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Primary and secondary microplastics do not affect hatching of Japanese flounder eggs
Summary
Researchers investigated the effects of primary polystyrene microbeads (3 and 10 micrometers) and secondary microplastics derived from coastal debris on the hatching rates of Japanese flounder eggs, finding that neither primary nor secondary microplastics affected hatching success, suggesting limited impact during this brief early developmental stage.
Abstract Microplastics (MPs) are pervasive pollutants that may threaten aquatic organisms, especially during early life stages. This study investigated effects of MPs on the hatching rate of Japanese flounder eggs. Fertilized eggs were exposed to polystyrene (PS) microbeads (primary microplastics) (3 and 10 µm, at 20 and 200 particles/m l ), and secondary MPs derived from coastal debris (rope, plastic bottles, fish net, string, and rubber pads) collected in Nagasaki, Japan. Hatching rates of flounder eggs were unaffected by either primary or secondary microplastics, suggesting limited impact of microplastics on this brief developmental stage.