Production of Oikopleura longicauda (Tunicata: Appendicularia) in Toyama Bay, southern Japan Sea |
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Authors: | Tomita Mika; Ikeda Tsutomu; Shiga Naonobu |
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Institution: | Biological Oceanography Laboratory, Faculty of Fisheries, Hokkaido University, 3-1-1 Minatomachi, Hakodate 041-0821, Japan |
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Abstract: | Oikopleura longicauda occurred throughout the year in ToyamaBay, southern Japan Sea, and analysis of its size compositionand maturity revealed that reproduction was continuous overtheyear. Somatic growth production (Pg) varied with season from0.03 to 103 mg carbon (C) m2day1 (annual Pg 4.5g C m2), and house production (Pe) from 0.11 to 266 mgC m2 day1 (annualPe 11.3 g C m2). The annualPg/B ratio was 176. Compared with production data of some predominantzooplankton species in Toyama Bay, it is suggested that despitetheir smaller biomass, appendicularians are an important secondaryproducer. |
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