Effects of population dynamics and dispersal on the formation of spatial genetic structure in gray-sided vole populations

• Project/Area Number: 22370006
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Hokkaido University
• Principal Investigator: SAITOH TAKASHI 北海道大学, 北方生物圏フィールド科学センター, 教授 (00183814)
• Co-Investigator(Kenkyū-buntansha): KISHIDA Osamu 北海道大学, 北方生物圏フィールド科学センター, 准教授 (00545626) ; ISHIBASHI Yasuyuki 独立行政法人森林総合研究所関西支所, 研究員 (80353580)
• Project Period (FY): 2010-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000); Fiscal Year 2013: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2010: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
• Keywords: 生物多様性 / 集団遺伝 / エゾヤチネズミ / 個体数変動 / 遺伝的浮動 / 遺伝子流動 / 生態学 / 動物 / 遺伝学

Research Abstract

Since most populations long sustain themselves in their mutual interaction, the knowledge about the population structure is essential to understand a mechanism of their sustainability. In this study I investigated the structure of a rodent population for 4 years taking their dynamics (genetic drift) and dispersal (gene flow) into consideration. The main results are as follows: (1) A scale of gene flows differed between sexes. Females' scale (500 m) was smaller than males' (2000 m); (2) The spatial structure differed between mtDNA-based and microsatellite DNA-based structure. A microsatellite DNA-based population included several mtDNA-based populations; (3) Effects of population dynamics was significant in females. Effects of genetic drift dominated over those of gene flow in a low density year.

