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Effects of microplastics and nanoplastics in shrimp: Mechanisms of plastic particle and contaminant distribution and subsequent effects after uptake
Summary
This review summarizes how microplastics and nanoplastics affect shrimp, which are an important food source for humans. The tiny plastic particles can carry harmful chemicals and pathogens into shrimp tissue, which then move up the food chain when people eat contaminated seafood. The findings highlight concerns about plastic pollution in aquaculture and its indirect effects on human health through the food we eat.
To date, previous studies have reported the adverse effects of microplastics (MPs) and nanoplastics (NPs) on both freshwater and marine organisms. However, the information on MPs' and NPs' effects on shrimp species is scarce. In addition, the factors influencing the distribution of these particles in aquatic systems have been explained, yet the mechanisms behind MPs and NPs distribution and consumption, specifically to crustaceans and shrimp, have not been elucidated in detail. The effects of MPs and NPs as well as plastic-carried contaminants and pathogens on shrimp are critical to shrimp production and subsequent human consumption. Recent findings are required to review and discuss to open up new avenues for emerging Shrimp and crustacean research for sustainability. This review summarizes the distribution and fate of MPs and NPs along with contaminants and pathogens and identifies potential risks to shrimp health. The transport of MPs and NPs is influenced by their plastic properties, hydrodynamics, and water properties. Additionally, the fate of these particles on a plastic surface (plastisphere) is regulated by contaminant properties. Pathogens thriving on plastic surfaces and contaminants adsorbed can reach aquatic organisms directly with plastic particles or indirectly after release to an aquatic environment. MPs and NPs can be absorbed by shrimp through their gills and mouth and accumulate in their internal organs. Innate immunity influenced the degree of survival rate, tissue damage, alteration of gut microbiota, and increased oxidative stress caused by MPs and NPs accumulation. The studies on the effects of MPs and NPs are still not sufficient to understand how these particles are absorbed from various parts of the shrimp body and the fate of these plastics inside the body.
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