Genetic population structure of the eight-barbel loach Lefua echigonia in the Ise Bay region, a single paleo-river basin in central Honshu, Japan
Ito, Gen | Koya, Yasunori | Kitanishi, Shigeru | Horiike, Tokumasa | Mukai, Takahiko
We examined the genetic population structure of Lefua echigonia in the Ise Bay region based on the nucleotide sequences of the mitochondrial DNA cytochrome b region. Previous phylogeographic studies reported that only the Tokai lineage is distributed in this region; however, the present study revealed that the native Kinki lineage (Kuwana sub-lineage) is also distributed here. Moreover, the Tokai lineage was separated into three sub-lineages—Ise Bay, Mikawa-Shizuoka, and Nakatsugawa—with the Ise Bay and Mikawa-Shizuoka sub-lineages further subdivided into six and two local lineages, respectively. We revealed that L. echigonia has clear geographic differentiation within a single paleo-river basin.
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