Early Life Toxicity of Polyethylene Microplastics, Evidence of Growth Suppression and Intestinal-Muscle Damage in Asian Seabass ( Lates calcarifer) Fingerlings

Acute Effects of Size Dependent Low-Density Polyethylene Microplastics on Zebrafish

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Zebrafish embryos exposed to low-density polyethylene microplastics for 48 hours accumulated particles in their gut, experienced reduced hatching rates, increased heart rates, and significant tissue damage, with smaller particles causing the most harm. These acute effects in a widely used model organism suggest that even brief early-life exposure to plastic particles can disrupt normal development.

Polyethylene Microplastics Induce Concentration- and Time-Dependent Hematophysiological Impairment and Oxidative Stress Following Tissue Accumulation in Rock Bream (Oplegnathus Fasciatus)

Ecotoxicity Assessment of Microplastics on Aquatic Life

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Researchers assessed the ecotoxicological effects of microplastics on aquatic life across marine and freshwater systems, finding that organisms at multiple trophic levels ingest plastic particles, leading to physical harm, chemical toxicity, and secondary effects that propagate through food webs.

Aging enhances the ecological toxicity of polyethylene microplastics to marine medaka larvae (Oryzias melastigma)

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Researchers found that UV- and Fenton-aged polyethylene microplastics caused greater harm to marine medaka larvae than virgin plastic, disrupting gut microbiota composition and altering microbial metabolic functions in ways that impaired growth and development, underscoring the need to assess weathered microplastics in ecological risk evaluations.

Microplastics in Juvenile Commercial Fish from an Estuarine Environment

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Juvenile commercial fish from an estuarine environment were found to have ingested microplastics, demonstrating that plastic contamination affects fish at early life stages in transitional coastal ecosystems rather than only in open ocean habitats. Since estuaries serve as nurseries for many commercially important species, microplastic ingestion by juveniles threatens both fish population health and the safety of seafood reaching consumers.