Research Products

• [Journal Article] Effects of inter-guild relationships on patterns in species diversity at a broad-spatial scale (2014)
  • Author(s): Mori T, Saitoh T
  • Journal Title: Ecology Volume: 95(1) Issue: 1 Pages: 132-141
  • DOI: 10.1890/13-0914.1
  • Peer Reviewed
• [Journal Article] Male-biased dispersal makes intersexual difference in subpopulation structure of the gray-sided vole (2013)
  • Author(s): Ishibashi Y, Zenitani J, Saitoh T
  • Journal Title: Journal of Heredity Volume: 104(5) Issue: 5 Pages: 718-724
  • DOI: 10.1093/jhered/est034
  • Peer Reviewed
• [Journal Article] Refugia in glacial ages lead to the current discontinuous distribution patterns of the dark red-backed vole Myodes rex on Hokkaido (2013)
  • Author(s): Kawai K, Hailer F, de Guia AP, Ichikawa H, Saitoh T
  • Journal Title: Japan. Zoological Science Volume: 30 Issue: 8 Pages: 642-650
  • DOI: 10.2108/zsj.30.642
  • Peer Reviewed
• [Journal Article] New mtDNA haplotypes of the sika deer (Cervus nippon) found in Hokkaido (2013)
  • Author(s): Terada C, Yamada T, Uno H, Saitoh T
  • Journal Title: Japan suggest human-mediated immigration. Mammal Study Volume: 38(2) Issue: 2 Pages: 123-129
  • DOI: 10.3106/041.038.0208
  • Peer Reviewed
• [Journal Article] Ecological correlates and determinants in the geographical variation of deer morphology (2012)
  • Author(s): Chisato Terada, Shirow Tatsuzawa, Takashi Saitoh
  • Journal Title: Oecologia Volume: (印刷中) Issue: 4 Pages: 981-994
  • DOI: 10.1007/s00442-012-2270-7
  • Peer Reviewed
• [Journal Article] Interspecific differences in tannin intake levels of forest-dwelling rodents in the wild revealed by a new method using fecal proline content (2011)
  • Author(s): Shimada T, Nishii E, Saitoh T
  • Journal Title: Journal of Chemical Ecology Volume: 37 Issue: 12 Pages: 1277-1284
  • DOI: 10.1007/s10886-011-0045-y
  • Peer Reviewed
• [Journal Article] Evolutionary Significant Units of Gray-Sided Vole (Myodes rufocanus) in Hokkaido, Japan (2011)
  • Author(s): De Guia APO, Saitoh T
  • Journal Title: The Philippine Journal of Science Volume: 140(1) Pages: 41-50
  • Peer Reviewed
• [Journal Article] Evolutionary significant units of the gray-sided vole (Myodes rufocanus) in Hokkaido, Japan (2011)
  • Author(s): De Guia APO, Saitoh T
  • Journal Title: The Philippine Journal of Science Volume: 140 Pages: 41-50
  • Peer Reviewed
• [Journal Article] Evolutionary significant units of the gray-sided vole (Myodes rufocanus) in Hokkaido, Japan (2011)
  • Author(s): De Guia APO
  • Journal Title: The Philippine Journal of Science Volume: 140(印刷中)
  • Peer Reviewed
• [Journal Article] daptive management of a Sika deer population in Hokkaido, Japan : theory and practice (2010)
  • Author(s): Kaji K, Saitoh T, Uno H, Matsuda H, Yamamura K
  • Journal Title: Population Ecology Volume: 52(3) Pages: 373-387
  • Peer Reviewed
• [Journal Article] Culling versus density effects in the management of a deer population (2010)
  • Author(s): Ueno M, Kaji K, Saitoh T
  • Journal Title: Journal ofWildlife Management Volume: 74(7) Pages: 1472-1483
  • Peer Reviewed
• [Journal Article] Latitudinal gradients in stream invertebrate assemblages at a regional scale in Hokkaido Island, Japan (2010)
  • Author(s): Mori T, Murakami M, Saitoh T
  • Journal Title: Freshwater Biology Volume: 55 Pages: 1520-1532
  • Peer Reviewed
• [Journal Article] エゾヤチネズミは乱婚か?DNAマーカーを用いた配偶様式の研究 (2010)
  • Author(s): 石橋靖幸
  • Journal Title: 森林保護 Volume: 319 Pages: 29-34
• [Presentation] A mechanism underlying high genetic diversity in the grey-sided vole : a role of male-biased dispersal and spatial genetic structure (2014)
  • Author(s): Saitoh T, Yamada, Kanke E, Zenitanni J, Ishibashi Y, Ohnishi N, de Guia APO
  • Organizer: The 11th INTECOL (International Ecological Congress)
  • Place of Presentation: London, UK
  • Year and Date: 2014-08-23
• [Presentation] Intersexual differences in spatial genetic structure in mammals : its implication in wildlife management (2014)
  • Author(s): Saitoh T
  • Organizer: The 6th FEAFES international Congress
  • Place of Presentation: 海口市,中国
  • Year and Date: 2014-04-10
  • Invited
• [Presentation] Annual changes of spatial genetic structures in a grey-sided vole population revealed by mitochondrial DNA and microsatellite DNA analyses (2013)
  • Author(s): Yamada, T, Sugiki M, Ishibashi Y, Saitoh T
  • Organizer: The 11th INTECOL (International Ecological Congress)
  • Place of Presentation: London, UK
