Analysis of Microplastics in the Digestive Tracts of Mackerel Tuna (Euthynnus affinis) and Skipjack Tuna (Katsuwonus pelamis) for SDG 14

Masriani Masriani; Abd. Hakim Laenggeng; Fatmah Dhafir; Aan Febriawan

doi:10.63230/jocsis.2.1.157

Authors

Masriani Masriani Tadulako University Author
Abd. Hakim Laenggeng Tadulako University Author
Fatmah Dhafir Tadulako University Author
Aan Febriawan Tadulako University Author

DOI:

https://doi.org/10.63230/jocsis.2.1.157

Keywords:

Digestive Tract, Euthynnus Affinis, Katsuwonus Pelamis, Marine Pollution, Microplastic

Abstract

Objective: Marine ecosystems are increasingly threatened by microplastic pollution, which can accumulate in commercially important fish species and potentially affect human health. This study aimed to identify the characteristics and abundance of microplastics in the digestive tracts of mackerel tuna (Euthynnus affinis) and skipjack tuna (Katsuwonus pelamis) from Boneoge waters, Donggala Regency, and examine the relationship between digestive tract size and microplastic abundance. Method: A quantitative descriptive approach was employed using 30 specimens of each fish species collected from local fishermen. Digestive tract samples were digested using 10% KOH, incubated at 75°C, filtered, and observed under a binocular microscope. Microplastic abundance was expressed as particles per gram of digestive tract weight. Simple linear regression analysis using SPSS 25 was performed to evaluate the relationship between digestive tract size and microplastic abundance. Results: Three microplastic types were identified: film, fragment, and fiber, with film being dominant in both species. Total microplastic abundance reached 3.940 particles/g in mackerel tuna and 3.071 particles/g in skipjack tuna. Regression analysis showed a weak positive relationship between digestive tract size and microplastic abundance (R² = 0.137 and 0.140), suggesting that other environmental and biological factors play a greater role. Novelty: Providing the first baseline data on microplastic contamination in mackerel tuna and skipjack tuna from Boneoge waters, Central Sulawesi, and contributes to SDG 14 (Life Below Water) by strengthening evidence-based efforts to address marine microplastic pollution.

References

Adetuyi, B. O., Mathew, J. T., Inobeme, A., Falana, Y. O., Adetunji, C. O., Shahnawaz, M., Oyewole, O. A., KIT, E., & Yerima, M. B. (2024). Sources, uses and transport of secondary microplastics from land to marine environment. In Microplastic pollution (pp. 35–49). Springer. https://doi.org/10.1007/978-981-99-8357-5_3

Alwi, I. (2015). Kriteria empirik dalam menentukan ukuran sampel pada pengujian hipotesis statistika dan analisis butir. Formatif: Jurnal Ilmiah Pendidikan MIPA, 2(2). https://doi.org/10.30998/formatif.v2i2.95

Andrady, A. L. (2011). Microplastics in the marine environment. Marine Pollution Bulletin, 62(8), 1596-1605. https://doi.org/10.1016/j.marpolbul.2011.05.030

Babaei, A. A., Reshadatian, N., & Feizi, R. (2024). A state of the art-mini review on the sources, contamination, analysis, and consequences of microplastics in water. Results in Engineering, 23, 102827. https://doi.org/10.1016/j.rineng.2024.102827

Barboza, L. G. A., Vethaak, A. D., Lavorante, B. R. B. O., Lundebye, A.-K., & Guilhermino, L. (2018). Marine microplastic debris: An emerging issue for food security, food safety and human health. Marine Pollution Bulletin, 133, 336-348. https://doi.org/10.1016/j.marpolbul.2018.05.047

Boerger, C. M., Lattin, G. L., Moore, S. L., & Moore, C. J. (2010). Plastic ingestion by planktivorous fishes in the North Pacific Central Gyre. Marine Pollution Bulletin, 60(12), 2275-2278. https://doi.org/10.1016/j.marpolbul.2010.08.007

