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강도다리(Platichthys stellatus) 흑화발현에 미치는 조도의 영향

Influence of Light Intensity on the Blind-side Hypermelanosis in Starry Flounder Plathchthys stellatus

  • 김원진 (국립수산과학원 남동해수산연구소) ;
  • 신윤경 (국립수산과학원 남동해수산연구소)
  • 투고 : 2016.06.17
  • 심사 : 2016.07.26
  • 발행 : 2016.08.31

초록

To study the influence of light intensity on blind-side hypermelanosis of starry flounder, Platichthys stellatus, we compared growth, glucose, cortisol, ratio of malpigmented blind-side area, ambicolored fish ratio and expression of mch mRNA for 60 days in 0 lux(darkness) and 20 lux(low light density). The test was done in duplicate at 50 fish/tank with the selected ordinary juvenile flounder. The rearing was performed in FRP aquarium tanks ($H100cm{\times}L100cm{\times}W100cm$). Growth was higher in the 0 lux. The ratio of malpigmented blind-side area and ambicolored fish ratio were significantly higher at the 0 lux than at the 20 lux. The result suggests that 20 lux could inhibit the hypermelanosis. The expression level of MCH 1, 2 mRNA was significantly lower in 0 lux, indicating that MCH 1, 2 and light intensity are related to blind-side hypermelanosis of starry flounder.

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참고문헌

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