  • Year and Date: 2013-08-22
• [Presentation] Assessment and improvement of the accuracy of assignment test to identify immigrants in a grey-sided vole population in a continuous habitat (2013)
  • Author(s): Yamada, T, Saitoh T
  • Organizer: The 11th International Mammalogical Congress
  • Place of Presentation: Belfast, UK
• [Presentation] Climate influences cyclic patterns of vole populations through altering ecological communities : advanced density dependence analyses using time-series data on the Hokkaido vole (2013)
  • Author(s): Saitoh T, Samia NI, Stramer O, Stenseth NC
  • Organizer: The 11th International Mammalogical Congress
  • Place of Presentation: Belfast, UK
• [Presentation] Assessment and improvement of the accuracy of assignment test to identify immigrants in a grey-sided vole population in a continuous habitat (2013)
  • Author(s): Toshiya YAMADA, Takashi SAITOH
  • Organizer: The 11th International Mammalogical Congress
  • Place of Presentation: Queen's University（ ベルファスト，英国）
• [Presentation] エゾヤチネズミの遺伝的空間構造の年次変化 -雌雄の分散パターンに着目して (2013)
  • Author(s): 杉木学，山田敏也，石橋靖幸，齊藤隆
  • Organizer: 2012年度日本生態学会・北海道地区大会
  • Place of Presentation: 北海道大学（札幌市）
• [Presentation] mtDNA とmsDNA 解析に基づく、エゾヤチネズミ個体群の遺伝構造 - 時間と空間、2 つのスケールの観点から (2013)
  • Author(s): 杉木学，山田敏也，石橋靖幸，齊藤隆
  • Organizer: 第60回日本生態学会
  • Place of Presentation: 静岡県コンベンションアーツセンター（静岡市）
• [Presentation] 標識再捕獲法と遺伝的手法によるエゾヤチネズミ個体群の移入率の推定：異なる手法から得られる推定値の信頼性の検討 (2013)
  • Author(s): 山田敏也，齊藤隆
  • Organizer: 第60回日本生態学会
  • Place of Presentation: 静岡県コンベンションアーツセンター（静岡市）
• [Presentation] A mechanism underlying high genetic diversity in the grey-sided vole : a role of male-biased dispersal and spatial genetic structure (2012)
  • Author(s): Saitoh T, Yamada T, Kanke E, Zenitani J, Ishibashi Y, Ohnishi N, de Guia APO
  • Organizer: The 13th Rodens et Spatium conference
  • Place of Presentation: Rovaniemi, Finland
  • Year and Date: 2012-07-20
• [Presentation] Estimation of maintaining genetic diversity based on comparison between mtDNA and nDNA : small mammal as a model species (2012)
  • Author(s): Kanke, E., Zenitani, J., Ishibashi, Y., Onishi, N., Anna Pauline de Guia, Kawai, K., Saitoh, T
  • Organizer: The 5th EAFES International Congress
  • Place of Presentation: 龍谷大学(大津市)
  • Year and Date: 2012-03-18
• [Presentation] Effects of male-biased dispersal on mating system and spatial genetic structure (2012)
  • Author(s): Saitoh T, Ishibashi Y
  • Organizer: International workshop by Konnevesi Research Station, University of Jyväskylä
  • Place of Presentation: Konnevesi, Finland
  • Year and Date: 2012-02-23
• [Presentation] A mechanism underlying high genetic diversity in the grey-sided vole: a role of male-biased dispersal and spatial genetic structure (2012)
  • Author(s): Saitoh T, Yamada T, Kanke E, de Guia AP, Ishibashi Y
  • Organizer: The 13th Rodens et Spatium conference
  • Place of Presentation: Arktikum, ロヴァニエミ （フィンランド）
• [Presentation] エゾヤチネズミの北海道集団における遺伝的多様性と空間的遺伝構造 (2011)
  • Author(s): 菅家恵未
  • Organizer: 第58回日本生態学会大会
  • Place of Presentation: 札幌コンベンションセンター
  • Year and Date: 2011-03-10
• [Presentation] Intersexual differences in spatial genetic structure in mammals: its implication in wildlife management
  • Author(s): Takashi SAITOH
  • Organizer: The 6th EAFES International Congress
  • Place of Presentation: HUANDAO TIDE Hotel（海口市，中国）
  • Invited
• [Presentation] A mechanism underlying high genetic diversity in the grey-sided vole: a role of male-biased dispersal and spatial genetic structure
  • Author(s): Saitoh T, Yamada T, Kanke E, Zenitani J, Ishibashi Y, Ohnishi N, de Guia APO
  • Organizer: The 11th INTECOL (International Ecological Congress)
  • Place of Presentation: ICC ExCeL（ロンドン，英国）
• [Presentation] Climate influences cyclic patterns of vole populations through altering ecological communities: advanced density dependence analyses using time-series data on the Hokkaido vole
  • Author(s): Takashi SAITOH, Noelle I. Samia, Osnat Stramer, Nils C. Stenseth
  • Organizer: The 11th International Mammalogical Congress
  • Place of Presentation: Queen's University（ ベルファスト，英国）
• [Presentation] Annual changes of spatial genetic structures in a grey-sided vole population revealed by mitochondrial DNA and microsatellite DNA analyses
  • Author(s): Toshiya YAMADA, Manabu SUGIKI, Yasuyuki ISHIBASHI,Takashi SAITOH
  • Organizer: The 11th INTECOL (International Ecological Congress)
  • Place of Presentation: ICC ExCeL（ロンドン，英国））