• Title/Summary/Keyword: Scaphechinus brevis

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The Effects of Temperature on Biological Evaluation of Seawater with Seaurchins (성게를 이용한 해수의 생물학적평가에 있어 온도가 미치는 영향)

  • 유춘만;조기안
    • Journal of Environmental Science International
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    • v.8 no.2
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    • pp.161-164
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    • 1999
  • This study was done to research the effects of temperature on biological evaluation of seawater quality using gametes, embryos and early development system of seaurchin species, Hemicentrotus pulcherrimus, Anthocidaris crassispina and Scaphechinus brevis. As the result of performing effects of temperature on early embryo development, the conditions of appropriate temperature on formation of normal pluteus were appropriate at 5-16$^{\circ}C$ for H. pulcherrimus, 8-2$0^{\circ}C$ for A. crassispina, 12-2$0^{\circ}C$ for S. brevis. The conditions of optimum temperature on biological evaluation were 16$^{\circ}C$ for H. pulcherrimus and 2$0^{\circ}C$ for A. crassispina and S. brevis.

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The Effects of pH on Early Embryo Development of Sea Urchins (수소이온농도(pH)가 성게의 초기 배 발생에 미치는 영양)

  • 유춘만
    • Journal of Environmental Health Sciences
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    • v.30 no.2
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    • pp.104-107
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    • 2004
  • This study was conducted to evaluate the effects of pH, using gametes, embryos and early development system of three sea urchins species, Hemicentrotus pulcherrimus, Anthocidaris crassispina and Scaphechinus brevis. As the result of performing effects of pH on early embryo development, the conditions of appropriate pH on formation of normal pluteus were pH 7.0-8.0 for H. pulcherrimus, A. crassispina and S. brevis. Otherwise, the conditions of pH 5.0, pH 6.0, pH 9.0 and pH 10.0 damaged the development of early embryos of each testing animal moderately or strongly.