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| Main Authors: | , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Environmental science & technology
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40167463/ |
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| _version_ | 1868266223128543233 |
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| author | Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing |
| author_facet | Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing |
| collection | PubMed - marine biology |
| contents | Impact of Microplastic Exposure on Sand Crab Behavior: Implications for Microplastic Transport and Sulfur Cycling through Bioturbation. Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing Animals Microplastics Geologic Sediments Sulfur Brachyura Water Pollutants, Chemical The accumulation of microplastics (MPs) in estuarine regions and their ecological consequences have become global environmental concerns. Estuarine sediments function as major sinks for MPs and hotspots for critical biogeochemical processes, which are significantly influenced by benthic bioturbation. However, the impacts of MPs on the behavior of highly mobile benthic organisms and the ecological effects of bioturbation activities remain poorly understood. This study utilized laboratory simulation experiments, AI-based behavioral tracking, and metagenomic sequencing to systematically examine the effects of sand crab bioturbation on MPs migration, sediment physicochemical properties and sulfur cycling processes. Results demonstrated that sand crab bioturbation substantially enhanced the vertical migration of MPs, with fluxes to surface layers and the overlying water increasing by 27-fold compared to undisturbed conditions. Exposure to PE-MPs reduced sand crabs' surface foraging intensity and induced behavioral abnormalities. The crabs actively avoided MPs, exhibiting a preference for burrowing and residing in deeper sediment layers. This behavioral shift significantly altered microbial community distributions, with an increase of abundance and a decline of sulfate-reducing bacteria abundance. Furthermore, bioturbation accelerated sulfate oxidation in deeper sediments while inhibited dissimilatory sulfate reduction. This study is the first to identify the role of bioturbation in promoting the upward migration of MPs in sediments. Altered sand crab bioturbation will impact sediment biogeochemistry, estuarine function, and coastal resilience. |
| format | Artículo científico |
| id | pubmed_40167463 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Environmental science & technology |
| record_format | pubmed |
| spellingShingle | Impact of Microplastic Exposure on Sand Crab Behavior: Implications for Microplastic Transport and Sulfur Cycling through Bioturbation. Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing Animals Microplastics Geologic Sediments Sulfur Brachyura Water Pollutants, Chemical Impact of Microplastic Exposure on Sand Crab Behavior: Implications for Microplastic Transport and Sulfur Cycling through Bioturbation. Sun, Chaofan Liu, Hui Teng, Jia Feng, Weiwei Wang, Dongyu Wang, Xiaodan Zhao, Jianmin Wang, Qing Animals Microplastics Geologic Sediments Sulfur Brachyura Water Pollutants, Chemical The accumulation of microplastics (MPs) in estuarine regions and their ecological consequences have become global environmental concerns. Estuarine sediments function as major sinks for MPs and hotspots for critical biogeochemical processes, which are significantly influenced by benthic bioturbation. However, the impacts of MPs on the behavior of highly mobile benthic organisms and the ecological effects of bioturbation activities remain poorly understood. This study utilized laboratory simulation experiments, AI-based behavioral tracking, and metagenomic sequencing to systematically examine the effects of sand crab bioturbation on MPs migration, sediment physicochemical properties and sulfur cycling processes. Results demonstrated that sand crab bioturbation substantially enhanced the vertical migration of MPs, with fluxes to surface layers and the overlying water increasing by 27-fold compared to undisturbed conditions. Exposure to PE-MPs reduced sand crabs' surface foraging intensity and induced behavioral abnormalities. The crabs actively avoided MPs, exhibiting a preference for burrowing and residing in deeper sediment layers. This behavioral shift significantly altered microbial community distributions, with an increase of abundance and a decline of sulfate-reducing bacteria abundance. Furthermore, bioturbation accelerated sulfate oxidation in deeper sediments while inhibited dissimilatory sulfate reduction. This study is the first to identify the role of bioturbation in promoting the upward migration of MPs in sediments. Altered sand crab bioturbation will impact sediment biogeochemistry, estuarine function, and coastal resilience. |
| title | Impact of Microplastic Exposure on Sand Crab Behavior: Implications for Microplastic Transport and Sulfur Cycling through Bioturbation. |
| topic | Animals Microplastics Geologic Sediments Sulfur Brachyura Water Pollutants, Chemical |
| url | https://pubmed.ncbi.nlm.nih.gov/40167463/ |