Pfiesteria piscicida


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Pfiesteria piscicida

A dinoflagellate species that periodically causes algal blooms in estuaries along the Atlantic seaboard of the US, which kills fish by releasing a potent neurotoxin. There have been anecdotal reports that Pfiesteria piscicida may also affect humans, causing an array of symptoms including headache, confusion, skin rash and eye irritation, but the public health impact of P piscicida is unknown.

Pfiesteria piscicida

(fēs-tĕr′ē-ă pĭs-ĭ-sīd′ā) [NL fish killer]
A unicellular marine organism, which may or may not produce a toxin, depending on environmental conditions. When toxic, it has been implicated in the death of millions of fish in the estuaries of North Carolina, Delaware, and Maryland. The toxin can become aerosolized, and if humans are exposed to it, severe neurological, mental, and physical illness may occur. Specific therapy to combat the toxin is not available, but concomitant infections can be treated with tetracyclines.
References in periodicals archive ?
Larval Crassostrea bivalve and Artemia brine shrimp bioassays to assess toxicity and micropredation by the heterotrophic dinoflagellates Cryptoperidiniopsis brodyi and Pfiesteria piscicida from Australian waters.
Hog waste spills have caused the rapid spread of Pfiesteria piscicida, which has killed a billion fish in North Carolina alone.
Pfiesteria piscicida and other Pfiesteria-like dinoflagellates: behavior, impacts, and environmental controls.
The hunt for a toxic product of the single-celled alga Pfiesteria piscicida dates to the early 1990s, when researchers laid the blame for fish kills in North Carolina waters on the organism (SN: 9/27/97, p.
Possible Estuary-Associated Syndrome--This vague term reflects the poor state of knowledge of the human health effects of the alga Pfiesteria piscicida and related organisms.
In Maryland and North Carolina, pollution from chicken and hog factory farms is believed to have contributed to outbreaks of Pfiesteria piscicida, a contaminant that kills millions of fish and causes skin irritation, short-term memory loss, and other cognitive problems in humans.
Pfiesteria piscicida and look-alike dinoflagellates are collectively known as Pfiesteria complex organisms (PCOs).
Hog waste spills have caused the rapid spread of a virulent microbe called Pfiesteria piscicida, which has killed a billion fish in North Carolina alone.
Brenda's project, which won on the national level earlier this year, was entitled "Molecular Characterization of Potential Fish Pathogens in Waters Where Reported Pfiesteria piscicida Outbreaks Have Occurred.
One dinoflagellate, Pfiesteria piscicida (the "cell from hell"), has at least 24 life-forms and elaborates a neurotoxin that has caused neurocognitive deficits in fishermen and laboratory workers (3).
Germ gone In 1997 a mysterious, deadly, and hard-to-kilt microbe, Pfiesteria piscicida, appeared in alarming numbers in coastal waters of the eastern US, apparently killing huge numbers of fish and injuring still more.
Tests uncovered outbreaks of a toxic microbe, Pfiesteria piscicida, perhaps caused by runoff of chicken manure that had been spread as fertilizer on farmers' fields.