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Polyps of the Jellyfish Aurelia aurita Are Unaffected by Chronic Exposure to a Combination of Pesticides.
Environmental Toxicology and Chemistry ( IF 3.6 ) Pub Date : 2020-05-16 , DOI: 10.1002/etc.4750 Carolina Olguín-Jacobson 1 , Kylie A Pitt 1 , Anthony R Carroll 2 , Steve D Melvin 1
Environmental Toxicology and Chemistry ( IF 3.6 ) Pub Date : 2020-05-16 , DOI: 10.1002/etc.4750 Carolina Olguín-Jacobson 1 , Kylie A Pitt 1 , Anthony R Carroll 2 , Steve D Melvin 1
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Pesticides are a major contaminant in coastal waters and can cause adverse effects in marine invertebrates such as jellyfish. Most studies have investigated short‐term responses of organisms to unrealistically high concentrations of pesticides; however, chronic exposure to persistent low concentrations, which are more likely to occur in the environment, are rarely analyzed. We tested the response of polyps of the moon jellyfish Aurelia aurita to environmental concentrations of the herbicide atrazine and the insecticide chlorpyrifos, individually and in combination, over 9 wk. We hypothesized that exposure to individual pesticides would reduce rates of asexual reproduction and alter polyps' metabolite profiles, and that the results would be more severe when polyps were exposed to the combined pesticides. Polyps survived and reproduced (through budding) in all treatments, and no differences among treatments were observed. Proton nuclear magnetic resonance spectroscopy revealed no difference in profiles of polar metabolites of polyps exposed to the individual or combined pesticides. Our results suggest that A. aurita polyps are unaffected by chronic exposure to atrazine and chlorpyrifos at concentrations recommended as being protective by current Australian water quality guidelines. Environ Toxicol Chem 2020;39:1685–1692. © 2020 SETAC
中文翻译：
水母Aurelia aurita的息肉不受长期暴露于多种农药的影响。
农药是沿海水域的主要污染物，可能对水母等海洋无脊椎动物造成不利影响。大多数研究调查了生物体对不切实际的高浓度农药的短期反应。但是，很少分析长期暴露于环境中持续发生的持续低浓度的情况。我们测试了月水母Aurelia aurita息肉的反应在超过9周的时间里，单独或组合使用时，使除草剂at去津和杀虫剂毒死environmental的环境浓度达到最高浓度。我们假设暴露于单个农药会降低无性繁殖的速度并改变息肉的代谢产物谱，并且当息肉暴露于联合农药时，结果会更严重。息肉在所有处理中均存活并繁殖（通过出芽），并且未观察到处理之间的差异。质子核磁共振波谱显示暴露于单个或组合农药的息肉极性代谢产物的分布无差异。我们的研究结果表明，一。奥里塔长期接触阿特拉津和毒死rif的浓度不会影响息肉，根据澳大利亚现行水质指南的建议，该浓度可起到保护作用。环境毒性化学2020； 39：1685–1692。©2020 SETAC
更新日期：2020-05-16
中文翻译：
水母Aurelia aurita的息肉不受长期暴露于多种农药的影响。
农药是沿海水域的主要污染物，可能对水母等海洋无脊椎动物造成不利影响。大多数研究调查了生物体对不切实际的高浓度农药的短期反应。但是，很少分析长期暴露于环境中持续发生的持续低浓度的情况。我们测试了月水母Aurelia aurita息肉的反应在超过9周的时间里，单独或组合使用时，使除草剂at去津和杀虫剂毒死environmental的环境浓度达到最高浓度。我们假设暴露于单个农药会降低无性繁殖的速度并改变息肉的代谢产物谱，并且当息肉暴露于联合农药时，结果会更严重。息肉在所有处理中均存活并繁殖（通过出芽），并且未观察到处理之间的差异。质子核磁共振波谱显示暴露于单个或组合农药的息肉极性代谢产物的分布无差异。我们的研究结果表明，一。奥里塔长期接触阿特拉津和毒死rif的浓度不会影响息肉，根据澳大利亚现行水质指南的建议，该浓度可起到保护作用。环境毒性化学2020； 39：1685–1692。©2020 SETAC
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