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2 de jul. de 2024 · In recent years, observations of polar bears in Alaska broadening somewhat diet to include harder foods (Petherick et al. 2021) Foraging on seal carcasses, at bowhead bone piles (discards of native subsistence hunting), and from human trash. Birds and their eggs.
17 de jun. de 2024 · Compared to polar bears, we found that hypermethylated and lowly expressed genes in giant pandas were significantly enriched for the metabolism of xenobiotics by cytochrome P450 (GSTK1, HSD11B1), drug metabolism-other enzymes (CES1, UCK1).
12 de jun. de 2024 · Polar bears are iconic symbols of the Arctic, known for their majestic appearance and incredible adaptability to survive in one of the harshest environments on Earth. But have you ever wondered what makes up their diet?
29 de jun. de 2024 · Polar bear, great white northern bear found throughout the Arctic region. The polar bear is the largest and most powerful carnivore on land, a title it shares with a subspecies of brown bear called the Kodiak bear.
2 de jul. de 2024 · Diet. Highly carnivorous diet — mainly marine mammals, particularly blubber and skin of ringed seals. Population size largely determined by ringed seal availability. Also eat harp, hooded, bearded, and harbor seals. Occasionally, walruses, beluga whales, narwhals, and carcasses of bowhead whales.
17 de jun. de 2024 · To investigate the potential contribution of epigenetic to the adaptive evolution of bamboo-eating in giant and red pandas, we performed hepatic comparative transcriptome and methylome analyses between bamboo-eating pandas and carnivorous polar bears (Ursus maritimus). We found that genes involved in carbohydrate, lipid, amino acid, and protein ...
25 de jun. de 2024 · The results suggested absence of nutrient specialization and mild ingredient specialization in a European brown bear Ursus arctos population via the Proportional Similarity Index, which appeared to be an outcome of the ecological circumstances rather than specific individual traits. Generalist populations often harbor individual dietary specialists. Whether using a narrower set of resources ...
