Volta

Aligning Behavioral Ecotoxicology with Real-World Water Concentrations: Current Minimum Tested Levels for Pharmaceuticals Far Exceed Environmental Reality

Behavioral ecotoxicology has emerged as a key research area, offering sensitive and ecologically meaningful endpoints for detecting contaminant effects. Much of this work has focused on pharmaceutical pollutants, now widely recognized as contaminants of emerging concern. Given the field’s rapid growth and increasing data availability, we synthesized four global databases to evaluate the environmental relevance of tested concentrations─using behavioral ecotoxicology and pharmaceuticals as a case study. We compared data from over 760 behavioral studies with more than 10 million pharmaceutical occurrence data in surface water and wastewater. On average, minimum tested concentrations were 43 times higher than median surface water levels and 10 times greater than median concentrations in wastewater. Roughly half of all compounds were never evaluated at concentrations …

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