Abstract
Microplastics (MPs) pose a significant global health and environmental threat. Limited research has examined the impact of Tire Wear Particles (TWPs), a type of microplastics, on freshwater ecosystems. Dugesia tigrina, a common freshwater planaria species known for its remarkable regenerative abilities driven by neoblast stem cells, serves as the subject of this study which investigates the effects of TWP concentration and accumulation on the regeneration rate of planaria using a Head:Body color ratio. When exposed to TWPs over 2 weeks in different concentrations, Dugesia tigrina demonstrates an accelerated regeneration in higher concentration. Surprisingly, Dugesia tigrina that are exposed to TWPs for a longer period of 6 weeks shows signs of tolerance to TWP.
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