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Effects of habitat fragmentation on the distribution and genetic diversity of populations in small mammal species

Research Project

Project/Area Number 18380096
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 林学・森林工学
Research InstitutionForestry and Forest Products Research Institute

Principal Investigator

YASUYUKI Ishibashi  Forestry and Forest Products Research Institute, Hokkaido Research Center, Research Fellow (80353580)

Co-Investigator(Kenkyū-buntansha) SAITOH Takashi  Hokkaido University, 北方生物圏フィールド科学センター, Professor (00183814)
KONNO Yasuo  Obihiro Univ. of Agriculture and Veterinary Medicine, 畜産学部, Associate Professor (00111196)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥10,610,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2007: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2006: ¥5,800,000 (Direct Cost: ¥5,800,000)
Keywordsgenetic diversity / isolation / habitats / distribution / molecular ecology / fragmentation / small mammals / gene flow / 哺乳類
Research Abstract

We examined effects of fragmentation and isolation of habitats on spatial distribution and genetic diversity of small rodent species in Hokkaido, Japan. First, we investigated determinant ecological factors on the distribution of small rodents in a southern part of Obihiro, where there are many isolated woods with various sizes. Myodes rufocanus and Apodemus speciosus were captured in almost all woods but A. argenteus was captured in a limited number of woods. Logistic regression analysis indicated that the distribution of A. argenteus was related to the distance from a large forest beside a river. We also examined the distribution of Sciurus vulgaris by using the camera-trapping technique. Logistic regression analysis indicated that its distribution was related to the size of woods, distances from a large forest beside a river and the presence of Japanese walnuts. Next, we determined a partial sequence of mitochondrial DNA (436 bp) in 673 M rufocanus collected from 34 isolated woods (0.3-7.6 ha), and detected 76 different haplotypes. The number of samples within isolated-woods populations and the observed number of haplotypes were positively correlated. However, there was no correlation between the size of woods and the number of haplotypes within populations. When examined the relationship between geographic distance between woods and genetic distance between populations, no significant relationship was observed. These results suggest that effects of genetic drift within populations on genetic differentiation among populations are much greater than those of gene flow. Taken together, these studies suggest that some rodent species, such as M rufocanus, are distributed in every isolated wood, as if habitat isolation did not affect their distribution, but genetic effects of isolation are not small even in those species. We need to examine both distribution and genetics to preserve local populations of wild animals, especially those with small mobility capability.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (23 results)

All 2008 2007

All Journal Article (8 results) (of which Peer Reviewed: 3 results) Presentation (15 results)

  • [Journal Article] エゾヤチネズミの「複数父性」2008

    • Author(s)
      石橋靖幸
    • Journal Title

      北方林業 60

      Pages: 2-2

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Effect of local density of males on the occurrence of multimale mating in gray-sided voles(Myodes rufocanus)2008

    • Author(s)
      Yasuyuki Ishibashi
    • Journal Title

      Journal of Mammalogy 89

      Pages: 388-397

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Multiple paternity in the grey-sided vole.2008

    • Author(s)
      Yasuyuki Ishibashi
    • Journal Title

      Northern Forestry, Japan 60

      Pages: 2-2

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Effect of local density of males on the occurrence of multimale mating in gray-sided voles(Myodes rufocanus).2008

    • Author(s)
      Yasuyuki Ishibashi
    • Journal Title

      Journal of Mammalogy 89

      Pages: 388-397

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] エゾヤチネズミの「複数父性」2008

    • Author(s)
      石橋 靖幸
    • Journal Title

      北方林業 60

      Pages: 2-2

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Effect of local density of males on the occurrence of multi-male mating in gray-sided vdes(Myodes rufocanus)2008

    • Author(s)
      Yasuyuki Ishibashi
    • Journal Title

      Journal of Mammalogy 89

      Pages: 388-397

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low genetic diversities in isolated populations of the Asian black bear(Ursus thibetanus)in Japan,in comparison with large stable populations2007

    • Author(s)
      Naoki Ohnishi
    • Journal Title

      Conservation Genetics 8

      Pages: 1331-1337

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Low genetic diversities in isolated populations of the Asian black bear(Ursus thibetanus) in Japan, in comparison with large stable populations.2007

    • Author(s)
      Naoki Ohnishi
    • Journal Title

      Conservation Genetics 8

      Pages: 1331-1337

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 東北〜近畿の連続個体群におけるツキノワグマの遺伝構成2008

