Hostname: page-component-5d59c44645-lfgmx Total loading time: 0 Render date: 2024-03-03T18:13:10.028Z Has data issue: false hasContentIssue false

What type of amphibian tunnel could reduce road kills?

Published online by Cambridge University Press:  12 May 2004

David Lesbarrères
Affiliation:
Ecological Genetics Research Unit, Department of Biological and Environmental Sciences, PO BOX 65, FIN-00014, University of Helsinki, Finland
Thierry Lodé
Affiliation:
Laboratoire d'Écologie Animale, Université d'Angers, Belle-Beille, F-49045, Angers cedex, France
Juha Merilä
Affiliation:
Ecological Genetics Research Unit, Department of Biological and Environmental Sciences, PO BOX 65, FIN-00014, University of Helsinki, Finland
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Increased traffic volumes worldwide are contributing to amphibian declines, and measures to reduce the occurrence of road kills are needed. One possible measure is the construction of underpasses through which animals can pass under roads, but little is known about whether amphibians will choose tunnels if given a choice or about their preferences for different tunnel types. We tested the preferences of three anuran species for two kinds of concrete amphibian tunnels currently used in France. One was a tunnel lined with soil, the other a bare concrete pipe. The animals could use the tunnels or bypass them over a grassy area. Water frogs Rana esculenta and common toads Bufo bufo showed a preference for the tunnels, whereas agile frogs Rana dalmatina avoided them. Among the individuals that chose either of the tunnels, all species showed a significant preference for the tunnel lined with soil. These results indicate that species differ in their preferences and in their likelihood of using underpasses when given a choice. This highlights the fact that there is no unique solution to the problem, and underpasses are only one of the possible mitigation measures that need to be assessed.

Type
Short Communication
Copyright
© 2004 Fauna & Flora International