Article Dans Une Revue Nature Communications Année : 2025

Speciation and historical invasions of the Asian black-spined toad (Duttaphrynus melanostictus)

Daniel Jablonski
Johanna Ambu
Vishal Kumar Prasad
Kumudani Bala Gautam
Rachunliu G Kamei
Stephen Mahony
Sylvia Hofmann
Rafaqat Masroor
Bérénice Alard
Angelica Crottini
Devin Edmonds
Jianping Jiang
Janak R Khatiwada
Sandeep Kumar Gupta
Amaël Borzée
Leo J Borkin
Dmitriy V Skorinov
Daniel A Melnikov
Konstantin D Milto
Evgeny L Konstantinov
  • Fonction : Auteur
Sven Künzel
Tomasz Suchan
Dmitriy V Arkhipov
Alexei V Trofimets
Tan Van Nguyen
Chatmongkon Suwannapoom
Spartak N Litvinchuk
Nikolay A Poyarkov

Résumé

Animal translocations provide striking examples of the human footprint on biodiversity. Combining continental-wide genomic and DNA-barcoding analyses, we reconstructed the historical biogeography of the Asian black-spined toad (Duttaphrynus melanostictus), a toxic commensal amphibian that currently threatens two biodiversity hotspots through biological invasions (Wallacea and Madagascar). The results emphasize a complex diversification shaped by speciation and mitochondrial introgression that comprises two distinct species. One species (true D. melanostictus) is distributed in the Indian subcontinent and is invasive in Wallacea. The other species, whose nomenclature remains unsettled, diverged from D. melanostictus in the Miocene era (~7 Mya) and diversified across Southeast Asia, from where it was introduced to Madagascar. Remarkably, the Indonesian population of D. melanostictus was recently established from India, which suggests historical, possibly human-assisted dispersal across the Bay of Bengal, reflecting the centuries-old connection between these regions
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hal-04886291 , version 1 (14-01-2025)

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Christophe Dufresnes, Daniel Jablonski, Johanna Ambu, Vishal Kumar Prasad, Kumudani Bala Gautam, et al.. Speciation and historical invasions of the Asian black-spined toad (Duttaphrynus melanostictus). Nature Communications, 2025, 16 (1), pp.298. ⟨10.1038/s41467-024-54933-4⟩. ⟨hal-04886291⟩
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