检索结果-南通市图书馆

检索条件"作者=Tsegazeabe Hadush Haileselasie"

共 1 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

The legacy of long distance dispersal: population genetics of Daphnia galeata in China

The legacy of long distance dispersal: population genetics o...

引用

“全球变化下的海洋与湖沼生态安全”学术交流会

作者： Lei XU tsegazeabe hadush haileselasie Joachim Mergeay Henri Dumont Bo-Ping HAN Luc De Meester Institute of Hydrobiology Jinan University Laboratory of Aquatic Ecology Evolution and Conservation KU Leuven

Many aquatic organisms have dormant stages in their life history that foster long distance dispersal and potential gene flow. Daphnia galeata is widely distributed in four main river catchments and the Tibetan Plateau across China, nuclear and mitochondrial markers are used to investigate population and genetic structure over vast geographic distances under. We observed evidence the contribution of long distance dispersal as well as genetic isolation in the landscape genetic structure of this species. Eight out of the sixty six observed COI haplotypes were shared among populations in all four catchments. Across the whole data set in China, isolation by distance is observed for both mitochondrial as well as nuclear markers, but it was highly dependent on the presence of the Tibetan populations, which were highly differentiated from the populations in the other catchments. There was a lack of strong signal of catchment for the distribution of mtDNA haplotypes and genetic structure as derived from microsatellite markers, even though the distances covered were substantial（＞3 000 km）. Our data suggest that D. galeata can achieve long distance dispersal and some populations with specific haplotypes can colonize habitats from the temperate to the subtropical zones. There was no strong pattern of genetic differentiation in relation to temperature or altitude when the Tibetan populations are removed from the whole dataset. The populations in the Tibetan plateau stand out and are strongly isolated from any of the others. They have the highest genetic diversity, with up to 14 private haplotypes being found in a single population. Yet, all these haplotypes seem to be derived from one single haplotype, suggesting that these populations are both very old and isolated. Our findings of long distance dispersal in the four catchments combined with high genetic differentiation among populations（mean FST=0.18） are in line with a scenario where population genetic structure is strongly i

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：