La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The use of a nutritional supplement to improve egg production in the endangered kakapo
Auteurs :	David Houston, Auteur ; Kate Mcinnes, Auteur ; Graeme Elliott, Auteur ; Daryl Eason, Auteur ; Ron Moorhouse, Auteur ; John Cockrem, Auteur
Type de document :	Article
Dans :	Biological Conservation (138(1-2) AUG 2007)
Article en page(s) :	248-255
Langues:	Anglais
Résumé :	The critically endangered kakapo (Strigops habroptilus) is intensively managed on offshore islands off New Zealand. The birds rear their young on the fruits of native trees. These trees produce abundant fruit only every 2-6 years, and kakapo only breed in those years. At other times their natural diet is poor in nutrients. This study investigated the effect on breeding of improving kakapo nutrition by the provision of two dietary supplements: a nut supplement and a specially formulated pellet. Although dietary supplements had no effect on nesting frequency, females that took the specially formulated food pellets laid significantly larger clutches than those that did not. The supplementary diet of nuts did not increase egg production, which suggests that egg production in kakapo is limited by the nutritional quality of their natural diet rather than the energy content. (c) 2007 Elsevier Ltd. All rights reserved.

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