Domoic acid production near California coastal upwelling zones, June 1998

  title={Domoic acid production near California coastal upwelling zones, June 1998},
  author={Vera L. Trainer and Nicolaus G. Adams and Brian D. Bill and Carla M. Stehr and John C. Wekell and Peter D. R. Moeller and Mark Busman and Dana L. Woodruff},
  journal={Limnology and Oceanography},
Sea lion mortalities in central California during May and June 1998 were traced to their ingestion of sardines and anchovies that had accumulated the neurotoxin domoic acid. The detection of toxin in urine, feces, and stomach contents of several sea lions represents the first proven occurrence of domoic acid transfer through the food chain to a marine mammal. The pennate diatoms, Pseudo‐nitzschia multiseries and P. australis, were the dominant, toxin‐producing phytoplankton constituting algal… 

Domoic acid in benthic flatfish on the continental shelf of Monterey Bay, California, USA

Curlfin turbot, Pleuronicthys decurrens, the flatfish with both the highest level and frequency of DA contamination, are reported to feed exclusively on polychaetes, suggesting that these invertebrates may be an important vector of the toxin in benthic communities and may pose a risk to other bentho-feeding organisms.

Biological and physical dynamics of domoic acid production off the Washington coast

The relationship among Pseudo‐nitzschia distributions, particulate toxin levels in seawater, and the energetic and highly variable water masses of an upwelling‐dominated region are explored using

A decade and a half of Pseudo-nitzschia spp. and domoic acid along the coast of southern California.

The first closure of shellfish harvesting due to domoic acid in Puget Sound, Washington, USA

It is speculated that a more toxic 'oceanic' strain may recently have been advected from the Pacific Ocean or that local environmental conditions at the time of this bloom were more conducive to toxin production.

Coastal upwelling linked to toxic Pseudo-nitzschia australis blooms in Los Angeles coastal waters, 2005–2007

Harmful algal blooms dominated by the diatom Pseudo-nitzschia spp. have become a perennial but variable event within surface waters near the greater Los Angeles area. Toxic blooms during spring

Circulation and environmental conditions during a toxigenic Pseudo-nitzschia australis bloom in the Santa Barbara Channel, California

During May 2003, a toxigenic bloom of the diatom Pseudo-nitzschia australis occurred in the Santa Barbara Channel (SBC), California, that was linked to a marine mammal mortality event in the region.

An unprecedented coastwide toxic algal bloom linked to anomalous ocean conditions

It is demonstrated that this outbreak of the neurotoxin domoic acid along the North American west coast in spring 2015 was initiated by anomalously warm ocean conditions, and has the potential for similarly devastating ecological and economic disruptions in the future.

Influence of the Mississippi River on Pseudo-nitzschia spp. Abundance and Toxicity in Louisiana Coastal Waters

The presence of domoic acid (DA) toxin from multiple species of Pseudo-nitzschia is a concern in the highly productive food webs of the northern Gulf of Mexico. We documented the Pseudo-nitzschia



Domoic acid-producing diatom blooms in Monterey Bay, California: 1991-1993.

This study suggests that P. australis cells may always be toxic in natural populations and that toxin concentrations on a per cell basis have no statistically significant relationship to population density or to nutrient concentrations other than silicate.

Mortality of sea lions along the central California coast linked to a toxic diatom bloom

Findings reveal that monitoring of mussel toxicity alone does not necessarily provide adequate warning of DA entering the food web at levels sufficient to harm marine wildlife and perhaps humans.

Detection of domoic acid in northern anchovies and California sea lions associated with an unusual mortality event.

The authors' detection of P. australis frustules, via scanning electron microscopy, in both anchovy viscera and fecal material from sea lions exhibiting seizures provides corroborating evidence that this toxic algal species was involved in this unusual sea lion mortality event.

Abundance and vertical flux of Pseudo-nitzschia in the northern Gulf of Mexico

Many species of the ubiquitous pennate diatom genus Pseudo-nitzschia have recently been discovered to produce domoic acid, a potent neurotoxin which causes Amnesic Shellfish Poisoning (ASP).

Autecology of the diatom Pseudonitzschia australis, a domoic acid producer, from Monterey Bay, California

Pseudonitzschia australis Frenguelli has been ~dentified as the domoic acid producer responsible for pelican mortalities and shellfish and other seafood quarantines on the west coast of the United

Concentration and dispersal of a Pseudo-nitzschia bloom in Penn Cove, Washington, USA.

A bloom of the pennate diatom Pseudo-nitzschia, several species of which are associated with the production of the potent excitotoxin domoic acid, was observed in a Puget Sound, Washington embayment in July and August of 1997, aiding in the development of a model for prediction of toxic bloom events in the shallow embayments of Pugetsound.


This is the first confirmed report of DA poisoning since the original 1987 episode in Atlantic Canada caused by Nitzschia pungens Grunow forma multiseries Hasle, and suggests another species of planktonic pennate diatom is capable of producing DA and that herbivorous finfish can act as vectors for this toxin.

Occurrence of domoic acid in Washington state razor clams (Siliqua patula) during 1991-1993.

Analysis of Washington State razor clams for the period from November 1991 to June 1993 indicated that domoic acid levels in the edible portion of the razor clam peaked in December of 1991 and followed a slow decline to the present day low levels (< 5 ppm).

Domoic Acid Toxicity in California Sea Lions ( Zalophus californianus ) Stranded Along the Central California Coast , May-October 1998 Report to the National Marine Fisheries Service Working Group on Unusual Marine Mammal Mortality Events

'This technical memorandum series is used for documentation and timely communication of preliminary results, interim reports, or similar special-purpose information. Although the memoranda are not