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Ultrastructural Studies on Oocyte Development and Vitellogenesis associated with Follicle Cells in Female Scapharca subcrenata (Pelecypoda: Arcidae) in Western Korea

  • Kim, Sung Han (Faculty of Applied Bioscience, Kunsan National University)
  • Received : 2016.07.22
  • Accepted : 2016.09.19
  • Published : 2016.09.30

Abstract

Ultrastructural studies on oocyte development and vitellogenesis in oocytes, and the functions of follicle cells during oogenesis and oocyte degeneration were investigated to clarifyb the reproductive mechanism on vitellogenesis of Scapharca subcrenata using electron microscope observations. In this study, vitellogenesis during oogenesis in the oocytes occured by way of autosynthesis and heterosynthesis. Of two processes of vitellogenesis during oogenesis, the process of endogenous autosynthesis involved the combined activity of the Golgi complex, mitochondria and rough endoplasmic reticulum. However, the process of exogenous heterosynthesis involved endocytotic incorporation of extraovarian precursors at the basal region of the oolema of the early vitellogenic oocytes before the formation of the vitelline coat. In this study, follicle cells, which attached to the previtellogenic and vitellogenic oocytes, were easily found. In particular, the follicle cells were involved in the development of previtellogenic oocytes by the supply of nutrients, and vitellogenesis in the early and late vitellogenic oocytes by endocytosis of yolk precursors. Based on observations of follicle cells attached to degenerating oocytes after spawning, follicles of this species are involved in lysosomal induction of oocyte degeneration for the resorption phagosomes (phagolysosomes) in the cytoplasm for nutrient storage, as seen in other bivalves. In this study, the functions of follicle cells can accumulate reserves of lipid granules and glycogen particles for vitellogenesis from degenerating oocytes after spawning.

Keywords

References

  1. Chung EY (2007) Oogenesis and sexual maturation in Meretrix lusoria (Roding, 1798) (Bivalvia: Veneridae) in western Korea. J Shellfish Res 26:71-80. https://doi.org/10.2983/0730-8000(2007)26[71:OASMIM]2.0.CO;2
  2. Chung EY (2008) Ultrastructural studies of oogenesis and sexual maturation in female Chlamys (Azumapecten) Farreri Farreri (Jones & Preston, 1904) (Pteriomorphia: Pectinidae) on the western coast of Korea. Malacologia 50:279-292. https://doi.org/10.4002/0076-2997-50.1.279
  3. Chung EY, Ko CH, Kang HW, Choi KH, Jun JC (2008) Ultrastructure of oocytes during oogenesis and oocyte degeneration associated with follicle cells in female Sinonovacula constricta (Bivalvia: Pharidae) in western Korea. Animal Cells and Systerms 12:313-319. https://doi.org/10.1080/19768354.2008.9647187
  4. Chung EY, Koh CH, Park GM (2007) Oogenesis, oocyte degeneration and sexual maturation in female Cyclina sinensis (Gmelin, 1971) (Bivalvia: Veneridae) in Korea. Integrated Bioscience 11:191-198. https://doi.org/10.1080/17386357.2007.9647335
  5. Chung EY, Park YJ, Lee JY, Ryu DK (2005) Germ cell differentiation and sexual maturation of the hanging cultured female scallop Patinopecten yessoensis on the east coast of Korea. J Shellfish Res 24:913-921. https://doi.org/10.2983/0730-8000(2005)24[913:GCDASM]2.0.CO;2
  6. Dorang G, Le Pennec M (1989) Ultrastructural study of oogenesis and oocytic degeneration in Pecten maximus from the Bay of St. Brieuc. Mar Biol 103:339-348. https://doi.org/10.1007/BF00397268
  7. Eckelvarger KJ, Davis CV (1996) Utrastructure of the gonad and gametogenesis in the eastern oyster, Crassostrea virginica. 1. Ovary and oogenesis. Mar Biol 127:79-87. https://doi.org/10.1007/BF00993647
  8. Gaulejac DB, Henry M, Vicente N (1995) An ultrastructural study of the marine bivalve Pinna nobilis (Linnaeus, 1758). 1. Oogenesis. J Mollusc Stu 6:375-392.
  9. Kim JH, Chung EY, Choi MS, Lee KY, Lee IH, Seo WJ (2011) Germ cell differentiation during spermatogenesis, and ultrastructural characteristics of mature sperm in male Phacosoma japonicus (Bivalvia: Veneridae). Kor Malacol Soc 27:55-65. https://doi.org/10.9710/kjm.2011.27.1.055
  10. Kwon OK, Park GM, Lee JS (1993) Coloured Shells of Korea. Academy Publishing Co., 288 pp. (in Korean)
  11. Min DK, Lee JS, Ko DB, Je JG (2004) Mollusks in Korea. Hanguel Graphics. 566pp.
  12. Pipe RK (1987) Oogenesis in the marine mussel Mytilus edulis: An ultrastructural study. Mar Biol 95:405-414. https://doi.org/10.1007/BF00409571
  13. Tanaka Y (1954) Spawning season of important bivalve in Ariake Bay Anadara subcrenata (Lischke). Bull Japan Soc Sci Fish 19:1157-1160. https://doi.org/10.2331/suisan.19.1157
  14. Yoo JS (1976) Korean Shells in Collour. Ilgisa, Seoul, pp 196. (in Korean)
  15. Yoo SK (1964) Biological studies on the propagation of important bivalve 1 Growth and size of adult bivalve of the Anadara subcrenata. Bull Nat'l Fish Univ Busan 6:15-20. (in Korean)
  16. Yoo SK (1977) Biological studies on the propagation of important bivalve 5 morphological characteristics of the ark shell, Anadara subcrenata. Bull Nat'l Fish Univ Busan 17:71-78.
  17. Yoshida H (1953) Studies on larvae and young shells of industrial bivalve in Japan. J Shimonoseki Coll Fish 3:15-18. (in Japanese)