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KMID : 0381920110410030163
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Korean Journal of Microscopy
2011 Volume.41 No. 3 p.163 ~ p.168
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The Oogenesis of Tiger Barb, Cyprinidae, Teleostei
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Jung Han-Suk
Joo Kyung-Bok
Kim Dong-Heui
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Abstract
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Tiger barb (Puntius tetrazona Bleeker, 1855) is a teleost belonging to Cyprinidae. The oogenesis of tiger barb was investigated by light microscope. The ovary was of white and ellipsoidal shape with the major axis 2 cm and the minor axis 1 cm. Cytoplasm of oogonia was basophilic and many nucleoli were located at inside of nuclear membrane. In early stage of primary oocyte, yolk vesicles were distributed only in the marginal area. In secondary oocyte, the egg envelope was formed and yolk vesicles was formed in the cytoplasm. The basophilic substance of cytoplasm was changed to acidic. In case of matured egg, thickness of egg envelope and size of egg were increased. The yolk vesicles were changed to yolk mass in accordance with development. Also, there is not the formation of oil droplets in cytoplasm. In conclusion, the oogenesis of tiger barb was characterized by the increase in cell size, the formation of yolk, the decrease of basophilic substance in the cytoplasm, and formation of yolk mass.
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KEYWORD
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Tiger barb, Oogenesis, Cyprinidae, Teleost
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