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The relationship between Pseudo-nitzschia (Peragallo) and domoic acid in Scottish shellfish

机译：伪贝氏菌（Peragallo）与苏格兰贝类中海藻酸的关系

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摘要

The diatom genus Pseudo-nitzschia (Peragallo) associated with the production of domoic acid (DA), the toxin reposnsible for amnesic shellfish poisoning, is abundant in Scottish waters. A two year study examined the relationship between Pseudo-nitzschia cells in the water column and DA concentration in blue mussels (Mytilus edulis) at two sites, and king scallops (Pecten maximus) at one site. The rate of DA uptake and depuration differed greatly between the two species with M. edulis whole tissue accumulating and depurating 7 mu g g(-1) (now expressed as mg kg(-1)) per week. In contrast, it took 12 weeks for DA to depurate from P. maximus gonad tissue from a concentration of 68 mu g g(-1) (now mg kg(-1)) to <20 mu g g(-1) (now mg kg(-1)). The DA depuration rate from P. maximus whole tissue was <5% per week during both years of the study. Correlations between the Pseudo-nitzschia cell densities and toxin concentrations were weak to moderate for M. edulis and weak for P. maximus. Seasonal diversity on a species level was observed within the Pseudo-nitzschia genus at both sites with more DA toxicity associated with summer/autumn Pseudo-nitzschia blooms when P. australis was observed in phytoplankton samples. This study reveals the marked difference in DA uptake and depuration in two shellfish species of commercial importance in Scotland. The use of these shellfish species to act as a proxy for DA in the environment still requires investigation. Crown Copyright (C) 2017 Published by Elsevier B.V. All rights reserved.
机译：苏格兰水域中与硅藻酸（DA）的产生有关的硅藻属假性尼兹菌（Peragallo），后者是导致遗忘性贝类中毒的毒素。一项为期两年的研究检查了水柱中的假性奈瑟菌细胞与两个位置的蓝贻贝（Mytilus edulis）和最大的扇贝（Pecten maximus）的DA浓度之间的关系。两种物种之间的DA摄取和净化速率差异很大，而蓝靛果整个组织每周累积和净化7μg g（-1）（现在表示为mg kg（-1））。相比之下，DA从最大的性腺性腺组织中纯化出来的浓度从68 mu gg（-1）（现在为mg kg（-1））降至<20 mu gg（-1）（现在为mg kg）需要12周的时间。 （-1））。在这两年的研究中，来自最大体育假单胞菌整个组织的DA净化率<5％。假性念珠菌细胞密度与毒素浓度之间的相关性对于食用支原体微弱至中等，而对于最大疟原虫微弱。当在浮游植物样品中观察到澳大利亚假单胞菌时，在两个地点的假拟南芥属中均观察到物种水平的季节性多样性，与夏季/秋季相关的DA毒性更大。这项研究揭示了在苏格兰具有商业重要性的两种贝类中，DA摄取和净化的显着差异。使用这些贝类作为环境中DA的代用品仍需进行调查。官方版权（C）2017，由Elsevier B.V.保留所有权利。

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  • 来源
    《Harmful Algae》 |2017年第3期|193-202|共10页
  • 作者

    Bresnan E.; Fryer R. J.; Fraser S.; Smith N.; Stobo L.; Brown N.; Turrell E.;

  • 作者单位

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

    Marine Scotland Sci, Marine Lab, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland;

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  • 正文语种 eng
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  • 关键词

    Pseudo-nitzschia; Domoic acid; Mytilus edulis; Pecten maximus; Scotland;

    机译：假性紫薇;海藻酸;可食的Mytilus;最大的果胶;苏格兰;

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