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Wild chimpanzees appear not to regularly experience menopause
12-13-2007 · EurekAlert!A pioneering study of wild chimpanzees has found that these close human relatives do not routinely experience menopause, rebutting previous studies of captive individuals which had postulated that female chimpanzees reach reproductive senescence at 35 to 40 years of age. Together with recent data from wild gorillas and orangutans, the finding suggests that human females are rare or even unique among primates in experiencing a lengthy post-reproductive lifespan.
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Keywords: wild, chimpanzees, appear, regularly, experience, menopause, chimpanzee
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- Social tolerance allows bonobos to outperform chimpanzees on a cooperative task
03-08-2007 · EurekAlert!
In experiments designed to deepen our understanding of how cooperative behavior evolves, researchers have found that bonobos, a particularly sociable relative of the chimpanzee, are more successful than chimpanzees at cooperating to retrieve food, even though chimpanzees exhibit strong cooperative hunting behavior in the wild. The work suggests that some social tendencies or emotions that are adaptive under certain circumstances -- such as aggression during competition for mates -- can hinder the potential for problem solving under other circumstances, such as sharing of a food resource.
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12-13-2007 · EurekAlert!
Researchers have found no evidence that chimpanzees in the wild undergo menopause in the way that women do, according to a new report published online on Dec. 13 in Current Biology, a Cell Press publication. That's despite the fact that reproduction tends to peter out at a similar age in both species.
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- Ebola outbreaks killing thousands of gorillas and chimpanzees
04-16-2007 · EurekAlert!
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- Female-led infanticide in wild chimpanzees
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- Children with higher intelligence appear to have reduced risk of post-traumatic stress disorder
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Children who are more intelligent at age 6 may be less likely to experience trauma by age 17 and if they do, may be less likely to develop post-traumatic stress disorder, according to a report in the November issue of Archives of General Psychiatry, one of the JAMA/Archives journals. In contrast, children who have anxiety disorders and conduct problems at age 6 appear more likely to develop PTSD following exposure to traumatic events.
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