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| Main Authors: | , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Journal of hazardous materials
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40669348/ |
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| _version_ | 1868266176821329921 |
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| author | Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan |
| author_facet | Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan |
| collection | PubMed - marine biology |
| contents | Toxicity of 6PPD to the stony coral Pocillopora damicornis in different developmental stages. Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan Animals Anthozoa Water Pollutants, Chemical Photosynthesis Larva Phenylenediamines Coral Reefs Human-derived pollutants increasingly threaten coral reefs. The tire-derived hazardous chemical N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and 6PPD quinone were detected in marine ecosystems recently. However, their toxicological effects on coral reef organisms remain poorly understood. This study investigated the toxicity of 6PPD on the reef-building coral Pocillopora damicornis in different developmental stages, including planula larvae, recruits and fragments. Acute toxicity tests were conducted for both 6PPD and 6PPD quinone, followed by the evaluation of the physiological response of growth, development, photosynthesis, and respiration under subacute exposure to low concentrations of 6PPD. Acute tests revealed LC values of 6PPD to coral were 4.63 mg L (larvae), 4.67 mg L (recruits) and 0.68 mg L (fragments), while 6PPD quinone showed no acute high toxicity. Subacute exposure caused larvae developmental abnormalities, recruits growth reduction and fragments calcification decrease. Additionally, 6PPD exposure impaired coral photosynthesis, as indicated by reduced net photosynthetic rates, photosynthetic efficiency (Fv/Fm), algal symbiont density, and chlorophyll a content. These findings highlight the acute and subacute toxicity of 6PPD to reef-building coral in different life stages. Further investigations regarding to the long-term ecotoxicology of 6PPD and 6PPD quinone at low concentration are pressed to evaluate the ecological risk to coral reef ecosystems. |
| format | Artículo científico |
| id | pubmed_40669348 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Journal of hazardous materials |
| record_format | pubmed |
| spellingShingle | Toxicity of 6PPD to the stony coral Pocillopora damicornis in different developmental stages. Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan Animals Anthozoa Water Pollutants, Chemical Photosynthesis Larva Phenylenediamines Coral Reefs Toxicity of 6PPD to the stony coral Pocillopora damicornis in different developmental stages. Yang, Bing Yang, Qingsong Dong, Junde Li, Jie Liu, Shan Zhang, Ying Sun, Huiming Chen, Chang Ling, Juan Animals Anthozoa Water Pollutants, Chemical Photosynthesis Larva Phenylenediamines Coral Reefs Human-derived pollutants increasingly threaten coral reefs. The tire-derived hazardous chemical N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and 6PPD quinone were detected in marine ecosystems recently. However, their toxicological effects on coral reef organisms remain poorly understood. This study investigated the toxicity of 6PPD on the reef-building coral Pocillopora damicornis in different developmental stages, including planula larvae, recruits and fragments. Acute toxicity tests were conducted for both 6PPD and 6PPD quinone, followed by the evaluation of the physiological response of growth, development, photosynthesis, and respiration under subacute exposure to low concentrations of 6PPD. Acute tests revealed LC values of 6PPD to coral were 4.63 mg L (larvae), 4.67 mg L (recruits) and 0.68 mg L (fragments), while 6PPD quinone showed no acute high toxicity. Subacute exposure caused larvae developmental abnormalities, recruits growth reduction and fragments calcification decrease. Additionally, 6PPD exposure impaired coral photosynthesis, as indicated by reduced net photosynthetic rates, photosynthetic efficiency (Fv/Fm), algal symbiont density, and chlorophyll a content. These findings highlight the acute and subacute toxicity of 6PPD to reef-building coral in different life stages. Further investigations regarding to the long-term ecotoxicology of 6PPD and 6PPD quinone at low concentration are pressed to evaluate the ecological risk to coral reef ecosystems. |
| title | Toxicity of 6PPD to the stony coral Pocillopora damicornis in different developmental stages. |
| topic | Animals Anthozoa Water Pollutants, Chemical Photosynthesis Larva Phenylenediamines Coral Reefs |
| url | https://pubmed.ncbi.nlm.nih.gov/40669348/ |