Oral Presentation SETAC Asia-Pacific Virtual Conference 2022

Comparison of 50-500 μm Microfiber in Indonesia’s Anchovies Caught Between Two Fishing Zones (#42)

Endar Widiah Ningrum 1 , Mufti Petala Patria 1
  1. Universitas Indonesia, Depok, INDONESIA, Indonesia

Indonesia has a wide range fishing zone from the Eastern Indian Ocean to the Western Central Pacific Ocean. The anchovy is one of its commodities which is abundantly available in all sessions. This small pelagic fish tends to foraging near to the surface or water column which micoroplastics are appeared. Therefore, small pelagic anchovy (Stolephorus spp.) is fitted best to accessing microplastic pollution in marine environment. In this research, we compared micoplastics pollution on anchovies from these two fishing zones with twenty sampling locations in total. The microplastics are within 50-500 μm category and fiber shape (microfiber). An intestine organ was isolated from anchovy (n=15) and destructed with 10mL Sodium laureth sulphate 0.5% and 20mL NaOH 1M. Samples were incubated in an ambient temperature within a week and fine destructed afterwards. All chemical solutions were filtered with Whatman filter paper to avoid contaminations. Microplastics in 50-500 μm category are identified from Eastern Indian Ocean’s sample as 225±4.81 par idv-1 and Western Central Pacific Ocean’s sample as much as 115±2.92 par idv-1. Microfiber also detected in sample from Eastern Indian Ocean (104±5.76 par idv-1) and Western Central Pacific Ocean (77±5.80 par idv-1). Statistical analysis shows microplastics in 50-500 μm category (Sig. 0.944) and microfiber (Sig.  0.617) are not significantly different (> Sig. 0.05) between the two fishing zones. In conclusion, microplastics in 50-500 μm and fiber shape are out spreading in Indonesia fishing zone and easy to find from its pelagic fish commodity like anchovy.