Co-occurrence of white shrimp, Litopenaeus vannamei, mortalities and microcystin toxin in a southeastern USA shrimp facility
Co-occurrence of white shrimp, Litopenaeus vannamei, mortalities and microcystin toxin in a southeastern USA shrimp facility
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DOI：
10.1016/j.aquaculture.2006.08.037
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发表时间：
2006-12
期刊：
影响因子：
4.5
通讯作者：
P. Zimba;A. Camus;Elle H. Allen;J. Burkholder
中科院分区：
文献类型：
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作者：
P. Zimba;A. Camus;Elle H. Allen;J. Burkholder
已知各种淡水和海藻毒素会影响植物、鱼类、哺乳动物和无脊椎动物。在德克萨斯州白虾养殖池塘最近发生的死亡事件中，对水和虾组织样本进行了蓝藻毒素分析，发现含有微囊藻毒素-LR。蓝原核生物在受影响池塘水体中的浮游植物群落中占主导地位，尤其是铜绿微囊藻和鱼腥藻。受影响池塘的水样也含有高水平的微囊藻毒素-LR(45μg/L)，而邻近池塘的水样中有硅藻-绿藻组合，没有可检测到的毒素。来自受影响池塘的铜绿假单藻分离株产生微囊藻毒素-LR。用高效液相色谱法测定死虾肝胰腺中游离微囊藻毒素-LR的含量为55μg/g总虾重，而邻近池塘无虾死亡的对虾肝胰腺中未检测到毒素。肌肉毒素浓度低于0.1gμg/g。
Various freshwater and marine algal toxins are known to affect plants, fishes, mammals, and invertebrates. During recent mortality events in Texas white shrimp aquaculture ponds, water and shrimp tissue samples were analyzed for cyanobacterial toxins and found to contain microcystin-LR. Cyanoprokaryota dominated the phytoplankton assemblage in water from the affected pond, particularly Microcystis aeruginosa and Anabaena sp. Water samples from the affected pond also contained high levels of microcystin-LR (45 μg/l), whereas adjacent ponds had a diatom-green algal assemblage and no measurable toxin. Unialgal isolates of M. aeruginosa from the affected pond produced microcystin-LR. Free microcystin-LR concentrations in dead shrimp hepatopancreas determined by HPLC were 55 μg/g total shrimp weight, whereas shrimp hepatopancreas from the adjacent pond without shrimp mortalities had no measurable toxin. Muscle toxin concentration was below 0.1 μg/g.