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a photo showing Pfiesteria piscicida cell



More Pfiesteria Info:
Pfiesteria piscicida is one of the relative small percentage of algal species in the world found to produce toxins. Blooms of Pfiesteria may be unusual in that they can generate fish kills with relatively low densities of only100-300 cells/milliliter. Itís life history contains a complex life cycle characterized by various flagellated, amoeboid and cyst stages and is capable of sexual and asexual reproduction. Pfiesteria is most commonly found in the water column during the warmer summer months in the mid-Atlantic region but has been detected in the sediments during the cooler months. Low to moderate salinity water (Oligohaline-Mesohaline) is the preferred by Pfiesteria. The development of species specific genetic probes has greatly assisted in detection of Pfiesteria among samples of the plankton community. Research continues to focus on the molecular structure of the toxins which would greatly aid in developing a toxin-detecting probe in the future.
Seasonal dominance Summer months
Distribution Worldwide; found in Maryland's Chesapeake and Coastal Bays sub-estuaries.  See maps for sediment survey results in Maryland. (2000-2001) (2001-2002)
Description Armored dinoflagellate, 10-40 um
References Bibliography

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Pfiesteria piscicida | Pfiesteria shumwayae


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