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Post by tom on Nov 22, 2019 13:54:55 GMT -5
Here is an interesting website depicting hybrid bears. Interesting to note that many have been crossed in captivity. messybeast.com/genetics/hybrid-bears.htmAccording to the article this interesting cross actually happened. Interesting, a Brown Bear with the temperament of a Sloth Bear. Hybrid of polar bear and brown bear at the Rothschild Zoological Museum. The Green highlights where species may have actually been crossed and offspring survived.
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Hybrids
Nov 22, 2019 17:00:45 GMT -5
via mobile
tom likes this
Post by OldGreenGrolar on Nov 22, 2019 17:00:45 GMT -5
The surprising thing is that only the brown bear/polar bear hybrids are fertile. This is because the polar bear's direct ancestors are brown bears which got separated from the rest of the other brown bears and force to live a semi aquatic and carnivorous lifestyle. ABC brown bears are polar bears Tha have gradually adapted to the environment and turn back to brown bears. As Brobear said, polar bears should be called Ursus Artos Maritimus.
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Hybrids
Nov 22, 2019 20:29:31 GMT -5
Post by King Kodiak on Nov 22, 2019 20:29:31 GMT -5
Very good info Tom, thanks. To be honest i had no idea about all those hybrids. And i liked that brown bear-sloth bear hybrid born in 1916. He injereted the savage from the sloth bear obviously. He was killed in 1918, so he was just 2 years old, a cub basically.
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Hybrids
Nov 22, 2019 21:39:39 GMT -5
Post by BruteStrength on Nov 22, 2019 21:39:39 GMT -5
Wow this is something that I never knew. I never knew that all these bears could breed.
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Hybrids
Nov 22, 2019 21:48:21 GMT -5
via mobile
Post by OldGreenGrolar on Nov 22, 2019 21:48:21 GMT -5
The brown bear /sloth bear hybrid now inspires me to make a new battle Royale analysis.
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Post by tom on Nov 22, 2019 22:22:30 GMT -5
The surprising thing is that only the brown bear/polar bear hybrids are fertile. This is because the polar bear's direct ancestors are brown bears which got separated from the rest of the other brown bears and force to live a semi aquatic and carnivorous lifestyle. ABC brown bears are polar bears Tha have gradually adapted to the environment and turn back to brown bears. As Brobear said, polar bears should be called Ursus Artos Maritimus. That's a very good hypothesis Lars and quite possibly true.
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Post by brobear on Nov 23, 2019 4:32:48 GMT -5
It cannot be completely true. DNA of bears show a huge amount of cross breeding over the centuries. So much so that it is said that there are no "full-blooded" bears of any species. Example: the polar bear is mostly grizzly although quite different in its design due to environment. But the great white bear also has traces of black bear and cave bear in its DNA.
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Post by King Kodiak on Dec 4, 2019 17:34:53 GMT -5
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Hybrids
May 29, 2020 4:29:46 GMT -5
Post by brobear on May 29, 2020 4:29:46 GMT -5
en.wikipedia.org/wiki/Ursid_hybrid An ursid hybrid is an animal with parents from two different species or subspecies of the bear family (Ursidae). Species and subspecies of bear known to have produced offspring with another bear species or subspecies include black bears, grizzly bears and polar bears, all of which are members of the genus Ursus. Bears not included in Ursus, such as the giant panda, are expected to be unable to produce hybrids with other bears. Note all of the confirmed hybrids listed here have been in captivity (except grizzly × polar bear), but suspected hybrids have been found in the wild. A recent study found genetic evidence of multiple instances and species combinations where genetic material has passed the species boundary in bears (a process called introgression by geneticists). Specifically, species with evidence of past intermingling were (1) brown bear and American black bear, (2) brown bear and polar bear, (3) American black bear and Asian black bear, (4) bears currently distributed in Asia (sloth bear, Malayan sun bear and Asian black bear). Overall, this study shows that evolution in the bear family (Ursidae) has not been strictly bifurcating, but instead showed complex evolutionary relationships. All the Ursinae species (i.e., all bears except the giant panda and the spectacled bear) appear able to crossbreed.
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Hybrids
Jun 16, 2020 7:17:41 GMT -5
Post by OldGreenGrolar on Jun 16, 2020 7:17:41 GMT -5
Reply 7. It’s head looks more like that of a polar bear.
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Hybrids
Jun 16, 2020 7:32:20 GMT -5
Post by brobear on Jun 16, 2020 7:32:20 GMT -5
Reply 7. It’s head looks more like that of a polar bear. All known grolar bears are from a female polar bear and a male grizzly. Therefore they must all adapt to the polar bear's lifestyle or perish.
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Hybrids
Jun 16, 2020 7:45:29 GMT -5
Post by OldGreenGrolar on Jun 16, 2020 7:45:29 GMT -5
I guess should a male polar bear mate with a female grizzly bear, they would have to adopt the grizzly lifestyle theoretically.
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Post by brobear on Jun 16, 2020 8:03:10 GMT -5
I guess should a male polar bear mate with a female grizzly bear, they would have to adopt the grizzly lifestyle theoretically. If that were to happen; the hybrid bear cub would be raised by his/her grizzly mother.
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Post by King Kodiak on Oct 21, 2020 0:19:37 GMT -5
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Post by OldGreenGrolar on Oct 21, 2020 2:38:28 GMT -5
/\ Finally we have the interbreeding of the two largest bears on earth. Long live the hybrids.
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Hybrids
Aug 20, 2021 2:46:49 GMT -5
Post by brobear on Aug 20, 2021 2:46:49 GMT -5
Hybrid animals. When one species breeds with another successfully.
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Hybrids
Sept 13, 2021 14:52:18 GMT -5
Post by brobear on Sept 13, 2021 14:52:18 GMT -5
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Post by OldGreenGrolar on Oct 5, 2021 2:09:46 GMT -5
Ligers for some unknown reason are larger than their parents while tigon are the total opposite. I wonder how bi a liliger is.
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Post by OldGreenGrolar on Oct 5, 2021 2:37:18 GMT -5
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Post by OldGreenGrolar on Oct 5, 2021 2:38:56 GMT -5
Whale hybrids are also natural occurring hybrids in the wild.
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