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A multi-seasonal study investigating the phenology, host and habitat associations, and pathogens of Haemaphysalis longicornis in Virginia, U.S.A.

Author information

Affiliations

  • 1. Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens GA, USA; Center for the Ecology of Infectious Diseases, Odum School of Ecology, University of Georgia, Athens GA, USA.
      Authors
    • Thompson AT 1
    (1 author)
  • 2. Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens GA, USA; Warnell School of Forestry and Natural Resources, University of Georgia, Athens GA, USA.
      Authors
    • White SA 2
    • Garrett KB 2
    • Wyckoff ST 2
    (3 authors)
  • 3. Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens GA, USA.
      Authors
    • Shaw D 3
    • Doub EE 3
    • Ruder MG 3
    (3 authors)
  • 4. Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens GA, USA; Center for the Ecology of Infectious Diseases, Odum School of Ecology, University of Georgia, Athens GA, USA; Warnell School of Forestry and Natural Resources, University of Georgia, Athens GA, USA.
      Authors
    • Yabsley MJ 4
    (1 author)

ORCIDs linked to this article

Ticks and Tick-borne Diseases, 17 Jun 2021, 12(5):101773
https://doi.org/10.1016/j.ttbdis.2021.101773 PMID: 34229999 

This article is based on a previously available preprint.

Abstract 

Understanding the abiotic and biotic variables affecting tick populations is essential for studying the biology and health risks associated with vector species. We conducted a study on the phenology of exotic Haemaphysalis longicornis (Asian longhorned tick) at a site in Albemarle County, Virginia, United States. We also assessed the importance of wildlife hosts, habitats, and microclimate variables such as temperature, relative humidity, and wind speed on this exotic tick's presence and abundance. In addition, we determined the prevalence of infection with selected tick-borne pathogens in host-seeking H. longicornis. We determined that the seasonal activity of H. longicornis in Virginia was slightly different from previous studies in the northeastern United States. We observed nymphal ticks persist year-round but were most active in the spring, followed by a peak in adult activity in the summer and larval activity in the fall. We also observed a lower probability of collecting host-seeking H. longicornis in field habitats and the summer months. In addition, we detected H. longicornis on several wildlife hosts, including coyote (Canis latrans), eastern cottontail (Sylvilagus floridanus), raccoon (Procyon lotor), Virginia opossum (Didelphis virginiana), white-tailed deer (Odocoileus virginianus), woodchuck (Marmota monax), and a Peromyscus sp. mouse. This latter record is the first detection of a larval H. longicornis on a North American rodent host important to the enzootic maintenance of tick-borne pathogens of humans and animals. Finally, we continued to detect the exotic piroplasm parasite, Theileria orientalis Ikeda, in H. longicornis as well as other pathogens, including Rickettsia felis, Anaplasma phagocytophilum (AP-1), and a Hepatozoon sp. previously characterized in Amblyomma americanum. These represent some of the first detections of arthropod-borne pathogens native to the United States in host-seeking H. longicornis. These data increase our understanding of H. longicornis biology in the United States and provide valuable information into the future health risks associated with this tick and pathogens.

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Read article at publisher's site: https://doi.org/10.1016/j.ttbdis.2021.101773

Read article for free, from open access legal sources, via Unpaywall: http://manuscript.elsevier.com/S1877959X21001266/pdf/S1877959X21001266.pdfUnpaywall

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