Genetic variation of the striped hamster (Cricetulus barabensis) and the impact of population density and environmental factors
Genetic variation of the striped hamster (Cricetulus barabensis) and the impact of population density and environmental factors
复制标题
条纹仓鼠（Cricetulus barabensis）的遗传变异以及种群密度和环境因素的影响
DOI：
10.1186/s40555-014-0063-x
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发表时间：
2014-09
影响因子：
1.6
通讯作者：
Lai-xiang Xu*
中科院分区：
文献类型：
--
作者：
Hui-liang Xue;Jin-hui Xu;Lei Chen;Lai-xiang Xu*
黑线仓鼠（Cricetulus barabensis）是华北平原的优势鼠种，近17年来其种群数量持续下降。然而，人们对该物种的种群遗传结构以及它如何受到地理和环境因素的影响知之甚少。本研究对不同地理环境条件下的黑线仓鼠的遗传多样性和遗传分化进行了研究。从四个种群的158只动物的样本的遗传变异估计使用的数据从10个微卫星locites.ResultsGenetic多样性存在于条纹仓鼠。等位基因的数量和杂合性的比例表明中度变异。共检测到46个等位基因，平均等位基因数适中。4个地理群体间存在显著的遗传分化（p< 0.01）。无论地理距离如何，在所有人群中均检测到群体特异性等位基因和可变等位基因丰富度。遗传多样性与种群密度呈正相关，遗传距离部分受地理距离的影响。结论黑线仓鼠的遗传多样性主要受种群密度的影响，部分受地理距离的影响。我们的研究和其他研究的结果共同表明，需要最小的地理距离，以防止不同人群之间的基因流动和遗传分化的显着。
BackgroundThe striped hamster (Cricetulus barabensis) is a dominant rodent species in the North China Plain and has suffered a continuous decline of population size in the last 17 years. However, little is known about the population genetic structure of this species and how it is influenced by geographical and environmental factors. In the present study, we investigated the genetic diversity and genetic differentiation of the striped hamsters in four geographical populations of different environmental features. The genetic variability for a sample of 158 animals from the four populations was estimated using data from 10 microsatellite loci.ResultsGenetic diversity exists in the striped hamster. The number of alleles and the proportion of heterozygosity indicate moderate variability. A total of 46 alleles were detected, with a moderate mean number of alleles. Significant genetic differentiation (p< 0.01) exists among all four examined geographical populations. Population-specific alleles and variable allelic richness were detected in all populations regardless of the geographical distances. The genetic diversity positively correlates with the population density, while the genetic distance is partially affected by the geographical distances. Moreover, the habitat environment is also an important factor influencing the genetic differentiation of the species.ConclusionsThe genetic diversity of the striped hamster is mainly impacted by population density, while partially influenced by geographical distances. The results of our study and other studies collectively suggest that a minimum geographical distance is required to prevent gene flow between different populations and for genetic differentiation to be pronounced.
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影响因子：
2.6
作者：
Liu, Yang;Webber, Simone;Bowgen, Katharine;Schmaltz, Lucie;Bradley, Katharine;Halvarsson, Peter;Abdelgadir, Mohanad;Griesser, Michael
通讯作者：
Griesser, Michael
地理距离影响分散分布的大长尾仓鼠（Tscherskia triton）的分散
影响因子：
3.7
作者：
Xue H;Zhong M;Xu J;Xu L
通讯作者：
Xu L
影响因子：
2.6
作者：
Furlan, Elise;Stoklosa, J.;Griffiths, J.;Gust, N.;Ellis, R.;Huggins, R. M.;Weeks, A. R.
通讯作者：
Weeks, A. R.
影响因子：
2.7
作者：
Zhiyuan Song;Dehua Wang
通讯作者：
Zhiyuan Song;Dehua Wang
影响因子：
4.9
作者：
Aspi, J;Roininen, E;Vilà, C
通讯作者：
Vilà, C