|Table of Contents|

Ultrastructures of Novaculina chinensis during oogenesis(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
Vol.07 No.3
Page:
248-253
Research Field:
Reviews
Publishing date:

Info

Title:
Ultrastructures of Novaculina chinensis during oogenesis
Author(s):
RAO Xiaozhenet al.
(Bioengineering College, Fujian Teachers University, Fuzhou350007, China) (1 Electron Microscopy Lab,Fujian Medical University, Fuzhou350004, China)
Keywords:
Keywords Novaculina chinensis oogenesis oocyte ultrastructure
CLC:
-
PACS:
DOI:
-
DocumentCode:

Abstract:
Abstract Ultrastructural changes of oogenesis in Novaculina chinensis were observed under TEM. Oogonia lack organelles in cytoplasm besides of some mitochondria and a lot of ribosomes. At previtellogenic stage,oocytes contain many mitochondria and rough endoplasmic reticula.Yolk membrane, a few of yolk granules and many lipid droplets are found in this later stage. During the vitellogenesis, the size of oocytes rapidly becomes larger. The nuclei of oocytes expand amoeboid processes.There are also many various and developing organelles (mitochondria, lysosomes, rough endoplasmic reticula). At the same time,the yolk granules become more and more, and the lipid droplets become less and less.At maturation stage, there are more yolk granules and less lipid droplets in cytoplasm. Several organelles are presumed to involve in formation of yolk granules. We observed amoeboid processes on surface of oocytes for the frist time. This article also dicusses features of oogenesis in Novaculina chinensis. Fig 2, Ref 13

References

-

Memo

Memo:
-
Last Update: 2008-08-07