Dai, Z., Zhang, H., Zhou, Q., Tian, Y., Chen, T., Tu, C., Fu, C., & Luo, Y. (2018). Occurrence of microplastics in the water column and sediment in an inland sea affected by intensive anthropogenic activities. Environmental Pollution, 242, 1557-1565. https://doi.org/10.1016/j.envpol.2018.07.131

Dalimunthe, A. M., Amin, B., & Nasution, S. (2021). Microplastic in the digestive tract of kurau (Polydactylus octonemus) in the coastal waters of Karimun Besar Island, Riau Islands Province. Journal of Coastal and Ocean Sciences, 2(2), 80-86. https://doi.org/10.31258/jocos.2.2.80-86

de Sousa, F. D. B. (2023). Consumer awareness of plastic: An overview of different research areas. Circular Economy and Sustainability, 3(4), 2083–2107. https://doi.org/10.1007/s43615-023-00263-4

Dey, S., Veerendra, G. T. N., Babu, P. S. S. A., Manoj, A. V. P., & Nagarjuna, K. (2024). Degradation of plastics waste and its effects on biological ecosystems: A scientific analysis and comprehensive review. Biomedical Materials & Devices, 2(1), 70–112. https://doi.org/10.1007/s44174-023-00085-w

Diningrum, T. D. B., Triyono, H., & Jabbar, M. A. (2019). Aspek Biologi Cakalang (Katsuwonus pelamis, Linnaeus 1758) di Sulawesi Tenggara. Jurnal Penyuluhan Perikanan dan Kelautan, 13(2), 139-147. https://doi.org/10.33378/jppik.v13i2.195

Dueri, S., Guillotreau, P., Jiménez-Toribio, R., Oliveros-Ramos, R., Bopp, L., & Maury, O. (2016). Food security or economic profitability? Projecting the effects of climate and socioeconomic changes on global skipjack tuna fisheries under three management strategies. Global Environmental Change, 41, 1–12. https://doi.org/10.1016/j.gloenvcha.2016.08.003

Gautam, B. P. S., Qureshi, A., Gwasikoti, A., Kumar, V., & Gondwal, M. (2024). Global scenario of plastic production, consumption, and waste generation and their impacts on environment and human health. In Advanced strategies for biodegradation of plastic polymers (pp. 1–34). Springer. https://doi.org/10.1007/978-3-031-55661-6_1

Ghosh, S., Sinha, J. K., Ghosh, S., Vashisth, K., Han, S., & Bhaskar, R. (2023). Microplastics as an emerging threat to the global environment and human health. Sustainability, 15(14), 10821. https://doi.org/10.3390/su151410821

Hasanuddin, A. (2024). Optimizing Tuna Fish Quality through a Science-Based Sustainable Partnership Approach and Ecological Management in Boneoge Village, Central Sulawesi. Jurnal Penelitian Pendidikan IPA, 10(10), 7677–7687. https://doi.org/10.29303/jppipa.v10i10.9364

Hidalgo-Ruz, V., Gutow, L., Thompson, R. C., & Thiel, M. (2012). Microplastics in the marine environment: a review of the methods used for identification and quantification. Environmental Science & Technology, 46(6), 3060-3075. https://doi.org/10.1021/es2031505

Inobeme, A., Shahnawaz, M., Adetunji, C. O., Mathew, J. T., Adetuyi, B. O., Popoola, O. A., Olaitan, F. Y., Akinbo, O., Kolawole, O. M., & Oyewole, O. A. (2024). Primary microplastic: source, uses, transportation from land to marine environment. In Microplastic pollution (pp. 23–33). Springer. https://doi.org/10.1007/978-981-99-8357-5_2

Jiang, S., Jiao, S., Shen, L., Wang, Y., & Wan, Y. (2025). Fragmentation dynamics of granular materials: the role of particle shape and moisture content. Acta Geotechnica, 20(11), 5663-5681. https://doi.org/10.1007/s11440-025-02687-8

