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First steps towards the conservation of the microendemic Patagonian frog Atelognathus nitoi

Published online by Cambridge University Press:  24 April 2009

Horacio Zagarese
Affiliation:
Centro Regional Bariloche, Universidad Nacional del Comahue, Unidad Postal Universidad, 8400—San Carlos de Bariloche, Argentina. E-mail: cubeda@bariloche.com.ar
Mónica Diaz
Affiliation:
Centro Regional Bariloche, Universidad Nacional del Comahue, Unidad Postal Universidad, 8400—San Carlos de Bariloche, Argentina. E-mail: cubeda@bariloche.com.ar
Fernando Pedrozo
Affiliation:
Centro Regional Bariloche, Universidad Nacional del Comahue, Unidad Postal Universidad, 8400—San Carlos de Bariloche, Argentina. E-mail: cubeda@bariloche.com.ar
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Abstract

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Atelognathus nitoi is a microendemic leptodactylid frog restricted to the area surrounding the pond Laguna Verde in the Nahuel Huapi National Reserve, north-west Patagonia, Argentina. Its habitat is potentially threatened by a number of anthropogenic and natural factors. The aim of this study was to obtain basic knowledge of the biology and habitat of the species, which would be useful for selecting management measures to ensure its conservation. The area was surveyed during all four seasons in 1996 and 1997 and Laguna Verde was sampled intensively in winter and in summer. Atelognathus nitoi is distributed patchily. The preferred microhabitats of adults and juveniles are the most humid areas of the forest. Reproduction and larval development occurs only in lentic environments. Laguna Verde is the only known permanent waterbody suitable for reproduction every year. During rainy years reproduction can also take place in temporary ponds. Action towards the conservation of A. nitoi should be aimed at preserving both the terrestrial and aquatic habitats. Laguna Verde appears to be a key site for the A. nitoi source population and plays an essential part in the conservation of this species. In terrestrial habitats it is vital to preserve the heterogeneity of the lower strata in the forest. The knowledge gained through this study has allowed the authors to suggest protective measures to mitigate or eliminate the impact of certain stressors on the ecology of the species.

Type
Research Article
Copyright
Copyright © Fauna and Flora International 1999

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