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首页> 外文期刊>Journal of Fish Biology >Genetic and morphometric differences demonstrate fine-scale population substructure of the yellow perch Perca flavescens: need for redefined management units
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Genetic and morphometric differences demonstrate fine-scale population substructure of the yellow perch Perca flavescens: need for redefined management units

机译：遗传和形态学差异证明了黄鲈Perca flavescens的小规模种群亚结构：需要重新定义管理单位

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摘要

Whole-body morphometrics and 15 nuclear DNA microsatellite loci were analysed for 158 Perca flavescens collected during the spawning season from four spawning locations in central Lake Erie, two along the northern shore and two along the southern shore, to evaluate fine-scale variation (spanning 17-94km). Results showed significant morphological and genetic differences among P. flavescens from the four locations. The magnitudes of differences were unrelated to geographic distance, demonstrating spatially heterogeneous levels of genetic divergence. These results linked morphometric and genetic variation, showing a discontinuity of scale between currently defined management units and population structure of P. flavescens in Lake Erie, and support that P. flavescens might exist as one or more metapopulations. Findings demonstrate the value of using complementary techniques for evaluating population structure.
机译：分析了产卵季节在伊利湖中部四个产卵地点，北部沿岸的两个和南部沿岸的两个产卵地点收集的158个Perca flavescens的整体形态学和15个核DNA微卫星基因座，以评估细尺度变化（跨度17-94公里）。结果表明，在四个地点的黄萎病菌之间存在明显的形态和遗传差异。差异的大小与地理距离无关，表明遗传差异的空间异质性水平。这些结果联系了形态计量学和遗传变异，显示了伊利湖当前定义的管理单位与黄萎病菌种群结构之间规模的不连续性，并支持黄萎病菌可能作为一个或多个亚种群存在。研究结果证明了使用互补技术评估人口结构的价值。

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