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Published on: 3/17/2007
Last Visited: 3/17/2007
Sociobiologists wouldn't be surprised at the study, says Douglas Raybeck, professor of anthropology at Hamilton College in Clinton, N.Y.It supports a leading theory in the field that applies to guppies and humans, and most everything in between.
"They believe that for reproductive success for females, you want a male who can provide for the family and protect," Raybeck says."Aging males don't have the same energy and resources that a 20-year-old would have."
On the other hand, Raybeck says, some researchers offer a different theory, which would seem to favor older males."One of the things females want in a male is someone who's not that threatening -- someone who's going to be around, as opposed to somebody who drops by, leaves sperm and leaves."
Raybeck's own research supports the latter theory.He says it may also point to a difference between guppies and humans, who, as primates, have babies who take longer to mature and thus need extended care.
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And you can read about Raybeck's research in a recent HealthScout story, Has Cupid Forgotten You?.
SOURCES: Interviews with Christopher W. Beck, Ph.D., lecturer at Emory University, Atlanta, Ga; Douglas Raybeck, Ph.D., professor of anthropology, Hamilton College, Clinton, N.Y.; 2000: 2 Evolutionary Ecology Research