>Dermacentor variabilis,</i> and <i>Ixodes scapularis</i>. Within these ticks, six bacterial species were identified: <i>Borrelia burgdorferi</i>, <i>Borrelia lonestari</i>, <i>Ehrlichia ewingii</i>, <i>Rickettsia</i> <i>amblyommatis</i>, <i>Rickettsia andeanae</i>, <i>Rickettsia</i> <i>parkeri</i>, and <i>Rickettsia</i> endosymbionts. Pathogenic <i>Borrelia</i>, <i>Ehrlichia</i>, and <i>Rickettsia</i> species were all detected in the North and North-Central Florida counties; however, we found only moderate concordance between the distribution of ticks infected with pathogenic bacteria and human cases of tick-borne diseases in Florida. Given the diversity and numerous bacterial species detected in ticks in Florida, further investigations should be conducted to identify regional hotspots of tick-borne pathogens.
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spelling doaj.art-45d095a091f14353acb6ba1a4ccd7fe92022-12-21T19:09:23ZengMDPI AGInsects2075-44502019-09-0110929710.3390/insects10090297insects10090297A Survey of Tick-Borne Bacterial Pathogens in FloridaCarrie E. De Jesus0Claudia Ganser1William H. Kessler2Zoe S. White3Chanakya R. Bhosale4Gregory E. Glass5Samantha M. Wisely6Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL 32611, USADepartment of Geography, University of Florida, Gainesville, FL 32611, USADepartment of Geography, University of Florida, Gainesville, FL 32611, USADepartment of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL 32611, USADepartment of Entomology and Nematology, University of Florida, Gainesville, FL 32611, USADepartment of Geography, University of Florida, Gainesville, FL 32611, USADepartment of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL 32611, USAWithin the past three decades, new bacterial etiological agents of tick-borne disease have been discovered in the southeastern U.S., and the number of reported tick-borne pathogen infections has increased. In Florida, few systematic studies have been conducted to determine the presence of tick-borne bacterial pathogens. This investigation examined the distribution and presence of tick-borne bacterial pathogens in Florida. Ticks were collected by flagging at 41 field sites, spanning the climatic regions of mainland Florida. DNA was extracted individually from 1608 ticks and screened for <i>Anaplasma</i>, <i>Borrelia</i>, <i>Ehrlichia</i> and <i>Rickettsia</i> using conventional PCR and primers that amplified multiple species for each genus. PCR positive samples were Sanger sequenced. Four species of ticks were collected: <i>Amblyomma americanum</i>, <i>Amblyomma maculatum</i>, <i>Dermacentor variabilis,</i> and <i>Ixodes scapularis</i>. Within these ticks, six bacterial species were identified: <i>Borrelia burgdorferi</i>, <i>Borrelia lonestari</i>, <i>Ehrlichia ewingii</i>, <i>Rickettsia</i> <i>amblyommatis</i>, <i>Rickettsia andeanae</i>, <i>Rickettsia</i> <i>parkeri</i>, and <i>Rickettsia</i> endosymbionts. Pathogenic <i>Borrelia</i>, <i>Ehrlichia</i>, and <i>Rickettsia</i> species were all detected in the North and North-Central Florida counties; however, we found only moderate concordance between the distribution of ticks infected with pathogenic bacteria and human cases of tick-borne diseases in Florida. Given the diversity and numerous bacterial species detected in ticks in Florida, further investigations should be conducted to identify regional hotspots of tick-borne pathogens.https://www.mdpi.com/2075-4450/10/9/297tick-borne diseaseFloridasurveillance<i>Rickettsia</i><i>Borrelia</i><i>Ehrlichia</i><i>Amblyomma americanum</i>
spellingShingle Carrie E. De Jesus
Claudia Ganser
William H. Kessler
Zoe S. White
Chanakya R. Bhosale
Gregory E. Glass
Samantha M. Wisely
A Survey of Tick-Borne Bacterial Pathogens in Florida
Insects
tick-borne disease
Florida
surveillance
<i>Rickettsia</i>
<i>Borrelia</i>
<i>Ehrlichia</i>
<i>Amblyomma americanum</i>
title A Survey of Tick-Borne Bacterial Pathogens in Florida
title_full A Survey of Tick-Borne Bacterial Pathogens in Florida
title_fullStr A Survey of Tick-Borne Bacterial Pathogens in Florida
title_full_unstemmed A Survey of Tick-Borne Bacterial Pathogens in Florida
title_short A Survey of Tick-Borne Bacterial Pathogens in Florida
title_sort survey of tick borne bacterial pathogens in florida
topic tick-borne disease
Florida
surveillance
<i>Rickettsia</i>
<i>Borrelia</i>
<i>Ehrlichia</i>
<i>Amblyomma americanum</i>
url https://www.mdpi.com/2075-4450/10/9/297
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