Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Vol. 27: 149-155,1996 DISEASES OF AQUATIC ORGANISMS
 

Summary: Vol. 27: 149-155,1996
DISEASES OF AQUATIC ORGANISMS
Dis Aquat Org
Published November 14
Localization of the pathogen VibrioP1 in clams
affected by Brown Ring Disease
B. Allam, C. Paillard*,P. Maes
URA CNRS D1513, Institut Universitaire Europeen de la Mer, Universite de Bretagne Occidentale. F-29287 Brest Cedex, France
ABSTRACT- Since 1987, Brown Ring Disease, caused by a bacterial pathogen named Vibrio P1 (VPl),
has spread throughout aquacultural sites for the manila clam Ruditapes ph~l~ppinarumalong the
French Atlantic coast. Experimental pathology revealed that the heterotrophic bacterial microflora
increased during the development of the disease and VP1 levels remained relatively stable. The great-
est proportion of VP1 bacteria was associated with the surface of the clam flesh. Surface bacteria rep-
resented about 90% of the VPl amount in experimentally diseased clams. Similarly, the mantle did not
seem to be deeply colonized by VP1, since an alcohol rinse precluded detection of the pathogen by bac-
teriological methods. Microscopic observations of heavily diseased clams also revealed that VP1 is par-
ticularly associated with the periostracal lamina. The possibility of any other major site of infection can
be eliminated.
KEY WORDS: Bivalve . Ruditapes philippinarurn . Shell disease Periostracal lamina . Bacteria
Immunofluorescence

  

Source: Allam, Bassem - School of Marine and Atmospheric Sciences, SUNY at Stony Brook

 

Collections: Biology and Medicine; Environmental Sciences and Ecology