Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment
Current climate trends resulting in rapid declines in sea ice and increasing water temperatures are likely to expand the northern geographic range and duration of favorable conditions for harmful algal blooms (HABs), making algal toxins a growing concern in Alaskan marine food webs. Two of the most...
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ftpubmed:oai:pubmedcentral.nih.gov:8276754 2023-05-15T15:14:15+02:00 Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment Lefebvre, Kathi A. Quakenbush, Lori Frame, Elizabeth Huntington, Kathy Burek Sheffield, Gay Stimmelmayr, Raphaela Bryan, Anna Kendrick, Preston Ziel, Heather Goldstein, Tracey Snyder, Jonathan A. Gelatt, Tom Gulland, Frances Dickerson, Bobette Gill, Verena 2016-02-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276754/ http://www.ncbi.nlm.nih.gov/pubmed/28073526 https://doi.org/10.1016/j.hal.2016.01.007 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276754/ http://www.ncbi.nlm.nih.gov/pubmed/28073526 http://dx.doi.org/10.1016/j.hal.2016.01.007 Harmful Algae Article Text 2016 ftpubmed https://doi.org/10.1016/j.hal.2016.01.007 2021-07-18T00:42:29Z Current climate trends resulting in rapid declines in sea ice and increasing water temperatures are likely to expand the northern geographic range and duration of favorable conditions for harmful algal blooms (HABs), making algal toxins a growing concern in Alaskan marine food webs. Two of the most common HAB toxins along the west coast of North America are the neurotoxins domoic acid (DA) and saxitoxin (STX). Over the last 20 years, DA toxicosis has caused significant illness and mortality in marine mammals along the west coast of the USA, but has not been reported to impact marine mammals foraging in Alaskan waters. Saxitoxin, the most potent of the paralytic shellfish poisoning toxins, has been well-documented in shellfish in the Aleutians and Gulf of Alaska for decades and associated with human illnesses and deaths due to consumption of toxic clams. There is little information regarding exposure of Alaskan marine mammals. Here, the spatial patterns and prevalence of DA and STX exposure in Alaskan marine mammals are documented in order to assess health risks to northern populations including those species that are important to the nutritional, cultural, and economic well-being of Alaskan coastal communities. In this study, 905 marine mammals from 13 species were sampled including; humpback whales, bowhead whales, beluga whales, harbor porpoises, Northern fur seals, Steller sea lions, harbor seals, ringed seals, bearded seals, spotted seals, ribbon seals, Pacific walruses, and northern sea otters. Domoic acid was detected in all 13 species examined and had the greatest prevalence in bowhead whales (68%) and harbor seals (67%). Saxitoxin was detected in 10 of the 13 species, with the highest prevalence in humpback whales (50%) and bowhead whales (32%). Pacific walruses contained the highest concentrations of both STX and DA, with DA concentrations similar to those detected in California sea lions exhibiting clinical signs of DA toxicosis (seizures) off the coast of Central California, USA. Forty-six individual ... Text Arctic Beluga Beluga* Sea ice Subarctic Alaska walrus* PubMed Central (PMC) Arctic Gulf of Alaska Pacific Harmful Algae 55 13 24 |
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Article Lefebvre, Kathi A. Quakenbush, Lori Frame, Elizabeth Huntington, Kathy Burek Sheffield, Gay Stimmelmayr, Raphaela Bryan, Anna Kendrick, Preston Ziel, Heather Goldstein, Tracey Snyder, Jonathan A. Gelatt, Tom Gulland, Frances Dickerson, Bobette Gill, Verena Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
topic_facet |
Article |
description |
Current climate trends resulting in rapid declines in sea ice and increasing water temperatures are likely to expand the northern geographic range and duration of favorable conditions for harmful algal blooms (HABs), making algal toxins a growing concern in Alaskan marine food webs. Two of the most common HAB toxins along the west coast of North America are the neurotoxins domoic acid (DA) and saxitoxin (STX). Over the last 20 years, DA toxicosis has caused significant illness and mortality in marine mammals along the west coast of the USA, but has not been reported to impact marine mammals foraging in Alaskan waters. Saxitoxin, the most potent of the paralytic shellfish poisoning toxins, has been well-documented in shellfish in the Aleutians and Gulf of Alaska for decades and associated with human illnesses and deaths due to consumption of toxic clams. There is little information regarding exposure of Alaskan marine mammals. Here, the spatial patterns and prevalence of DA and STX exposure in Alaskan marine mammals are documented in order to assess health risks to northern populations including those species that are important to the nutritional, cultural, and economic well-being of Alaskan coastal communities. In this study, 905 marine mammals from 13 species were sampled including; humpback whales, bowhead whales, beluga whales, harbor porpoises, Northern fur seals, Steller sea lions, harbor seals, ringed seals, bearded seals, spotted seals, ribbon seals, Pacific walruses, and northern sea otters. Domoic acid was detected in all 13 species examined and had the greatest prevalence in bowhead whales (68%) and harbor seals (67%). Saxitoxin was detected in 10 of the 13 species, with the highest prevalence in humpback whales (50%) and bowhead whales (32%). Pacific walruses contained the highest concentrations of both STX and DA, with DA concentrations similar to those detected in California sea lions exhibiting clinical signs of DA toxicosis (seizures) off the coast of Central California, USA. Forty-six individual ... |
format |
Text |
author |
Lefebvre, Kathi A. Quakenbush, Lori Frame, Elizabeth Huntington, Kathy Burek Sheffield, Gay Stimmelmayr, Raphaela Bryan, Anna Kendrick, Preston Ziel, Heather Goldstein, Tracey Snyder, Jonathan A. Gelatt, Tom Gulland, Frances Dickerson, Bobette Gill, Verena |
author_facet |
Lefebvre, Kathi A. Quakenbush, Lori Frame, Elizabeth Huntington, Kathy Burek Sheffield, Gay Stimmelmayr, Raphaela Bryan, Anna Kendrick, Preston Ziel, Heather Goldstein, Tracey Snyder, Jonathan A. Gelatt, Tom Gulland, Frances Dickerson, Bobette Gill, Verena |
author_sort |
Lefebvre, Kathi A. |
title |
Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
title_short |
Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
title_full |
Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
title_fullStr |
Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
title_full_unstemmed |
Prevalence of Algal Toxins in Alaskan Marine Mammals Foraging in a Changing Arctic and Subarctic Environment |
title_sort |
prevalence of algal toxins in alaskan marine mammals foraging in a changing arctic and subarctic environment |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276754/ http://www.ncbi.nlm.nih.gov/pubmed/28073526 https://doi.org/10.1016/j.hal.2016.01.007 |
geographic |
Arctic Gulf of Alaska Pacific |
geographic_facet |
Arctic Gulf of Alaska Pacific |
genre |
Arctic Beluga Beluga* Sea ice Subarctic Alaska walrus* |
genre_facet |
Arctic Beluga Beluga* Sea ice Subarctic Alaska walrus* |
op_source |
Harmful Algae |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8276754/ http://www.ncbi.nlm.nih.gov/pubmed/28073526 http://dx.doi.org/10.1016/j.hal.2016.01.007 |
op_doi |
https://doi.org/10.1016/j.hal.2016.01.007 |
container_title |
Harmful Algae |
container_volume |
55 |
container_start_page |
13 |
op_container_end_page |
24 |
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1766344722347982848 |