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Acute and chronic toxicity of manganese to tropical adult coral (Acropora millepora) to support the derivation of marine manganese water quality guideline values
Journal article   Open access   Peer reviewed

Acute and chronic toxicity of manganese to tropical adult coral (Acropora millepora) to support the derivation of marine manganese water quality guideline values

Lisa A. Golding, Monique T. Binet, Merrin S. Adams, Justin Hochen, Craig A. Humphrey, Gwilym A.V. Price, Amanda J. Reichelt-Brushett, Matthew Salmon and Jenny L. Stauber
Marine pollution bulletin, Vol.194(B), 115242
09/2023
DOI: https://doi.org/10.1016/j.marpolbul.2023.115242
PMID: 37453169
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Acute and chronic toxicity of manganese to tropical adult coral (Acropora millepora) to support the derivation of marine manganese water quality guideline values2.95 MBDownloadView
Published (Version of record)CC BY-NC-ND V4.0,  Open Access
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Acute and chronic toxicity of manganese to tropical adult coral (Acropora millepora) to support the derivation of marine manganese water quality guideline valuesView
Published (Version of record)CC BY-NC-ND V4.0,  Open

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Abstract

Burrlioz Criteria Critical metal Mesenterial filament Necrosis ssdtools
Adult corals are among the most sensitive marine organisms to dissolved manganese and experience tissue sloughing without bleaching (i.e., no loss of Symbiodinium spp.) but there are no chronic toxicity data for this sensitive endpoint. We exposed adult Acropora millepora to manganese in 2-d acute and 14-d chronic experiments using tissue sloughing as the toxicity endpoint. The acute tissue sloughing median effect concentration (EC50) was 2560 μg Mn/L. There was no chronic toxicity to A. millepora at concentrations up to and including the highest concentration of 1090 μg Mn/L i.e., the chronic no observed effect concentration (NOEC). A coral-specific acute-to-chronic ratio (ACR) (EC50/NOEC) of 2.3 was derived. These data were combined with chronic toxicity data for other marine organisms in a species sensitivity distribution (SSD). Marine manganese guidelines were 190, 300, 390 and 570 μg Mn/L to provide long-term protection of 99, 95, 90, and 80 % of marine species, respectively.

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