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Age Becomes Her: Male chimpanzees favor old females as mates
11-25-2006 · Science News OnlineMale chimpanzees in Uganda prefer to mate with older females, a possible sign of males' need to identify successful mothers in a promiscuous mating system.
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Keywords: age, becomes, male, chimpanzees, favor, old, females, mates, become, chimpanzee, female, mate
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- Male chimpanzees prefer mating with old females
11-20-2006 · EurekAlert!
Researchers studying chimpanzee mating preferences have found that although male chimpanzees prefer some females over others, they prefer older, not younger, females as mates. The findings uncover a stark contrast between chimpanzee behavior and that of humans, their primate cousins.
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- Scientists report new take on sexual signaling
05-08-2007 · EurekAlert!
In dangerous environments, females looking for a mate run great risks. Scientists from Seoul National University, in Korea, and the Smithsonian Tropical Research Institute in Panama present a new take on sexual signaling in the May issue of the Public Library of Science. The researchers report that females prefer a male sexual signal that helps them avoid their predators as they sequentially visit and assess potential mates.
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- Study shows wild male chimpanzees use stolen food to win over the opposite sex
09-11-2007 · EurekAlert!
They say that the way to a man's heart is through his stomach and the same could be said for female chimpanzees. Researchers studying wild chimps in West Africa have discovered that males pinch desirable fruits from local farms and orchards as a means of attracting female mates. The study is published in the Sept. 12 issue of the online, open-access journal PLoS ONE.
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- Opposites do not attract
11-13-2006 · EurekAlert!
A study conducted at the University of California, Irvine, found that a female budgerigar prefers to mate with a male that sounds like her. Biologists Marin Moravec, Professor Nancy Burley and Professor Georg Striedter conducted the study, which was published in Ethology in early November. The study also found that males that paired with more similar-sounding females gave more help to the females when they were nesting.
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- For Pacific white shrimp, gender matters when competing for food
12-12-2006 · EurekAlert!
A new study in Journal of the World Aquaculture Society suggests that, while larger shrimp consistently win over smaller shrimp of the same gender when competing for food, male shrimp will almost always beat female shrimp -- even though adult males of the species are typically much smaller than the adult females of the same age.
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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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- Primate sperm competition: speed matters
09-24-2007 · EurekAlert!
Sperm cells from the more promiscuous chimpanzee and rhesus macaque species swim much faster and with much greater force than those of humans and gorillas, species where individual females mate primarily with only one male during a reproductive cycle.
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- Jefferson researchers develop combined procedure for uterine preservation in treating fibroids
12-05-2006 · EurekAlert!
Although fibroids can cause pelvic pain, abnormal vaginal bleeding and infertility, women of childbearing age often choose to forego treatment because the options don't guarantee fertility.In the December issue of The Female Patient, physicians at Thomas Jefferson University Hospital in Philadelphia present a case history of a 35-year-old woman whose numerous fibroids formed a large mass in her pelvic area that, when initially diagnosed, was of a size comparable to a full-term pregnancy.
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- Seven-year-old becomes 'scientist for a day'
11-16-2007 · Massachusetts Institute of Technology (MIT)
Just like most MIT students, Juliana Bach, a 7-year-old from Miami, discovered her passion for science at a young age. On Nov. 13, MIT, in conjunction with the Make-A-Wish Foundation, made her wish to be a scientist come true.
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- UC Davis scientists' groundbreaking research: Mate-attracting chemicals
10-27-2006 · EurekAlert!
It's all about "the birds and the bees." And now, "the silkworm moths and the fruit flies."A chemical ecologist and a genetics researcher at the University of California, Davis, have joined forces to trick fruit flies into thinking that silkworm moths are potential mates.Groundbreaking research in the labs of chemical ecologist Walter Leal and genetics researcher Deborah Kimbrell shows that genetically engineered fruit flies responded to the silkworm moth scent of a female.
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