Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus
The baking industries and disinfection of tap water released a considerable amount of bromate into surface water, which has been reported as a carcinogenic compound to mammals. Rotifers play an important role in freshwater ecosystems and are model organisms to assess environmental contamination. In...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651320315426 |
| _version_ | 1818925678951661568 |
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| author | Xiao-Ping Xu Tao Chen Xue-Yu Wei Xiao-Fan Yang Yi-Long Xi Xing-Ming Wang |
| author_facet | Xiao-Ping Xu Tao Chen Xue-Yu Wei Xiao-Fan Yang Yi-Long Xi Xing-Ming Wang |
| author_sort | Xiao-Ping Xu |
| collection | DOAJ |
| description | The baking industries and disinfection of tap water released a considerable amount of bromate into surface water, which has been reported as a carcinogenic compound to mammals. Rotifers play an important role in freshwater ecosystems and are model organisms to assess environmental contamination. In the present study, the effects of different concentrations (0.001, 0.01, 0.1, 1, 10, 100 and 200 mg/L) of bromate on the life-table and population growth parameters were investigated in the rotifer Brachionus calyciflorus. The results showed that the 24-h LC50 of bromate to B. calyciflorus was 365.29 mg/L (95%Cl: 290.37–480.24). Treatments with 0.01, 10 and 200 mg/L bromate shorten the reproductive period. High levels of bromate (100 and 200 mg/L) significantly decreased net reproductive rate, intrinsic rate of population increase, life span, mictic rate of B. calyciflorus. To investigate the underlying mechanisms, swimming speed and antioxidative biomarkers were compared between bromate treatments and the control. The results showed that glutathione (GSH) and malondialdehyde (MDA) contents, total superoxide dismutase (T-SOD) and peroxidase (POD) activities decreased significantly in response to bromate exposure and the reasons required further investigation. Treatments with 0.001–200 mg/L bromate all significantly reduced swimming linear speed to rotifer larvae and treatments with 100–200 mg/L bromate significantly suppressed the swimming linear speed of adult rotifer. These changes would reduce filtration of algal food and could explain the decreased survival and reproduction. Overall, bromate may not show acute toxicity to rotifers, but still have potential adverse effects on rotifer behavior, which may then influence the community structure in aquatic ecosystems. |
| first_indexed | 2024-12-20T02:45:03Z |
| format | Article |
| id | doaj.art-c16dbf0d645c4df5ab06519545319473 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-20T02:45:03Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-c16dbf0d645c4df5ab065195453194732022-12-21T19:56:13ZengElsevierEcotoxicology and Environmental Safety0147-65132021-01-01208111705Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorusXiao-Ping Xu0Tao Chen1Xue-Yu Wei2Xiao-Fan Yang3Yi-Long Xi4Xing-Ming Wang5College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China; Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241000, China; Corresponding author at: College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, ChinaCollege of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, ChinaCollege of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, China; Corresponding author.College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu 241000, ChinaCenter of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu 241000, China; College of Life Sciences, Anhui Normal University, Wuhu 241000, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaThe baking industries and disinfection of tap water released a considerable amount of bromate into surface water, which has been reported as a carcinogenic compound to mammals. Rotifers play an important role in freshwater ecosystems and are model organisms to assess environmental contamination. In the present study, the effects of different concentrations (0.001, 0.01, 0.1, 1, 10, 100 and 200 mg/L) of bromate on the life-table and population growth parameters were investigated in the rotifer Brachionus calyciflorus. The results showed that the 24-h LC50 of bromate to B. calyciflorus was 365.29 mg/L (95%Cl: 290.37–480.24). Treatments with 0.01, 10 and 200 mg/L bromate shorten the reproductive period. High levels of bromate (100 and 200 mg/L) significantly decreased net reproductive rate, intrinsic rate of population increase, life span, mictic rate of B. calyciflorus. To investigate the underlying mechanisms, swimming speed and antioxidative biomarkers were compared between bromate treatments and the control. The results showed that glutathione (GSH) and malondialdehyde (MDA) contents, total superoxide dismutase (T-SOD) and peroxidase (POD) activities decreased significantly in response to bromate exposure and the reasons required further investigation. Treatments with 0.001–200 mg/L bromate all significantly reduced swimming linear speed to rotifer larvae and treatments with 100–200 mg/L bromate significantly suppressed the swimming linear speed of adult rotifer. These changes would reduce filtration of algal food and could explain the decreased survival and reproduction. Overall, bromate may not show acute toxicity to rotifers, but still have potential adverse effects on rotifer behavior, which may then influence the community structure in aquatic ecosystems.http://www.sciencedirect.com/science/article/pii/S0147651320315426Brachionus calyciflorusBromateLife history, swimming speedAntioxidant |
| spellingShingle | Xiao-Ping Xu Tao Chen Xue-Yu Wei Xiao-Fan Yang Yi-Long Xi Xing-Ming Wang Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus Ecotoxicology and Environmental Safety Brachionus calyciflorus Bromate Life history, swimming speed Antioxidant |
| title | Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus |
| title_full | Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus |
| title_fullStr | Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus |
| title_full_unstemmed | Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus |
| title_short | Effects of bromate on life history parameters, swimming speed and antioxidant biomarkers in Brachionus calyciflorus |
| title_sort | effects of bromate on life history parameters swimming speed and antioxidant biomarkers in brachionus calyciflorus |
| topic | Brachionus calyciflorus Bromate Life history, swimming speed Antioxidant |
| url | http://www.sciencedirect.com/science/article/pii/S0147651320315426 |
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