Publications by authors named "F Mavrot"
Widespread geographic distribution of filarioid nematodes in caribou ( sspp.) in Canada.
Int J Parasitol Parasites Wildl
April 2025
The caribou ( sspp.) is a keystone wildlife species in northern ecosystems that plays a central role in the culture, spirituality and food security of Indigenous People. The Arctic is currently experiencing an unprecedented rate of climate change, including warming temperatures and altered patterns of precipitation.
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- Polar bears' life is closely linked to sea ice and their prey in the Arctic, which is changing due to climate warming and leading to more diseases in these bears.
- A study of 180 Beaufort Sea polar bears found that 27.2% tested positive for the pathogen Erysipelothrix rhusiopathiae, which is known to infect both domestic and wild animals.
- Factors like increased predation on ringed seals and negative winter Arctic Oscillation years were associated with higher exposure to this pathogen, suggesting that changes in the seal population affect polar bears' health.
Background: Muskoxen are important ecosystem components and provide food, economic opportunities, and cultural well-being for Indigenous communities in the Canadian Arctic. Between 2010 and 2021, Erysipelothrix rhusiopathiae was isolated from carcasses of muskoxen, caribou, a seal, and an Arctic fox during multiple large scale mortality events in the Canadian Arctic Archipelago. A single strain ('Arctic clone') of E.
View Article and Find Full Text PDFBrucellosis is an important zoonotic disease affecting animals and subsistence harvesters in the circumarctic. We investigated recent trends (2015-2022) of brucellosis seropositivity in caribou () and muskoxen () in the Central Canadian Arctic by using data from community-based wildlife health surveillance programs. The overall sample prevalence of a antibodies was 10.
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- - Orf virus, linked to severe skin lesions in muskoxen and contributing to population declines, was studied in Canadian Arctic muskoxen to assess its genetic diversity and prevalence alongside herpesvirus.
- - Tissue samples from 60 muskoxen, collected between 2015 and 2017, revealed 11 animals with lesions consistent with orf virus infection, while 33 showed evidence of muskox rhadinovirus 1, indicating a high rate of co-infection.
- - Phylogenetic analysis showed a unique strain of orf virus endemic to muskoxen in the region, but no significant histological evidence of disease caused by herpesvirus was found, suggesting it may remain subclinical in affected animals. *