首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Pathological changes in the nephrocytes of the shore crab, Carcinus maenas, following injection of bacteria
Authors:Valerie J Smith  NA Ratcliffe
Institution:Department of Zoology, University College of Swansea, Swansea SA2 8PP, United Kingdom
Abstract:The gills of Carcinus maenas were examined by light and electron microscopy following injection of either sterile saline or the bacteria Bacillus cereus and Moraxella sp., to determine any role(s) for the nephrocytes in the host defense reactions. The results showed that although intact bacteria were not sequestered to the nephrocytes, these cells were active in the removal of large quantities of cell debris from the hemolymph. Much of this material was derived from the breakdown of the hemocytes in response to the presence of bacteria and it's accumulation in the central vacuoles of the nephrocytes resulted in the degradation of these cells. It is proposed that while nephrocytes do not phagocytose intact bacteria, they augment the host defenses by clearing much of the hemocyte and associated bacterial debris from the gills, thus preventing blockage of the lamellar sinuses and subsequent impairment of respiration.
Keywords:Nephrocytes  phagocytosis  cell breakdown  host defense  bacteria  crab
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号