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8 results on '"Wyrosdick, Heidi M."'

3. Parasite Prevalence in Feral Swine (Sus scrofa) from the Great Smoky Mountains National Park, USA.

Author

England, J. Conner, Wyrosdick, Heidi M., Baker, Eliza L., Stiver, William H., Williamson, Ryan H., and Gerhold Jr., Richard W.

Abstract

Feral swine (Sus scrofa) are an introduced species to the Great Smoky Mountains National Park (GSMNP), US, and serve as carriers of several diseases that are considered a threat to other wildlife, domestic animals, and humans. During 2013 and 2015, fecal samples from 67 feral swine from the GSMNP within both Tennessee and North Carolina, US, were opportunistically collected as part of a feral swine removal program and submitted to the University of Tennessee College of Veterinary Medicine, Knoxville, Tennessee, for parasite screening by centrifugal sugar flotation. Ten taxa from the phyla Acanthocephala, Apicomplexa, and Nematoda were identified: Ascaris spp., Strongylid-type spp., Capillaria spp., Trichuris suis, Metastrongylus spp., Macracanthorhynchus spp., Coccidia, Sarcocystis spp., and Cryptosporidium spp. In 98.5% of samples, at least one parasite was found. No differences in parasite prevalence or species diversity were noted based on state of collection (Tennessee or North Carolina), sex, or age. The high prevalence of gastrointestinal parasites in these feral swine, some of which are zoonotic, represents a potential public health risk as well as a concern for free-range swine farmers. [ABSTRACT FROM AUTHOR]

Published
2023
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4. Rapid Discovery and Detection of Haemaphysalis longicornis through the Use of Passive Surveillance and Collaboration: Building a State Tick-Surveillance Network

Author

Trout Fryxell, Rebecca T., Vann, Dené N., Butler, Rebecca A., Paulsen, Dave J., Chandler, Jennifer G., Willis, Micah P., Wyrosdick, Heidi M., Schaefer, John J., Gerhold, Richard W., Grove, Daniel M., Ivey, Jennie Z., Thompson, Kevin W., Applegate, Roger D., Sweaney, Joy, Daniels, Sterling, Beaty, Samantha, Balthaser, Douglas, Freye, James D., Mertins, James W., Bonilla, Denise L., Lahmers, Kevin K., and Biomedical Sciences and Pathobiology

Subjects
parasitic diseases, detection, distribution zoonoses, OneHealth, bacterial infections and mycoses, Collaboration, tick
Abstract

Between March 2019 and February 2020, Asian long-horned ticks (Haemaphysalis longicornis Neumann, 1901) were discovered and collected for the first time in one middle and seven eastern Tennessee counties, facilitated by a newly developed passive and collaborative tick-surveillance network. Network collaborators included federal, state, county, university, and private resource personnel working with companion animals, livestock, and wildlife. Specimens were collected primarily from dogs and cattle, with initial detections of female adult stage ticks by stakeholders associated with parasitology positions (e.g., entomologists and veterinary parasitologists). Initial county tick detections were confirmed with morphological and molecular identifications, and then screened for the presence of animal-associated pathogens (Anaplasma marginale, Babesia species, Ehrlichia species, and Theileria orientalis), for which all tests were negative. Herein, we describe the identification and confirmation of these tick specimens as well as other results of the surveillance collaboration. Published version

Published
2021

5. Rapid Discovery and Detection of Haemaphysalis longicornis through the Use of Passive Surveillance and Collaboration: Building a State Tick-Surveillance Network

Author

Trout Fryxell, Rebecca T., primary, Vann, Dené N., additional, Butler, Rebecca A., additional, Paulsen, Dave J., additional, Chandler, Jennifer G., additional, Willis, Micah P., additional, Wyrosdick, Heidi M., additional, Schaefer, John J., additional, Gerhold, Richard W., additional, Grove, Daniel M., additional, Ivey, Jennie Z., additional, Thompson, Kevin W., additional, Applegate, Roger D., additional, Sweaney, Joy, additional, Daniels, Sterling, additional, Beaty, Samantha, additional, Balthaser, Douglas, additional, Freye, James D., additional, Mertins, James W., additional, Bonilla, Denise L., additional, and Lahmers, Kevin, additional