    • Author(s)
      大西 尚樹
    • Organizer
      日本生態学会第55回全国大会
    • Place of Presentation
      福岡・九州大学
    • Year and Date
      2008-03-15
    • Related Report
      2007 Annual Research Report
  • [Presentation] 帯広市南部の分断林における野ネズミ3種(エゾヤチネズミ、エゾアカネズミ、ヒメネズミ)の分布とその決定要因2008

    • Author(s)
      渡邊淳之介
    • Organizer
      2007(平成19)年度日本生態学会北海道地区大会
    • Place of Presentation
      札幌
    • Year and Date
      2008-02-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Determinant factors affecting the distribution of three rodent species among fragmented forests.2008

    • Author(s)
      Junnosuke Watanabe
    • Organizer
      2007 Annual Meeting of the Ecological Society of Japan, Hokkaido Branch
    • Place of Presentation
      Sapporo
    • Year and Date
      2008-02-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 帯広市南部の分断林における野ネズミ3種(エゾヤチネズミ、エゾアカネズミ、ヒメネズミ)の分布とその決定要因2008

    • Author(s)
      渡邊 淳之介
    • Organizer
      平成19年度日本生態学会北海道地区大会
    • Place of Presentation
      札幌・北海道大学
    • Year and Date
      2008-02-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] エゾヤチネズミにおける複数オス交配の頻度に関する局所オス密度の影響2007

    • Author(s)
      石橋靖幸
    • Organizer
      日本哺乳類学会2007年度大会
    • Place of Presentation
      東京
    • Year and Date
      2007-09-16
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Effect of local density of males on the occurrence of multi-male mating in gray-sided voles.2007

    • Author(s)
      Yasuyuki Ishibashi
    • Organizer
      2007 Annual Meeting of the Mammalogical Society of Japan
    • Place of Presentation
      Tokyo
    • Year and Date
      2007-09-16
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] エゾヤチネズミにおける複数オス交配の頻度に関する局所オス密度の影響2007

    • Author(s)
      齊藤 隆
    • Organizer
      日本哺乳類学会2007年度大会
    • Place of Presentation
      東京・東京農工大学
    • Year and Date
      2007-09-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] Spatial genetic structure of the gray-sided vole in Hokkaido,Japan2007

    • Author(s)
      Takashi Saitoh
    • Organizer
      Modern Achievements in Population,Evolutionary and Ecological Genetics:International Symposium
    • Place of Presentation
      ロシア・ナホトカ
    • Year and Date
      2007-09-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Population genetic structure revealed by using Y-chromosome DNA markers in the grey-sided vole,Clethrionomys rufocanus2007

    • Author(s)
      Yasuyuki Ishibashi
    • Organizer
      Modern Achievements in Population,Evolutionary and Ecological Genetics:International Symposium
    • Place of Presentation
      ロシア・ナホトカ
    • Year and Date
      2007-09-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Spatial genetic structure of the gray-sided vole in Hokkaido, Japan.2007

    • Author(s)
      Takashi Saitoh
    • Organizer
      Modern Achievements in Population, Evolutionary and Ecological Genetics : International Symposium
    • Place of Presentation
      Russia, Nakhodka
    • Year and Date
      2007-09-11
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Population genetic structure revealed by using Y-chromosome DNA markers in the grey-sided vole, Clethrionomys rufocanus.2007

    • Author(s)
      Yasuyuki Ishibashi
    • Organizer
      Modern Achievements in Population, Evolutionary and Ecological Genetics : International Symposium
    • Place of Presentation
      Russia, Nakhodka
    • Year and Date
      2007-09-11
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Spatial genetic structure of the gray-sided vole in Hokkaido,Japan2007

    • Author(s)
      Takashi Saitoh
    • Organizer
      Modern Achievements in Population, Evolutionary and Ecological Genetics:International Symposium
    • Place of Presentation
      ロシア・ナホトカ
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] Population genetic structure revealed by using Y-chromosome DNA markers in the grey-sided vole,Clethrionomys rufocanus2007

    • Author(s)
      Yasuyuki Ishibashi
    • Organizer
      Modern Achievements in Population, Evolutionary and Ecological Genetics:International Symposium
    • Place of Presentation
      ロシア・ナホトカ
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] 森林の分断化が野ネズミの分布に与える影響2007

    • Author(s)
      渡邊淳之介
    • Organizer
      日本生態学会第54回大会
    • Place of Presentation
      愛媛・松山
    • Year and Date
      2007-03-20
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Effects of habitat fragmentation on the distribution of small rodent species.2007

    • Author(s)
      Junnosuke Watanabe
    • Organizer
      The 54th Annual Meeting of the Ecological Society of Japan
    • Place of Presentation
      Ehime, Matsuyama
    • Year and Date
      2007-03-20
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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