Change of egg color with egg development of the Japanese endangered freshwater crayfish Cambaroides japonicus under laboratory condition

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  • 室内水槽におけるニホンザリガニの卵発生に伴う卵色の変化
  • シツナイ スイソウ ニ オケル ニホンザリガニ ノ タマゴ ハッセイ ニ トモナウ タマゴイロ ノ ヘンカ

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Abstract

A natural habitat of the freshwater crayfish Cambaroides japonicus (De Haan, 1841) in Odate City, Akita Prefecture, Japan is designated as a natural monument by the Japanese government. Change of egg color of C. japonicus with the development of their eggs were observed in aquaria in Oga Aquarium GAO in Akita Prefecture, Japan. The egg color was dark brown immediately after spawning, then the color changed to black, and eyed eggs appeared before egg hatching.

Journal

  • Hinai

    Hinai 15 (0), 7-11, 2021

    Odate City Museum

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