Ecotoxicological Studies Indicate That Sublethal and Lethal Processes Limit Insect-Mediated Contaminant Flux.

Autor: Olson CI; Department of Civil and Environmental Engineering, Syracuse University, Syracuse, New York, USA., Beaubien GB; Center for Environmental Solutions and Emergency Response, US Environmental Protection Agency, Cincinnati, Ohio., Otter RR; Data Science Institute, Middle Tennessee State University, Murfreesboro, Tennessee, USA.; Department of Biology, Middle Tennessee State University, Murfreesboro, Tennessee, USA., Walters DM; Columbia Environmental Research Center, US Geological Survey, Columbia, Missouri., Mills MA; Center for Environmental Solutions and Emergency Response, US Environmental Protection Agency, Cincinnati, Ohio.
Jazyk: angličtina
Zdroj: Environmental toxicology and chemistry [Environ Toxicol Chem] 2023 Sep; Vol. 42 (9), pp. 1982-1992. Date of Electronic Publication: 2023 Apr 17.
DOI: 10.1002/etc.5574
Abstrakt: Merolimnic insects can accumulate and transport considerable amounts of aquatic contaminants to terrestrial systems. The rate of contaminant biotransport, termed insect-mediated contaminant flux (IMCF), depends on emergent insect biomass and contaminant accumulation, both functions of environmental concentration. We developed a mathematical model of IMCF and apply it to three ecotoxicological studies obtained through the US Environmental Protection Agency's ECOTOX database to determine at which concentration maximum IMCF occurs. Model results demonstrate that the maximum IMCF depends on competing rates of biomass loss and contaminant accumulation and does not necessarily occur at the highest insect or environmental contaminant concentration. In addition, modeling results suggest that sublethal contaminant effects (e.g., decreased growth) on insect biomass can be an important and potentially underappreciated control on IMCF. Environ Toxicol Chem 2023;42:1982-1992. © 2023 SETAC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
(© 2023 SETAC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.)
Databáze: MEDLINE
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