Nitrogenous nutrients promote the growth and toxicity of Dinophysis acuminata during estuarine bloom events.
Open accessAbstract
Diarrhetic Shellfish Poisoning (DSP) is a globally significant human health syndrome most commonly caused by dinoflagellates within the genus Dinophysis. While blooms of harmful algae have frequently been linked to excessive nutrient loading, Dinophysis is a mixotrophic alga whose growth is typically associated with prey availability. Consequently, field studies of Dinophysis and nutrients have been rare. Here, the temporal dynamics of Dinophysis acuminata blooms, DSP toxins, and nutrients (nitrate, ammonium, phosphate, silicate, organic compounds) were examined over four years within two New York estuaries (Meetinghouse Creek and Northport Bay). Further, changes in the abundance and toxicity of D. acuminata were assessed during a series of nutrient amendment experiments performed over a three year period. During the study, Dinophysis acuminata blooms exceeding one million cells L-1 were observed in both estuaries. Highly significant (p<0.001) forward stepwise multivariate regression models of ecosystem observations demonstrated that D. acuminata abundances were positively dependent on multiple environmental parameters including ammonium (p = 0.007) while cellular toxin content was positively dependent on ammonium (p = 0.002) but negatively dependent on nitrate (p<0.001). Nitrogen- (N) and phosphorus- (P) containing inorganic and organic nutrients significantly enhanced D. acuminata densities in nearly all (13 of 14) experiments performed. Ammonium significantly increased cell densities in 10 of 11 experiments, while glutamine significantly enhanced cellular DSP content in 4 of 5 experiments examining this compound. Nutrients may have directly or indirectly enhanced D. acuminata abundances as densities of this mixotroph during experiments were significantly correlated with multiple members of the planktonic community (phytoflagellates and Mesodinium). Collectively, this study demonstrates that nutrient loading and more specifically N-loading promotes the growth and toxicity of D. acuminata populations in coastal zones.
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There recently has been a precedent for blooms of Dinophysis species to intensify in cell concentration and toxicity in New York and New England waters.
“However, there recently has been a precedent for blooms of these species to intensify in cell concentration and toxicity in New York and New England waters (Hattenrath-Lehmann et al., 2013, 2015;J. Deeds, unpublished data).”
From Current and Future Remote Sensing of Harmful Algal Blooms in the Chesapeake Bay to Support the Shellfish Industry (2020) · cites this paper as Hattenrath-Lehmann et al., 2015
The Discussion reports two high-density, toxic Dinophysis acuminata blooms in New York estuaries, and the Introduction suggests that blooms in regions including New York may have become more intense or toxic. The paper does not document that pattern in New England, and its historical comparison is tentative rather than an established increase in both cell concentration and toxicity. Page numbers are unavailable in our copy. (LLM, conf=0.85)
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- Authors
- Hattenrath-Lehmann, T. K., Marcoval, M. A., Mittlesdorf, H., Goleski, J. A., Wang, Z., Haynes, B., Morton, S. L., & Gobler, C. J.
- Affiliations
- Stony Brook University (US)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- National Oceanic and Atmospheric Administration (US)
- Corresponding author
- Hattenrath-Lehmann, Theresa K.
- Marcoval, Maria A.
- Mittlesdorf, Heidi
- Goleski, Jennifer A.
- Wang, Zhihong
- Haynes, Bennie
- Morton, Steve L.
- Gobler, Christopher J.
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2015-04-20
- Volume
- 10
- Issue
- 4
- Pages
- e0124148
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC4403995
- OpenAlex
- W1976877545
- Cited by
- 67
- References
- 79
- Citations by year
- 2026: 6 · 2025: 5 · 2024: 9 · 2023: 8 · 2022: 7 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 6 · 2017: 6 · 2016: 1 · 2015: 1
- FWCI
- 3.44
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- public-domain
- creativecommons.org/publicdomain/zero/1.0/ (vor)
- Locations
- PLoS ONE (publishedVersion, public-domain)
- Europe PMC (PubMed Central) (publishedVersion, public-domain)
- PubMed Central (publishedVersion, public-domain)
- PubMed (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, cc-by-nc-sa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Figshare (submittedVersion, cc-by)
- NOAA Institutional Repository (submittedVersion)
- Funders
- New York Community Trust
- New York State Department of Environmental Conservation
- National Oceanic and Atmospheric Administration (NA11NOS4780027)
- New York Sea Grant, State University of New York (R/CMB-38-NYCT)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Marine Toxins and Detection Methods
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- Dinophysis acuminata, diarrhetic shellfish poisoning, harmful algal blooms, nitrogen loading, ammonium, nitrate, phosphate, silicate, glutamine, mixotrophic dinoflagellates, estuarine nutrient dynamics, Mesodinium, phytoflagellates, toxin production
- MeSH terms
- Dinoflagellida, Food, Humans, Marine Toxins, Nitrogen, Ecosystem, Estuaries
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