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<p>To date, the phylogeny of <i>Alburnus</i>, one of the most speciose western Palearctic freshwater fish genera, remains unresolved and its monophyly questioned. Here, we present a taxon-dense phylogeny of the genus and related genera, based on mitochondrial and nuclear DNA sequence data. A special focus is put on relationships between the Peri-Adriatic species. Our analyses confirmed the paraphyly of <i>Alburnus</i> with the retrieval of <i>Leucaspius delineatus</i>, <i>Anaecypris punica</i> and <i>Anaecypris hispanica</i> as three separate clades within it. This finding challenges the current taxonomic framework of the genus and highlights the need for a re-evaluation of its classification. The remaining three well-supported clades are currently assigned to <i>Alburnus</i>: Clade I from Levant and the Tigris and Euphrates basins, Clade V with shemayas and Clade VI comprising all remaining species: from Europe, Ponto-Caspian and Aral regions and Anatolia. Most relationships within Clade V and VI were not resolved likely due to rapid diversification in the late Pliocene and Pleistocene. Monophyly of the Peri-Adriatic group, suggested in previous works, was not confirmed. Moreover, <i>Alburnus arborella</i> did not form a monophyletic lineage and displayed extraordinary diversity both in its native and introduced range. Finally, new evidence for introductions of species were provided.</p>

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Insight into phylogeny of Alburnus (Cypriniformes: Leuciscidae) with zooming in on Peri-Adriatic region

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  • 发表日期：

    2025年8月28日

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  • Eleni Anna Charmpila,
  • Radek Šanda,
  • Ivana Buj,
  • Ignacio Doadrio,
  • Silvia Perea,
  • Spase Shumka,
  • Jasna Vukić

摘要

To date, the phylogeny of Alburnus, one of the most speciose western Palearctic freshwater fish genera, remains unresolved and its monophyly questioned. Here, we present a taxon-dense phylogeny of the genus and related genera, based on mitochondrial and nuclear DNA sequence data. A special focus is put on relationships between the Peri-Adriatic species. Our analyses confirmed the paraphyly of Alburnus with the retrieval of Leucaspius delineatus, Anaecypris punica and Anaecypris hispanica as three separate clades within it. This finding challenges the current taxonomic framework of the genus and highlights the need for a re-evaluation of its classification. The remaining three well-supported clades are currently assigned to Alburnus: Clade I from Levant and the Tigris and Euphrates basins, Clade V with shemayas and Clade VI comprising all remaining species: from Europe, Ponto-Caspian and Aral regions and Anatolia. Most relationships within Clade V and VI were not resolved likely due to rapid diversification in the late Pliocene and Pleistocene. Monophyly of the Peri-Adriatic group, suggested in previous works, was not confirmed. Moreover, Alburnus arborella did not form a monophyletic lineage and displayed extraordinary diversity both in its native and introduced range. Finally, new evidence for introductions of species were provided.