期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 644, 期 -, 页码 1452-1459出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2018.07.012
关键词
Alcohol ethoxylates; Alkylphenol ethoxylates; Indoxacarb; Acetamiprid; Synergistic effect; Joint toxicity
资金
- National Natural Science Foundation of China [31772203]
- National Key R&D Program of China [2017YFD0200307]
Seeking alternatives for alkylphenol ethoxylates (APEOs) have been a heavily researched topic in the surfactant industry and agricultural systems. In this study, the combined effects of different ethoxylates and pesticides on the bioactivity against three pests and toxicological risks to Daphnia magna were investigated. Results showed that alcohol ethoxylates (AEOs) had higher synergistic effects on the bioactivity of pesticides against Spodoptera exigua, Agrotis ipsilon and Aphis citricola than did APEOs. In terms of the joint toxicity of the ethoxylates and pesticides to D. magna, additive index method, toxicity unit method, V value method and isobologram method were used in the tests. All of these methods indicated that the joint effects of APEOs + acetamiprid and APEOs + indoxacarb upon D. magna turned from synergism to antagonism with the increasing EO (ethylene oxide) numbers. Those of AEOs exhibited similar trends. Overall, AEOs may be potential alternatives for APEOs in agriculture as they synergize pesticides against three pests significantly more than do APEOs. However, further research should investigate the compounds' environmental risks to aquatic organisms because the AEOs were highly toxic to D. magna. (C) 2018 Elsevier B.V. All rights reserved.
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