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Exploration of environmental changes relates to lifestyle |
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| Authors: | Mettke-Hofmann Claudia; Wink Michael; Winkler Hans; Leisler Bernd |
| Institution: | a Max Planck Institute for Ornithology, Department of Biological Rhythms and Behaviour, Von-der-Strasse 7, 82346, Andechs and b Institute of Behaviour, Free University of Berlin, Haderslebener Strasse 9, 12163 Berlin, c Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Im Neuenheimer Feld 364, 69120 Heidelberg, d Konrad-Lorenz-Institute for Comparative Ethology, Savoyenstrasse 1a, 1160, Vienna, e Max Planck Institute for Ornithology, Department Vogelwarte Radolfzell, Scnlossallee 2, 78315, Radolfzell |
| Abstract: | Decision making in informed animals is often described by optimalitymodels. However, how information about an environment is acquiredis rarely investigated. Cost/benefit considerations suggestthat species differ in this respect according to their lifestyle.We tested the hypothesis that resident species react to changesin their familiar environment earlier and explore it more intensivelythan do nomadic species by observing the response to environmentalchanges (presentation of novel objects) in 10 parrot species.Phylogenetic relationships were taken into account. Residentstouched the novel objects significantly earlier and exploredmore objects than did nomads. In addition, species with a highproportion of fruits in their food spectrum explored more thandid species with other food preferences. The results are inaccordance with different costs and benefits of informationgathering for species that differ in their lifestyle and ecologicaldemands. |
| Keywords: | environmental assessment neophilia nomads parrots Psittacidae residents |
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