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Extreme genetic depletion upon postglacial colonization hampers determining the provenance of introduced palmate newt populations

Elfering, Robin; Mannix, Sophie; Allain, Steve; Ambu, Johanna; Crochet, Pierre-André; van Doorn, Loïc; Dufresnes, Christophe; Jehle, Robert; Julian, Angela; Baird, Fairlie Kirkpatrick; O’Brien, David; Secondi, Jean; Speybroeck, Jeroen; Theodoropoulos, Anagnostis; Stark, Tariq; Wielstra, Ben

Extreme genetic depletion upon postglacial colonization hampers determining the provenance of introduced palmate newt populations Thumbnail


Authors

Robin Elfering

Sophie Mannix

Steve Allain

Johanna Ambu

Pierre-André Crochet

Loïc van Doorn

Christophe Dufresnes

Angela Julian

Fairlie Kirkpatrick Baird

David O’Brien

Jean Secondi

Jeroen Speybroeck

Anagnostis Theodoropoulos

Tariq Stark

Ben Wielstra



Abstract

MtDNA barcoding is regularly applied to determine the provenance of invasive species. Variation in spatial genetic structuring across a species’ range, typically high within glacial refugia and low in postglacially colonized areas, influences the precision of this approach. The palmate newt (Lissotriton helveticus) has been introduced north of its native range inside the Netherlands. We conduct mtDNA barcoding to try and retrace the origin of the introduced localities. A large increase in sample size, particularly focusing on temperate Europe, emphasizes that the palmate newt shows practically no genetic variation outside the Iberian Peninsula glacial refugium. While we find a haplotype previously only known from the Iberian Peninsula inside the native range in Belgium, the haplotype present in the introduced Dutch populations occurs widely throughout the native range north of the Iberian Peninsula. Although mtDNA barcoding can be a powerful tool in invasion biology, the palmate newt case exposes its limitations.

Citation

Elfering, R., Mannix, S., Allain, S., Ambu, J., Crochet, P., van Doorn, L., …Wielstra, B. (2024). Extreme genetic depletion upon postglacial colonization hampers determining the provenance of introduced palmate newt populations. Amphibia-Reptilia, 1-8. https://doi.org/10.1163/15685381-bja10181

Journal Article Type Article
Acceptance Date May 3, 2024
Publication Date May 24, 2024
Deposit Date May 24, 2024
Publicly Available Date May 28, 2024
Journal Amphibia-Reptilia
Print ISSN 0173-5373
Electronic ISSN 1568-5381
Publisher Brill Academic Publishers
Peer Reviewed Peer Reviewed
Pages 1-8
DOI https://doi.org/10.1163/15685381-bja10181

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