Assessment of microplastics pollution and its accumulation in selected aquaculture products

MOHD NAMRAN, SITI NORSUHAILA (2021) Assessment of microplastics pollution and its accumulation in selected aquaculture products. [Project Paper] (Submitted)

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Abstract

Introduction: Aquaculture species was reported to be contaminated with microplastics (MPs) by a large number of studies all around the world. The widespread occurrence of MPs in those harvested species intended for human consumption increases human health concerns. However, there is insufficient data regarding MPs occurrence in aquaculture products from Malaysia since this issue is rarely investigated. Objectives: This study determine the occurrence of MPs and evaluate their characteristics and composition in a group of commonly consumed aquaculture species from local freshwater and marine aquaculture hatcheries in Selangor, Malaysia. Methodology: A total of 28 samples consisting of six (6) species: Red Nile tilapia (Oreochromis niloticus) (TM: n = 5), African catfish (Clarias gariepinus) (K: n = 5), Mozambique tilapia (Oreochromis mossambicus) (TH: n = 5), Jade perch (Scrotum barcoo) (JP: n = 5), Hybrid grouper (Epinephelus fuscoguttatus X Epinephelus lanceolatus) (HG: n = 5), and Whiteleg shrimp (Litopenaeus vannamei) (P: n = 3) were collected from local freshwater and marine aquaculture hatcheries in Selangor, Malaysia, between March to April 2021. Fish (muscles, gills, liver, gastrointestinal tract) and shrimp (muscles, stomach, intestines, outer layer) were screened for the presence of MPs using NaCl hypersaline solution and hydrogen peroxide (H2O2). The extracted particles were examined through microscopic imaging and Fourier-transform infrared spectroscopy (FTIR) for their morphological characteristics’ identification (shape, color and polymer composition). Result and Discussion: Particles extracted from all the species screened ranged between 11 and 496 particles per individual. Their accumulation was highest in TM (496) > TH (300) > JP (29) > K (23) > HG (22) > P (11). Besides, the highest number of particles was detected in the gastrointestinal tract (GIT) of TM (334), followed by GIT of TH (264). The particles extracted from aquaculture species were mostly in fragment and irregular form, with a mixture of colored and colorless. Polypropylene (PP), nylon (NY), low-density polyethylene (LDPE) and polyvinyl chloride (PVC) were among the plastic polymers detected among the extracted particles from aquaculture species, suggesting that the particles possibly originated from aquaculture structures used at the sites. Conclusion: Microplastics detected in freshwater and marine aquaculture products from Selangor, Malaysia. Further investigation is needed to understand better how aquaculture structures utilized / aquaculture activities could influence MPs accumulation in sites and MPs in aquaculture species. Keywords: microplastics, aquaculture, freshwater, marine, species

Item Type:	Project Paper
Faculty:	Faculty of Medicine and Health Science
Depositing User:	Mr Hafizzuddin Hamidon
Date Deposited:	24 Aug 2023 04:48
Last Modified:	24 Aug 2023 04:48
URI:	http://psaspb.upm.edu.my/id/eprint/945

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