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| Joint toxicity of binary complexes of cartap, spirotetramat, copper, and cadmium to Vibrio fischeri |
| Received:December 18, 2018 |
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| KeyWord:heavy metals;pesticide;Vibrio fischeri;acute toxicity;joint toxicity evaluation |
| Author Name | Affiliation | E-mail | | YIN Hong-yang | College of Environment & Safety Engineering, Changzhou University, Changzhou 213164, China
Zhejiang Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China | | | ZHAO Yuan | College of Environment & Safety Engineering, Changzhou University, Changzhou 213164, China | | | ZHENG Yi | Jiangsu Agri-animal Husbandry Vocational College, Taizhou 225300, China | | | BAO Cong | Zhejiang Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China
Wageningen University, Marine Animal Ecology Group, De Elst 1, Wageningen 6708 WD, The Netherlands | | | HUANG Xin-xin | Shanghai Entry-Exit Inspection and Quarantine Bureau, Technology Center Animal, Plant and Food Inspection and Quarantine, Shanghai 200135, China | | | DING Ying-jie | Zhejiang Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China | | | CAI Qiang | Zhejiang Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China | caiq@mail.tsinghua.edu.cn |
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| Abstract: |
| In view of the widespread use of cartap, spirotetramat, and common heavy metal pollutants, such as copper and cadmium in agricultural activities, the joint toxicity of their complexes on Vibrio fischeri was studied. The EC50 (median effective concentration)was calculated with the acute toxic effects of binary complex contamination on Vibrio fischeri employing different exposure times. The Mixtures Toxicity Index method was employed to evaluate the joint toxicity. The acute toxicity experiments showed that the EC50 of copper, cadmium, cartap, and spirotetramat on Vibrio fischeri at 15 mins was 0.53, 0.74, 79.06 mg·L-1, and 116.67 mg·L-1, respectively. The joint toxicity of cartap and heavy metals on Vibrio fischeri was mainly additive. When the spirotetramat accounted for a low proportion in the binary mixtures, the joint toxicity was partially additive. The presence of cartap and spirotetramat may slow down the rate of metal ions entering the cell. Therefore, the study of exposure time for joint toxicity on Vibrio fischeri should be extended to 45 mins. |
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