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A Comparison Of Paraffin Histology And Hemolymph Analysis For The Diagnosis Of Haplosporidium Nelsoni (Msx) In Crassostrea Virginica (Gmelin), Eugene M. Burreson, M.Elizabeth Robinson, Antonio Villalba
A Comparison Of Paraffin Histology And Hemolymph Analysis For The Diagnosis Of Haplosporidium Nelsoni (Msx) In Crassostrea Virginica (Gmelin), Eugene M. Burreson, M.Elizabeth Robinson, Antonio Villalba
VIMS Articles
Diagnosis of the oyster pathogen Haplosporidium nelsoni (MSX) by paraffin histology is compared with a technique in which hemolymph drawn from the oyster adductor muscle sinus is examined for parasite plasmodia. Oysters from seed beds of the James River, Virginia imported to an MSX endemic area in May, 1986 were sampled monthly through December, 1986 and in February, 1987. A sample of 25 oysters was bled each month and then processed for sectioning. Of the 200 oysters sampled, 89 (44.5%) were diagnosed as infected using histology and 61 (30.5%) were diagnosed as infected using hemolymph examination. All the heavy and …