Team > M.Sc. Sven Ritschar

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

PhD candidate

PhD project: Characterization of molecular and histological effects of MP particles in tissue (sections) of aquatic and terrestrial model organisms

The question if MP particles cause effects by purely passing through the intestinal tract or only after translocation into the tissue is not fully understood yet. It is also not clear which properties of MP particles are responsible for these effects. Therefore, this project aims at directly correlating local molecular and histological effects in tissue to individual particles. This will be achieved by a combination of spatially resolved analysis methods (FTIR, Raman and mass spectrometry) and classical histology. The experiments will be based on MP particles of different composition and morphology (spherical particles, fragments, fibers) and aquatic and terrestrial model organisms. The analysis of the same tissue section by highly complementary methods will enable us to relate molecular and histological effects in tissue directly to a single (identified) MP particle and will thus provide new insight into processes causing MP-related effects.

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

Master in Biodiversity and Ecology
PhD Candidate Animal Ecology | Supervisor Prof. Dr. Christian Laforsch

PhD Project: SFB1357 Mikroplastik, Teilprojekt A03 | Characterization of molecular and histological effects of MP particles in tissue (sections) of aquatic and terrestrial model organisms

Research Interests: Animal Ecology, Invertebrate Zoology, Histology, tissue pathology

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

Publications

2024

Frederic Hüftlein, Sven Ritschar, Christian Laforsch: Sexual dimorphism in the proventriculus of the buff‐tailed bumblebee Bombus terrestris (L. 1758) (Hymenoptera: Apidae). In: Journal of Morphology, 285 (2024). - .
doi:10.1002/jmor.21668

2023

Julian Brehm, Sven Ritschar, Christian Laforsch, Magdalena Mair: The complexity of micro- and nanoplastic research in the genus Daphnia : A systematic review of study variability and a meta-analysis of immobilization rates. In: Journal of Hazardous Materials, 458 (2023). - .
doi:10.1016/j.jhazmat.2023.131839

Jasmin Kniese, Sven Ritschar, Lina Bünger, Heike Feldhaar, Christian Laforsch, Andreas Römpp, Heinar Schmidt: Localisation and identification of polystyrene particles in tissue sections using Raman spectroscopic imaging. In: NanoImpact, 30 (2023). - .
doi:10.1016/j.impact.2023.100465

Christian Laforsch, Anja Ramsperger, Sven Ritschar: Mikroplastik und der mögliche Einfluss auf die menschliche Gesundheit. In: Viviane Scherenberg, Johanne Pundt (Hrsg.): Klima-und Gesundheitsschutz : Planetary-Health-Lösungsansätze. - Bremen : Apollon University Press, 2023. - S. 131-158.

2022

Sven Ritschar, Elisabeth Schirmer, Benedikt Hufnagl, Martin G. J. Löder, Andreas Römpp, Christian Laforsch: Classification of target tissues of Eisenia fetida using sequential multimodal chemical analysis and machine learning. In: Histochemistry and Cell Biology, 157 (2022). - S. 127-137.
doi:10.1007/s00418-021-02037-1

Julian Brehm, Magdalena V. Wilde, Lukas Reiche, Lisa-Cathrin Leitner, Benedict Petran, Marcel Meinhart, Simon Wieland, Sven Ritschar, Matthias Schott, Jan-Pascal Boos, Sven Frei, Holger Kress, Jürgen Senker, Andreas Greiner, Thomas Fröhlich, Christian Laforsch: In-depth characterization revealed polymer type and chemical content specific effects of microplastic on Dreissena bugensis. In: Journal of Hazardous Materials, 437 (2022). - .
doi:10.1016/j.jhazmat.2022.129351

Elisabeth Schirmer, Sven Ritschar, Matthias Ochs, Christian Laforsch, Stefan Schuster, Andreas Römpp: MALDI mass spectrometry imaging workflow for the aquatic model organisms Danio rerio and Daphnia magna. In: Scientific Reports, 12 (2022). - .
doi:10.1038/s41598-022-09659-y

Sven Ritschar, Frederic Hüftlein, Lisa-Marie Schell, Julian Brehm, Christian Laforsch: Taking advantage of transparency : A proof-of-principle for the analysis of the uptake of labeled microplastic particles by organisms of different functional feeding guilds using an adapted CUBIC protocol. In: Science of the Total Environment, 832 (2022). - .
doi:10.1016/j.scitotenv.2022.154922

2020

Sven Ritschar, Max Rabus, Christian Laforsch: Predator-specific inducible morphological defenses of a water flea against two freshwater predators. In: Journal of Morphology, 281 (2020). - S. 653-661.
doi:10.1002/jmor.21131

Sven Ritschar, Vinay Kumar Bangalore Narayana, Max Rabus, Christian Laforsch: Uncovering the chemistry behind inducible morphological defences in the crustacean Daphnia magna via micro-Raman spectroscopy. In: Scientific Reports, 10 (2020). - .
doi:10.1038/s41598-020-79755-4

Faculty of Biology, Chemistry and Earth Sciences
Chair Animal Ecology I

M.Sc. Sven Ritschar
PhD candidate

Chair Animal Ecology I
Building NWI, Room 5.0 01 37
University of Bayreuth
Universitätsstr. 30
95440 Bayreuth
Germany

Phone: +49 (0) 921 55 2565
Fax: +49 (0) 921 55 2784

E-mail: Sven1.ritschar@uni-bayreuth.de