Nanoparticles transported from aquatic to terrestrial ecosystems via emerging aquatic insects compromise subsidy quality.

ABSTRACT: Nanoparticle contaminants enter aquatic ecosystems and are transported along the stream network. Here, we demonstrate a novel pathway for the return of nanoparticles from aquatic to terrestrial ecosystems via cross-boundary subsidies. During their emergence, trichopteran caddisflies carried titanium dioxide and gold nanoparticles into their terrestrial life stages. Moreover, their emergence was delayed by ≤30 days, and their energy reserves were depleted by ≤25%. Based on worst case estimates, it is suggested that terrestrial predators, such as bats feeding on aquatic prey, may ingest up to three orders of magnitude higher gold levels than anticipated for humans. Additionally, terrestrial predator species may suffer from alterations in the temporal availability and nutritional quality of t

SUBMITTER: Bundschuh M 

PROVIDER: S-EPMC6821837 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature