Jurnal Biologi Tropis
Vol. 26 No. 2 (2026): April - Juni

Microplastic Abundance and Characteristics in Digestive Tract of Fish Tongkol Euthynnus affinis from Coastal Area of Ampenan, Mataram

Oktry Zoelvianti (Universitas Mataram)
Lalu Zulkifli (Universitas Mataram)
Abdul Syukur (Universitas Mataram)
Karnan Karnan (Universitas Mataram)



Article Info

Publish Date
25 May 2026

Abstract

The rise in plastic usage in Indonesia has resulted in a buildup of plastic waste both on land and in water bodies. Because it does not break down easily due to the lack of microorganisms that can degrade it, plastic remains in the environment and pollutes various living beings. Thus, it is important to conduct studies on microplastic contamination to evaluate the safety of fish, which is a widely eaten source of food. This study aimed to determine the abundance and characteristics of microplastics in Ikan Tongkol (Euthynnus affinis) from the coastal waters of Ampenan Beach. Sampling was conducted using a random sampling method. Tuna samples were collected from fishermen along the Ampenan coast three times, totaling 30 fish. The analysis was conducted through sample preparation, oxidation of organic matter, filtration, and microscopic observation. The results showed that microplastics had accumulated in the digestive tract of the Euthynnus affinis, with an abundance of 2.3 MP/Ind. The most dominant type of microplastic found was fiber, accounting for 65% of the total sample, with black being the predominant color. Four types of microplastics were identified in the digestive tract: 65% fiber, 20% fragments, 10% film, and 5% granules.

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Journal Info

Abbrev

JBT

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

Description

Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi ...