Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast
The toxic diatom genus Pseudo-nitzschia is distributed from equatorial to polar regions and is comprised of >57 species, some capable of producing the neurotoxin domoic acid (DA). In the Pacific Arctic Region spanning the Bering, Chukchi, and Beaufort seas, DA is recognized as an emerging human a...
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ftdoajarticles:oai:doaj.org/article:ae7a31552cb24305b5e2397fb5af3b5f 2023-05-15T15:00:58+02:00 Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast Katherine A. Hubbard Maria Célia Villac Christina Chadwick Alexandra A. DeSmidt Leanne Flewelling April Granholm Molly Joseph Taylor Wood Evangeline Fachon Michael L. Brosnahan Mindy Richlen Mrunmayee Pathare Dean Stockwell Peigen Lin Josée N. Bouchard Robert Pickart Donald M. Anderson 2023-01-01T00:00:00Z https://doaj.org/article/ae7a31552cb24305b5e2397fb5af3b5f EN eng Public Library of Science (PLoS) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10032537/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 https://doaj.org/article/ae7a31552cb24305b5e2397fb5af3b5f PLoS ONE, Vol 18, Iss 3 (2023) Medicine R Science Q article 2023 ftdoajarticles 2023-03-26T01:30:10Z The toxic diatom genus Pseudo-nitzschia is distributed from equatorial to polar regions and is comprised of >57 species, some capable of producing the neurotoxin domoic acid (DA). In the Pacific Arctic Region spanning the Bering, Chukchi, and Beaufort seas, DA is recognized as an emerging human and ecosystem health threat, yet little is known about the composition and distribution of Pseudo-nitzschia species in these waters. This investigation characterized Pseudo-nitzschia assemblages in samples collected in 2018 during summer (August) and fall (October-November) surveys as part of the Distributed Biological Observatory and Arctic Observing Network, encompassing a broad geographic range (57.8° to 73.0°N, -138.9° to -169.9°W) and spanning temperature (-1.79 to 11.7°C) and salinity (22.9 to 32.9) gradients associated with distinct water masses. Species were identified using a genus-specific Automated Ribosomal Intergenic Spacer Analysis (ARISA). Seventeen amplicons were observed; seven corresponded to temperate, sub-polar, or polar Pseudo-nitzschia species based on parallel sequencing efforts (P. arctica, P. delicatissima, P. granii, P. obtusa, P. pungens, and two genotypes of P. seriata), and one represented Fragilariopsis oceanica. During summer, particulate DA (pDA; 4.0 to 130.0 ng L-1) was observed in the Bering Strait and Chukchi Sea where P. obtusa was prevalent. In fall, pDA (3.3 to 111.8 ng L-1) occurred along the Beaufort Sea shelf coincident with one P. seriata genotype, and south of the Bering Strait in association with the other P. seriata genotype. Taxa were correlated with latitude, longitude, temperature, salinity, pDA, and/or chlorophyll a, and each had a distinct distribution pattern. The observation of DA in association with different species, seasons, geographic regions, and water masses underscores the significant risk of Amnesic Shellfish Poisoning (ASP) and DA-poisoning in Alaska waters. Article in Journal/Newspaper Arctic Beaufort Sea Bering Strait Chukchi Chukchi Sea Pacific Arctic Alaska Directory of Open Access Journals: DOAJ Articles Arctic Bering Strait Chukchi Sea Pacific |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Katherine A. Hubbard Maria Célia Villac Christina Chadwick Alexandra A. DeSmidt Leanne Flewelling April Granholm Molly Joseph Taylor Wood Evangeline Fachon Michael L. Brosnahan Mindy Richlen Mrunmayee Pathare Dean Stockwell Peigen Lin Josée N. Bouchard Robert Pickart Donald M. Anderson Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
topic_facet |
Medicine R Science Q |
description |
The toxic diatom genus Pseudo-nitzschia is distributed from equatorial to polar regions and is comprised of >57 species, some capable of producing the neurotoxin domoic acid (DA). In the Pacific Arctic Region spanning the Bering, Chukchi, and Beaufort seas, DA is recognized as an emerging human and ecosystem health threat, yet little is known about the composition and distribution of Pseudo-nitzschia species in these waters. This investigation characterized Pseudo-nitzschia assemblages in samples collected in 2018 during summer (August) and fall (October-November) surveys as part of the Distributed Biological Observatory and Arctic Observing Network, encompassing a broad geographic range (57.8° to 73.0°N, -138.9° to -169.9°W) and spanning temperature (-1.79 to 11.7°C) and salinity (22.9 to 32.9) gradients associated with distinct water masses. Species were identified using a genus-specific Automated Ribosomal Intergenic Spacer Analysis (ARISA). Seventeen amplicons were observed; seven corresponded to temperate, sub-polar, or polar Pseudo-nitzschia species based on parallel sequencing efforts (P. arctica, P. delicatissima, P. granii, P. obtusa, P. pungens, and two genotypes of P. seriata), and one represented Fragilariopsis oceanica. During summer, particulate DA (pDA; 4.0 to 130.0 ng L-1) was observed in the Bering Strait and Chukchi Sea where P. obtusa was prevalent. In fall, pDA (3.3 to 111.8 ng L-1) occurred along the Beaufort Sea shelf coincident with one P. seriata genotype, and south of the Bering Strait in association with the other P. seriata genotype. Taxa were correlated with latitude, longitude, temperature, salinity, pDA, and/or chlorophyll a, and each had a distinct distribution pattern. The observation of DA in association with different species, seasons, geographic regions, and water masses underscores the significant risk of Amnesic Shellfish Poisoning (ASP) and DA-poisoning in Alaska waters. |
format |
Article in Journal/Newspaper |
author |
Katherine A. Hubbard Maria Célia Villac Christina Chadwick Alexandra A. DeSmidt Leanne Flewelling April Granholm Molly Joseph Taylor Wood Evangeline Fachon Michael L. Brosnahan Mindy Richlen Mrunmayee Pathare Dean Stockwell Peigen Lin Josée N. Bouchard Robert Pickart Donald M. Anderson |
author_facet |
Katherine A. Hubbard Maria Célia Villac Christina Chadwick Alexandra A. DeSmidt Leanne Flewelling April Granholm Molly Joseph Taylor Wood Evangeline Fachon Michael L. Brosnahan Mindy Richlen Mrunmayee Pathare Dean Stockwell Peigen Lin Josée N. Bouchard Robert Pickart Donald M. Anderson |
author_sort |
Katherine A. Hubbard |
title |
Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
title_short |
Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
title_full |
Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
title_fullStr |
Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
title_full_unstemmed |
Spatiotemporal transitions in Pseudo-nitzschia species assemblages and domoic acid along the Alaska coast |
title_sort |
spatiotemporal transitions in pseudo-nitzschia species assemblages and domoic acid along the alaska coast |
publisher |
Public Library of Science (PLoS) |
publishDate |
2023 |
url |
https://doaj.org/article/ae7a31552cb24305b5e2397fb5af3b5f |
geographic |
Arctic Bering Strait Chukchi Sea Pacific |
geographic_facet |
Arctic Bering Strait Chukchi Sea Pacific |
genre |
Arctic Beaufort Sea Bering Strait Chukchi Chukchi Sea Pacific Arctic Alaska |
genre_facet |
Arctic Beaufort Sea Bering Strait Chukchi Chukchi Sea Pacific Arctic Alaska |
op_source |
PLoS ONE, Vol 18, Iss 3 (2023) |
op_relation |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10032537/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 https://doaj.org/article/ae7a31552cb24305b5e2397fb5af3b5f |
_version_ |
1766333022718656512 |