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Sea Star Wasting Disease Discovered in Alaska

Researchers from NCCOS and the University of Alaska Fairbanks School of Fisheries and Ocean Sciences found evidence of sea star wasting disease in Alaska while surveying intertidal areas near NOAA’s Kasitsna Bay Laboratory. The team found the diseased sea stars during long-term monitoring surveys conducted under the Gulf Watch Alaska program at sites around Elephant […]

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Low Oxygen Conditions Increase Parasite Infections in Oysters

A study funded in part by NCCOS has found that diel-cycling hypoxia—daily cycling of high to very low oxygen levels—in shallow coastal waters increases parasite infections in eastern oysters (Crassostrea virginica). The project team tested and confirmed that diel-cycling hypoxia increases eastern oyster susceptibility to Perkinsus marinus infection, most likely by reducing the oxygen carrying capacity […]

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Measuring Parasites and Disease in U.S. Oysters and Mussels

NOAA today released its first-ever long term report of the national distribution of parasites and disease in mussels and oysters, concluding that there was no general threat to oyster and mussel population in the nation’s coastal waters at the time of the study, despite some locations along the Gulf of Mexico and West Coast with […]

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NCCOS Scientist to Advise Shellfish Sanitation Experts on Harmful Algae Lab Methods

The National Centers for Coastal Ocean Science’s (NCCOS) Dr. Quay Dortch will join the Interstate Shellfish Sanitation Conference (ISSC) as an expert advisor. Dr. Dortch’s advice and expertise will contribute to one of the most technical and specialized areas of shellfish sanitation, that of laboratory methods for detecting and testing harmful algal toxins and their syndromes. […]

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Scientists Recognized for Role in Assessing Dolphin Mortalities

Last month, scientists from NCCOS’s Center for Coastal Environmental Health and Biomolecular Research (CCEHBR) received an Outstanding Achievement Award from NOAA’s National Marine Fisheries Service for their efforts in assessing dolphin mortalities along the South Carolina coast during the 2013–2014 unusual mortality event of bottlenose dolphins. CCEHBR staff and their partners from Coastal Carolina University […]

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New Assay Rapidly Detects Pathogens in Marine Mammals

A three-year project by NCCOS scientists has culminated in a reliable tool for rapid detection of pathogenic Brucella bacteria in clinical samples from marine mammals. Rapid detection of these pathogens in marine mammals has been difficult ever since Brucella infections were first recognized in marine mammals in the 1990s. Brucellosis, a Brucella-based reproductive disease, is […]

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Environmental Conditions Can Influence Development of Dermo Disease in Oysters

A recent NCCOS-sponsored study by the Smithsonian Institution showed that long-term exposure to daily fluctuations of hypoxia (low dissolved oxygen) increased Dermo disease (Perkinsus marinus) infection in previously uninfected eastern oysters. Surprisingly, daily-cycling pH (a measure of acidity) did not affect Dermo disease infection levels in conjunction with daily-cycling hypoxia or with continuous normal oxygen […]

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NCCOS Identifies Cause of Large Fish Kills in North Carolina Estuaries

In recent years, North Carolina estuaries have experienced large fish kills often associated with rains and moderate temperatures. Most of the dead fish have exhibited large, open skin ulcers. Scientists at NCCOS analyzed the ulcerated fish collected by the North Carolina Department of Environment and Natural Resources (NCDENR) and the Neuse Riverkeeper Foundation using molecular assays […]

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