Domoic acid and saxitoxin in seabirds from California and Rhode Island 2015-2017
April 13, 2021
As harmful algal blooms (HABs) increase in magnitude and duration worldwide, they are becoming an expanding threat to marine wildlife. Over the past decade, domoic acid (DA) and saxitoxin (STX) have been increasingly problematic bicoastally in the United States. We investigated pooled seabird mortality data from opportunistic sampling events between 2007-2018, across three states, to examine the patterns and role of DA and STX in seabird mortality events from the continental United States. Patterns in DA and STX levels and affected tissue type were reviewed, and two specific accounts of localized and pervasive event types were examined. There has been increased toxin detection with expanded tissue testing during large mortality events. Additionally, there is new evidence of metabolic processing of HAB toxins in seabirds, and the first known account of coincident HAB intoxication (DA and STX) in seabirds is documented. This report contributes qualitative insight into temporal trends and provides recommendations for future research.
Citation Information
Publication Year | 2021 |
---|---|
Title | Domoic acid and saxitoxin in seabirds from California and Rhode Island 2015-2017 |
DOI | 10.5066/P9IVQYN5 |
Authors | Susan Knowles, Barbara L Bodenstein |
Product Type | Data Release |
Record Source | USGS Asset Identifier Service (AIS) |
USGS Organization | National Wildlife Health Center |
Rights | This work is marked with CC0 1.0 Universal |
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Domoic acid and saxitoxin in seabirds in the United States between 2007 and 2018
As harmful algal blooms (HABs) increase in magnitude and duration worldwide, they are becoming an expanding threat to marine wildlife. Over the past decade, blooms of algae that produce the neurotoxins domoic acid (DA) and saxitoxin (STX) and documented concurrent seabird mortality events have increased bicoastally in the United States. We conducted a retrospective analysis of HAB...
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