Enchytraeus crypticus avoid soil spiked with microplastic

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http://hdl.handle.net/10138/314722

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Pflugmacher , S , Huttunen , J , van Wollf , M-A , Penttinen , O-P , Kim , Y , Kim , S , Mitrovic , S & Esterhuizen , M 2020 , ' Enchytraeus crypticus avoid soil spiked with microplastic ' , Toxics , vol. 8 , no. 1 , 10 , pp. 1-10 . https://doi.org/10.3390/toxics8010010

Title: Enchytraeus crypticus avoid soil spiked with microplastic
Author: Pflugmacher, Stephan; Huttunen, Johanna; van Wollf, Marya-Anne; Penttinen, Olli-Pekka; Kim, Yongjun; Kim, Sanghun; Mitrovic, Simon; Esterhuizen, Maranda
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Teachers' Academy
University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS)
Date: 2020-03
Language: eng
Number of pages: 10
Belongs to series: Toxics
ISSN: 2305-6304
URI: http://hdl.handle.net/10138/314722
Abstract: Microplastics (MPs) of varying sizes are widespread pollutants in our environment. The general opinion is that the smaller the size, the more dangerous the MPs are due to enhanced uptake possibilities. It would be of considerable ecological significance to understand the response of biota to microplastic contamination both physically and physiologically. Here, we report on an area choice experiment (avoidance test) using Enchytraeus crypticus, in which we mixed different amounts of high-density polyethylene microplastic particles into the soil. In all experimental scenarios, more Enchytraeids moved to the unspiked sections or chose a lower MP-concentration. Worms in contact with MP exhibited an enhanced oxidative stress status, measured as the induced activity of the antioxidative enzymes catalase and glutathione S-transferase. As plastic polymers per se are nontoxic, the exposure time employed was too short for chemicals to leach from the microplastic, and as the microplastic particles used in these experiments were too large (4 mm) to be consumed by the Enchytraeids, the likely cause for the avoidance and oxidative stress could be linked to altered soil properties.
Subject: 1172 Environmental sciences
microplastic
Enchytraeus crypticus
enchytraeids
avoidance test
toxicity
oxidative stress
catalase
glutathione S-transferase
OXIDATIVE STRESS
PLASTIC ADDITIVES
GAMMA-HCH
ALBIDUS
ORGANISMS
MIGRATION
TOXICITY
EXPOSURE
WATER
TIME
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