The demographic histories, genetic relationships and population structure of sedentary fish Pomatoschistus marmoratus (Risso, 1810), which was sampled from the north-eastern basin of the Mediterranean Sea (including the Turkish coasts of the Black Sea, Aegean Sea, Levantine Sea and Sea of Marmara), were investigated by mitochondrial cytochrome c oxidase subunit I (652 bp) and cytochrome b (526 bp) regions. It was found that the population groups had high haplotype diversity while the nucleotide diversity was quite low for both gene regions. Phylogeographic analyses of the haplotypes indicated that the Levantine population (LEV) were genetically different from other populations. Also, the gene flow between LEV and the other populations was very limited. The results of the analyses of neutrality and mismatch distributions that were applied to the population groups were evaluated as a whole. It was determined that the haplogroup that represents the Black Sea and Sea of Marmara populations (BLAMAR) was stable, but the Levantine population (LEV) was under the sudden demographic expansion model following the population bottleneck. The genetic variance indices indicated sudden demographic expansion following population contraction. This was supported by star-shaped haplotype networks. The reason for this limited gene flow and differentiation between the Levantine population (LEV) and the others was linked with wind-driven offshore transport of the larvae and surface currents in these sub-basins. The timing of the differentiation, demographic histories of populations associated with geological and palaeo-climatic events and current ecological conditions were discussed.

中文翻译：

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地中海东北部安纳托利亚海岸大理石虾虎鱼种群的遗传多样性

久坐鱼类的人口历史、遗传关系和种群结构鲶鱼(Risso, 1810)，取自地中海东北部盆地（包括黑海的土耳其海岸、爱琴海、黎凡特海和马尔马拉海），通过线粒体细胞色素 c 氧化酶亚基 I ( 652 bp) 和细胞色素 b (526 bp) 区域。结果发现，这两个基因区域的人口群体具有很高的单倍型多样性，而核苷酸多样性却很低。单倍型的系统地理学分析表明，黎凡特种群（LEV）在遗传上与其他种群不同。此外，LEV 和其他种群之间的基因流动非常有限。对应用于人群的中性和不匹配分布的分析结果进行了整体评估。确定代表黑海和马尔马拉海种群（BLAMAR）的单倍群是稳定的，但黎凡特种群（LEV）处于人口瓶颈后的突然人口扩张模型下。遗传变异指数表明人口收缩后人口突然膨胀。这得到了星形单倍型网络的支持。黎凡特种群 (LEV) 和其他种群之间这种有限的基因流动和分化的原因与这些子流域中幼虫的风力驱动离岸运输和地表水流有关。讨论了分化的时间、与地质和古气候事件相关的种群人口历史以及当前的生态条件。但黎凡特人口（LEV）处于人口瓶颈之后的人口突然扩张模式。遗传变异指数表明人口收缩后人口突然膨胀。这得到了星形单倍型网络的支持。黎凡特种群 (LEV) 和其他种群之间这种有限的基因流动和分化的原因与这些子流域中幼虫的风力驱动离岸运输和地表水流有关。讨论了分化的时间、与地质和古气候事件相关的种群人口历史以及当前的生态条件。但黎凡特人口（LEV）处于人口瓶颈之后的人口突然扩张模式。遗传变异指数表明人口收缩后人口突然膨胀。这得到了星形单倍型网络的支持。黎凡特种群 (LEV) 和其他种群之间这种有限的基因流动和分化的原因与这些子流域中幼虫的风力驱动离岸运输和地表水流有关。讨论了分化的时间、与地质和古气候事件相关的种群人口历史以及当前的生态条件。遗传变异指数表明人口收缩后人口突然膨胀。这得到了星形单倍型网络的支持。黎凡特种群 (LEV) 和其他种群之间这种有限的基因流动和分化的原因与这些子流域中幼虫的风力驱动离岸运输和地表水流有关。讨论了分化的时间、与地质和古气候事件相关的种群人口历史以及当前的生态条件。遗传变异指数表明人口收缩后人口突然膨胀。这得到了星形单倍型网络的支持。黎凡特种群 (LEV) 和其他种群之间这种有限的基因流动和分化的原因与这些子流域中幼虫的风力驱动离岸运输和地表水流有关。讨论了分化的时间、与地质和古气候事件相关的种群人口历史以及当前的生态条件。