Document Detail

Structural changes of oviduct of freshwater shrimp, Macrobrachium nipponense (Decapoda, Palaemonidae), during spawning.
MedLine Citation:
PMID:  16365928     Owner:  NLM     Status:  MEDLINE    
The structural change of the oviduct of freshwater shrimp (Macrobrachium nipponense) during spawning was examined by electron microscopy. The oviduct wall structural characteristics seem to be influenced significantly by the spawning process. Before the parturition and ovulation, two types of epithelial cells (types I and II) are found in the epithelium. The free surfaces of type I and type II cells have very dense long microvilli. Under the type I and type II cells, are a relatively thick layer of secreting material and a layer of mostly dead cells. After ovulation, two other types of epithelial cells (types III and IV) are found in the oviduct wall epithelium. The free surface of type III cells only has short microvilli scattered on the surface. The thick layer with secreting material and the dead cell layer disappeared at this stage. In some type III cells, the leaking out of cytoplasm from broken cell membrane led to the death of these type III cells. The transformation of all four types of epithelial cells was in the order: IV-->I-->II-->III.
Jian-Ping Lu; Xiao-Hui Zhang; Xiao-Yun Yu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of Zhejiang University. Science. B     Volume:  7     ISSN:  1673-1581     ISO Abbreviation:  J Zhejiang Univ Sci B     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2005-12-20     Completed Date:  2006-02-01     Revised Date:  2010-09-20    
Medline Journal Info:
Nlm Unique ID:  101236535     Medline TA:  J Zhejiang Univ Sci B     Country:  China    
Other Details:
Languages:  eng     Pagination:  64-9     Citation Subset:  IM    
School of Life Sciences, Zhejiang University, Hangzhou 310029, China.
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MeSH Terms
Adaptation, Physiological
Fresh Water
Microscopy, Electron, Scanning
Oviducts / physiology*,  ultrastructure*
Palaemonidae / physiology*,  ultrastructure*
Reproduction / physiology*
Sexual Maturation / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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