In a recent study published in Ecology and Evolution, researchers from UC College of Arts and Sciences explored an interesting behavior of caribou in the Arctic. They found that these animals, especially females, chew on shed antlers. This behavior seems to be linked to the nutrition needs during calving season.
The research focused on the Arctic National Wildlife Refuge, a key migration spot for the Porcupine caribou herd, which travels over 1,500 miles each year. Scientists collected antlers and bones from the area and discovered that caribou often gnaw on shed antlers to get vital minerals like calcium and phosphorus.
Most of the antlers collected showed clear signs of gnawing, with 86% examined displaying these marks. Surprisingly, 99% of the marks were attributed to caribou themselves. Other animals, like rodents, were responsible for less than 4% of the gnaw marks observed.
“Caribou are really selective,” said Associate Professor Joshua Miller. “They focus mainly on the antlers, especially at the tips.” This selective eating likely benefits the mothers and their calves. Antlers can take many years to decompose in the Arctic’s cold conditions, providing a consistent source of nutrients when they are most needed.
This unique behavior sheds light on how animals adapt to their environment. As the climate changes, understanding these behaviors is essential. Recent studies indicate that shifting weather patterns may impact food availability for caribou, making nutrient-rich sources like antlers even more critical for their survival.
By analyzing the past behaviors of caribou and their reliance on both environment and diet, we can gain insights into their future in a changing world. This research not only highlights the resilience of caribou but also emphasizes the importance of preserving their habitats.
For a deeper look into this fascinating study and its implications, check out the full article in Scientific American.
Source link
Department of Geosciences,In The News,Research,College of Arts and Sciences
