Literature by the same author
plus at Google Scholar

Bibliografische Daten exportieren
 

Microplastic ingestion affects hydrogen production and microbiomes in the gut of the terrestrial isopod Porcellio scaber

Title data

Hink, Linda ; Holzinger, Anja ; Sandfeld, Tobias ; Weig, Alfons ; Schramm, Andreas ; Feldhaar, Heike ; Horn, Marcus A.:
Microplastic ingestion affects hydrogen production and microbiomes in the gut of the terrestrial isopod Porcellio scaber.
In: Environmental Microbiology. Vol. 25 (11 April 2023) Issue 12 . - pp. 2776-2791.
ISSN 1462-2920
DOI: https://doi.org/10.1111/1462-2920.16386

Official URL: Volltext

Project information

Project title:
Project's official title
Project's id
SFB 1357 Mikroplastik
391977956

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Microplastic (MP) is an environmental burden and enters food webs via ingestion by macrofauna, including isopods (Porcellio scaber) in terrestrial ecosystems. Isopods represent ubiquitously abundant, ecologically important detritivores. However, MP-polymer specific effects on the host and its gut microbiota are unknown. We tested the hypothesis that biodegradable (polylactic acid [PLA]) and non-biodegradable (polyethylene terephthalate [PET]; polystyrene [PS]) MPs have contrasting effects on P. scaber mediated by changes of the gut microbiota. The isopod fitness after an 8-week MP-exposure was generally unaffected, although the isopods showed avoidance behaviour to PS-food. MP-polymer specific effects on gut microbes were detected, including a stimulation of microbial activity by PLA compared with MP-free controls. PLA stimulated hydrogen emission from isopod guts, while PET and PS were inhibitory. We roughly estimated 107 kg year−1 hydrogen emitted from the isopods globally and identified their guts as anoxic, significant mobile sources of reductant for soil microbes despite the absence of classical obligate anaerobes, likely due to Enterobacteriaceae-related fermentation activities that were stimulated by lactate generated during PLA-degradation. The findings suggest negative effects of PET and PS on gut fermentation, modulation of important isopod hydrogen emissions by MP pollution and the potential of MP to affect terrestrial food webs.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professor Animal Population Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professor Animal Population Ecology > Professor Animal Population Ecology - Univ.-Prof. Dr. Heike Feldhaar
Profile Fields > Advanced Fields > Ecology and the Environmental Sciences
Research Institutions > Collaborative Research Centers, Research Unit > SFB 1357 - MIKROPLASTIK
Faculties
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 540 Chemistry
500 Science > 550 Earth sciences, geology
500 Science > 570 Life sciences, biology
Date Deposited: 18 Apr 2023 06:34
Last Modified: 12 Jan 2024 11:28
URI: https://eref.uni-bayreuth.de/id/eprint/75967