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KMID : 0894520110150020121
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Development & Reproduction
2011 Volume.15 No. 2 p.121 ~ p.131
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Egg Development and Effects of Livefood and Thyroid Hormone on the Amphiprion melanopus Larvae
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Noh Gyeong-Eon
Roh Sum
Min Byung-Hwa
Chang Young-Jin
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Abstract
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The aim of this study was to investigate the egg development and the color change of Amphiprion melanopus, by the live food and thyroid hormone. After fertilizing, it took 168 h until hatching. The size of hatching larvae were 3.5±0.3 ㎜, and some individuals had small yolk sac. As reaching the particular age, they underwent the color change (metamorphosis) - Days after hatching (DAH) 10: black, DAH 15～20: the 3 white stripes appear, DAH 30: the dorsal & the caudal white stripe begin to disappear. DAH 90: body color become red and orange, adult: cinnamon body color and a white stripe on head. - The group fed enriched Artemia with Tigriopus japonicus grew the faster than with only Artemia. The fin coloration of the one fed the only T. japonicus has a vivid red and orange color. T₃-treated group (4 ppm) grew the faster than the others (0, 2, 6 ppm). The size of the 6 ppm group was the smallest. The results suggest T. japonicus can be used as a supplement with rotifer and Artemia for the juvenile development and coloration. T₃ is considered to be involved in the metamorphosis and color formation of Amphipirion sp.
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KEYWORD
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Amphiprion melanopus, Ornamental fish, Coloration, Tigriopus japonicus, Thyroid hormone
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