Tammi L. Johnson

Contrasting epigenetics of Ixodes scapularis populations

Stephanie Guzman-Valencia, Jacob Cassens, Perot Saelao, Abagail Leal et autres

Hard ticks are a source of public health concern, in part due to their ability to inhabit different environments. In the United States (US), blacklegged ticks (Ixodes scapularis Say), the primary vector of Lyme disease, exhibit various phenotypes depending on their geographic …

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Identification of Potential Amblyomma americanum Antigens After Vaccination with Tick Extracellular Vesicles in White-Tailed Deer

Adela S. Oliva Chávez, Julia González, Cristina Harvey, Cárita de Souza Ribeiro-Silva et autres

Background/Objective: Anti-tick vaccines represent a promising alternative to chemical acaricides for the management of ticks on wildlife; however, little progress has been made to produce a vaccine effective in wild hosts that are critical for tick reproduction, such as the white-tailed deer …

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Identification of Amblyomma americanum antigens after vaccination with tick extracellular vesicles in white-tailed deer

Adela S. Oliva Chávez, Julia Gonzalez Gonzalez, Cristina Harvey, Cárita de Souza Ribeiro-Silva et autres

Abstract Anti-tick vaccines represent a promising alternative to chemical acaricides for the management of ticks on wildlife; however little progress has been made to produce a vaccine effective in wild hosts that are critical for tick reproduction, such as the white-tailed deer …

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Evaluation of tick salivary and midgut extracellular vesicles as anti-tick vaccines in White-tailed deer (Odocoileus virginianus)

Julia González, Cristina Harvey, Cárita de Souza Ribeiro-Silva, Brenda Leal-Galvan et autres

Current tick control measures are focused on the use of synthetic acaricides and personal protective measures. However, the emergence of acaricide resistance and the maintenance of tick populations in wildlife has precluded the efficient management of ticks. Thus, host-targeted, non-chemical control measures …

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The natural history of Amblyomma maculatum sensu lato, a vector of Rickettsia parkeri rickettsiosis, in southern Arizona

Geoffrey E. Lynn, Taylor J. Ludwig, Michelle Allerdice, Christopher D. Paddock et autres

Amblyomma maculatum sensu lato (s.l.) is an ixodid tick found in the semi-arid southwestern United States and northern Mexico where it is a parasite of medical and veterinary significance, including as a vector for Rickettsia parkeri, a cause of spotted fever rickettsiosis …

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Evaluation of tick salivary and midgut extracellular vesicles as anti-tick vaccines in White-tailed deer ( Odocoileus virginianus )

Julia Gonzalez Gonzalez, Cristina Harvey, Cárita de Souza Ribeiro-Silva, Brenda Galvan-Leal et autres

Abstract Current tick control measures are focused on the use of synthetic acaricides and personal protective measures. However, the emergence of acaricide resistance and the maintenance of tick populations in wildlife has precluded the efficient management of ticks. Thus, host-targeted, non-chemical control …

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Nilgai antelope display no signs of infection upon experimental challenge with a virulent Babesia bovis strain

Tammi L. Johnson, Kelly A. Persinger, Naomi S. Taus, Sara K. Davis et autres

BACKGROUND: Bovine babesiosis is caused by infection with the protozoal parasite Babesia bovis, which is transmitted by Rhipicephalus (Boophilus) spp. It can cause mortality rates up to 90% in immunologically naive Bos taurus cattle. In south Texas, R. (B.) microplus is known …

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Evaluation of Tick Salivary and Midgut Extracellular Vesicles as Anti-Tick Vaccines in White-Tailed Deer (Odocoileus Virginianus)

Julia González González, Cristina Harvey, Cárita de Souza Ribeiro-Silva, Brenda Leal-Galvan et autres

Feeding and reproductive parameters of adult female Ixodes scapularis (Acari: Ixodidae) and Amblyomma americanum parasitizing white-tailed deer (Odocoileus virginianus)

Alec S Baker, Kelly A. Persinger, Pia U. Olafson, Albert Mulenga et autres

Abstract White-tailed deer Odocoileus virginianus (Zimmermann) (Artiodactyla: Cervidae) are the main host for adult Ixodes scapularis Say (Acari: Ixodidae) (blacklegged tick) and all stages of Amblyomma americanum Linnaeus (Acari: Ixodidae) (lone star tick). However, literature describing the feeding and reproductive parameters of …

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Artificial infestation of white-tailed deer with ticks (Acari: Ixodidae) to study tick–host interactions

Alec S Baker, Kelly A. Persinger, Pia U. Olafson, Tammi L. Johnson

White-tailed deer (Odocoileus virginianus) are a main host for the adult life stages of tick species of medical and veterinary importance. Since white-tailed deer play a vital role in tick ecology, research has been conducted to understand this tick-host relationship. To date, …

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Seasonal activity patterns of host-seeking Ixodes scapularis (Acari: Ixodidae) in Minnesota, 2015–2017

James C. Burtis, Jenna Bjork, Tammi L. Johnson, Elizabeth Schiffman et autres

As the primary vector of Lyme disease spirochetes and several other medically significant pathogens, Ixodes scapularis presents a threat to public health in the United States. The incidence of Lyme disease is growing rapidly in upper midwestern states, particularly Michigan, Minnesota, and …

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Evaluation of the in vitro acaricidal effect of five organic compounds on the cattle fever tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)

Adela S. Oliva Chávez, Stephanie Guzman Valencia, Geoffrey E. Lynn, Charluz M Arocho Rosario et autres

The cattle fever tick, Rhipicephalus (Boophilus) microplus, is the most economically important tick worldwide. Infestations with this tick can lead to direct damage and cattle mortality due to the transmission of potentially deadly pathogens. Management of this tick species has been focused …

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