The taxonomic position and the unexpected divergence of the Habu viper, Protobothrops among Japanese subtropical islands
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文摘

Determined the complete mtDNA sequence of 43 specimens of Protobothrops collected from 12 Japanese subtropical islands.

P. flavoviridis and P. tokarensis form a distinct species group in the phylogeny of 12 Protobothrops species.

Observed a significant genetic divergence of P. flavoviridis between the Amami Clade and the Okinawa Clade.

All specimen of P. tokarensis are included in the Amami Cluster, suggesting the paraphyly of P. flavoviridis.

The divergence time of the two clusters, 6.5 MYA, vastly precedes the geological vicariance of the islands, 1.5 MYA.

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