Reproductive characteristics of the lobate ctenophore Bolinopsis mikado (Moser)

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The egg production rate (EPR) of the lobate ctenophore Bolinopsis mikado was measured in summer, fall, and winter using field-collected animals whose total lengths (TL) ranged from 17 mm to 73 mm. The TL of spawning B. mikado ranged from 22 mm to 73 mm, indicating that B. mikado matures at ca. 20 mm TL. Because the percentage of spawning individuals to the total ranged from 50% to 100%, B. mikado probably spawned intermittently or daily in Tokyo Bay. Spawning individuals were found even in December and January. Bolinopsis mikado seemed to reproduce continuously in Tokyo Bay throughout the year. A multiple regression analysis between the EPR and ctenophore body size and water temperature suggested that 21.5% of EPR can be explained by these variables. The EPR increased linearly with ctenophore size, i.e. the wet-weight specific EPR (EPR*) was independent of the body size. The relationship between the EPR* and water temperature was equivalent to a Q10 value of 4.7, and was considerably higher than that of the respiration, predation, and growth rates, which may lead to quick population growth and mass occurrence of B. mikado during summer and fall in coastal waters.

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  • Plankton & benthos research  

    Plankton & benthos research 3(2), 72-77, 2008-05-01 

    日本プランクトン学会、日本ベントス学会

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各種コード

  • NII論文ID(NAID)
    10021072737
  • 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
    9530001
  • 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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