Characterization of Microplastics in Chelidonichthys spinosus Inhabiting Haizhou Bay and Their Risk Assessment
As the marine pollution worsen continuously,there are growing concerns on the hazards of microplastics.These tiny plastic particles drift with ocean currents and accumulate in and transfer through the food chain of ecosystems.In order to characterize the microplastics in the marine environment of Haizhou Bay and evaluate their risk,in this study,we analyzed the microplastic pollution in the body of Spiny red gurnard(Chelidonichthys spinosus)inhabiting Haizhou Bay.The results revealed that the microplastics presented widely in the gills and gastrointestinal tracts of C.spinosus with an average abundance of(1.98±2.02)items per individual.The majority of microplastics were smaller than 500 μm,predominantly black and predominantly fibrous in shape.Eight types of polymers were identified with polyethylene terephthalate(PET)and polymethyl methacrylate(PMMA)as the most prominent.Correlation analysis indicated that the correlation between microplastic abundance in the gastrointestinal tract and the total length of the small-spotted catfish is negatively significant(P＜0.05).However,no significant correlation was found among microplastic abundance in gills,total microplastic abundance,total length,weight,gastrointestinal weight of the small-spotted catfish.The assessment of risk using the Polymer Hazard Index(PHI)revealed that the overall polymer hazard level in C.spinosus of Haizhou Bay is medium-low.
万方数据
维普
