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Promiscuous Queen Bees Maintain Genetic Diversity

By Guest PostApril 18, 2012NatureChina, coast, csds, diploid male, entomologist, female workforce, fertile male, flavor, gene, genetic diversity, hainan island, infertile male, island queen, isolated island, malaysia, Philippines, plos one, promiscuous, queen bees, sex, voila moment, zachary huang

EAST LANSING, Mich. — By mating with nearly 100 males, queen bees on isolated islands avoid inbreeding and keep colonies healthy.

The results, published in the current issue of PLoS ONE, focused on giant honey bee colonies on Hainan Island, off the coast of China. Since these bees have long been separated from their continental cousins, it was thought that the island bees would be prime candidates for inbreeding as well as having very different genes, said Zachary Huang, Michigan State University entomologist. (more…)

Torosaurus is Not Triceratops, Yale Researchers Say

By Guest PostMarch 1, 2012Scienceceratopsidae, daniel j field, dinosaur research institute, diversity, eric gershon, horned dinosaur, jurassic foundation, juvenile, nicholas r longrich, North America, paleontologist, plos one, skulls, stage of life, torosaurus, triceratops, yale university

A year-long study by Yale University paleontologists concludes that two related horned dinosaurs are different animals and not adult and juvenile versions of the same.

“We’re saying, ‘No, they’re different,’” said Nicholas R. Longrich, a postdoctoral fellow in Yale’s Department of Geology and Geophysics and the lead author of the study. “They’re separate animals.” (more…)

Brain Rhythm Associated With Learning Also linked to Running Speed, UCLA Study Shows

By Guest PostJune 27, 2011Health, Sciencealzheimer's disease, brain as a large orchestra, brain oscillations, brain rhythm, concentration and learning, critical for learning and memory, from outer to inner space, gamma rhythm, hippocampus, keck center, language of the brain, mayank mehta, microelectrodes, microwires 20 times thinner than a human hair, neurophysics, physics and astronomy, plos one, post-traumatic stress, rhythms, running speed, syllables, ucla neurophysicists, university of california, zhiping chen

Rhythms in the brain that are associated with learning become stronger as the body moves faster, UCLA neurophysicists report in a new study.

The research team, led by professor Mayank Mehta, used specialized microelectrodes to monitor an electrical signal known as the gamma rhythm in the brains of mice. This signal is typically produced in a brain region called the hippocampus, which is critical for learning and memory, during periods of concentration and learning. (more…)

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Promiscuous Queen Bees Maintain Genetic Diversity

Torosaurus is Not Triceratops, Yale Researchers Say

Brain Rhythm Associated With Learning Also linked to Running Speed, UCLA Study Shows