Sleep behaviour: Sleep in continuously active dolphins

  title={Sleep behaviour: Sleep in continuously active dolphins},
  author={Yuske Sekiguchi and Kazutoshi Arai and Shiro Kohshima},
Arising from: O. Lyamin, J. Pryaslova, V. Lance & J. Siegel 435, 1177 (2005); see also communication from Gnone et al.; Lyamin et al. reply.Sleep has been assumed to be necessary for development and to be a vital function in mammals and other animals. However, Lyamin et al. claim that in bottlenose dolphins (Tursiops truncatus) and killer whales (Orcinus orca), neonates and their mothers show almost no sleep behaviour for the first month after birth; this conclusion is based on their… 

Sleep behaviour: Sleep in continuously active dolphins; Activity and sleep in dolphins (Reply)

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