An assessment of microplastics in the ecosystem and selected commercially important fishes off Kochi, south eastern Arabian Sea, India

James, Kezia and Kripa, V and Padua, Shelton and Vineetha, G and Abhilash, K S and Jeyabaskaran, R and Babu, Akhil and John, Seban (2020) An assessment of microplastics in the ecosystem and selected commercially important fishes off Kochi, south eastern Arabian Sea, India. Marine Pollution Bulletin, 154. pp. 1-12.

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Abstract

A preliminary report on the abundance of microplastic in the coastal waters in the depth zone 5 to 20 m in the surface waters, sediment and in selected fishes occurring off Kochi, India is presented. Spatial and temporal variation in microplastic abundance was observed with higher abundance in surface water indicating threats to pelagic ecosystem. The relative concentration of microplastic was highest during monsoon season. The major microplastics were fragments of 1-5 mm in white and blue colours. Gut content analysis of 16 species (653 individuals) comprising pelagic (8 species) and demersal (8 species) indicated occurrence (4.6%) of microplastics (fragment>filament>pellet) of size 0.27mm to 3.2 mm in Sardinella longiceps, S. gibbosa, Stolephorus indicus Rastrelliger kanagurta and Cyanoglossus macrostomus. Raman spectroscopy indicated that Polyethylene (PE) and Polypropylene (PP) were the polymer types of microplastics from the fish gut.

Item Type:	Article
Uncontrolled Keywords:	Off Kochi; Microplastic; Concentration; Monsoon; Surface water; Fishes
Subjects:	Marine Environment > Marine Pollution Marine Environment Marine Ecosystems
Divisions:	CMFRI-Kochi > Fishery Environment Management Division Subject Area > CMFRI > CMFRI-Kochi > Fishery Environment Management Division CMFRI-Kochi > Fishery Environment Management Division Subject Area > CMFRI-Kochi > Fishery Environment Management Division
Depositing User:	Arun Surendran
Date Deposited:	20 May 2020 09:32
Last Modified:	20 May 2020 09:32
URI:	http://eprints.cmfri.org.in/id/eprint/14262

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