shellfish poisoning

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shellfish poisoning

 
an acute intoxication caused by ingestion of bivalve mollusks contaminated with the neurotoxin (saxitoxin) secreted by certain dinoflagellates, protozoa that are an important component of marine plankton. One form, paralytic shellfish poisoning, is caused by species of Gonyaulax, and is characterized by paresthesias of the mouth, lips, face, and limbs, nausea, vomiting, and diarrhea; in rare severe cases muscle weakness or paralysis and respiratory embarrassment and death may occur. A self-limited milder form, neurotoxic shellfish poisoning, not associated with paralysis, is caused by species of Gymnodinium.

shellfish poisoning

Etymology: AS, scell + fisc
a toxic neurologic condition that results from eating clams, oysters, or mussels that have ingested the toxin-producing protozoa commonly called the red tide. The characteristic symptoms appear within a few minutes and include nausea, lightheadedness, vomiting, and tingling or numbness around the mouth, followed by paralysis of the extremities and, possibly, respiratory paralysis. Saxitoxin, the causative agent, is not destroyed by cooking. However, the severity of the illness is diminished if the water used in cooking is not consumed. See also Gonyaulax catenella, venerupin poisoning.

shellfish poisoning

Poisoning caused by eating shellfish that have fed on plankton during a red tide. There are several recognized syndromes that may result, including amnesic shellfish poisoning, diarrheal shellfish poisoning, and paralytic shellfish poisoning.
See also: poisoning
References in periodicals archive ?
Uptake kinetics of paralytic shellfish toxins from the dinoflagellate Alexandrium fundyense in the mussel Mytilus edulis.
Research into this and other shellfish toxins continues to be a major thrust of the laboratory.
Shellfish toxins are produced by algae and usually originate in the ocean.
Uptake, distribution and depuration of paralytic shellfish toxins from Alexandrium minutum in Australian greenlip abalone, Haliotis laevigata.
Shellfish toxins are a global problem and the frequency of toxin outbreaks appears to be increasing.
The chemical structure of YTX is closely related to other ladder-shaped polyethers like ciguatoxin (CTXs), maitotoxin, brevetoxins (PbTXs), and some diarrhetic shellfish toxins (DSTs).
Elevated levels of paralytic shellfish toxins has forced the closure of the entire Oregon Coast to mussel harvesting, according to the state Department of Agriculture and the Department of Fish and Wildlife.
ABSTRACT Lipophilic shellfish toxins (LSTs) produced by dinoflagellates, including Dinophysis spp.
Agriculture department officials said they will continue to test for shellfish toxins weekly as tides permit.
ABSTRACT This paper presents the results from an experiment, where uptake and elimination of diarrhetic shellfish toxins (DST) of the okadaic acid (OA) and pectenotoxin (PTX) groups were compared between blue mussels (Mytilus edulis) and European oysters (Ostrea edulis).
The agency will continue to monitor and test for shellfish toxins weekly.
The concentration of diarrhetic shellfish toxins (DST) was inversely related to the meat content of the mussels.