Knowra Ciguatera fish poisoning Ciguatera fish poisoning Ciguatera fish poisoning is a foodborne illness caused by ciguatoxins that accumulate in reef fish. It commonly causes gastrointestinal and neurological symptoms, sometimes including reversal of hot and cold sensations.
Gambierdiscus : A genus of benthic dinoflagellates that produces ciguatoxins and related compounds. These algae are the principal source of toxins entering reef food webs.
Ciguatera diagnosis : Clinical identification of ciguatera based on compatible symptoms and recent consumption of reef fish. No routine laboratory test reliably confirms the illness in an individual patient.
Scombroid food poisoning : A histamine-mediated illness caused by eating improperly stored fish, often producing flushing, rash, and headache. It can follow fish consumption but results from histamine, not ciguatoxins.
Ciguatoxin detection : Analytical methods for identifying and measuring ciguatoxins in fish or biological samples. Low toxin concentrations and many toxin variants complicate reliable testing.
Marine food web : A network of feeding relationships among organisms in ocean ecosystems. Ciguatoxins pass from toxin-producing algae through prey to larger reef fish.
Ciguatera treatment : Supportive medical care for ciguatera, focused on symptoms and complications. There is no established antidote, so treatment responds to the patient’s clinical effects.
Tetrodotoxin poisoning : A potentially fatal poisoning caused by tetrodotoxin in certain animals, including pufferfish. Both are seafood neurotoxic illnesses, but their toxins and usual fish sources differ.
Ciguatera epidemiology : The study of ciguatera’s distribution, frequency, and determinants in human populations. Underreporting and uneven surveillance obscure the true global burden.
Voltage-gated sodium channel : A membrane protein that opens in response to voltage changes, allowing sodium ions to cross cell membranes. Ciguatoxins keep these channels abnormally active, altering nerve and muscle signaling.
Food safety : Practices and policies that prevent food from causing illness or injury. Avoiding high-risk reef fish is the main practical way to prevent ciguatera.
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