Comparison of life cycles and morphology of Cyanea nozakii and other scyphozoans

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著者

    • Dong Jing DONG JING
    • Liaoning Ocean and Fisheries Science Research Institute, Liaoning Open Laboratory of Applied Marine Biotechnology
    • Sun Ming SUN MING
    • Liaoning Ocean and Fisheries Science Research Institute, Liaoning Open Laboratory of Applied Marine Biotechnology
    • Wang Bin [他] WANG BIN
    • Liaoning Ocean and Fisheries Science Research Institute, Liaoning Open Laboratory of Applied Marine Biotechnology
    • LIU HAIYING
    • School of Marine Engineering, Dalian Fisheries University

抄録

Mass aggregations of the giant jellyfish <i>Cyanea nozakii</i> have occurred in China since the end of the 20th century. In particular, <i>C. nozakii</i> bloomed abnormally in Liaodong Bay during July and August of 2004 and the catch of edible <i>Rhopilema esculentum</i> was greatly reduced. In order to clarify the causes leading to mass occurrences of <i>C. nozakii</i>, the reproductive cycle and morphological characters of this species were compared with other common jellyfish species using data from both laboratory–rearing experiments and field investigations. The results showed that, in particular, settling of planulae and asexual reproductive strategies of scyphystomae made <i>C. nozakii</i> more capable of thriving under unfavorable physical conditions than <i>R. esculentum</i>. The ephyrae of <i>Nemopilema nomurai</i>, <i>R. esculentum</i>, <i>C. nozakii</i>, <i>Aurelia aurita</i>, <i>Rhopilema hispidum</i> and <i>Rhopilema asamushi</i> were differentiated by different shapes of lappets, rhopalar clefts, gastric filaments and nematocyst batteries. In addition, the life cycle of <i>C. nozakii</i> was compared with earlier reports on the life cycle of <i>Cyanea capillata</i>, <i>R. esculentum</i>, <i>Rhizostoma pulmo</i>, <i>Stomolophus meleagris</i> and <i>N. nomurai</i>, and the morphology of adult <i>C. nozakii</i> was compared and contrasted with species of the genus <i>Cyanea</i> (<i>C. capillata</i>, <i>C. ferruginea</i> and <i>C. purpurea</i>).

収録刊行物

  • Plankton & benthos research  

    Plankton & benthos research 3, 118-124, 2008-05-01 

    The Plankton Society of Japan, The Japanese Association of Benthology

参考文献:  22件

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各種コード

  • NII論文ID(NAID)
    10021072933
  • NII書誌ID(NCID)
    AA12130745
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    18808247
  • NDL 記事登録ID
    9533634
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z54-J424
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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