Reproductive Behavior of Pacific Cod in Captivity

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The reproductive behavior of Pacific cod (Gadus macrocephalus) was examined durincaptive experiments. The captive cod spawned demersal and slightly adhesive eggs, which dispersed and settled onthe tank bottom.Ripe males and females did not display the ventral mounting behavior typically displayed in other gadid fishes during spawning. Neither sound production nor aggressive behavior occurred during the breeding period. The female released approximately all of her ripe eggs in a singlespawning, which lasted less than 20 seconds. Spawning involved one female and one or more males inmidwater of the tank. Just after release of eggs by a female, one or a few males followed the female andspread sperm on the eggs using tail beats. The eggs and milt slowly sank to the bottom.The spawning behavior of Pacific cod differed from the single-pair spawning characterized by ventral mountingand multiple spawning over a several day period seen in walleye pollock and Atlanticgadid species.

The reproductive behavior of Pacific cod (Gadus macrocephalus) was examined durincaptive experiments. The captive cod spawned demersal and slightly adhesive eggs, which dispersed and settled onthe tank bottom.Ripe males and females did not display the ventral mounting behavior typically displayed in other gadid fishes during spawning. Neither sound production nor aggressive behavior occurred during the breeding period. The female released approximately all of her ripe eggs in a singlespawning, which lasted less than 20 seconds. Spawning involved one female and one or more males inmidwater of the tank. Just after release of eggs by a female, one or a few males followed the female andspread sperm on the eggs using tail beats. The eggs and milt slowly sank to the bottom. The spawning behavior of Pacific cod differed from the single-pair spawning characterized by ventral mountingand multiple spawning over a several day period seen in walleye pollock and Atlanticgadid species.

収録刊行物

  • Fisheries science : FS  

    Fisheries science : FS 62(2), 222-228, 1996 

    公益社団法人 日本水産学会

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各種コード

  • NII論文ID(NAID)
    10004865479
  • NII書誌ID(NCID)
    AA10993718
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09199268
  • NDL 記事登録ID
    3951194
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z54-H592
  • データ提供元
    CJP書誌  CJP引用  NDL  IR  J-STAGE 
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