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Ultrastructure of the Fertilized Egg Envelope from Dark Sleeper, Eleotrididae, Teleost  

Kim, Dong-Heui (Dept. of Basic Science and Institute of Basic Medical Science, Wonju College of Medicine, Yonsei Univ.)
Reu, Dong-Suck (Dept. of Biology, Chongju Univ.)
Deung, Young-Kun (Dept. of Basic Science and Institute of Basic Medical Science, Wonju College of Medicine, Yonsei Univ.)
Publication Information
Applied Microscopy / v.32, no.1, 2002 , pp. 39-44 More about this Journal
Abstract
The ultrastructure of the fertilized egg envelope from dark sleeper, Odontobutis obscurus interrupta belong to Eleotrididae was studied using scanning and transmission electron microscopes. The fertilized egg of dark sleeper was of transparent, ellipsoidal, adhesive and demersal 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 with pore canal. The fertilized egg envelope consisted of two layers, an outer nonadhesive layer and an inner layer, consisting of seven horizontal low electron-dense lamellae alternating with the middle electron dense interlamellae. These ultrastructural characters of fertilized egg envelope from dark sleeper can be utilized in taxonomy of teleost.
Keywords
Fish; Fertilized Egg envelope; Ultrastructure; Dark sleeper;
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