Dietary shift of predator in insular environment : evaluation of relative importance of natural selection and gene flow to phenotypic evolution

岛屿环境中捕食者的饮食转变：评估自然选择和基因流对表型进化的相对重要性

• 批准号: 21570024
• 负责人: HASEGAWA Masami
• 金额: $ 2万
• 依托单位: Toho University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21570024/
• 关键词: 島嶼; 捕食者; 爬虫類; 食性; 自然選択; 系統地理

Identifying and dating historical biological events is an essential step to disentangle causative mechanisms of adaptive evolution during the course of community assembly. We present historical evidence for the roles of predator colonization order in shaping diet shift and morphological change of the predator snake, Elaphe quadrivirgata in order to determine if predator evolved life history traits and color pattern in association with colonization order of prey. Additionally, relative importance of natural selection, random genetic drift, and gene flow on geographic divergence in head morphological traits were evaluated. Field data suggests relatively strong natural selection was observed during the course of population fluctuation.

识别和确定历史生物事件的年代是解开群落组装过程中适应性进化的因果机制的重要一步。我们提出了历史证据的捕食者殖民秩序的作用，在塑造饮食转变和形态变化的捕食蛇，锦蛇quadrivirgata，以确定是否捕食者进化的生活史特征和颜色模式与殖民秩序的猎物。此外，相对重要性的自然选择，随机遗传漂变和基因流的地理分歧头部形态性状进行了评估。野外资料表明，在种群波动过程中，观察到较强的自然选择。

项目成果

伊豆諸島におけるシマヘビの系統地理と形態変化

伊豆群岛条纹蛇的系统发育地理学和形态变化

• 发表时间: 2009
• 期刊: 日本生態学会関東地区会誌 58号
• 作者: 栗山武夫;ほか
• 通讯作者: ほか

A time-calibrated phylogenetic approach to assessing the phylogeography, colonization history and phenotypic evolution of snakes in the Japanese Izu Islands

• DOI: 10.1111/j.1365-2699.2010.02403.x
• 发表时间: 2011-02-01
• 期刊: JOURNAL OF BIOGEOGRAPHY
• 影响因子: 3.9
• 作者: Kuriyama, Takeo;Brandley, Matthew C.;Hasegawa, Masami
• 通讯作者: Hasegawa, Masami

A time-calibrated phylogenetic approach to assessing the pylogeogpahy, colonizatio history and phenotypic evolution of snakes in the Japanese Izu Islands

一种时间校准的系统发育方法，用于评估日本伊豆群岛蛇的pylogeogpahy、殖民历史和表型进化

• 发表时间: 2011
• 期刊: Journal of Biogeography
• 影响因子: 3.9
• 作者: Takeo Kuriyama;Matthew C.;Brandley;Akira Katayama;Akira Mori;Masanao Honda and Masami Hasegawa
• 通讯作者: Masanao Honda and Masami Hasegawa