Microplastics in Grouper Fish (Genera Epinephelus) Gastrointestinal Tract from Pramuka Island, Seribu Islands, Indonesia

Marine fishery products have been contaminated with microplastic (MPs), including molluscs, crustacean, and fish. The study aimed to analyze the number and types of MPs in the digestive tract and sediment, correlation between number of MPs with total body length, and estimated uptake of MPs in the fish from sediment using Bioaccumulation Factor (BAF). The method of determining sampling point involved purposive sampling and direct observation at Pramuka Island, Seribu Islands, Indonesia. Groupers fish were found in 20 individuals with 4 species of Epinephelus areolatus, E. ongus, E. sexfasciatus, and E. fuscoguttatus. The number of MPs found in the gastrointestinal tract of Epinephelus is 1648 particles with 3 types: fiber, fragment, and pellet. The highest number of MPs in the sediment was at dock and the lowest was at Gosong Pramuka Island. The numbers of MPs in the digestion tract does not affect the body length of individual species. The BAF value indicates result that the MPs uptake in sediments to gastrointestinal tract of Epinephelus grouper is low. All samples of the Epinephelus grouper were contaminated with MPs.