Yearbook 2004

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Zebra finches show remarkable differences in their individual sexual behaviour, and this variation seems to be strongly affected by non-genetic maternal effects. A research group from the Max Planck Institute for Ornithology studies whether mothers strategically program the sexual behaviour of their offspring in response to the current social environment in order to maximise offspring fitness. more
Studies of cognitive interval timing up to now focused mainly on the range from seconds to some minutes. However, individuals often face situations where they must adjust their behaviour to longer (but not circadian!) intervals. Still lacking for this time range are data and theoretical models, which could explain how animals solve such problems. A marine cleaner wrasse is now the first example, that a not warm-blooded vertebrate is able to time several different intervals simultaneously without external cues. more
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