Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments
Microplastics (MPs, ＜5mm in size) have rapidly spread across aquatic ecosystems, which urgently needs systematic assessment for their ecological risk. Fish species have frequently been selected as indicator organisms in evaluating MPs contaminants. However, it has been questioned that which organs o...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X24012494 |
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| author | Zhe Wang Sibao Chen Yiwei He Le Liang Zhongguan Jiang |
| author_facet | Zhe Wang Sibao Chen Yiwei He Le Liang Zhongguan Jiang |
| author_sort | Zhe Wang |
| collection | DOAJ |
| description | Microplastics (MPs, ＜5mm in size) have rapidly spread across aquatic ecosystems, which urgently needs systematic assessment for their ecological risk. Fish species have frequently been selected as indicator organisms in evaluating MPs contaminants. However, it has been questioned that which organs of fishes should be examined due to tissue-specific results. In this study, we investigated the accumulation and depuration process of MPs in the main organs of zebrafish under different MPs concentrations as well as the presence and absence of food resources. Our results recorded consistently higher MPs accumulation in fish guts among different MPs concentrations, implying fish guts as stable organs representing organisms’ MPs contaminants. Meanwhile, MPs accumulated in fish guts increased significantly with increasing exposure concentrations, highlighting fish guts as sensitive organs in reflecting MPs contamination in aquatic environments. In addition, MPs accumulated in fish guts under non-feeding conditions followed a logistic “S” curve while fluctuated under feeding conditions, suggesting increased ecological MPs risk with the absence of food resources. The depuration rate in fish guts was significantly higher in the feeding group than in the non-feeding group, implying better expelling ability of MPs with the presence of food resources. Our study proposes fish guts as the optimal indicator organs in assessing the ecological risk of MPs contaminants in both fish bodies and aquatic environments, and highlights the importance of sustaining sufficient food resources in aquatic environments to reduce the MPs triggered adverse effects on fish species. |
| format | Article |
| id | doaj-art-050832bb77054d8da50aafd68f24a852 |
| institution | Kabale University |
| issn | 1470-160X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj-art-050832bb77054d8da50aafd68f24a8522024-11-11T04:25:14ZengElsevierEcological Indicators1470-160X2024-11-01168112792Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environmentsZhe Wang0Sibao Chen1Yiwei He2Le Liang3Zhongguan Jiang4School of Resources and Environmental Engineering, Anhui University, Hefei 230601, ChinaChangjiang Institute of Survey Planning Design and Research, Key Laboratory of Changjiang Regulation and Protection of Ministry of Water Resources, Wuhan 430010, ChinaSchool of Resources and Environmental Engineering, Anhui University, Hefei 230601, ChinaSchool of Resources and Environmental Engineering, Anhui University, Hefei 230601, ChinaSchool of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration, Anhui University, Hefei 230601, China; Anhui Shengjin Lake wetland ecology national long-term scientific research base, Dongzhi 247230, China; Corresponding author.Microplastics (MPs, ＜5mm in size) have rapidly spread across aquatic ecosystems, which urgently needs systematic assessment for their ecological risk. Fish species have frequently been selected as indicator organisms in evaluating MPs contaminants. However, it has been questioned that which organs of fishes should be examined due to tissue-specific results. In this study, we investigated the accumulation and depuration process of MPs in the main organs of zebrafish under different MPs concentrations as well as the presence and absence of food resources. Our results recorded consistently higher MPs accumulation in fish guts among different MPs concentrations, implying fish guts as stable organs representing organisms’ MPs contaminants. Meanwhile, MPs accumulated in fish guts increased significantly with increasing exposure concentrations, highlighting fish guts as sensitive organs in reflecting MPs contamination in aquatic environments. In addition, MPs accumulated in fish guts under non-feeding conditions followed a logistic “S” curve while fluctuated under feeding conditions, suggesting increased ecological MPs risk with the absence of food resources. The depuration rate in fish guts was significantly higher in the feeding group than in the non-feeding group, implying better expelling ability of MPs with the presence of food resources. Our study proposes fish guts as the optimal indicator organs in assessing the ecological risk of MPs contaminants in both fish bodies and aquatic environments, and highlights the importance of sustaining sufficient food resources in aquatic environments to reduce the MPs triggered adverse effects on fish species.http://www.sciencedirect.com/science/article/pii/S1470160X24012494MicroplasticsFishAccumulationDepurationIndicator organs |
| spellingShingle | Zhe Wang Sibao Chen Yiwei He Le Liang Zhongguan Jiang Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments Ecological Indicators Microplastics Fish Accumulation Depuration Indicator organs |
| title | Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| title_full | Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| title_fullStr | Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| title_full_unstemmed | Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| title_short | Fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| title_sort | fish guts possess higher priority in assessing ecological risk of microplastics in both fish bodies and aquatic environments |
| topic | Microplastics Fish Accumulation Depuration Indicator organs |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X24012494 |
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