Navigation Links
Chimpanzee ground nests offer new insight into our ancestors descent from the trees
Date:4/16/2012

The first study into rarely documented ground-nest building by wild chimpanzees offers new clues about the ancient transition of early hominins from sleeping in trees to sleeping on the ground. While most apes build nests in trees, this study, published in the American Journal of Physical Anthropology, focused on a group of wild West African chimpanzees that often shows ground-nesting behaviour.

An international team of primatologists from the University of Cambridge and Kyoto University, led by Dr Kathelijne Koops, studied the chimpanzee (Pan troglodytes verus) population in the Nimba Mountains in Guinea, West Africa. All species of great ape build nests to sleep in each night. Construction of these shelters takes minutes as the apes bend, break and interweave branches into a circular frame, followed by tucking in smaller branches to form a sturdy but comfortable sleeping platform.

"We believe that, like modern apes, the common ancestor of chimpanzees and humans also slept in the trees 6 million years ago," said Dr Koops. "However, these nests are not preserved in the fossil or archaeological record, so it is impossible to study directly the ancient transition from sleeping in trees to building shelters on the ground. Recording this rare behaviour in the chimpanzee, our closest relative, may provide vital clues."

As the Nimba chimpanzees do not yet tolerate human presence at close range, the team used new molecular genetic techniques to analyse hairs collected from the nests. This allowed the team to establish the sex of chimpanzees displaying the behaviour and to identify individuals in the group.

The team showed that as chimpanzees sleep both on the ground and in the trees, the transition from trees to the ground did not require a special evolutionary adaptation. This suggests that early hominins may have slept on the ground before the emergence of Homo erectus ('upright man'), the first species which
'/>"/>

Contact: Jennifer Beal
lifesciencenews@wiley.com
44-124-377-0633
Wiley-Blackwell
Source:Eurekalert

Page: 1 2

Related biology news :

