The Inuit refer to the animal as nanook transliterated as nanuq in the Inupiat language. The polar bear was previously considered to be in its own genusThalarctos.
What is a Spirit Bear? Spirit bears are rare black bears with white or creamy fur, brown eyes, dark nose pads, and nearly white claws.
They are not polar bears or albinos. They are considered a subspecies of black bears called Kermode bears Ursus americanus kermodeii.
About 20 percent of the bears on those islands are white; the rest are black. On the mainland, the percentage of white bears drops off drastically with distance from those islands. Kermit Rutland and Craig Newton studied the genetics of white black bears.
The white fur of Kermode bears is the result of a double recessive gene unique to this subspecies. A single nucleotide replacement in the melanocortin-1 Mc-1r receptor portion of that gene causes it to produce adenine rather than guanine.
When both parents contribute this recessive gene, the result is white fur. Click here to download this video Outside British Columbia only about one in a million black bears is white. One of these white bears, a subadult male, lived near Orr, Minnesota, in Hair samples showed him to be genetically different from white Kermode bears.
Named Halo, he caused such a media stir that the Minnesota legislature gave protection to all white bears in the state, but Halo remains the only white bear ever reported in Minnesota. However, the next sighting of a white black bear was only miles northwest of Orr.
Ina black mother with two white cubs turned up near Beausejour, Manitoba. The genetics of this family were not studied. Ina black mother with a white cub was discovered about miles northwest of Beausejour near Cedar Lake, Manitoba.
Named Maskwa, this white cub carried a new mutation on the same gene that determines coat color in Kermode bears. These four white black bears are the only ones reported outside British Columbia in recent decades.For bears, height is usually measured at the shoulder when the animal is on all fours, according to Polar Bear International.
On average, polar bears on all .
Quite obviously, Polar bears got their name because of the fact that they live on the north pole, and are from the bear family. They are a type of bear (the largest, in fact) found in . Grizzly bears are majestic symbols of the wild. Bears live in and use a variety of habitat types, playing important roles in each one.
This makes them an “umbrella species,” meaning that when we protect them and their habitat we also protect many species. The Kodiak bear (Ursus arctos middendorffi), also known as the Kodiak brown bear, sometimes the Alaskan brown bear, inhabits the islands of the Kodiak Archipelago in southwest Alaska.
It is the largest recognized subspecies of brown bear, and one of the two largest bears alive today, the . Polar bears roam the Arctic ice sheets and swim in that region's coastal waters.
They are very strong swimmers, and their large front paws, which they use to paddle, are slightly webbed. Some. Home Essays Polar Beaqrs Polar Beaqrs Topics: Polar bear, Bear, Climate Pages: 9 ( words) Published: May 2,