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Judi Lynn

(162,406 posts)
Thu Oct 20, 2022, 08:01 PM Oct 2022

Neanderthal family life revealed by ancient DNA from Siberian cave

DNA from 11 individuals who lived in Chagyrskaya cave around 51,000 years ago suggests women moved between groups and also shows a high level of inbreeding

HUMANS 19 October 2022
By Michael Le Page



Chagyrskaya cave in Siberia

Skov et al.

Ancient DNA from a group of Neanderthals who lived together has given us an unprecedented glimpse of the social structure of these extinct human relatives. Among other things, it suggests that their women moved between groups while the men stayed put.

Researchers have previously tried to work out what the social structure of Neanderthal groups was like from evidence such as the layout of caves and footprints, says team member Benjamin Peter at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, but the DNA provides direct evidence. “It’s the first time we’ve been able to do something like this using genetics,” says Peter.

He and his colleagues managed to extract DNA from 15 out of 17 pieces of bone or teeth recovered from the Chagyrskaya cave in the Altai mountains in Siberia, Russia. The DNA showed that some pieces came from the same individuals, so the findings represent 11 individuals in total, including several teenagers and children.

Dating of sediments and bison bones at the site suggests the Neanderthals lived in the cave between 51,000 and 59,000 years ago, while the DNA shows that many of the individuals were related. “We can say that they very likely lived at the same time,” says Peter.

More:
https://www.newscientist.com/article/2342731-neanderthal-family-life-revealed-by-ancient-dna-from-siberian-cave/

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Judi Lynn

(162,406 posts)
2. Evrim Yazginshows that our closest human cousins probably lived in small groups
Thu Oct 20, 2022, 08:17 PM
Oct 2022

20 October 2022

New findings shed light on the social organisation of Neanderthals.

New research is bringing to life for the first time a description of the social organisation and small community dynamics of Neanderthals.

Neanderthals were our closest human cousins, but up until now we’ve not known much about how they lived and their social relations.

The research published in Nature and led by the Max Planck Institute for Evolutionary Anthropology in Germany, is based on DNA analysis of 13 Neanderthal individuals from two caves in Russia.

Neanderthals lived in western Eurasia from around 430,000 years ago before going extinct around 40,000 years ago, not long after Homo sapiens (modern humans) arrived in Europe from Africa. There is still debate about what exactly caused the extinction of Neanderthals, but new theories appear to counter the old idea that direct confrontation between Neanderthals and our modern human ancestors led to their demise.

More:
https://cosmosmagazine.com/history/neanderthal-genetics-small-groups/

wnylib

(24,454 posts)
7. Maybe direct confrontation did cause
Mon Oct 24, 2022, 06:53 AM
Oct 2022

Neanderthals to go extinct, but not violent confrontation. A better word might be direct contact instead of confrontation. Intermating could have cause the Neanderthal traits to become so diluted that they disappeared as a separate species and simply merged with Homo sapiens. That would be likely if Neanderthals were greatly outnumbered by Homo sapiens.

On one hand, after being around for a few hundred thousand years, it seems like the Neanderthal population would have been larger than Homo sapiens who were newcomers. But, on the other hand, Neanderthal populations might have remained small in Europe and Asia due to the cold climate providing fewer resources to support a larger population. Then, the arrival of Homo sapiens might have made resources scarcer with more people using them. Scarcer resources and genetic merging might have caused Neaderthals to disappear.

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Judi Lynn

(162,406 posts)
3. Neanderthal men stayed near home, while women migrated to mate, DNA evidence suggests
Thu Oct 20, 2022, 08:19 PM
Oct 2022

'It brings them alive in some ways and allows me to think about them in a much more complex way'

Author of the article:Joseph Brean
Publishing date:Oct 19, 2022 • 1 day ago • 3 minute read



Chagyrskaya Cave, in the Altai Mountains of Siberia, was once a Neanderthal hunting camp. DNA evidence from a dozen individuals, including a father and his daughter, has illuminated their social behaviours. PHOTO BY BENCE VIOLA


Inspecting the tooth unearthed at a cave in the Altai mountains of Siberia, Bence Viola, a paleoanthropologist at the University of Toronto, considered what conclusions he could draw.

It was a “milk tooth,” he said in an interview, a barely worn girl’s premolar that would have fallen out naturally, so this person did not necessarily die here, not like the man whose vertebra and ulna were also found nearby in the same cave.

In all he and colleagues found DNA evidence, in bone fragments and teeth, from more than a dozen individuals.

Research published Wednesday shows that the girl with the tooth and the man with the spine were so closely related they were either parent and child or siblings, but also they had different mitochondrial DNA, which comes from the mother, so they were likely father and daughter.

More:
https://theprovince.com/news/neanderthal-life

hedda_foil

(16,507 posts)
6. The writer doesn't seem to have much of a grasp of kinship groups in human societies.
Fri Oct 21, 2022, 12:41 AM
Oct 2022

In most cultures around the world, girls went to live with their husband's family, so everyone but the young women in a small kinship group would be re!ated on the paternal side. This isn't particularly a Neanderthal pattern. It's been traditional around the world for both types of humans.

3Hotdogs

(13,421 posts)
5. Is that a reference to the women moving from cave to cave for booty calls?
Thu Oct 20, 2022, 10:24 PM
Oct 2022

MTG and the gym instructor and whoever the other guy was or the ones we don't know about?

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