Sampling for Paralytic Shellfish Poisoning in commercial and recreational shellfish areas in Washington state marine waters, 1957 - 1988 (NODC Accession 0000597)

Metadata Updated: February 27, 2019

The state of Washington routinely experiences seasonal restrictions on commercial and recreational shellfish harvest due to two toxic phytoplankton syndromes, Paralytic Shellfish Poisoning (PSP) and Amnesiac Shellfish Poisoning (ASP), which is often referred to as Domoic Acid Poisoning (DAP). The biotoxin that causes PSP temporarily interferes with the transmission of nerve impulses in warm-blooded animals, causing symptoms in humans such as, numbness and tingling of the lips, tongue, face and extremities, difficulty talking ,breathing, swallowing and muscle incoordinations. Symptoms develop quickly (within 1-2 hours of consumption) and can result in death. The species that causes PSP in Washington state marine waters is Alexandrium catenella. Alexandrium is usually present in small numbers; however, when environmental conditions are optimum, rapid reproduction occurs. Filter-feeding shellfish can accumulate the toxins to dangerous levels during these "blooms". Domoic acid poisoning is caused by eating fish, shellfish or crab containing the toxin. Symptoms include vomiting, nausea, diarrhea and abdominal cramps within 24 hours of digestion. In severe cases, neurological sysmtoms develop within 48 hours and include headache, dizziness, confusion, disorientation, loss of short-term memory, motor weakness, seizures, profuse respiratory secretions, cardiac arrhythmias, coma and possibly death. Domoic acid produced by marine diatoms of the genus Pseudo-nitzchia, was first detected on the Pacific coast in 1991 when several pelican and cormorant deaths were link to domoic acid in anchovies. Therefore, this data set only contains PSP data for 1957-1988. The Washington State Department of Health routinely monitors for PSP and ASP in shellfish from areas throughout the state. Areas are closed for harvest of molluscan shellfish when PSP toxin levels are equal to or exceed 80 ug toxin/100 grams shellfish tissue. Molluscan shellfish areas are closed when domoic acid (DA) levels reach 15 ppm in a composite sample of six shellfish (this level was changed to 20 ppm in 2001), whereas Dungeness crab areas are closed when DA levels reach 30 ppm in three of six individual crab viscera.

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Dates

Metadata Date November 18, 2016
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 6, 2011 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date November 18, 2016
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 6, 2011 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Adams, Nicolaus; Washington State Department of Health (2011). Sampling for Paralytic Shellfish Poisoning in commercial and recreational shellfish areas in Washington state marine waters, 1957 - 1988 (NODC Accession 0000597). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. [access date], NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -122.217
Bbox North Lat 48.9903
Bbox South Lat 46.30074
Bbox West Long -124.76
Coupled Resource
Frequency Of Update asNeeded
Guid gov.noaa.nodc:0000597
Harvest Object Id 63da1ed2-7cf6-40f3-8f3b-6cc8f5a5ff9b
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1957-06-26
Temporal Extent End 1988-12-31

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