Haplosporidium nelsoni (MSX) in eastern oyster populations of North Carolina.
Morrison, N. M., Marshall, M. D., Dykstra, M. J. and Levine, J. F.
J. Aquat. Anim. Health
Populations of the eastern oyster Crassostrea virginica from 36 locations off the coast of North Carolina were examined cytologically in the fall of 1989 for Haplosporidium nelsoni (MSX). The pathogen was found in oysters from 11 (31%) of the sites. Systemic Perkinsus marinus infections were noted in oysters from 26 (72%) of the locations.