Tag Archives | behavior

geophagy

Men enjoy dirt-eating as much as pregnant women, Harvard study finds




Harvard scientists say that pica (the eating of non-food items) is far more prevalent in Madagascar than previously thought and men are partaking as often as pregnant women. In the new study, Harvard’s Christopher Golden and colleagues from Madagascar Health and Environmental Research surveyed 760 people in the northeastern corner of the island nation and […]




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personality

Gender behaviors directly manipulated




Uncovering the individual genes that are directly influenced by testosterone and estrogen has allowed University of California, San Francisco scientists to manipulate individual behaviors in mice, such as sex drive, desire to pick fights, or willingness to spend extra time caring for their young. Explaining his work in the journal Cell, researcher Nirao Shah said […]




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fish_nemo

Rising CO2 levels creating crazy fish




Rising oceanic carbon dioxide (CO2) levels are disrupting a key brain receptor in fish, causing dramatic changes in their brain chemistry, behavior and sensory abilities, say Australian researchers from the ARC Centre of Excellence for Coral Reef Studies. Their work appears in the journal Nature Climate Change. Around 2.3 billion tons of human CO2emissions dissolve […]




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ant_carpenter

The strange case of the zombie ants




A study in the latest issue of The American Naturalist describes a fungal parasite that coerces ants into dying in just the right spot – one that is ideal for the fungus to grow and reproduce. Scientists have known for over a century about this parasite’s ability to turn unsuspecting ants into zombies. But Harvard […]




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ecoli

Bacteria found to exhibit anticipatory behavior




Bacteria can anticipate future events and prepare for them, according to new research that explores how a microorganism’s genetic networks are hard-wired to “foresee” what comes next in a sequence of events. Reporting their findings in Nature, the Weizmann Institute of Science researchers explained how E. coli bacteria, which normally cruise harmlessly down the digestive […]




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rorschach

Psychiatric disorders common among young adults




In a study of 18-24 year-olds conducted over a 12 month period, an astonishing 47 percent of the individuals assessed met the criteria for substance abuse, personality disorders or another mental health condition, yet only one-quarter of those affected sought treatment. Reporting their findings in the Archives of General Psychiatry, the researchers noted that while […]




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greenslime

Microbe Colonies Show Sophisticated Learning Behaviors




Microbes may be smarter than we think, at least that’s according to Princeton University researchers who have shown for the first time that bacteria don’t just react to changes in their surroundings – they anticipate and prepare for them. The findings, reported in Science, challenge the prevailing notion that only organisms with complex nervous systems […]




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leaf

Evidence Of Altruism In Plants




Gardeners believe that some pairs of plants get along better than others, and it now seems there may be scientific evidence to back up the notion. Researchers from McMaster University in Canada have found that plants get fiercely competitive when forced to share their pot with strangers of the same species, but they’re accommodating when […]




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