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KMID : 1102020160460030150
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Applied Microscopy
2016 Volume.46 No. 3 p.150 ~ p.154
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Ultrastructure of the Fertilized Egg Envelope from Pseudobagrus fulvidraco, Bagridae, Teleostei
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Sohn Joon-Hyung
Kwon Oh-Yun
Kim Dong-Heui
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Abstract
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The ultrastructure of fertilized egg envelope from Pseudobagrus fulvidraco belongs to Bagridae was investigated using light and electron microscopes. The fertilized egg was compressed spherical, light-yellowish, demersal, and adhesive. The size of fertilized egg is about 1.85±0.13 mm, perivitelline space is not well developed, and there were no appendicular structures on the outer surface of egg envelope and oil droplets in vitelline membrane under light microscope. The micropyle was located in the animal pole of fertilized egg. Adhesive reticular fiber was covered fertilized egg envelope. The thickness of egg envelope was about 3.7~4.2 μm, and the egg envelope consisted of two layers: an outer, electron-dense adhesive fibers layer and an simple inner layer with pore. Therefore, the ultrastructure of cross section of the fertilized egg envelope showed species specificity, but studies on the other species belongs to Bagridae were need to get correct information about common traits in family.
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KEYWORD
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Fertilized egg, Egg envelope, Korean bullhead, Pseudobagrus fulvidraco, Ultrastructure
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