2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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6/06/2017 | 11:45 AM - 12:00 PM | Are aquatic macroinvertebrate communities vulnerable to engineered nanomaterials? A community composition and bioaccumulation study in outdoor wetland mesocoms | 305B

Are aquatic macroinvertebrate communities vulnerable to engineered nanomaterials? A community composition and bioaccumulation study in outdoor wetland mesocoms

Wetlands are frequently exposed to emerging contaminants through wastewater and other anthropogenic sources. Wetlands also are habitat for numerous aquatic insect species as well as birds and other wildlife that consume them when they emerge. We examined the effects of engineered copper (Cu) and gold (Au) nanomaterials on aquatic insect community composition and emergence in wetland mesocosms over nine months. Emerging insects were collected monthly for 7 days. Concentration of nanomaterials in aquatic insects was determined using ICP-MS. Cu and Au treatments suppressed the number of insects emerging from the mesocosms compared to the control treatments. The dominant major groups of all emerging taxa were Diptera (83%), Odonata (10%) and Lepidoptera (3%). These results imply that environmentally realistic concentrations of Cu and Au nanomaterials influence wetland insect emergence. This study highlights the effects of emerging contaminants on naturally colonized insect communities within a controlled experiment.

C13 Ecotoxicology
C03 Invertebrates
S03 Stressing the 'Eco' in Freshwater Ecotoxicology

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Presenters/Authors

Brittany Perrotta (), Baylor University, bperrotta16@gmail.com;