High density aggregations of the Aurelia sp.1 ephyrae in a Chinese coastal aquaculture pond

High density aggregations of the Aurelia sp.1 ephyrae in a Chinese coastal aquaculture pond
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中国沿海水产养殖池塘中 Aurelia sp.1 蝶藻的高密度聚集

DOI:
10.1080/14634988.2017.1362627
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发表时间:
2017-08
影响因子:
0.8
通讯作者:
Wang Lei
Wang Lei
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Dong Zhijun;Sun Tingting;Liu Qingqing;Wang Lei

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月水母(奥雷利亚sp.1)水母水华在渤海和黄海的港口和沿岸沃茨均有发生。然而,奥雷利亚sp.1的发生和分布是相对未知的。2015年4月,在中国北方的石岛沿海养殖池塘中首次发现大量钵水母。根据形态特征,在养殖池塘中收集的浮藻大多与在大西洋法国沃茨中收集的浮藻相似,鉴定为奥雷利亚属1种。这进一步证实了线粒体DNA的16S区的系统发育分析的样品的ephyphylactic。令人惊讶的是,奥雷利亚sp.1海蜇的水华在养殖池塘的表层水体中形成了明显的类似"赤潮"的微红色。在养殖池塘的红色区域中的平均密度估计为7.38 × 106个个体m − 3。海水温度和风是奥雷利亚sp.1水华形成的关键因子。最后,我们推测,人工结构可能会为水螅体提供更多的基质,并促进中国水产养殖池塘中的水母水华。
Blooms of the Moon Jellyfish Aurelia sp.1 medusae have occurred in the harbors and coastal waters of the Bohai and Yellow Seas. However, the occurrence and distribution of Aurelia sp.1 ephyrae is relatively unknown. Mass occurrence of scyphozoan ephyrae in a coastal aquaculture pond (Shidao) in northern China was first recorded in April 2015. Based on morphological characteristics, the ephyrae collected in the aquaculture pond were mostly similar to the ephyrae collected in Atlantic French waters, which were identified as Aurelia sp.1. This was further confirmed by phylogenetic analyses of the mtDNA 16S regions of the sampled ephyrae. Surprisingly, the blooms of Aurelia sp.1 ephyrae formed an obvious reddish color similar to “red tides” in the surface water of the aquaculture pond. The mean density of ephyrae in the reddish color zone of the aquaculture pond was estimated to be 7.38 × 106 individuals m−3. Seawater temperature and wind are the key factors for the formation of Aurelia sp.1 ephyra bloom in the aquaculture pond. Finally, we speculate that artificial structures may provide more substrates for the polyps and enhance the Jellyfish blooms in Chinese aquaculture ponds.
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