Tularemia in the Arctic

Hansen, Cristina M.; Dresvyannikova, Svetlana

doi:10.1007/978-3-030-87853-5_17

Arctic One Health 2022

DOI: 10.1007/978-3-030-87853-5_17

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Tularemia in the Arctic

Cristina M. Hansen

Svetlana Dresvyannikova

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2024

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Cited by 2 publications

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Increased pathogen exposure of a marine apex predator over three decades

Rode,

Van Hemert,

Wilson

et al. 2024

PLoS ONE

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Environmental changes associated with global warming create new opportunities for pathogen and parasite transmission in Arctic wildlife. As an apex predator ranging over large, remote areas, changes in pathogens and parasites in polar bears are a useful indicator of changing transmission dynamics in Arctic ecosystems. We examined prevalence and risk factors associated with exposure to parasites and viral and bacterial pathogens in Chukchi Sea polar bears. Serum antibodies to six pathogens were detected and prevalence increased between 1987–1994 and 2008–2017 for five: Toxoplasma gondii, Neospora caninum, Francisella tularensis, Brucella abortus/suis, and canine distemper virus. Although bears have increased summer land use, this behavior was not associated with increased exposure. Higher prevalence of F. tularensis, Coxiella burnetii, and B. abortus/suis antibodies in females compared to males, however, could be associated with terrestrial denning. Exposure was related to diet for several pathogens indicating increased exposure in the food web. Elevated white blood cell counts suggest a possible immune response to some pathogens. Given that polar bears face multiple stressors in association with climate change and are a subsistence food, further work is warranted to screen for signs of disease.

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Increased pathogen exposure of a marine apex predator over three decades

Rode,

Van Hemert,

Wilson

et al. 2024

PLoS ONE

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A Serologic Survey of Francisella Tularensis Exposure in Wildlife on the Arctic Coastal Plain of Alaska, Usa

Smith

Hemert

Atwood

et al. 2022

Journal of Wildlife Diseases

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Tularemia in the Arctic

Cited by 2 publications

References 50 publications

Increased pathogen exposure of a marine apex predator over three decades

Increased pathogen exposure of a marine apex predator over three decades

A Serologic Survey of Francisella Tularensis Exposure in Wildlife on the Arctic Coastal Plain of Alaska, Usa

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