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Alterations in Hemolymph and Extrapallial Fluid Parameters in the Manila Clam, Ruditapes philippinarum,
 

Summary: Alterations in Hemolymph and Extrapallial Fluid Parameters
in the Manila Clam, Ruditapes philippinarum,
Challenged with the Pathogen Vibrio tapetis
Bassem Allam,1
Christine Paillard, and Michel Auffret
Institut Universitaire EuropeŽen de la Mer, UMR 6539, UniversiteŽ de Bretagne Occidentale,
Technopo^le Brest-Iroise, 29280 PlouzaneŽ, France
Received November 15, 1999; accepted April 5, 2000
In a recent study, we demonstrated the presence of
defense factors, competent hemocytes and high enzy-
matic activities (peptidases, hydrolases, lytic, etc.), in
the extrapallial fluid, located between the mantle and
the shell, of the Manila clam, Ruditapes philippina-
rum. In Europe, this species is affected by brown ring
disease, an epizootic disease caused by the bacterium
Vibrio tapetis. The present work focused on the effect
of the development of the disease on cellular and hu-
moral defense parameters in the hemolymph and the
extrapallial fluid of experimentally infected clams. Re-
sults indicate significant changes in total and dead

  

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

 

Collections: Biology and Medicine; Environmental Sciences and Ecology