Labibah, W., & Triajie, H. (2020). Keberadaan mikroplastik pada ikan swanggi (priacanthus tayenus), sedimen dan air laut di PERAIRAN Pesisir Brondong, Kabupaten Lamongan. Juvenil: Jurnal Ilmiah Kelautan dan Perikanan, 1(3), 351-358. https://doi.org/10.21107/juvenil.v1i3.8563

Mohamadi, M. (2023). Plastic types and applications. Plastic Waste Treatment and Management: Gasification Processes, 1–19. https://doi.org/10.1007/978-3-031-31160-4_1

Ory, N. C., Sobral, P., Ferreira, J. L., & Thiel, M. (2017). Amberstripe scad Decapterus muroadsi (Carangidae) fish ingest blue microplastics resembling their copepod prey along the coast of Rapa Nui (Easter Island) in the South Pacific subtropical gyre. Science of the Total Environment, 586, 430-437. https://doi.org/10.1016/j.scitotenv.2017.01.175

Prameswari, A. P., Muhammad, F., & Hidayat, J. W. (2022). Kandungan mikroplastik pada ikan belanak (Mugil cephalus) dan kerang hijau (Perna viridis) di Pantai Mangunharjo Semarang dan Pantai Sayung Demak. Bioma: Berkala Ilmiah Biologi, 24(1), 36-42. https://doi.org/10.14710/bioma.24.1.36-42

Rambacher, J., Pantos, O., Hardwick, S., Cameron, E. Z., & Gaw, S. (2023). Transforming encounters: A review of the drivers and mechanisms of macrofaunal plastic fragmentation in the environment. Cambridge Prisms: Plastics, 1, e6. https://doi.org/10.1017/plc.2023.6

Rifandi, R. A., & Ratnasari, A. V. (2023, July). Abundance of microplastics and hazard to the environment in estuary water in Pemalang, Central Java, Indonesia. In IOP Conference Series: Earth and Environmental Science (Vol. 1211, No. 1, p. 012012). IOP Publishing. https://doi.org/10.1088/1755-1315/1211/1/012012

Sarasita, D., Yunanto, A., & Yona, D. (2020). Microplastics abundance in four different species of commercial fishes in Bali Strait. Jurnal Iktiologi Indonesia, 20(1), 1-12. https://doi.org/10.32491/jii.v20i1.508

Squires, D., Jiménez-Toribio, R., Guillotreau, P., & Anastacio-Solis, J. (2023). The ex-vessel market for tropical tuna in Manta, Ecuador. A new key player on the global tuna market. Fisheries Research, 262, 106646. https://doi.org/10.1016/j.fishres.2023.106646

Velmurugan, B., Samima, N., Banu, A. A., Safrin, J. H., & Balan, A. (2026). From Catch to Consumer: Oceanic Wealth and Economic Insights of Fisheries at the State, National and Global Perspective. Deep Science Publishing.

Wan, Z., Wang, C., Zhou, J., Shen, M., Wang, X., Fu, Z., & Jin, Y. (2019). Effects of polystyrene microplastics on the composition of the microbiome and metabolism in larval zebrafish. Chemosphere, 217, 646-658. https://doi.org/10.1016/j.chemosphere.2018.11.070

Wotton, R. S. (2020). Methods for capturing particles in benthic animals. In The Biology of Particles in Aquatic Systems, Second Edition (pp. 183-204). CRC Press. https://doi.org/10.1201/9781003070146-8

Zhang, D., Liu, X., Huang, W., Li, J., Wang, C., Zhang, D., & Zhang, C. (2020). Microplastic pollution in deep-sea sediments and organisms of the Western Pacific Ocean. Environmental Pollution, 259, 113948. https://doi.org/10.1016/j.envpol.2020.113948