δ13C and δ15N values in scales of Micropterus salmoides largemouth bass as a freshwater environmental indicator.
δ13C and δ15N values in scales of Micropterus salmoides largemouth bass as a freshwater environmental indicator.
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DOI：
10.1002/rcm.5288
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发表时间：
2012-01
期刊：
影响因子：
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通讯作者：
O. Inamura;J. Zhang;M. Minagawa
中科院分区：
文献类型：
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作者：
O. Inamura;J. Zhang;M. Minagawa
我们已经调查了使用Micropterus salmoides大口黑鲈，这是一个顶级的捕食者在世界各地发现，作为水圈环境和食物链的指标的有效性。为此，我们使用了稳定的碳和氮同位素分析（SIA）。大口黑鲈采自日本富山县的8个水库和2个池塘。富山位于日本中部，由于海拔3000米，短距离内变化，以及丰富的水系，具有各种独特的地理环境。所有采样点的大口黑鲈脂肪提取肌肉的δ（13）C和δ（15）N平均值显示出较大的变异性，但在每个采样点只有较小的标准差。大口黑鲈的同位素比值反映了每个调查的水圈环境和食物链的特点。相关性非常高（δ（13）C：Y（鳞片）= 0.96 X（肌肉）+ 1.58，R（2）= 0.98，δ（15）N：大口黑鲈鳞片与去脂肌肉的SIA值呈线性相关（Y（鳞片）= 0.92 X（肌肉）-1.15，R（2）= 0.95），这表明，更容易分析的尺度是有用的SIA样品的监测和比较的水圈环境在世界各地。
We have investigated the effectiveness of using the Micropterus salmoides largemouth bass, which is a top predator found throughout the world, as the index of a hydrosphere environment and its food chain. To this end, we used stable carbon and nitrogen isotope analysis (SIA). Largemouth bass were collected from eight dam reservoirs and two ponds in Toyama Prefecture, Japan. Toyama is located in central Japan and features a variety of distinct geographical environments, a result of the 3000-m elevation that changes over short distances, and abundant water systems. The mean δ(13)C and δ(15)N values for the lipid-extracted muscle of largemouth bass from all sampling locations showed large variability, but there were only small standard deviations at each sampling location. The isotope ratios for largemouth bass express the characteristics of each investigated hydrosphere environment and food chain. A very high correlation (δ(13)C: Y(scale) = 0.96 X(muscle) + 1.58, R(2) = 0.98, δ(15)N: Y(scale) = 0.92 X(muscle) - 1.15, R(2) = 0.95) of SIA values was found between largemouth bass scales and lipid-extracted muscles, which suggests that the more easily analyzed scales are useful as SIA samples for the monitoring and comparison of hydrosphere environments throughout the world.