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首页> 外文期刊>North American Journal of Aquaculture >Tissue-specific copper concentrations in Red Drum after long-term exposure to sublethal levels of waterborne copper and a 21-day withdrawal.
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Tissue-specific copper concentrations in Red Drum after long-term exposure to sublethal levels of waterborne copper and a 21-day withdrawal.

机译：长期暴露于致死水平的水性铜中并撤离21天后，红鼓中组织特定的铜浓度。

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摘要

Juvenile Red Drum Sciaenops ocellatus were exposed to sublethal concentrations of waterborne copper (Cu; 0.25-0.35 mg/L) for 242 d using an ethanolamine chelated Cu compound as a prophylactic treatment to control ectoparasites in recirculating aquaculture systems. Skin, muscle, gill, liver, and intestine tissues were collected on days 1, 3, 5, 15, and 21 during the 21-d depuration. Liver and intestine tissues accumulated Cu at a rate that was strongly influenced by the environmental Cu load. Skin, gills, and muscle tissues did not accumulate substantial amounts of Cu despite its presence at therapeutic levels. The rank order of the Cu concentrations in the different tissues was as follows: intestine > liver > gills > skin > muscle. Predictive equations for tissue Cu concentrations ( micro g/g) relative to time of withdrawal (d) and waterborne Cu concentration (mg/L) were generated using trend analysis. The relationships between tissue Cu concentrations and time of withdrawal were significant, with all tissue Cu concentrations decreasing over time. The relationships between tissue Cu concentrations and waterborne Cu concentration were also significant, with elevated waterborne Cu concentrations resulting in higher tissue Cu concentrations, especially in the intestine, liver, and gill tissue samples. Red Drum cultured in recirculating aquaculture systems had lower (26-52- micro g/g) detectable Cu concentrations in muscle tissue than wild-caught Red Drum (414 micro g/g).
机译：使用乙醇胺螯合的铜化合物作为预防性处理来控制循环水产养殖系统中的幼小红鼓水蛇尾藻暴露于致死浓度的水性铜（Cu; 0.25-0.35 mg / L）中达242天。在21天净化期间的第1、3、5、15和21天收集皮肤，肌肉，腮，肝脏和肠组织。肝和肠组织中铜的积累速率受环境铜负荷的强烈影响。尽管铜，铜g处于治疗水平，但皮肤，腮和肌肉组织并未积聚大量铜。不同组织中Cu的浓度顺序如下：肠>肝>腮>皮肤>肌肉。使用趋势分析生成相对于撤药时间（d）和水性铜浓度（mg / L）的组织铜浓度（micro g / g）的预测方程。组织中铜的浓度与撤药时间之间的关系是显着的，所有组织中铜的浓度均随时间下降。组织中铜的浓度与水性铜的浓度之间的关系也很明显，水性铜的浓度升高会导致组织中铜的浓度较高，尤其是在肠，肝和腮组织样品中。在循环水产养殖系统中培养的红鼓在肌肉组织中的可检测到的铜浓度低于野生捕捞的红鼓（414微克/克）（26-52-微克/克）。

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