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Cracking The Olfactory Code In Bees

Date:
March 10, 2005
Source:
Public Library Of Science
Summary:
Tastes and smells are evocative and play a crucial role in finding food for many animals. A new study of smell perception in honeybees published in the freely-available online journal PLoS Biology now explains how bees react to a suite of scents, and reveals an olfactory map that shows remarkable correspondence to brain activity.

Honey Bee (Apis mellifera).
Credit: Photo courtesy of the National Human Genome Research Institute

Tastes and smells are evocative and play a crucial role in finding food for many animals. A new study of smell perception in honeybees published in the freely-available online journal PLoS Biology now explains how bees react to a suite of scents, and reveals an olfactory map that shows remarkable correspondence to brain activity.

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The researchers, led by Martin Giurfa, first trained thousands of bees to associate a specific chemical, such as the alcohol 1-nonanol, with a sucrose reward. Then the researchers tested the bees' response to a set of different smells, varying in chemical composition. By watching how often the bees responded positively to a particular scent when they'd been trained on another, the researchers could assign perceptual "distances" between pairs of chemicals. Drawing together all these distances, they created a preliminary map of the bees' "perceptual space," similar to how surveyors measure distances between landmarks to map a landscape. From this comparison they found, for example, that the bees generalized more by functional group than by carbon-chain length.

Previously, another group had recorded bees' brain responses to the same pairs of scents, assigning distances within centers of activity for each scent. Giurfa's team compared these two sets of data and found that the perceptual and neural distances correlated well, which suggests there's a species-specific code that ties together the insects' brain and behavior. Future studies should only improve our ability to investigate the correlations between brain and behavior, the authors say. Such studies would go even further toward cracking the codes underlying animals' perception and memory.

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Citation: Guerrieri F, Schubert M, Sandoz J-C, Giurfa M (2005) Perceptual and neural olfactory similarity in honeybees. PLoS Biol 3(4): e60.


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The above story is based on materials provided by Public Library Of Science. Note: Materials may be edited for content and length.


Cite This Page:

Public Library Of Science. "Cracking The Olfactory Code In Bees." ScienceDaily. ScienceDaily, 10 March 2005. <www.sciencedaily.com/releases/2005/02/050223164123.htm>.
Public Library Of Science. (2005, March 10). Cracking The Olfactory Code In Bees. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2005/02/050223164123.htm
Public Library Of Science. "Cracking The Olfactory Code In Bees." ScienceDaily. www.sciencedaily.com/releases/2005/02/050223164123.htm (accessed October 24, 2014).

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