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CRITICAL KNOWLEDGE GAPS AND RELEVANT VARIABLES REQUIRING CONSIDERATION WHEN PERFORMING AQUATIC ECOTOXICITY ASSAYS
Carga contaminante
Avaliação de risco ambiental
Propriedades contaminantes
Toxicologia aquática
Modo de dose
Environmental risk assessment
Dose mode
Contaminant load
Contaminant properties
Multiple contaminant exposure
Affilliation
Universidade do Estado do Rio de Janeiro. Departamento de Engenharia Sanitária e Ambiental. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção da Saúde Ambiental. Rio de Janeiro, RJ, Brasil.
Universidade do Estado do Rio de Janeiro. Departamento de Engenharia Sanitária e Ambiental. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção da Saúde Ambiental. Rio de Janeiro, RJ, Brasil.
Universidade do Estado do Rio de Janeiro. Departamento de Engenharia Sanitária e Ambiental. Rio de Janeiro, RJ, Brasil.
Abstract
The increasing diversity and complexity of contaminants released in the environment continuously lead to new
challenges when applying ecotoxicity assays. This paper comprises a review concerning exposure assessment and
highlights important variables that should be taken into account when investigating aquatic media toxicity under
both laboratory or field conditions. Thus, to reflect as much as possible what occurs in nature, ecotoxicity assays
must carefully consider these variables in their experimental design. This includes contaminant properties, the
selected bioindicators and biomarkers, the dose mode/regime, concentration vs. load, exposure to single vs.
multiple contaminants and exposure of single vs. multiple species. Many of these, however, are not usually taken
into account, leading to critical knowledge gaps in this area, discussed in detail herein.
Keywords in Portuguese
Exposição múltipla de contaminantesCarga contaminante
Avaliação de risco ambiental
Propriedades contaminantes
Toxicologia aquática
Modo de dose
Keywords
Aquatic toxicologyEnvironmental risk assessment
Dose mode
Contaminant load
Contaminant properties
Multiple contaminant exposure
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