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首页> 外文期刊>Aquatic Biology >Population subdivision of saddled seabream Oblada melanura in the Aegean Sea revealed by genetic and morphometric analyses
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Population subdivision of saddled seabream Oblada melanura in the Aegean Sea revealed by genetic and morphometric analyses

机译：遗传和形态计量分析揭示了爱琴海马背鲷Oblada melanura的种群细分

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ABSTRACT: The population structure of marine fishes is often cryptic, due to limited knowledge about life history and ecological habitats. Understanding environmental stability is a challenge to retrieve possible structuring patterns responsible for dispersal and demographic habits. In the present study, a combination of genetic and phenotypic assessments was applied in order to investigate population structure of the saddled seabream Oblada melanura in the Aegean Sea, eastern Mediterranean basin. Analyses of 6 microsatellite loci and 15 morphometric characters revealed that saddled seabream individuals differ among northern, southern and central Aegean populations. These observed boundaries may be related to the differentiated seascape of the Aegean Sea, suggesting that oceanographic factors are a significant stressor for population subdivision of the saddled seabream. Individual-based landscape genetic approaches and multivariate analysis of the morphometric characters suggest the presence of habitat-related limitations of saddled seabream dispersal potential. Molecular genetics and phenotypic analyses along with life-history traits provide useful informative data for the management and conservation schemes applied for this species in the Aegean Sea.
机译：摘要：由于对生命历史和生态栖息地的了解有限，海水鱼类的种群结构通常是隐秘的。了解环境的稳定性是检索可能导致分散和人口习惯的结构模式的挑战。在本研究中，应用遗传和表型评估相结合的方法，以调查东地中海盆地爱琴海有背鲷（iObrada melanura）的种群结构。对6个微卫星基因座和15个形态特征的分析表明，爱琴海北部，南部和中部的population鲷个体不同。这些观察到的边界可能与爱琴海的不同海景有关，这表明海洋因素是马背鲷种群细分的重要压力源。基于个体的景观遗传方法和形态特征的多变量分析表明存在着与生境有关的sad鲷扩散潜力的局限性。分子遗传学和表型分析以及生活史特征为爱琴海对该物种的管理和保护计划提供了有用的信息数据。

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