space space space space space space space space
ioos logo space
top space
About Data, Products and Modeling Projects Community and Classroom users return home space

Harmful Algae & Red Tide Species Information

Map View About HAB News What Are HABs? HAB Species

What HAB species are found in California?

Dinophysis spp.

Potential Toxin Produced: Okadaic Acid
Syndrome: Diarrhetic shellfish poisoning (DSP)
Photo courtesy of Fernanda Mazzillo

Species in the dinoflagellates genus Dinophysis have been found to produce okadaic acid which can cause diarrhetic shellfish poisoning (DSP). DSP is primarily observed as a generally mild gastrointestinal disorder, e.g., nausea, vomiting, diarrhea, and abdominal pain accompanied by chills, headache, and fever. Different species of Dinophysis occur in Southern California waters on a regular basis, and the presence of okadaic acid has been detected in California.

SoCal Map