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Forests as promoters of terrestrial life-history strategies in East African amphibians.


ABSTRACT: Many amphibian lineages show terrestrialization of their reproductive strategy and breeding is partially or completely independent of water. A number of causal factors have been proposed for the evolution of terrestrialized breeding. While predation has received repeated attention as a potential factor, the influence of other factors such as habitat has never been tested using appropriate data or methods. Using a dataset that comprises 180 amphibian species from various East African habitats, we tested whether species occurring in different habitats show different patterns of terrestrialization in their breeding strategy. We recovered a significant association between terrestrialized breeding strategies and forest habitats. In general, forest seems to act as a facilitator, providing a permissive environment for the evolution of terrestrialized breeding strategies. However, while terrestrial oviposition is strongly correlated with lowland and montane forest habitat, complete terrestrial development is significantly correlated with montane forest only, indicating different selective pressures acting at different steps towards complete terrestrial development.

SUBMITTER: Muller H 

PROVIDER: S-EPMC3645021 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature

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Forests as promoters of terrestrial life-history strategies in East African amphibians.

Müller Hendrik H   Liedtke H Christoph HC   Menegon Michele M   Beck Jan J   Ballesteros-Mejia Liliana L   Nagel Peter P   Loader Simon P SP  

Biology letters 20130327 3


Many amphibian lineages show terrestrialization of their reproductive strategy and breeding is partially or completely independent of water. A number of causal factors have been proposed for the evolution of terrestrialized breeding. While predation has received repeated attention as a potential factor, the influence of other factors such as habitat has never been tested using appropriate data or methods. Using a dataset that comprises 180 amphibian species from various East African habitats, we  ...[more]

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