You are here: Home / News / Harmful Algal Blooms / Archive by category "Marine Biotoxin Impacts" (Page 2)

News and Features by Research Area or Topic

Forensic Genomics Used to Identify Causes of Ocean Mass Mortality Events

Fish and invertebrate mass mortality events are increasing in coastal zones worldwide, but in many cases it can be difficult to pinpoint the cause of death. Toxic spills, hypoxia (low dissolved oxygen), disease outbreaks, and toxin-producing harmful algal blooms possibly cause these events, but it is critical from a management and response perspective to accurately […]

Continue reading

Algal Community Study Advances Ciguatera Management in Pacific Islands Region

Populations of Gambierdiscus, the algae most often associated with ciguatera fish poisoning, have been found to have only low or moderate toxicity on the western coast of Marakei Island in the Republic of Kiribati—a section of the island considered a high-risk area for ciguatera for decades. This unexpected finding is part of a recent NCCOS-funded […]

Continue reading

Sentinel Site Alerts California Public to Toxic Shellfish

Routine sampling of marine mussels from a University of California sentinel site at the Santa Cruz Wharf prompted the California Department of Public Health (CDPH) to issue a health advisory warning for domoic acid poisoning due to high levels of the toxin in shellfish samples. The April 4, 2014 advisory warned consumers not to eat recreationally […]

Continue reading

Eating USVI Invasive Lionfish Could Lead to Ciguatera Fish Poisoning

A new report by NCCOS-sponsored researchers shows that consumption of lionfish from the U.S. Virgin Islands (USVI) could lead to ciguatera fish poisoning. The research team analyzed ciguatera toxin levels in lionfish collected from waters surrounding USVI and found that about 40 percent of USVI lionfish have a measurable level of ciguatera toxin. The team […]

Continue reading

Harmful Algal Bloom Intensity May be Tied to Ocean Carbon Dioxide Levels

Recent findings show that increases in oceanic carbon dioxidefrom the burning of fossil fuels over the last 200 years may have increased the intensity and toxicity of Karenia brevis blooms. Researchers from the National Centers for Coastal Ocean Science (NCCOS) report that this effect is projected to increase substantially by the turn of the century with […]

Continue reading

Texas Alerted to Toxic Pseudo-nitzschia Bloom in Galveston Bay

Volunteers with NOAA’s Phytoplankton Monitoring Network have reported a bloom of the diatom, Pseudo-nitzschia in Galveston Bay, Texas, and NOAA’s Analytical Response Team has confirmed that the bloom is producing domoic acid, a neurotoxin that can cause amnesiac shellfish poisoning. State managers of the Texas Parks and Wildlife Department and Texas Department of State Health […]

Continue reading

NCCOS-developed Method for Toxins Detection Approved for Regulatory Testing of Shellfish in the U.S

Earlier this year, the Interstate Shellfish Sanitation Conference (ISSC) approved a new assay developed by the National Centers for Coastal Ocean Science (NCCOS) as an official method for identifying toxicity that could result in paralytic shellfish poisoning. This approval is the culmination of more than a decade of effort to find an alternative to live animal […]

Continue reading

Common Brevetoxin Metabolite Found in Gulf of Mexico Oysters May Not be a Health Risk

Brevetoxin B2—an abundant shellfish metabolite of brevetoxin found in Gulf of Mexico oysters—does not readily pass through an intestinal barrier, rendering it unlikely to cause neurotoxic shellfish poisoning. The B2 metabolite is produced by oysters and many other animals by attaching the amino acid cysteine to the brevetoxin that is consumed by shellfish during blooms […]

Continue reading