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首页> 外文期刊>Aquatic Sciences >Does fish scale morphology allow the identification of populations at a local scale? A case study for rostrum dace Leuciscus leuciscus burdigalensis in River Viaur (SW France)
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Does fish scale morphology allow the identification of populations at a local scale? A case study for rostrum dace Leuciscus leuciscus burdigalensis in River Viaur (SW France)

机译：鱼鳞的形态是否可以识别当地规模的种群？ Viaur河（法国西南部）以讲台为例的Leuciscus leuciscus burdigalensis为例

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摘要

The aim of the study was to investigate if scale morphology could be used to discriminate fish populations at a local scale. To this aim, 168 rostrum dace (Leuciscus leuciscus burdigalensis) were collected at 3 sites in the River Viaur (SW France), distributed along 82 Km of stream. Seventy-one measurements were taken from scales: 2 shape factors and 69 Fourier coefficients. A stepwise discriminant analysis revealed that fish from the 3 sites showed morphological differences (p < 0.001), with an average of 75.6% correct discrimination of the scales (65.5% after the cross-validation procedure). These results reveal that scale morphology can detect spatial structure in fish populations at a fine scale, which has implications for riverine fish conservation.
机译：这项研究的目的是调查是否可以使用规模形态学来区分当地规模的鱼类种群。为此，在Viaur河（法国西南部）的3个地点收集了168个讲台蝇（Leuciscus leuciscus burdigalensis），沿82 Km的溪流分布。从量表中进行了71次测量：2个形状因子和69个傅立叶系数。逐步判别分析显示，这3个地点的鱼表现出形态差异（p <0.001），平均正确区分鳞片为75.6％（交叉验证后为65.5％）。这些结果表明，鳞片形态学可以很好地检测鱼类种群的空间结构，这对河流鱼类的保护具有重要意义。

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