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KMID : 0381919980280030273
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Korean Journal of Microscopy
1998 Volume.28 No. 3 p.273 ~ p.282
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Ultrastructure of Fertilized Egg Envelope in the Tomato Clown Anemonefish, Amphiprion freatus (Pomacentridae : Marine Teleostei)
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Kim Dong-Heui
Reu Dong-Suck
Teng Yung-Chien
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Abstract
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Ultrastructure of fertilized egg envelope in the tomato clown anemonefish (Amphiprion freatus) was examined by mean of light, scanning and transmission electron microscopies. The fertilized egg of tomato clown anemonefish was of non-transparent, ellipsoidal, adhesive and non-floted type, and there were numerous oil droplets in the yolk sac and adhesive filaments in the area of the animal pole. The outer surface of egg envelope was smooth. The fertilized egg envelope consisted of two distinct layers; a non-adhesive outer electron-dense layer and an inner layer, consisting of five horizontal low electron-dense lamellae alternating with the middle electron dense interlamellae.
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KEYWORD
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Marine fish, Pomacentridae, Egg envelope, Fertilized egg, Ultrastructure
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