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Removal of an exotic fish influences amphibian breeding site selection [The Journal of Wildlife Management]

Keywords : amphibian conservation, exotic fish, Gambusia holbrooki, green and golden bell frog, Litoria aurea, mosquitofish, pond draining, tadpole predation

par Frédéric Magné - publié le , mis à jour le

For pond-breeding species, the distribution of larvae is a reflection of habitat suitability and adult breeding site selection. Some species preferentially breed in ephemeral ponds, which can provide benefits for larvae. An alternative strategy used by adults to increase offspring survival is to detect aquatic predators and avoid them when selecting breeding sites. We investigated whether either of these types of breeding site selection are contributing to the negative correlation between the distributions of tadpoles of the threatened green and golden bell frog (Litoria aurea) and the introduced eastern gambusia (Gambusia holbrooki) in Sydney, Australia.(...)

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