From Water to Web: Trophic Transfer of Neonicotinoids from a Wastewater Effluent-Dominated Stream to Riparian Spiders.

ABSTRACT: Municipal wastewater is a known point source of organic contaminants, including pharmaceuticals and neonicotinoid insecticides. Emergent aquatic insects can provide a direct aquatic-to-terrestrial contaminant transfer route to the food web, with implications for terrestrial food web dispersal of wastewater-derived organic contaminants. We quantified 17 target pharmaceuticals and insecticides (log K _ow: -1.43 to 4.75) in surface water, fish, aquatic insects, and web-building riparian spiders at a wastewater effluent-dominated stream in eastern Iowa, USA. Two neonicotinoids, imidacloprid and clothianidin, had spider tissue concentrations of 8.9-84 ng/g and 1.2-11 ng/g, respectively. The imidacloprid/clothianidin ratios in spider tissues were reflective of the concentration

SUBMITTER: Mianecki AL 

PROVIDER: S-EPMC12447229 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature