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Phylogeny, Diversification, and Biogeography of (Cypriniformes: Cyprinidae) Reveals Multiple Cross-Drainage Dispersals in Southeast Asia

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Journal Ecol Evol
Date 2024 Nov 18
PMID 39554884
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Abstract

, a kind of small- to medium-sized fish, is widely distributed from southern Eurasia to central Africa. As one of the most diverse genera of Cyprinidae, investigating the phylogeny and biogeography of remains challenging. In this study, we combined sequences of samples collected from Myanmar with sequences downloaded from GenBank to investigate the phylogeny, diversification, and biogeography of on a global scale, with an emphasis on Southeast Asia. Species delimitation results indicated that there are at least 22 potential species, including eight undescribed species in Myanmar, suggesting that the diversity of in this region have been largely underestimated. Diversification analysis suggested a relatively high diversification rate in the early branches of . Ancestral distribution reconstruction results revealed that originated from the Irrawaddy River basin in the late Eocene, approximately 34 million years ago, with subsequent dispersals across different drainages influenced by the uplift of the Qinghai-Tibet Plateau. Our study provided a new insight into the evolutionary history of and the basis for further research on this genus.

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