|
|
|
| The Cause of Massive Mortality of Clam Meretrix meretrix Linnaeus in Qidong ity,Jiangsu Province |
| GUO Chuang,CHEN Jing,ZOU Yong,HUANG Chun-gui,CHEN Hui |
|
|
|
|
Abstract Seawater samples were collected from the area where the high mortality of clam Meretrix meretrix occurred in Qidong city, Jiangsu province, and the tissues and organs in the infected clam such as mantle, branchia, foot and digestive deverticula were analyzed by chemical method, bacteria isolation and ultrathin sections. The results indicated that the chemical pollution and bacteria were not the cause of the high mortality;the ultrathin sections observed with transmission electron microscope showed that there were some inclusion bodies with viruses and other dispersed viruses in the mantle. These spherical viruses with the sizes of 60~80 nm in diameter and lack of capsula. Also, severe cytopathological changes including condensing of nuclei, dissolving of mitochondria,desquamation of microvilli and vesicling of other organells were observed obviously in other infected tissues.
|
|
Received: 25 November 2009
|
|
|
|
|
|
|
