TY  - JOUR
AB  - Steadily increasing inputs of microplastics pose a growing threat to aquatic fauna, but laboratory studies potentially lack realism to properly investigate its effects on populations and ecosystems. Our study investigates the trophic and ontogenetic transfer of microplastics in a near-natural exposure scenario. The controlled outdoor freshwater mesocosms were exposed to polyamide (PA) 5–50 µm in size in concentrations of 15 and 150 mg L−1 and a control without microplastic addition. To verify the uptake of particles via the food chain, larvae and imagines of the midges Chaoborus crystallinus and C. obscuripes were examined, which feed on zooplankton during their larval stage. Larvae were captured after 117 days and imagines were caught in emergence traps that were emptied weekly. To detect the microparticles within the organisms, 200 larvae and 100 imagines per application were macerated and treated with fluorescent dye before investigation under a fluorescent microscope. We could detect up to 12 PA particles per individual larvae, while nearly no plastic was found in the imagines. This shows that, while Chaoborus sp. takes up microplastics via predation, most of the pollutant is egested through regurgitation and remains in the water, where it can further accumulate and potentially harm other organisms.
AU  - Michler-Kozma, Diana Noemi
AU  - Kruckenfellner, Lukas
AU  - Heitkamp, Anna
AU  - Ebke, Klaus-Peter
AU  - Gabel, Friederike
DA  - 2022-03-11
DO  - 10.17879/63089410935
KW  - Chaoborus
KW  - zooplankton
KW  - ontogenetic transfer
KW  - trophic transfer
KW  - macroinvertebrates
LA  - eng
N1  - Water 14 (2022) 6, 887, 1-10
N1  - Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
N1  - Förderer: Federal Ministry of Education and Research / Projektnummer: 02WPL1448
N1  - Funding organisation: Federal Ministry of Education and Research / Project number: 02WPL1448
PY  - 2022-03-11
TI  - Uptake and Transfer of Polyamide Microplastics in a Freshwater Mesocosm Study
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:6-63089409321
Y2  - 2024-11-22T07:37:33
ER  -