Volta

The impact of microplastic on nematodes: Soil type, plastic amount and aging as determinants for the fitness of Caenorhabditis elegans

The presence of microplastics (MPs) in the environment is increasing, however, there is still limited knowledge on the potential threat to biodiversity and function of terrestrial ecosystems. Although soil is a primary sink for MPs, the effects on the soil fauna have not been extensively investigated. This applies in particular to ecotoxicological tests using soil as a medium to mirror a natural environment. In this study, we investigated the impact of conventional plastic, low-density polyethylene (LDPE), and biodegradable plastic, a blend of poly(lactic acid) and poly(butylene adipate- co -terephthalate) (PLA/PBAT), with particle sizes of <180 μm and 180–500 μm. As a representative of the species-rich and abundant group of soil nematodes, the model nematode Caenorhabditis elegans was cultivated in three …

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