ABSTRACT Aurelia is a jellyfish genus common in coastal and estuarine habitats, that are typically affected by human pressures such as heavy metals contamination. Mercury is one of the most dangerous due to its high toxicity, persistence and bioaccumulation. In this paper, we tested for the first time the independent and combined effects of a level of mercury allowable by European regulation in force and hyposalinity on the asexual reproduction of Aurelia sp. polyps, mirroring a realistic scenario. Both mercury (0.07 µg/L, Maximum Allowable Concentration) and salinity (18 and 23 PSU) and the combination of the two factors stimulated the asexual reproduction increasing the number of polyps and buds during the 41 days of experiments. The increment of the asexual reproduction and the absence of suffering and mortality suggest that levels of mercury below the concentration fixed by the law and hyposalinity conditions could promote jellyfish proliferations, according to the hormesis hypothesis.

中文翻译：

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环境因素对 Aurelia sp. 无性繁殖的短期影响。息肉

摘要 Aurelia 是一种常见于沿海和河口栖息地的水母属，通常受到重金属污染等人类压力的影响。由于其高毒性、持久性和生物累积性，汞是最危险的物质之一。在本文中，我们首次测试了欧洲现行法规允许的汞含量和低盐度对 Aurelia sp. 无性繁殖的独立和综合影响。息肉，反映现实情况。在 41 天的实验中，汞（0.07 µg/L，最大允许浓度）和盐度（18 和 23 PSU）以及这两个因素的组合刺激了无性繁殖，增加了息肉和芽的数量。