Establishing tolerable dungeness crab (Cancer magister) and razor clam (Siliqua patula) domoic acid contaminant levels.

Characterization of a domoic acid binding site from Pacific razor clam.

The Pacific razor clam, Siliqua patula, is known to retain domoic acid, a water-soluble glutamate receptor agonist produced by diatoms of the genus Pseudo-nitzschia. The mechanism by which razor clams tolerate high levels of the toxin, domoic acid, in their tissues while still retaining normal nerve function is unknown. In our study, a domoic acid binding site was solubilized from razor clam si...

Restoration of Razor Clam (Siliqua patula) Populations In Southeastern Prince William Sound, Alaska: Integrating Science, Management & Traditional Knowledge in the Development of a Restoration Strategy Final Report to: Partners for Fish Wildlife Coastal Program

An unprecedented coastwide toxic algal bloom linked to anomalous ocean conditions

A coastwide bloom of the toxigenic diatom Pseudo-nitzschia in spring 2015 resulted in the largest recorded outbreak of the neurotoxin, domoic acid, along the North American west coast. Elevated toxins were measured in numerous stranded marine mammals and resulted in geographically extensive and prolonged closures of razor clam, rock crab, and Dungeness crab fisheries. We demonstrate that this o...

Evaluating the population genetic structure of Dungeness crab (Cancer magister) off the Oregon coast

Comparison of enzyme activities linked to acid–base regulation in a deep-sea and a sublittoral decapod crab species

When compared to the sublittoral Dungeness crab Cancer magister, the deep-sea Tanner crab Chionoecetes tanneri exhibited lower activities of enzymes involved in some of the processes essential for efficient acid–base regulation. Tissue enzymatic activities were compared between Dungeness crabs held in normoxia and Tanner crabs held in hypoxia—both treatments mimicking typical habitat oxygen lev...