A5015790267- Indigenous Studies and Ecology
- Animal Behavior and Welfare Studies
- Viral Infections and Vectors
- Wildlife Ecology and Conservation
- Zoonotic diseases and public health
- Animal Disease Management and Epidemiology
- Vector-borne infectious diseases
- Stellar, planetary, and galactic studies
- Effects of Environmental Stressors on Livestock
- Viral gastroenteritis research and epidemiology
- Mosquito-borne diseases and control
- Listeria monocytogenes in Food Safety
- Astronomy and Astrophysical Research
- Microbial infections and disease research
- Climate change and permafrost
- Hair Growth and Disorders
- Vector-Borne Animal Diseases
- Cryospheric studies and observations
- Spectroscopy and Laser Applications
- Astronomical Observations and Instrumentation
- Microbial Inactivation Methods
- Plant and fungal interactions
- Plant and Fungal Interactions Research
- Bacillus and Francisella bacterial research
- Animal Nutrition and Physiology
University of Calgary
2017-2025
University of California, Davis
2021-2025
Université de Montréal
2025
Cegep de Saint Hyacinthe
2025
Washington State University
2024
Washington State Department of Agriculture
2024
Santé Publique France
2022
Centre de recherche en Epidémiologie et Santé des Populations
2021
Institut Pasteur du Cambodge
2017-2018
Effective wildlife management requires accurate and timely information on conservation status trends, knowledge of the factors driving population change. Reliable monitoring health, including disease, body condition, trends demographics, is central to achieving this, but conventional scientific alone often not sufficient. Combining different approaches types can provide a more holistic understanding than science bridge gaps in remote sparsely populated areas. Inclusion traditional ecological...
ABSTRACT Understanding the drivers influencing ungulate population dynamics is crucial for developing conservation and management strategies to support wildlife health. Trace macro elements are vital growth, reproduction survival. Thus, trajectory of populations may be associated with element imbalances. Element concentrations can measured in hair, an increasingly recognised bio‐monitoring tool. However, a better understanding relevance wild needed. This study aimed assess if profiles hair...
Introduction Integrated crop-livestock systems (ICLS) use animals to graze crop residues or cover crops before planting fresh produce and provide ecosystem services support organic vegetable production. However, there is a risk of foodborne pathogen transfer because grazing may introduce enteric pathogens into the soil via animal feces, which subsequently be transferred produce. Methods To examine effect on contamination by in ICLS, three-year (2019–2021) experimental study was conducted...
Japanese encephalitis is mainly considered a rural disease, but there growing evidence of peri-urban and urban transmission in several countries, including Cambodia. We, therefore, compared the epidemiologic dynamic between setting We monitored two cohorts 15 pigs determined force infection–rate at which seronegative become positive–in study farms located area, respectively. also studied mosquito abundance diversity proximity pigs, as well host densities both areas. All seroconverted before...
Introduction Climate change is increasing vulnerability to food insecurity and biodiversity loss for many Indigenous Peoples globally. For Inuit, sovereignty one expression of self-determination, it includes the right all Inuit define their own conservation policies. Caribou particularly pertinent because central role caribou play in systems. The “Dolphin Union” (DU) herd a critical component systems Canadian Arctic has declined by 89% 2020 (3,815) from peak measured aerial survey 1997...
Context. Despite recent progress, the question of what regulates star formation efficiency (SFE) in galaxies remains one most debated problems astrophysics. According to dominant picture, (SF) is regulated by turbulence and feedback, SFE ~1–2% or less per local free-fall time on all scales from Galactic clouds high-redshift galaxies. In an alternate scenario, rate (SFR) galactic disks linearly proportional mass dense gas above some critical density threshold ~10 4 cm –3 . Aims. We aim...
Muskoxen (Ovibos moschatus) are increasingly subject to multiple new stressors associated with unprecedented climate change and increased anthropogenic activities across much of their range. Hair may provide a measurement stress hormones (glucocorticoids) over periods weeks months. We developed reliable method quantify cortisol in the qiviut (wooly undercoat) muskoxen using liquid chromatography coupled tandem mass spectrometry. then applied this technique determine natural variability...
Background Muskoxen are a key species of Arctic ecosystems and important for food security socio-economic well-being many Indigenous communities in the Subarctic. Between 2009 2014, bacterium Erysipelothrix rhusiopathiae was isolated first time this association with multiple mortality events Canada Alaska, raising questions regarding spatiotemporal occurrence pathogen its potential impact on muskox populations. Materials methods We adapted commercial porcine E. enzyme-linked immunosorbent...
