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首页> 外文期刊>Bonn zoological Bulletin >Biogeographic history of Gerbillus campestris (Rodentia, Muridae) in Morocco as revealed by morphometric and genetic dat
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Biogeographic history of Gerbillus campestris (Rodentia, Muridae) in Morocco as revealed by morphometric and genetic dat

机译：形态计量学和遗传数据揭示的非洲香叶菊的生物地理历史（啮齿类，鼠科）

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摘要

Gerbillus campestris is a widely distributed small rodent that lives in various habitats in North Africa and can bea potential agricultural pest. We conducted a biogeographic study of this species with an integrative approach using morphometricdata from body and craniomandibular distances and molecular genetic data from the cytochrome b gene of themitochondrial DNA. We collected 96 individuals in six localities from central, northern and eastern Morocco. Data from18 morphological characters were used in multivariate statistical analyses and molecular data were analysed using maximumlikelihood and median-joining networks. Our analyses confirmed the high morphological variability in this speciesand allowed to discriminate four groups containing the studied populations. We found that a few craniomandibular measurementshad the highest contribution in the differences between populations, and that this variability reflected a spatial andenvironmental differentiation. In the genetic analyses, we placed our six populations and six individuals from four othercountries in nine previously identified phylogenetic lineages in this species, and we also added a tenth lineage. Limitedgene flow, isolation by distance and biogeographic barriers were further explored to explain this genetic structuration. Wealso jointly examined morphometric and genetic variability and found that the morphological groups were congruent withthe genetic lineages and the geographic distribution. A better knowledge of the phenotypic plasticity and genetic diversityof this gerbil can be used to comprehend the micro-evolutionary processes in other small mammals in North Africa.
机译：Gerbillus campestris是一种分布广泛的小型啮齿动物，生活在北非的各种生境中，可能是潜在的农业害虫。我们使用整合的方法对这一物种进行了生物地理研究，使用了来自人体和颅颌距离的形态数据和来自线粒体DNA细胞色素b基因的分子遗传数据。我们从摩洛哥中部，北部和东部的六个地方收集了96个人。来自18个形态特征的数据用于多元统计分析，并使用最大似然和中位数连接网络分析分子数据。我们的分析证实了该物种的高度形态变异性，可以区分出包含研究种群的四个群体。我们发现，少数颅下颌测量对人群之间的差异贡献最大，并且这种变化反映了空间和环境的差异。在遗传分析中，我们将来自其他四个国家的六个种群和六个个体置于该物种先前鉴定的九个系统发生谱系中，并且还添加了第十个谱系。进一步探索了有限的基因流动，距离隔离和生物地理障碍，以解释这种遗传结构。我们还共同检查了形态学和遗传变异性，发现形态学群体与遗传谱系和地理分布是一致的。对这种沙鼠的表型可塑性和遗传多样性的更好了解可以用来理解北非其他小型哺乳动物的微进化过程。

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