Affiliation: | (1) Present address: Abt. Verhaltensphysiologie, Beim Kupferhammer 8, 7400 Tübingen, Germany;(2) Duke University, USA;(3) Present address: Ministère des Eaux et Forêts, Andasibe, Madagascar;(4) Present address: Laboratoire de Zoologie, Universitè de Madagacar, Tananarive, Madagascar |