Japanese encephalitis remains the most important cause of viral in humans several southeast Asian countries, including Cambodia, causing at least 65 000 cases per year. This vector-borne zoonosis - caused by virus (JEV) is considered to be a rural disease and transmitted mosquitoes, with birds pigs being natural reservoirs, while are accidental hosts. In this study we report first two JEV isolations Cambodia from human studies on aetiology central nervous system disease, conducted major...
Indigenous knowledge provides valuable information on wildlife health and ecology, contributing to a broader understanding of the patterns phenomena observed. Muskoxen (Ovibos moschatus), an important species for subsistence culture Inuit communities in Arctic, are increasingly exposed diverse stressors linked rapid climate change other anthropogenic changes. Identifying these their impacts muskoxen will inform management, monitoring, future research. To achieve this understanding, we...
Introduction Biological soil amendments, including raw or untreated manure, are currently used to improve fertility, especially in organic operations that prohibit use of synthetic fertilizers. However, addition manure may pose a risk contamination fresh produce by pathogens public health significance, Listeria monocytogenes . Organic growers follow United States Department Agriculture (USDA) National Program regulations for use, which stipulate harvest should commence no earlier than 90-...
The number of small-scale and backyard operations has increased in the United States during past decade, but there is currently a lack outreach efforts readily-available educational materials targeting these farming systems. We developed webinar series on biosecurity to provide training for producers, tools that can be used by local veterinarians extension educators disseminate knowledge consistent recommendations more effectively. Fewer people attended webinars than registered, suggesting...
In 2019, California accounted for approximately 40% of organic products in the US, and dairy milk were top commodity state. The objective this study was to describe cattle farmers' management practices perceptions diseases California. A survey inquiring about farm history demographics, animal diseases, parasite problems, housing pasture management, education, mailed 160 farms, which 36 (22.5%) responded. Among respondents, majority (83.9%) located Northern California; median size 310 cows,...
Glucocorticoid (GC) levels are increasingly and widely used as biomarkers of hypothalamic-pituitary-adrenal (HPA) axis activity to study the effects environmental changes other perturbations on wildlife individuals populations. However, identifying intrinsic extrinsic factors that influence GC is a key step in endocrinology studies ensure accurate interpretation responses. In muskoxen, qiviut (fine woolly undercoat hair) cortisol concentration an integrative biomarker HPA over course hair's...
A wild muskox (Ovibos moschatus) with dermatitis typical of contagious ecthyma had secondary bacterial septicemia Corynebacterium freneyi that included laminitis, hepatitis, and suppurative encephalitis. This case supports the association between orf virus infection fatal infections, which may have contributed to population declines on Victoria Island, Canada.
Muskoxen ( Ovibos moschatus) , a taxonomically unique Arctic species, are increasingly exposed to climate and other anthropogenic changes. It is critical develop validate reliable tools monitor their physiological stress response in order assess the impacts of these Here, we measured fecal glucocorticoid metabolite (FGM) levels administration adrenocorticotropic hormone (ACTH) winter (1 IU/kg) summer (2 using two enzyme immunoassays, one targeting primarily cortisol corticosterone. Fecal...
Orf virus (genus Parapoxvirus) has been associated with gross skin lesions on muskoxen (Ovibos moschatus) from Victoria Island, Nunavut, Canada, where muskox populations are experiencing population declines. causes painful proliferative and necrotizing dermatitis upon viral replication shedding, which may lead to animal morbidity or mortality through secondary infections starvation. Herpesvirus, known cause mucosa during active replication, also documented in but date not clinical disease....
Segmental analyses of hair may be useful for measuring biomarkers over several seasons to years from a single sample. To attribute segments specific time periods, known chronological marker, or growth rate, is needed. We examined guard rates captive muskoxen (Ovibos moschatus) in Fairbanks, Alaska, USA. sought determine if general rate could applied across muskox populations, thus facilitating the use segmental various biomarkers. used archived samples 16 that had hairs sampled at six, 14,...
Despite recent progress, the question of what regulates star formation efficiency in galaxies remains one most debated problems astrophysics. According to dominant picture, (SF) is regulated by turbulence and feedback, SFE 1-2% per local free-fall time. In an alternate scenario, SF rate galactic disks linearly proportional mass dense gas above a critical density threshold. We aim discriminate between these two pictures thanks high-resolution observations tracing young stellar objects (YSOs)...
The James Webb Space Telescope (JWST) observed a section of the star forming region NGC 3324 during its Early Release Observations. We make use Probabilistic Random Forest machine learning model to identify YSOs within field view. build matched catalog from photometry data products available on Mikulski Archive and retrieve 8632 objects, which Spitzer previously detected 458. classified train sample data. total 72 YSO candidates field, 52 are only visible with JWST.