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Brainy courage of the rainbowfish
Date:4/10/2014

lessened in comparison to strongly lateralized fish. The researchers think this may result in a reduced level of fear generally, or perhaps the decision to explore is already made before the moderating effect of fear comes into play. Either scenario would adequately explain their observation that non-lateralized fish are bolder than lateralized fish.

The researchers were not surprised that wild fish were significantly bolder than captive-reared fish, as previous work they had done showed that populations that are hunted by predators were braver than those from low-predation areas.

"The similarities between personality and laterality are certainly intriguing and hint at a single underlying function or mechanism," says Brown. "We suggest that these aspects of personality traits are actually caused by variation in laterality."


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Contact: Renate Bayaz
renate.bayaz@springer.com
49-622-148-78531
Springer
Source:Eurekalert

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