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First record of wild ephyrae of the giant jellyfish Nemopilema nomurai

文献类型: 外文期刊

作者: Toyokawa, Masaya 1 ; Shibata, Masashi 1 ; Cheng, Jia-Hua 2 ; Li, Hui-Yu 2 ; Ling, Jian-Zhong 2 ; Lin, Nan 2 ; Liu, Zun 1 ;

作者机构: 1.Fisheries Res Agcy, Seikai Natl Fisheries Res Inst, Nagasaki 8512213, Japan

2.Chinese Acad Fisheries Sci, E China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

3.Fisheries Res Agcy, Natl Res Inst Fisheries Sci, Yokohama, Kanagawa 2368648, Japan

关键词: Cnidaria;East China Sea;Jellyfish bloom;Life history;Nomura’s jellyfish;Rhizostomeae;Yellow Sea

期刊名称:FISHERIES SCIENCE ( 影响因子:1.617; 五年影响因子:1.531 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: To understand the causes and to control harmful blooms of the giant Nomura’s jellyfish Nemopilema nomurai, it is essential to study the seed population (benthic polyps) and its environment. To locate the habitat of polyps, the first step is to find ephyrae shortly after detachment from polyps. We found five ephyrae of N. nomurai of 1–2 mm diameter for the first time from plankton samples collected at two sites, one specimen in the northwestern East China Sea (32°12.3′N, 123°12′E) and the other four specimens in the Yellow Sea (34°05.8′N, 121°50.0′E), on 22 and 26 May 2011. From the developmental state and water temperature of ca. 16 °C at the sampling stations, the collected ephyrae were estimated to have detached from polyps in early May of the year. Considering the increase of water temperature which induces strobilation and the direction of transport in the northwestern East China Sea and in the Yellow Sea, the locality of the seed polyps of the present specimens is probably the sea-floor close to the Changjiang River mouth and along the coast of Jiangsu Province.

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