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Prevalence and density of Elaphostrongylus rangiferi larvae in faecal samples of semi-domestic reindeer (Rangifer tarandus tarandus) in Norway 2013-16.
Acta Vet Scand
January 2025
Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Framstredet 39, Breivika, Tromsø, N-9019, Norway.
Background: The reindeer brainworm, Elaphostrongylus rangiferi, is a protostrongylid parasite of reindeer that has caused severe disease outbreaks in reindeer husbandry. E. rangiferi is considered ubiquitous in Norway, though most published prevalence studies are from Finnmark county only.
View Article and Find Full Text PDFToxic metals and other elements in Svalbard reindeer: Establishing baselines and assessing non-invasive sampling for biomonitoring.
Sci Total Environ
January 2025
Department of Arctic Technology, University Centre in Svalbard (UNIS), PO Box 156, N-9171 Longyearbyen, Norway; Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. Electronic address:
Pollutants emitted from all over the world may reach pristine areas, such as the Arctic. The Svalbard reindeer (Rangifer tarandus platyrhynchus) has been the subject of a few studies reporting toxic metal concentrations. However, these studies either date back a few decades or exclusively used non-invasive samples (e.
View Article and Find Full Text PDFPolymorphism of Genes Potentially Affecting Growth and Body Size Suggests Genetic Divergence in Wild and Domestic Reindeer () Populations.
Genes (Basel)
December 2024
School of Natural Sciences, University of Kent, Canterbury CT2 7NJ, UK.
: A combination of increased human presence in the Arctic zone alongside climate change has led to a decrease in the number of wild reindeer (). Studying the genetic potential of this species will aid in conservation efforts, while simultaneously promoting improved meat productivity in domestic reindeer. Alongside reducing feed costs, increasing disease resistance, etc.
View Article and Find Full Text PDFComparison of Fecal Microbiota and Metabolites Between Captive and Grazing Male Reindeer.
Animals (Basel)
December 2024
College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
The reindeer () is a circumpolar member of the Cervidae family, and has adapted to a harsh environment. Summer is a critical period for reindeer, with peak digestibility facilitating body fat accumulation. The gut microbiota plays a pivotal role in nutrient metabolism, and is affected by captivity.
View Article and Find Full Text PDFIn vivo functional significance of direct physical interaction between Period and Cryptochrome in mammalian circadian rhythm generation.
PNAS Nexus
December 2024
The Research Institute for Time Studies, Yamaguchi University, Yamaguchi 753-8511, Japan.
In the current model, the auto-negative feedback action of Period (Per) and Cryptochrome (Cry) on their own transcription is the hallmark mechanism driving cell-autonomous circadian rhythms. Although this model likely makes sense even if Per and Cry undertake this action in a mutually independent manner, many studies have suggested the functional significance of direct physical interaction between Per and Cry. However, even though the interaction is a biochemical process that pertains to the fundamentals of the circadian oscillator, its in vivo contribution to circadian rhythm generation remains undefined.
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