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DNA analysis reveals rapid population shift among Pleistocene cave bears
February 20, 2007
Studying DNA obtained from teeth of ancient cave bears, researchers have been able to identify a shift in a particular population of the bears inhabiting a European valley in the late Pleistocene era. The findings illustrate the ability of DNA sequence analysis to reveal aspects of animal population dynamics in the distant past and potentially illuminate the influence of human migrations in animal population changes. The new work, reported by a collaborative group of researchers including Michael Hofreiter of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, appears in the February 20th issue of the journal Current Biology, published by Cell Press. To investigate the stability of ancient cave bear populations over time, the researchers obtained DNA samples from 29 cave bear teeth from three geographically close caves in the Ach Valley, near the Danube River in modern-day southern Germany. Twenty of the teeth ultimately provided useful mitochondrial DNA sequence (mitochondrial DNA is especially useful for tracking population changes). The findings indicated that while four sequence types (known as haplotypes) corresponded to bears 28,000 to 38,000 years old, a fifth DNA haplotype was found only in bears that were 28,000 years old or younger. These data suggested that what had been a stable, long-established cave bear population became disrupted around 28,000 years ago and was replaced by a new, genetically distinct cave bear group.
The timing of the disruption appears to roughly coincide with the arrival of modern humans in the Ach Valley, thought to have occurred by 32,000 years ago. The researchers suggest that human influence in the form of hunting and competition for sheltering caves may represent a plausible explanation for the disruption in the cave bear population, creating an opportunity for the infiltration by a neighboring cave bear group. The authors note that though the new bears successfully colonized the Ach Valley for a time, they endured only another 2,000 years before becoming extinct in the region.
Cell Press
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CAVE BEAR by Schleich
by Schleich
Great for Kids. This item is not only a toy, but an educational series of hand painted replicas that reveals the prehistoric world. Each model comes equipped with a booklet containing its scientific data. Manufactured from a high quality vinyl (rubber), this extremely realistic piece is hand-painted, with non-toxic paint, for a natural life-like finish.
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The Clan of the Cave Bear
by Jean M. Auel (Author)
This novel of awesome beauty and power is a moving saga about people, relationships, and the boundaries of love. Through Jean M. Auel’s magnificent storytelling we are taken back to the dawn of modern humans, and with a girl named Ayla we are swept up in the harsh and beautiful Ice Age world they shared with the ones who called themselves the Clan of the Cave Bear. A natural disaster leaves the young girl wandering alone in an unfamiliar and dangerous land until she is found by a woman of the Clan, people very different from her own kind. To them, blond, blue-eyed Ayla looks peculiar and ugly--she is one of the Others, those who have moved into their ancient homeland; but Iza cannot leave the girl to die and takes her with them. Iza and Creb, the old Mog-ur, grow to love her, and as...
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Clan of the Cave Bear
Starring: Daryl Hannah, Pamela Reed, James Remar, Thomas G. Waites, John Doolittle Directed By: Michael Chapman Also With: Gerald I. Isenberg (Producer), John W. Hyde (Producer), Jon Peters (Producer), Mark Damon (Producer), Peter Guber (Producer), Jean M. Auel (Writer), John Sayles (Writer)
Ayla, a young Cro-Magnon girl, is rescued and raised by a Neanderthal clan, but is the constant object of scorn and derision because of her beauty and greater intelligence. Item Type: DVD Movie Item Rating: NR Street Date: 11/23/99 Wide Screen: yes Director Cut: no Special Edition: no Language: ENGLISH Foreign Film: noSubtitles: no Dubbed: no Full Frame: no Re-Release: no Packaging: Sleeve
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The Clan of the Cave Bear
Starring: Daryl Hannah, Pamela Reed, James Remar, Thomas G. Waites, John Doolittle Directed By: Michael Chapman Also With: Richard Briggs (Producer), Mark Damon (Producer), Peter Guber (Producer), John W. Hyde (Producer), Gerald I. Isenberg (Producer), Sidney Kimmel (Producer), Jon Peters (Producer), Stan Rogow (Producer)
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![The Clan of the Cave Bear [VHS]](http://ecx.images-amazon.com/images/I/513FJYPT27L._SL160_.jpg)
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The Clan of the Cave Bear [VHS]
Starring: Daryl Hannah, Pamela Reed, James Remar, Thomas G. Waites, John Doolittle Directed By: Michael Chapman Also With: Gerald I. Isenberg (Producer), John W. Hyde (Producer), Jon Peters (Producer), Mark Damon (Producer), Peter Guber (Producer), Jean M. Auel (Writer), John Sayles (Writer)
Every statuesque, beautiful blonde woman has spent more time in the company of Neanderthals than she cares to remember. Seems it's always been that way: Clan of the Cave Bear, a 1986 feature scripted by John Sayles and based on Jean Auel's bestselling novel set in prehistoric times, stars former mermaid Daryl Hannah as an intelligent Cro-Magnon woman adopted and raised by lesser-evolved Neanderthals. Berated for her brains, sexually exploited, and generally treated as uppity chattel, Hannah's character sets out for the far country to see who else is there. Eventually, she finds more Baywatch-like gods and goddesses similar to herself, including an Aryan-looking stud with whom she discovers how good sex can feel with a warm, caring, proto-human. Sayles's writing on this project...
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Haba Bear's Cave Toy
by HABA
Look, the bear comes out to play! With rustling foil and little bell. With zipper and little loop for fixing anywhere.
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The Clan of the Cave Bear - Movie Poster - 27 x 40
by Pop Culture Graphics
MovieGoods has Amazon's largest selection of movie and TV show memorabilia, including posters, film cells and more: tens of thousands of items to choose from. We also offer a full selection of framed posters. Customer satisfaction is always guaranteed when you buy from MovieGoods on Amazon at www.amazon.com/moviegoods
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Schrade Old Timer Cave Bear Knife 5" Lockback
by Schrade
Old Timer Cave Bear single blade lock-back folding pocket knife. 5" closed length. Limited Lifetime Warranty
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The Clan Of The Cave Bear: Original Motion Picture Soundtrack
Alan Silvestri (Composer)
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Lil Luvables Fluffy Factory Bear Wear Fairy Angel Outfit
by Spin Master
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