1. In a last stronghold for endangered chimpanzees, survey finds drastic decline
2. Genetic differences between yeasts greater than those between humans and chimpanzees
3. Rwandas Forest of Hope to expand by 21 percent, begin corridor for endangered chimpanzees
4. Chimpanzees help each other on request but not voluntarily
5. Why chimpanzees attack and kill each other
6. Mans closest relationship under strain? New research reveals why chimpanzees attack humans
7. Young female chimpanzees appear to treat sticks as dolls
8. Chimpanzees contagious yawning evidence of empathy, not just sleepiness, study shows
9. Aging brains are different in humans and chimpanzees
10. Lincoln Park Zoo applauds government decision to consider reclassifying chimpanzees as endangered
11. Great news for chimpanzees
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2014)... wildlife while feeding a world population predicted to ... holistic approach to conservation that considers human-altered landscapes ... Wildlife and the natural habitat that supports it ... world where at least three-quarters of the land ... rest is vulnerable to human-caused impacts such as ...
(Date:4/18/2014)... sprout as soon as they,re planted may be good news ... careful. In the wild, a plant whose seeds sprouted at ... More than just an insurance policy against late frosts or ... long-term advantages too: Plants whose seeds put off sprouting ... finds in a team of researchers working at the National ...
(Date:4/17/2014)... COLUMBIA, Mo. April 17 In the most densely ... States, forests reflect two centuries of human needs, values ... logging and clearing forests for agriculture and development, have ... today, a U.S. Forest Service study reports. , The ... forest conditions and management needs in the Northern United ...
Breaking Biology News(10 mins):Stanford researchers rethink 'natural' habitat for wildlife 2Stanford researchers rethink 'natural' habitat for wildlife 3Stanford researchers rethink 'natural' habitat for wildlife 4Plants with dormant seeds give rise to more species 2Five anthropogenic factors that will radically alter northern forests in 50 years 2Five anthropogenic factors that will radically alter northern forests in 50 years 3
... channel has shown that a carpet of freeze-dried microbes that ... after water was diverted into it, said a University of ... resilience of life in the harsh polar environment, where temperatures ... melt water flows for only five to 12 weeks annually, ...
... showed that a fruit fly gene is crucial for ... how the transformation initially proceeds. Understanding this process in ... teenagers. , When the DHR4 gene is disabled, fruit ... to a sexually active adult. It is the first ...
... link between two biochemical pathways that plants use to ... believed worked independently of each other. , Knowing how ... researchers breed plants that can better resist a variety ... and an assistant professor of horticulture and crop science ...
Cached Biology News:Freeze-dried mats of microbes awaken in Antarctic streambed 2Freeze-dried mats of microbes awaken in Antarctic streambed 3Scientists find a maturity gene in fly 2Scientists find a maturity gene in fly 3Scientists find a maturity gene in fly 4Study: Plants use dual defense system to fight pathogens 2
(Date:1/15/2014)... 15, 2014 Two champions of science, ... sponsorship of an annual competition for middle and high ... to, innovative STEM study. The competition presents students with ... of Engineering Aptitude, Mathematics, and Sciences is a ...
(Date:1/15/2014)... 15, 2014 Freeslate, Inc ., ... announced that Lupin Limited, one of India’s top five ... Protégé PharmD System for high throughput solid form ... focused on a wide range of quality, affordable generic ...
(Date:1/14/2014)... 2014 Carahsoft and CDS Federal Services ... 2014 at 2pm EST (11am PST), “Natural Language Processing: ... on how technology can turn raw, heterogeneous data into ... agencies. The online webinar will last approximately one hour. ...
(Date:1/14/2014)... 14, 2014 EquitiesIQ, a leading informational ... ALQA). Alliqua is an emerging biomedical company acquiring, developing, ... care market. , Free report download: http://equitiesiq.com/reports/alliqua/ ... seasoned management team and Board, which launched the company’s ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... 28 US Oncology, Inc. will announce its financial results ... 7, 2009.A conference call and simultaneous webcast will be hosted ... earnings release. Additional information will be available on the company,s ... Room on the day of the earnings announcement. US/Canada Dial-in ...
... prove efficacious for both prophylactic and therapeutic ... (NYSE AMEX: CVM ) announced ... vaccines utilizing its proprietary L.E.A.P.S.(TM) (Ligand Epitope ... induce protection against illnesses such as swine ...
... ST. LOUIS, April 28 Sigma-Aldrich (Nasdaq: ... esiRNA, a pool of gene-specific siRNA that provides a novel ... traditional synthetic RNAi, esiRNA ( http://www.sigma.com/esirna ... single gene target. This new tool is designed to eliminate ...
Cached Biology Technology:US Oncology to Report 2009 First Quarter Operating Results 2CEL-SCI's L.E.A.P.S. Technology Shows Potential to Treat Swine Influenza in Preclinical Studies 2CEL-SCI's L.E.A.P.S. Technology Shows Potential to Treat Swine Influenza in Preclinical Studies 3Sigma-Aldrich Introduces MISSION(R) esiRNA for Low Cost, High Specificity Pooled RNAi Screening 2Sigma-Aldrich Introduces MISSION(R) esiRNA for Low Cost, High Specificity Pooled RNAi Screening 3Sigma-Aldrich Introduces MISSION(R) esiRNA for Low Cost, High Specificity Pooled RNAi Screening 4
... For separation and fractionation ... separation of nuclei from cytosolic ... sample complexity, greatly facilitating study ... of nucleic acid binding proteins ...
... is an isotonic, balanced salt solution. It is ... the storage of whole blood at refrigerator temperatures ... volume of blood is collected into a container ... The solution is placed in a refrigerator at ...
... Hollandes is a fixative useful for routine ... It is stable and will decalcify small ... Hollande's can be stained successfully with most ... solution stabilizes red blood cell membranes and ...
... XS uniquely combines a single-channel sample processing ... 8-channel bulk reagent dispenser all in one ... using disposable pipette tips, the Precision XS ... dispenser is available for transferring larger volumes. ...
Biology Products: