Record Display for the EPA National Library Catalog


Main Title Concurrent Neoplastic and Protistan Disorders in the American Oyster (Crassostrea Virginica).
Author Couch, John A. ; Winstead, James T. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1979
Report Number EPA-600/J-79-099;
Stock Number PB80-199706
Additional Subjects Oysters ; Blood cells ; Shellfish ; Invertebrates ; Histology ; Florida ; Apalachicola Bay ; Tissues(Biology) ; Leukocytes ; Morphology ; Reprints ; Infections ; Crassostrea virginica ; Dermocystidium marinum ; Pathogens
Library Call Number Additional Info Location Last
NTIS  PB80-199706 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
One of 373 oysters examined as part of a histological survey of oysters from Apalachicola Bay, Florida, USA, had a concurrent blood cell proliferative disorder and a protistan infection. The neoplastic blood cells (leukocytes) were found throughout the vesicular connective tissues and blood spaces in sections of the oyster. These proliferating cells resembled the neoplastic cells described by Couch (1969) and Farley (1969) from other specimens of Crassostrea virginica from Chesapeake Bay, Maryland, USA. Mitotic figures were abundant in foci of the neoplastic tissue. Epithelial tissues of the gut of this oyster were infected by spore and schizogonic stages of Dermocystidium marinum, a presumed pathogenic protist of oysters. Spores of this protist and other proliferative stages were observed in connective tissues and blood spaces. There was no morphological evidence that the neoplastic blood cells were related to the protist life cycle stages.