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›› 2014, Vol. 36 ›› Issue (1): 1-6.

• 论文与报告 •    下一篇

福州地区发现的一种桃花水母的分类鉴定

杨小强   

  1. 福州市海洋与渔业技术中心
  • 收稿日期:2013-10-30 修回日期:2013-11-12 出版日期:2014-02-25 发布日期:2014-03-10
  • 通讯作者: 杨小强

Classification and Identification of a freshwater jellyfish, Craspedacusta sowerbyi, in Fuzhou

Xiao-qiang YANG   

  • Received:2013-10-30 Revised:2013-11-12 Online:2014-02-25 Published:2014-03-10
  • Contact: Xiao-qiang YANG

摘要: 采用形态鉴定和18S rDNA基因序列分析技术对采自福州一金鱼养殖场蓄水池中的桃花水母(freshwater jellyfish)进行分类鉴定。结果显示: 样品的平衡囊管状,主辐触手较其它触手长,刺丝囊疣为乳突状呈螺旋状或环状排列,形态鉴别特征与己知的索氏桃花水母及其亚种相同;触手密集度11.06±0.71,平衡囊密集度5.66±0.43,与索氏桃花水母也最相近;样品18S rDNA序列与GenBank中索氏桃花水母有99 %的相似性。因此,经鉴定本次在福州地区发现的桃花水母为索氏桃花水母(Craspedacusta sowerbyi Lankester,1880)。

关键词: 桃花水母, 索氏桃花水母, 福州, 形态鉴别, 18S rDNA, freshwater jellyfish, Craspedacusta sowerbyi, Fuzhou, morphological characteristic, 18S rDNA

Abstract: Craspedacusta species was a precious freshwater jellyfish, and was found sporadically in the world. As the parameters of morphological characteristic were always uncertain, the classification of the freshwater jellyfish had been still confused. A lot of freshwater jellyfish were found in a reservoir from a goldfish aquacultural farm in Fuzhou, Fujian Province, during September in 2013. Because the 18S rDNA molecular marker was important for the biological identification of freshwater jellyfish, morphological characteristic as well as 18S rDNA sequence analysis were used for the classification and identification. Results showed that the samples were with tubular statocyst, relatively long per-radial tentacle and nipple-like stenotele of bostrychoid or annular arrangement together with the same morphological characteristic as C.sowerbyi and its subspecies; The density of tentacles was 11.06±0.71, and the density of statocysts was 5.66±0.43, which were also consistent with the C.sowerbyi; The consensus sequence of 18S rDNA gene of samples and C.sowerbyi in GenBank revealed 99 % of identity. Therefore, the freshwater jellyfish isolated in Fuzhou was identified as C.sowerbyi Lankester, 1880.

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