< em > Egeria densa < /em > remediates the aquatic environment and reduces < sup > 14 < /sup > C-deltamethrin bioaccumulation in < em > Danio rerio < /em >

J Environ Sci Health B. 2023 Jul 10:1-6. doi: 10.1080/03601234.2023.2232277. Online ahead of print.ABSTRACTDeltamethrin is an insecticide with high toxicity to non-target aquatic organisms. Environment-friendly alternatives to removing insecticides from water bodies, like phytoremediation, require species to uptake and/or dissipate pesticides from water. Our research investigated the ability of Egeria densa plants to absorb and dissipate 14C-deltamethrin from water, and bioaccumulation in Danio rerio. The variables were four densities of E. densa (0, 234, 337, and 468 g dry weight m-3), in tanks with seven adults of D. rerio, with three replicates. Dissipation was evaluated at 0, 24, 48, 72, and 96 h after application (HAA). After 96 HAA, the uptake of 14C-deltamethrin by plants and accumulation in fish were assessed. The E. densa increased 14C-deltamethrin dissipation and reduced bioaccumulation in zebrafish. The DT50 decreased 3-fold in treatments with 337 and 468 g m-3 of E. densa. The plants absorbed 32% of the 14C-deltamethrin applied, regardless of plant density. The bioaccumulation in fish was 8.21% without E. densa and only 1% in treatments with 468 g m-3 of plants. These results suggest phytoremediation using E. densa is a possible alternative to removing deltamethrin from water and reducing the accumulation in non-target organisms, reducing the environmental impact of insecticides in aquatic ecosystems.PMID:37430469 | DOI:10.1080/03601234.2023.2232277
Source: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes - Category: Environmental Health Authors: Source Type: research