is a parasitic dinoflagellate which attacks shellfish.
In Georgia it has caused crab kills in the summers of 1999 and 2000.
Blue Crabs in Georgia struck by blood disease
may be responsible for crab decline
of Shellfish: Hematodinium sp.
(Bitter Crab Disease)
research: Blue crab, Callinectes sapidus
is a toxic dinoflagellate which has been identified as the causative
agent in fish kills and lesions on fish in estuaries and coastal
areas from Delaware to North Carolina. Thus far, it has not
caused a problem in Georgia. It is possible that because of
the large tidal amplitudes we have along Georgia's coast that the
high water temperatures and relatively stagnant water that characterize
areas of Pfiesteria outbreaks will not occur here.
However, samples are taken and analyzed by GA DNR Coastal Resources
Division at times when water temperatures are high.
and Fish Health (MD)
research at VIMS (VA)
information on Pfiesteria piscicida (NCSU Aquatic Botany