• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1996 Fiscal Year Final Research Report Summary

Maintenance and declining mechanisms of endangered relict populations in moles

Research Project

Project/Area Number 07640828
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 生態
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

ABE Hisashi  Hokkaido University, Faculty of Agriculture, Professor., 農学部, 教授 (80001428)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Munehiro  Osaka University, Faculty of Medicine, Instractor., 医学部, 助手 (70177096)
Project Period (FY) 1995 – 1996
KeywordsMoles / Endangered relict population / mtDNA / CO1
Research Abstract

In Mogera imaizumii, there are eight relict populations which are scattered to the southern Honshu, Shikoku, and Shodoshima, those being far from the main population of this mole distributing to the northern half of Honshu. In M.tokudae, relict populations are found at Mitsuke-Tochio and at Niitsu-Gosen where are situated in the range of M.imaizumii in the Echigo Plain. The following three types of isolating mechanisms were detected for these relict populations. a) Because of less suitable soil condition of habitats, the invasion of ecologically dominant species has been blocked and then inferior species could have maintained its range in these habitats. This case has been usually found at habitats on rocky mountain areas. b) Relict populations of ecologicallyy inferior species have been often maintained in habitats which are surrounded by barrier habitats unsuitable for dominant species. In this case, however, the former habitats are also suitable for the dominant species so that this species can easily exclude inferior species in the habitats when the dominant species could break the barrier. c) Rice fields which are the main habitats of Japanese moles have been altered to habitats unsuitable for larger moles, M.tokudae, under the plan for the basal improvement of agricultural fields. After the habitat alteration, the population of M.tokudae was sudivided by the invasion of smaller M.imaizumii into small isolated patches at the peripheral areas of the main distribution of M.tokudae in the Echigo Plain. The nucleotide sequences of the cytochrome oxidase subunit 1 gene indicated that relict populations of M.imaizumii from Shikoku, Shodoshima and Chugoku districts of Honshu constituted a closely related cluster. They showed relatively large differentiation rate from the Kii population which is rather close to Toyama and Ishikawa populations in Honshu.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Abe, Hisashi: "Revision of the Asian moles of the genus Mogera." Journal of the Mammalogical Society of Japan. 20・1. 51-68 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Abe, Hisashi: "Habitat factors affecting the geographic size variation in Japanese moles" Mammal Study. 21. 71-87 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 阿部,永: "日本産食虫類の種名の検討" 哺乳類科学. 36. 97-108 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Motokawa. Masaharu: "On the specific names of the Japanese moles of the genus Mogera (Insectivora, Talpidae)" Mammal Study. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Abe, Hisashi: "Revision of the Asian moles of the genus Mogera." Journal of the Mammalogical Society of Japan. 20. 51-68 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Abe, Hisashi: "Habitat factors concerning the geographic variation in Japanese moles" Mammal Study. 21. 71-87 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Abe, Hisashi: "A review of specific names of Japanese insectivores" Honyurui Kagaku. 36. 97-108 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Motokawa, M.and H.Abe: "On the specific names of the Japanese moles of the genus Mogera (Insectivora, Talpidae)" Mammal Study. (in press.).

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1999-03-09  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi