Please use this identifier to cite or link to this item: https://rda.sliit.lk/handle/123456789/4051
Title: A Comprehensive Investigation of Microplastic Contamination and Polymer Toxicity in Farmed Shrimps; L. vannamei and P. monodon
Authors: Jayaweera, Y.U
Hennayaka, H.M.A.I
Herath, H.M.L.P.B
Gajanayake Mudalige, P.K
Mahagamage, M.G.Y.L
Rodrigo, U.D
Manatunga, D.C
Keywords: Microplastics
Farmed shrimps
Polystyrene
Polymer toxicity
Zebrafsh embryo model
Issue Date: 20-Feb-2025
Publisher: Springer Nature
Citation: Jayaweera, Y.U., Hennayaka, H.M.A.I., Herath, H.M.L.P.B. et al. A Comprehensive Investigation of Microplastic Contamination and Polymer Toxicity in Farmed Shrimps; L. vannamei and P. monodon. Water Air Soil Pollut 236, 168 (2025). https://doi.org/10.1007/s11270-025-07800-x
Series/Report no.: Water Air Soil Pollut (2025);236:168
Abstract: Microplastic (MP) pollution poses a significant threat to marine ecosystems, seafood safety, and human health. This study investigates the accumulation of microplastics in two commercially important shrimp species, Litopenaeus vannamei (L. vannamei) and Penaeus monodon (P. monodon), sourced from cluster farming sites in Puttalam, Sri Lanka. Shrimp exoskeletons and edible soft tissues underwent rigorous microplastic analysis, including density separation, alkali digestion, stereo microscopy, and Raman spectroscopy. The results revealed high microplastic contamination, with L. vannamei containing an average of 4.99 ± 1.81 MP particles/g and P. monodon containing 1.87 ± 0.55 MP particles/g. Microplastic sizes varied, with L. vannamei predominantly contaminated with 100–250 µm particles and P. monodon with 500 µm—1000 µm particles. Fiber morphotypes were prevalent in L. vannamei, while blue-colored microplastics were dominant in P. monodon. These comprised polystyrene (PS), nylon 6,6, and polyethylene (PE) which were identified by Raman spectroscopy. Additionally, the study investigated the acute toxicity effects of microplastic polymer combinations using a zebrafish embryo model (FET236 assay). Zebrafish embryos exposed to polyethylene-nylon 6,6 combinations exhibited significant adverse effects on hatching, survival, and heart function at lower concentrations, while polyethylene terephthalate-polystyrene combinations showed no considerable effects. These findings underscore the urgent need for monitoring and managing microplastic contamination in shrimp farming areas. Future research should focus on elucidating the ecological impacts and human health risks associated with microplastic exposure.
URI: https://rda.sliit.lk/handle/123456789/4051
ISSN: 0049-6979
Appears in Collections:School of Natural Sciences

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