Are standard aquatic test species and methods adequate surrogates for use in environmental risk assessment of pesticides in tropical environments?

In regulatory risk assessment, surrogate species of fish, aquatic invertebrates and primary producers are tested to assess toxicity and subsequently the risk of pesticides to freshwater environments. This study evaluates whether the standard, surrogate test species, used in many parts of the world, are suitable surrogates for use in risk assessments for tropical freshwater environments. Data for the toxicity of pesticides to tropical fish, invertebrate and primary producer species were extracted from the supplemental material by Wang et al. (2019), the USEPA ECOTOX database and peer reviewed literature.在监管风险评估中，科研人员通常以鱼类、水生无脊椎动物和初级生产者作为替代物种（surrogate species）开展毒性测试，进而评估杀虫剂对淡水生态环境的危害风险。本研究旨在评估当前全球多数地区所采用的标准替代测试物种，是否适用于热带淡水环境的风险评估工作。本研究从Wang等人（2019年）的补充材料、美国环境保护署（USEPA）ECOTOX数据库以及同行评议文献中，提取了杀虫剂针对热带鱼类、无脊椎动物及初级生产者物种的毒性数据。