Larval Culture of Pacific Cod Using Net-cages in the Sea with Zooplankton

DOI JASI 1 Citations 5 References
  • ARAI Daisuke
    Notojima Station, National Center for Stock Enhancement, Fisheries Rescarch Agency
  • TOMODA Tsutomu
    Notojima Station, National Center for Stock Enhancement, Fisheries Rescarch Agency
  • MORIOKA Taizo
    Akkeshi Station, National Center for Stock Enhancement, Fisheries Research Agency

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  • 天然プランクトンを利用した海上網生簀によるマダラ　Ｇａｄｕｓ　ｍａｃｒｏｃｅｐｈａｌｕｓ　仔稚魚の飼育

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Abstract

We elucidated the growth trajectory of Pacific cod (Gadus macrocephalus) larvae and juveniles reared in sea net cages with zooplankton-attracting lamps in order to develop effective techniques for artificial raising of this fish. They were stored at 50 ind./kl in 20-m3 cages. The density of zooplankton ranged from 64 to 500×104 ind./night/cage. Cod larvae and juveniles fed mainly on cladocerans and copepods, the dominant species in the net cages. Mean total length reached 51 mm on 21 April, the same as that of wild juveniles in Nanao Bay. In contrast, juveniles were smaller in a land-based tank on 21 April.

Journal

  • Aquaculture Science

    Aquaculture Science 54 (3), 409-410, 2006

    Japanese Society for Aquaculture Science

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