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Interaction of microplastics and terrestrial and aquatic insects (bioaccumulation, degradation, ecotoxicological effects)
Summary
This review synthesizes research on how insects — both aquatic and terrestrial — interact with microplastics, covering ingestion, bioaccumulation, potential degradation, and toxic effects across many species. Insects represent a critical but understudied link in microplastic transfer through food webs: they occupy a pivotal trophic position, and contamination in insects can propagate to birds, fish, and other wildlife that depend on them. The review highlights significant knowledge gaps in terrestrial insect ecotoxicology compared to the better-studied aquatic realm.
World production of convenient and durable materials made of synthetic plastics during the last 70 years caused the dispersal of microplastic particles in the environment. Microplastic pollution is the focus of interest worldwide due to its global distribution and adverse effects on living organisms. The largest number of studies addressing this issue explored the aquatic environment, yet terrestrial ecosystems also suffer from microplastic pollution. Insects are crucial for most terrestrial ecosystems. Few can compete with them in biomass productivity and species diversity, which makes them targets for studying the toxic bioaccumulation. This review article presents a systematic analysis of data on bioaccumulation, degradation of microplastics by aquatic and terrestrial entomofauna, and its ecotoxicological effects.
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