Sentences with phrase «shellfish toxins»

In mid-December 2012 recreational mussel harvesting was closed along the entire Oregon coast because the mussels were contaminated with paralytic shellfish toxins.

But neither microcystins nor Dinophysis shellfish toxins have been included in the routine monitoring of California shellfish.

Dinophysis shellfish toxins (okadaic acid and derivatives) cause diarrhetic shellfish poisoning and are produced by marine dinoflagellates in the genus Dinophysis.

Not exact matches

Although shellfish on the open coast are routinely monitored for some of these toxins, the toxins and contamination levels in shellfish from San Francisco Bay may be very different from what's found on the open coast, he said.

«At first we thought no one eats shellfish out of San Francisco Bay, but in fact you can go online and find blogs talking about the best places to collect mussels, and some of those are the places where we found the highest toxin levels,» Kudela said.

When those surveys revealed both toxins were occurring throughout the bay, they began testing shellfish and looking for all four toxins.

Claudia Benitez - Nelson of the University of South Carolina in Columbia and colleagues are the first to look for domoic acid in alga particles and sediment up to 800 metres down, where they found the toxin at concentrations more than five times the US federal limit for shellfish sold as food (Nature Geoscience, DOI: 10.1038 / ngeo472).

Biologists have long known that toxins produced by algal blooms — exploding populations of minute, marine algae — can accumulate in shellfish that graze on them.

Some emit toxins that can paralyze or kill such shellfish as clams, mussels, and oysters and can adversely affect the food chain all the way up to humans.

State resource managers have been collecting shellfish to monitor for toxins for decades.

Shellfish and anchovies containing toxins can get eaten by marine mammals and birds.

«Recent large toxic blooms off of the California coast and the attendant damage to local shellfish and the shellfish economy underscore the importance of understanding how long the marine snow remains toxic, how deep it can go and how long marine organisms are exposed to the toxin,» Schnetzer says.

«These events can sicken or kill people who consume toxin - contaminated shellfish and can damage marine ecosystems by killing fish and other marine life.»

Alexandrium and Dinophysis are serious health concerns as they make neurotoxins and gastrointestinal toxins that can cause paralytic and diarrhetic shellfish poisoning in humans.

There's further money lost to the shellfish industry as these closures last,» McKibben said, adding that the presence of the toxins can continue for up to a year.

Burleson identifies and analyzes toxins created by the «red tide» phenomena — an algal bloom that looks red or brown and can make oysters and shellfish toxic to eat.

Along with other shellfish, they can absorb various toxins and all kind of parasites found in the ocean, which in many cases outweighs the zinc benefits.

Although there are legitimate concerns about mercury and toxins in certain types of fish and shellfish, the benefits of consuming seafood far outweigh the risks (6).

It is caused by eating shellfish contaminated with the dinoflagellate Alexandrium catenella that contains a toxin.

I think, if one is «kosher», one conducts certain practices and avoids certain other practices based on their presumed effect on the presumed creator of trichinosis in pork, red tide toxin in shellfish, bacterial colonies on milk - soaked wood, etc..

The toxins end up in filter feeders, such as shellfish, which draw algae out of the water, and in the stomachs of zooplankton and other small animals that feed on algae.

These events can sicken or kill people who consume toxin - contaminated shellfish, and can damage marine ecosystems by killing fish and other marine life,» says Christopher Gobler, professor of marine science at Stony Brook.

Harmful algal blooms, which often produce a toxin and occur in both salt and fresh water, are known to kill fish, marine mammals, and birds; they can contaminate shellfish with toxins and harm human health, sometimes resulting in fatalities.