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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Human Health Effects Marine & Wildlife Sign in to save

Chronic poly(l-lactide) (PLA)- microplastic ingestion affects social behavior of juvenile European perch (Perca fluviatilis)

The Science of The Total Environment 2023 34 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Azora König Kardgar Azora König Kardgar Azora König Kardgar Azora König Kardgar Azora König Kardgar Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Azora König Kardgar Azora König Kardgar Azora König Kardgar Dipannita Ghosh, Joachim Sturve, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Joachim Sturve, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Azora König Kardgar Joachim Sturve, Joachim Sturve, Joachim Sturve, Joachim Sturve, Joachim Sturve, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Joachim Sturve, Joachim Sturve, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Seema Agarwal, Seema Agarwal, Seema Agarwal, Bethanie Carney Almroth, Bethanie Carney Almroth, Joachim Sturve, Bethanie Carney Almroth, Azora König Kardgar

Summary

Researchers fed juvenile perch a biodegradable plastic (PLA) for six months and found it significantly altered their social behavior, making them more reactive to other fish. While PLA did not affect growth or gene expression, it reduced locomotion and predator responses. The study suggests even biodegradable plastics can have behavioral toxicity in aquatic animals.

Polymers
PLA
Body Systems
Endocrine Hepatic Immune

Juvenile perch were exposed to 2 % (w/w) poly(l-lactide) (PLA) microplastic particles (90-150 μm) in food pellets, or 2 % (w/w) kaolin particles, and a non-particle control food over 6 months. Chronic ingestion of PLA microplastics significantly affected the social behavior of juvenile perch, evident as a significantly increased reaction to the vision of conspecifics. PLA ingestion did not alter life cycle parameters, or gene expression levels. In addition to reactions to conspecifics, fish that ingested microplastic particles showed tendencies to decrease locomotion, internal schooling distance, and active predator responses. The ingestion of natural particles (kaolin) significantly downregulated the expression of genes related to oxidative stress and androgenesis in the liver of juvenile perch, and we found tendencies to downregulated expression of genes related to xenobiotic response, inflammatory response, and thyroid disruption. The present study demonstrated the importance of natural particle inclusion and the potential behavioral toxicity of one of the commercially available biobased and biodegradable polymers.

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