Navigation Links
Wild chimpanzees appear not to regularly experience menopause
Date:12/13/2007

ce in chimpanzees, unlike in humans, is consistent with the somatic aging process."

In other words, human evolution has resulted in an extended life span without complementary extended reproduction.

"Why hasn't reproduction kept pace with the general increase in human longevity" It may be because there hasn't been anything for natural selection to act on, though there is heritable variation in age of menopause," Emery Thompson says. "However, it may be that the advantage older females gain by assisting their grandchildren outstrips any advantage they might get by reproducing themselves."

The oldest known wild chimpanzee, who died earlier this year at approximately age 63, gave birth to her last offspring just eight years ago, at about 55. Female chimpanzees only give birth every 6 to 8 years, on average, and they generally begin reproducing at age 13 to 15. This makes the chimpanzee reproductive profile much longer and flatter than that of humans, whose procreation is concentrated from age 25 to 35.

Emery Thompson and her colleagues gathered data from six wild chimpanzee populations in Tanzania, Uganda, Guinea, and Gambia. They compared these chimpanzees' fertility patterns to those seen among two well-studied human foraging populations, in Botswana and Paraguay.


'/>"/>

Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Fair play in chimpanzees
2. Risk of common vaginal infection linked to preterm birth appears higher for blacks
3. Scientists identify embryonic stem cells by appearance alone
4. Laser can spot illness before symptoms appear
5. Humans appear hardwired to learn by over-imitation
6. Family conditions may affect when girls experience puberty
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/27/2014)... might have survived the asteroid strike that wiped them ... later in history, scientists say. , A fresh study ... helped palaeontologists to build a new narrative of the ... They found that in the few million years before ... was experiencing environmental upheaval. This included extensive volcanic activity, ...
(Date:7/27/2014)... have shown the potential for global climate change to ... most part, ignored the interactions between increasing temperature and ... to damage crops. , A new study involving researchers ... significant, suggesting that policymakers need to take both warming ... , The study looked in detail at global production ...
(Date:7/25/2014)... the first broad-scale estimate of air pollution removal by ... that trees are saving more than 850 human lives ... symptoms. , While trees, pollution removal equated to an ... the impacts of that improvement are substantial. Researchers valued ... at nearly $7 billion every year in a study ...
Breaking Biology News(10 mins):Dinosaurs fell victim to perfect storm of events, study shows 2Study: Climate change and air pollution will combine to curb food supplies 2Study: Climate change and air pollution will combine to curb food supplies 3First national study finds trees saving lives, reducing respiratory problems 2
... of coastal restoration, The Nature Conservancy and a team of ... institutions led by the University of Cambridge conducted an in-depth ... the actual biomass (the "living weight") of oyster reefs in ... ,Historical ecology with real numbers, published today in Proceedings ...
... science rushes to develop safe weight loss drugs, a new ... What if there were a pill that would make you ... new research report appearing online in The FASEB Journal ... team of Swiss researchers found that when a hormone in ...
... Yuh Nung Jan, PhD, of the Howard Hughes Medical ... jointly receive the 2012 Neuroscience Prize of The Gruber ... to the field of molecular neurobiology, particularly their pioneering ... and on how brain cells diversify and specialize during ...
Cached Biology News:New report puts real numbers behind history of oyster reefs 2Don't feel like exercise? Scientists find compound that may help you work out harder 2UCSF pair win Gruber Foundation Neuroscience prize 2UCSF pair win Gruber Foundation Neuroscience prize 3UCSF pair win Gruber Foundation Neuroscience prize 4
(Date:7/28/2014)... new method of building materials using light, developed by ... enable technologies that are often considered the realm of ... , Although cloaked starships won,t be a reality ... developed for constructing materials with building blocks a few ... control the way that light flies through them, and ...
(Date:7/28/2014)... July 28, 2014 “2014 ... Lubricant Industry” is a professional and in-depth ... market. The report introduces Lubricant basic information, ... chain structure and industry overview. This research ... domestic market as well as global industry ...
(Date:7/28/2014)... -- Research and Markets has announced the ... report to their offering. ... covers the designing and engineering of completely new biological ... of natural biological systems that provide improved and desirable ... extreme genetic engineering because it not only alters existing ...
(Date:7/28/2014)...  David Hardison, Ph.D., vice president of health ... been elected chairman of the board for the ... to establish common protocols around the use of ... electronic health records. Hardison will ... organizations across the research and health care arena ...
Breaking Biology Technology:Building 'invisible' materials with light 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 3Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 4Global Synthetic Biology Market 2014-2018 2ConvergeHEALTH by Deloitte's David Hardison Named Chairman of the Clinical Data Interchange Standards Consortium 2ConvergeHEALTH by Deloitte's David Hardison Named Chairman of the Clinical Data Interchange Standards Consortium 3
... Drive Value from Appraisals, OTTAWA, March 17 ... web-based employee performance and talent management software,today announced ... provide a system,for its employees at the company,s ... 5000 franchise restaurants, designed for today,s,busy consumers who ...
... Support of National Electronic Disease ... Surveillance System, ... ) announced today that it has been awarded a,task order from ... supporting the National Electronic Disease,Surveillance System (NEDSS) Base System (NBS). The ...
... risk ... for colorectal cancer-, TORONTO, ... on developing molecular diagnostic tests derived from a,simple blood sample ... announced that its abstract describing the,performance of the Company,s six-gene ...
Cached Biology Technology:Quiznos Selects Halogen for Fresh Approach to Talent Management 2CSC Continues Support of Centers for Disease Control and Prevention Through New Task Order 2GeneNews selected to present late-breaking abstract at AACR Annual Meeting 2