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

灰边田鼠种群动态和扩散对空间遗传结构形成的影响

• 批准号: 22370006
• 负责人: SAITOH TAKASHI
• 金额: $ 11.73万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22370006/
• 关键词: 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

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.

由于大多数人口长期在相互互动中维持自身，因此有关人口结构的知识对于理解其可持续性机制至关重要。在这项研究中，我研究了啮齿动物种群的结构 4 年，考虑了它们的动态（遗传漂变）和扩散（基因流）。主要结果如下：（1）性别间基因流动规模存在差异。女性规模（500 m）小于男性（2000 m）； (2)基于mtDNA和基于微卫星DNA的空间结构存在差异。基于微卫星 DNA 的群体包括几个基于 mtDNA 的群体； (3)种群动态对女性的影响显着。在低密度年份，遗传漂变的影响超过了基因流的影响。

项目成果

Climate influences cyclic patterns of vole populations through altering ecological communities : advanced density dependence analyses using time-series data on the Hokkaido vole

气候通过改变生态群落影响田鼠种群的循环模式：使用北海道田鼠时间序列数据进行高级密度依赖性分析

• 发表时间: 2013
• 作者: Saitoh T;Samia NI;Stramer O;Stenseth NC
• 通讯作者: Stenseth NC

Latitudinal gradients in stream invertebrate assemblages at a regional scale in Hokkaido Island, Japan

日本北海道区域尺度溪流无脊椎动物群落的纬度梯度

• 发表时间: 2010
• 期刊: Freshwater Biology
• 影响因子: 2.7
• 作者: Mori T;Murakami M;Saitoh T
• 通讯作者: Saitoh T

Ecological correlates and determinants in the geographical variation of deer morphology

• DOI: 10.1007/s00442-012-2270-7
• 发表时间: 2012-02
• 期刊: Oecologia
• 影响因子: 2.7
• 作者: Chisato Terada;S. Tatsuzawa;T. Saitoh

Assessment and improvement of the accuracy of assignment test to identify immigrants in a grey-sided vole population in a continuous habitat

评估和改进分配测试的准确性，以识别连续栖息地灰边田鼠种群中的移民

• 发表时间: 2013
• 作者: Yamada;T;Saitoh T
• 通讯作者: Saitoh T

Evolutionary Significant Units of Gray-Sided Vole (Myodes rufocanus) in Hokkaido, Japan

日本北海道灰边田鼠 (Myodes rufocanus) 的进化重要单位

• 发表时间: 2011
• 期刊: The Philippine Journal of Science
• 作者: De Guia APO;Saitoh T
• 通讯作者: Saitoh T