Published
2021
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6. Rapid Discovery and Detection of Haemaphysalis longicornis through the Use of Passive Surveillance and Collaboration: Building a State Tick-Surveillance Network

Author

Biomedical Sciences and Pathobiology, Trout Fryxell, Rebecca T., Vann, Dené N., Butler, Rebecca A., Paulsen, Dave J., Chandler, Jennifer G., Willis, Micah P., Wyrosdick, Heidi M., Schaefer, John J., Gerhold, Richard W., Grove, Daniel M., Ivey, Jennie Z., Thompson, Kevin W., Applegate, Roger D., Sweaney, Joy, Daniels, Sterling, Beaty, Samantha, Balthaser, Douglas, Freye, James D., Mertins, James W., Bonilla, Denise L., Lahmers, Kevin K., Biomedical Sciences and Pathobiology, Trout Fryxell, Rebecca T., Vann, Dené N., Butler, Rebecca A., Paulsen, Dave J., Chandler, Jennifer G., Willis, Micah P., Wyrosdick, Heidi M., Schaefer, John J., Gerhold, Richard W., Grove, Daniel M., Ivey, Jennie Z., Thompson, Kevin W., Applegate, Roger D., Sweaney, Joy, Daniels, Sterling, Beaty, Samantha, Balthaser, Douglas, Freye, James D., Mertins, James W., Bonilla, Denise L., and Lahmers, Kevin K.

Abstract

Between March 2019 and February 2020, Asian long-horned ticks (Haemaphysalis longicornis Neumann, 1901) were discovered and collected for the first time in one middle and seven eastern Tennessee counties, facilitated by a newly developed passive and collaborative tick-surveillance network. Network collaborators included federal, state, county, university, and private resource personnel working with companion animals, livestock, and wildlife. Specimens were collected primarily from dogs and cattle, with initial detections of female adult stage ticks by stakeholders associated with parasitology positions (e.g., entomologists and veterinary parasitologists). Initial county tick detections were confirmed with morphological and molecular identifications, and then screened for the presence of animal-associated pathogens (Anaplasma marginale, Babesia species, Ehrlichia species, and Theileria orientalis), for which all tests were negative. Herein, we describe the identification and confirmation of these tick specimens as well as other results of the surveillance collaboration.

Published
2021

8. Investigating seagrass in Toxoplasma gondii transmission in Florida (Trichechus manatus latirostris) and Antillean (T. m. manatus) manatees.

Author

Wyrosdick HM, Gerhold R, Su C, Mignucci-Giannoni AA, Bonde RK, Chapman A, Rivera-Pérez CI, Martinez J, and Miller DL

Subjects
Animals, Animals, Wild, Florida epidemiology, Puerto Rico epidemiology, Toxoplasmosis, Animal blood, Toxoplasmosis, Animal parasitology, Trichechus manatus blood, Plants parasitology, Toxoplasma, Toxoplasmosis, Animal transmission, Trichechus manatus parasitology
Abstract

Toxoplasma gondii is a feline protozoan reported to cause morbidity and mortality in manatees and other marine mammals. Given the herbivorous nature of manatees, ingestion of oocysts from contaminated water or seagrass is presumed to be their primary mode of infection. The objectives of this study were to investigate oocyst contamination of seagrass beds in Puerto Rico and determine the seroprevalence of T. gondii in Antillean (Trichechus manatus manatus) and Florida (T. m. latirostris) manatees. Sera or plasma from Antillean (n = 5) and Florida (n = 351) manatees were tested for T. gondii antibodies using the modified agglutination test. No T. gondii DNA was detected via PCR in seagrass samples (n = 33) collected from Puerto Rico. Seroprevalence was 0%, suggesting a lower prevalence of T. gondii in these manatee populations than previously reported. This was the first study to investigate the potential oocyst contamination of the manatee diet, and similar studies are important for understanding the epidemiology of T. gondii in herbivorous marine mammals.

Published
2017
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