Abstract
Light is a key environmental factor that influences the growth, culture and survival of aquatic organisms. This study examined the effects of different light qualities (red, orange, white, blue and green light) and intensities (5 μmol m−2 s−1, 15 μmol m−2 s−1 and 40 μmol m−2 s−1) on the hatching and metamorphosis of larva of Haliotis discus hannai Ino and the growth and survival of juveniles. It was found that under blue and green light, the hatching success rate and metamorphosis of larva were significantly higher than those for any other light quality (P 0.05). Therefore, selecting blue and green light and controlling the light intensity to 5–15 μmol m−2 s−1 during fingerling reproduction of abalone should increase the hatching success rate of larva and the yield per water body.
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