A viral disease of the blue crab,Callinectes sapidus: Histopathology and differential diagnosis |
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| Authors: | Phyllis T. Johnson |
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| Affiliation: | U. S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Middle Atlantic Coastal Fisheries Center, Pathobiology Investigations, Oxford, Maryland 21654 USA |
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| Abstract: | A disease of the blue crab caused by a cytoplasmic virus morphologically resembling reovirus is described. Crabs infected with the virus were collected both from a low-salinity tributary of Chesapeake Bay, Maryland, and from Chicoteague Bay, Virginia, a high-salinity area. Virus occurs with greatest frequency in cells of the hemopoietic tissue and in hyaline hemocytes. It is also found in epidermis and gill epithelia and within the neurilemma where it occurs in granulocytes and other cells of uncertain identity. The following diseases are considered in the differential diagnosis of the viral infection: paramoebiasis, bacterial infection, microsporidan infection, Hematodinium infection, and disease caused by a herpes-like virus. |
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