Chesapeake Bay Coastal Bays Rivers and Streams Watersheds
Maryland Department of Natural Resources

Amphidinium operculatum

Amphidinium operculatum is an epi-benthic/epiphytic algae that is considered toxic and linked to ciguatera toxins.  This species has only been identified at very low concentrations (133/liter) in the Coastal Bays (Newport Creek - October, 26 1998) as a result of concentrating a routine sample to look at another species.  The concentration of this species in Maryland are very low and there is no evidence of toxic effect.  For more information on Ciguatera Fish Poisoning click here.

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