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The Red Tide Organism Chaetoceros sp. Responding to Exposure to Oil and Dispersant

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  • Xin Lv

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Xin Liu

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    Centre for Ocean Mega-Research of Sciences, Chinese Academy of Sciences, Qingdao 266071, China)

  • Xiaoke Hu

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China)

  • Ruiying Geng

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Cheng Tang

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China)

  • Qianguo Xing

    (Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China)

Abstract

Laboratory experiments were conducted to study the effects of oil spills and dispersants on the growth of the red tide organism Chaetoceros sp. Crude oil produced from the Chinese Bohai Sea, diesel oil, and the chemical dispersant (GM-2) produced in China were added into Chaetoceros sp. cultures. The results showed that both crude oil and diesel oil could enhance the growth of Chaetoceros sp. Data were analyzed by one-way ANOVA, and the confidence interval was 95%. At a concentration of 20 mg L −1 crude oil and a concentration of 10 μL L −1 diesel oil, Chaetoceros sp. bloomed to 1.57 × 10 5 cells mL −1 ( p < 0.01) at day 14 and 3.55 × 10 4 cells mL −1 ( p < 0.05) at day 10, respectively. A concentration of 10 μL L −1 diesel oil stimulated the specific growth rate for Chaetoceros sp. of 0.49 d −1 over 10 days. The specific growth rate of Chaetoceros sp. with 20 mg L −1 crude oil alone was 0.46 d −1 over 14 days. However, the mixture of oil and dispersant did not enhance the growth of Chaetoceros sp. as significantly as oil alone. These results implied that oil spills in coastal waters can stimulate Chaetoceros sp., and the specific dispersant GM-2 applied following oil spills may be unlikely to further enhance the growth of Chaetoceros sp.

Suggested Citation

  • Xin Lv & Xin Liu & Xiaoke Hu & Ruiying Geng & Cheng Tang & Qianguo Xing, 2023. "The Red Tide Organism Chaetoceros sp. Responding to Exposure to Oil and Dispersant," Sustainability, MDPI, vol. 15(2), pages 1-14, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1103-:d:1027618
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    References listed on IDEAS

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    1. Kai Li & Hongliang Yu & Yiqun Xu & Xiaoqing Luo, 2022. "Scheduling Optimization of Offshore Oil Spill Cleaning Materials Considering Multiple Accident Sites and Multiple Oil Types," Sustainability, MDPI, vol. 14(16), pages 1-19, August.
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