Archive for the ‘Regulation and behavior’ Category

Imitation: Better than flattery? - Thursday, August 13th, 2009

Imitation is a social glue in human society. We like people who imitate us. We call them friend. We will even tip them better! A new study finds similar responses in monkeys…

Animal arms race - Thursday, July 16th, 2009

The struggle between predator and prey never ends. Bats invented sonar, and now some moths are fighting back. Check out the Why Files acoustic-organic warfare, airborne edition.

How a fly detects a poison - Thursday, July 2nd, 2009

Animals spend a lot of energy avoiding toxic chemicals in their food. A new type of gene that does this in fruit flies reinforces the importance of reproduction in shaping evolution.

Micro eye movements - Thursday, February 12th, 2009

You can’t hold your eyes completely still, but what is the purpose of those tiny movements? A new study links them to the brain region that controls quick movements of the eye.

Life of the locust: Biblical plague explained - Tuesday, February 3rd, 2009

Locusts live a solitary life — until their bodies suddenly change, and they swarm into clouds of destructive insects. A new study fingers the trigger for this transformation.

Assembly-lines don’t work for ants! - Thursday, November 27th, 2008

Specialization may work in factories, but it does not make ant colonies more efficient. As the conventional wisdom about social insects goes topsy-turvy, what’s an ecologist to think?

Song of the crocodile - Thursday, June 26th, 2008

How does momma croc know when to dig up the young? How do the embryos know when to start hatching? The secret’s in the song…

Alcohol: Molecule curbs drinking among rats; are humans next? - Thursday, June 12th, 2008

Injecting a protein in the brain stifles the drive to drink among lab rats; one dose lasts three hours or more. Does GDNF offer a new angle on alcoholism?

Learning to read mouse pee - Thursday, May 1st, 2008

Mice can tell the sex, mating status and identity of another mouse — all from sniffing urine. A new study of how mice read pheromones also gives insight into the human sensory apparatus…

Aggression -Another feelgood emotion? - Thursday, January 24th, 2008

In the brain, dopamine carries signals that make us eat, take drugs and have sex. New research shows that dopamine plays a key role in rewarding mice for aggression.

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