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RECORD NUMBER: 37 OF 44

OLS Field Name OLS Field Data
Main Title Oyster Serum Agglutinins and Resistance to Protozoan Parasites.
Author Chintala, M. M. ; Ford, S. E. ; Fisher, W. S. ; Ashton-Alcox, K. A. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. Center for Marine and Estuarine Disease Research. ;Maryland Univ., Cambridge. Horn Point Environmental Labs. ;Haskin Shellfish Research Lab., Port Norris, NJ.;Department of Agriculture, Washington, DC.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/442; NRAC-88-38500-4070;
Stock Number PB95-112173
Additional Subjects Oysters ; Protozoa ; Parasites ; Lectins ; Agglutinins ; Defense mechanisms ; Mollusca ; Shellfish ; Mortality ; Resistance ; Serum ; Pathology ; Bacteria ; Reprints ; Haplosporidium nelsoni ; Perkinsus marinus ; Crassostrea virginica
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NTIS  PB95-112173 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/06/1995
Collation 8p
Abstract
Serum agglutinins or lectins are reported to be induced in marine molluscs by exposure and may enhance bacterial clearance from the host; however, there is little information on possible relationships between lectins and protozoan parasites of molluscs. Two protozoans, Haplosporidium nelsoni and Perkinsus marinus, cause mortality of eastern oysters, Crassostrea virginica. The authors tested the hypothesis that if hemolymph agglutinins or other hemolymph proteins are important in the defense against these parasites, oysters with high 'baseline' (pre-exposure) levels, or oysters that produce these substances after challenge, should have lower parasite burdens and survive longer than animals without these characteristics. In May 1990, individually labelled oysters were placed in Chesapeake Bay, MD, where they were exposed primarily to P. marinus, and in Delaware Bay, NJ, where they were exposed to both parasites. The authors conclude that the serum agglutinins tested play no role in defense against either H. nelsoni or P. marinus, and that differences in total protein were related to pathology rather than disease resistance.