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Abandoned Foreigners: is the stage set for exotic pet reptiles to invade Central Europe?

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Abstract

Considerable scientific, politic and economic attention has been directed to biological invasions. Multiple pathways serve to introduce species to new environments and the release or escape of pets are among the most important sources for species invasions. Risk assessments help to identify species that are likely to become invasive and to set up preventive measures. Weighing the relative importance of ecological and human factors driving the establishment success of abandoned pets, we here present a new methodological guideline to help prioritising management activities for frequently traded pet reptiles. Climate match scores between the different distribution ranges as well as traits and niche axes shared by native and non-native species were assessed. Moreover, we tested for discrepancies in niche breadth between native and non-native ranges and estimated the ability of species to coexist with humans. Potentially moderate to high establishment success in most species was linked to appropriate climate match scores, broader niches with restrained human impacts and high similarities in reproductive traits with the native herpetofauna. Providing baseline information on the invasion potential of pet reptiles, this assessment calls for trade regulations and, to an even greater degree, for large scale education campaigns to prevent the establishment of non-native populations.

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Authors and Affiliations

  1. Museum of Natural History Dortmund, Münsterstraße 271, 44145, Dortmund, Germany

    Katharina J. Filz

  2. Department of Biogeography, Trier University, Universitätsring 15, 54296, Trier, Germany

    Aline Bohr & Stefan Lötters

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  1. Katharina J. Filz
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  2. Aline Bohr
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  3. Stefan Lötters
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Correspondence to Katharina J. Filz.

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Communicated by Dirk Sven Schmeller.

This article belongs to the Topical Collection: Invasive species.

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Filz, K.J., Bohr, A. & Lötters, S. Abandoned Foreigners: is the stage set for exotic pet reptiles to invade Central Europe?. Biodivers Conserv 27, 417–435 (2018). https://doi.org/10.1007/s10531-017-1444-3

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