Skull Morphology and Mitochondrial DNA Sequence Analysis in the Lesser Japanese Mole (Mogera imaizumii) from the Imperial Palace (Tokyo, Japan).

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  • ENDO Hideki
    Department of Zoology, National Science Museum, Tokyo, Shinjuku-ku, Tokyo 169-0073, Japan
  • KAWASHIMA Schu
    Department of Veterinary Anatomy, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
  • TSUTSUMI Takao
    International Agriculture Division, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
  • SASAKI Motoki
    The University Museum, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
  • YAMAGIWA Daishiro
    Department of Veterinary Anatomy, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
  • HAYASHI Yoshihiro
    Department of Veterinary Anatomy, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, and The University Museum, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan

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Since about 1630, the Imperial Palace has been biologically isolated from other habitats by the development and urbanization of Tokyo. We morphologically examined the skulls of the lesser Japanese mole (Mogera imaizumii) from the Imperial Palace and compared them with those from Kanto District, while the sequences of the cytochrome b and 12S rRNA genes were also analyzed to clarify the genetic status of this isolated population. The skulls from the Imperial Palace were much larger than those from Kanto District in the length items. We suggest that the Imperial Palace skulls morphologically may compose a cluster as a large body-sized type in Kanto District within the dots of Mogera imaizumii in charts of principal component analysis. The mitochondrial DNA sequences of the Imperial Palace population were highly homologous to those of other Tokyo population at the level of 98.5% in cytochrome b and 98.7% in 12S rRNA genes.

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