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Domoic acid (DA) is a kainic acid-type neurotoxin that causes amnesic shellfish poisoning (ASP). [1] It is produced by algae and accumulates in shellfish , sardines , and anchovies . When sea lions, otters, cetaceans, humans, and other predators eat contaminated animals, poisoning may result.
Amnesic shellfish poisoning (ASP) is an illness caused by consumption of shellfish that contain the marine biotoxin called domoic acid. [1] In mammals, including humans, domoic acid acts as a neurotoxin, causing permanent short-term memory loss, brain damage, and death in severe cases.
A domoic acid event can happen when toxic algal blooms produce domoic acid toxin, according to the Marine Mammal Care Center. The blooms that produce the toxin result from a specific type of algae.
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
Domoic acid is a neurotoxin produced by harmful algal blooms that accumulates in filter-feeding fish, including anchovies and sardines. Those fish are then eaten by seals, sea lions and dolphins.
Some shellfish like oysters can accumulate domoic acid, a toxin produced by diatoms, which the shellfish eat. Domoic acid overstimulates glutamate receptors in the brain, which can cause anything ...
Symptoms typically include neurologic and gastrointestinal issues including: [4] [6] nausea; vomiting; diarrhea; numbness and tingling in the lips, mouth, face, and extremities; The latter has been described as "nerves being on fire" or "ants crawling and biting all over". [4] Other less common symptoms can include: [4] ataxia; loss of ...
Unprecedented deaths of sea lions along California's Central Coast
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