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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Short-term effects of the heavy metals, Silver and copper, on polyps of the common jellyfish, Aurelia aurita
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Short-term effects of the heavy metals, Silver and copper, on polyps of the common jellyfish, Aurelia aurita

机译：重金属银和铜对普通水母Aurelia aurita息肉的短期影响

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Heavy metals are prominent in the coastal marine environment, especially copper due to its use in anti-fouling paints and, increasingly, silver due to its use in manufacturing processes and hygiene products. Aurelia aurita is a common and widespread species of scyphozoan jellyfish found in many coastal habitats, including those impacted by human activities. While A aurita is known to be highly tolerant of a wide range of environmental conditions including large variations in temperature, salinity and dissolved oxygen, nothing is known about its tolerance to heavy metal pollution. This study examined the independent and interactive effects of copper and silver on aspects of polyp condition including budding, strobilation, deformities and mortality. The results show that 200 μg Cu l~(-1) is above the polyps' tolerance for this metal and leads to rapid mortality. When this treatment was excluded, silver had the greatest impact on polyp condition. All metals generally had a greater impact on polyp condition at higher concentrations. Combination treatments had a lesser effect than single-metal treatments, suggesting an antagonistic relationship. Copper reduced the detrimental impacts of silver when present at a high enough concentration. Despite reactions to the metals, mortality and deformity responses generally diminished over time. With budding being proportionally higher than mortality, and increasing over time, it is suggested that sub-lethal concentrations of metals could actually lead to population growth over time by the process of hormesis.
机译：重金属在沿海海洋环境中占主要地位，尤其是铜，由于其用于防污涂料中，而银，由于其在制造过程和卫生产品中的使用而越来越多。极光北极光藻是在许多沿海栖息地（包括受人类活动影响的栖息地）中发现的常见的海生鞘脂水母。众所周知，极光对各种环境条件具有高度的耐受性，包括温度，盐度和溶解氧的较大变化，但对其耐受重金属的污染却一无所知。这项研究检查了铜和银对息肉状况的独立和交互作用，包括萌芽，疏tro，畸形和死亡率。结果表明200μgCu l〜（-1）高于息肉对该金属的耐受性，并导致快速死亡。如果排除这种治疗方法，银对息肉状况的影响最大。通常，所有金属在较高浓度下对息肉状况的影响更大。联合治疗的效果要比单金属治疗小，表明存在拮抗作用。铜以足够高的浓度存在时，可以减少银的有害影响。尽管对金属有反应，但是随着时间的流逝，死亡率和变形反应通常会降低。随着出苗率成比例地高于死亡率，并且随着时间的推移而增加，这表明亚致死浓度的金属实际上可能会由于兴奋作用而随着时间的推移导致种群增长。

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