Analysis of Thresher Shark (Alopias pelagicus) Conservation Policy and the Role of Local Communities in Conservation in Indonesian Waters

Authors

Yohanes Soares , Nur Aini Bunyani , Abdonia W. Finmeta

DOI:

10.29303/jbt.v25i4.10293

Published:

2025-10-30

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Abstract

The population of the pelagic thresher shark (Alopias pelagicus) in Indonesian waters continues to decline due to intense fishing pressure and weak implementation of conservation policies. This study aims to analyze the effectiveness of Indonesia’s thresher shark conservation policies and to assess the role of local communities in supporting conservation efforts. A qualitative descriptive approach was applied through literature review, policy document analysis, and interviews with relevant stakeholders, including fishers, local authorities, and conservation organizations. Data were analyzed using content analysis to identify gaps between policy formulation and field implementation. The findings show that although national regulations protect A. pelagicus, their enforcement remains limited due to inadequate monitoring, lack of public awareness, and insufficient livelihood alternatives for fishers. Local communities possess significant potential to contribute to conservation through community-based monitoring and marine ecotourism initiatives. The study concludes that successful conservation of the thresher shark requires stronger synergy between national policies and local initiatives. Key recommendations include strengthening community capacity, enhancing law enforcement, and developing sustainable economic incentives that support conservation.

Keywords:

Conservation Policy Thresher shark

References

Alghozali, F. A., Salsabila, R., Gustianto, M. W. D., Putri, H. M. I. H., Himawan, M. R., Yuneni, R. R., ... Rezkiani, K. (2023). Diet analyses of the pelagic thresher shark, Alopias pelagicus (Lamniformes: Alopiidae), from the Lombok Strait waters, Indonesia. Biodiversitas, 24, 3708–3714. https://smujo.id/biodiv/article/view/14752

Anjayanti, S., et al. (2017). Pola pertumbuhan hiu tikus di perairan Indonesia. Journal of Marine Biology, 23(2), 56–64.

Anung, A., & Widodo, A. (2002). Tinjauan perikanan hiu di Indonesia. Marine Fisheries Research Journal, 11(3), 15–23.

Bonfil, R. (2002). Overview of world elasmobranch fisheries (FAO Fisheries Technical Paper No. 341). Rome: FAO.

Budi Raharjo, R., Hartati, R., & Redjeki, S. (2024). Population status of thresher shark listed in Appendix II CITES of Southern Java Seas, Indonesia. Egyptian Journal of Aquatic Research. https://doi.org/10.1016/j.ejar.2024.03.007

Camhi, M., Fowler, S. L., Musik, J. A., Brautigam, A., & Fordham, S. V. (1998). Sharks and the relatives—ecology and conservation. IUCN/SSC Shark Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK, 4, 39pp.

Cavanagh, R. D., et al. (2003). The IUCN Red List of Threatened Species: Elasmobranchii. Gland, Switzerland: IUCN.

Chen, C. T., et al. (2017). Migration and habitat use of thresher sharks in Indo-Pacific waters. Aquatic Ecology Journal, 29(4), 345–358.

Coleman, D. (1996). Growth and reproductive biology of sharks. Marine Biology Review, 20(1), 45–63.

Cortés, E. (2000). Life history patterns and vulnerabilities of sharks. Ecological Applications, 10(2), 367–379.

Daley, R. K., et al. (2002). Impacts of overfishing on shark populations in Southeast Asia. Oceanic Research Journal, 18(2), 99–115.

Hoenig, J. M., & Gruber, S. H. (1990). Shark mortality rates and management implications. Fisheries Bulletin, 88(4), 85–94.

International Union for Conservation of Nature (IUCN). (2021). Status of Alopias pelagicus in global marine waters. Retrieved from https://www.iucnredlist.org

Mustika, P. L., et al. (2018). Community-based conservation of sharks in Indonesia. Marine Policy Journal, 43(1), 22–30.

Nahdliya, R. (2021). Estimation of exploitation rates for Alopias spp. in Banyuwangi waters. Indonesian Journal of Fisheries Science, 12(1), 89–97.

Nijman, V. (2023). Illegal trade in protected sharks: The case of artisanal whale shark meat fisheries in Java, Indonesia. Animals, 13(16), 2656. https://doi.org/10.3390/ani13162656

Novianto, D., Widiarto, S. B., Muslim, A., Purnomo Aji, M. W., & Prakoso, K. (2024). Shark species composition and distribution of fishing ground based on fishing gear in Cilacap Ocean Fishery Port. Saintek Perikanan: Indonesian Journal of Fisheries Science and Technology, 20(4), 197–206. http://ejournal.undip.ac.id/index.php/saintek/article/view/70968

Ostrom, E. (1990). Governing the commons: The evolution of institutions for collective action. Cambridge University Press.

Prasicilia Sitorus, Y. D., Astarini, I. A., & Antara, I. M. (2023). Identification of by-catch sharks in the Indian Ocean based on DNA barcoding in conservation effort. Journal of Marine and Aquatic Sciences, 9(2), 162–169.

Ramadhan, P. A., Baskoro, M., & Mawardi, W. (2025). Composition of shark catches with conservation status in Mukomuko District, Bengkulu. International Journal of Marine Engineering Innovation and Research, 9(3), 451–456. https://doi.org/10.12962/j25481479.v9i3.4904

Rafid Shidqi, & Dewi Sari. (2019). Vertical migration patterns of Alopias pelagicus in Alor waters. Marine Ecosystem Dynamics Journal, 15(3), 198–209.

Rianto, J., Riani, E., & Warlina, L. (2023). The influence of perceptions on fisherman understanding and fish traders and management strategies of sharks and rays in conservation status in Cilacap Regency. Pelagicus, 4(1).

Seki, M. P., et al. (1998). Reproductive biology of sharks in the Indo-Pacific. Marine Fisheries Science, 34(1), 1–12.

Semba, Y., et al. (2016). Population status of thresher sharks in the western Pacific. Fisheries Research Journal, 78(2), 145–156.

Shidqi, R. A., Erdmann, M. V., Setyawan, E., Lezama-Ochoa, N., Sari, D. R., Sianipar, A. B., ... Croll, D. A. (2024). Identifying spatial movements and residency of pelagic thresher sharks (Alopias pelagicus) using satellite and passive acoustic telemetry to inform local conservation in central Indonesia. Frontiers in Fish Science. https://doi.org/10.3389/frish.2024.1391062

Shidqi, R. A., Sari, D. R., Alopen, J., Bang, Y. M., Arianto, I., Kopong, P. N. S., ... Booth, H. (2025). Designing and evaluating alternative livelihoods for shark conservation: A case study on thresher sharks in Alor Island, Indonesia. Oryx: The International Journal of Conservation, 59(1), 19–30. https://doi.org/10.1017/S0030605324001376

Stevens, J. D., et al. (2000). The biology and ecology of sharks in global oceans. Global Marine Biodiversity, 12(3), 99–115.

Sulaiman, M., & Triharyuni, N. (2021). Value, trade, and conservation challenges of sharks in Indonesia. Indonesian Fisheries Policy Review, 7(2), 44–59.

Suzuki, H. (2002). Utilization of shark products in Indonesia. Asia-Pacific Marine Studies Journal, 10(2), 155–163.

White, W. T., et al. (2020). Shark fin trade in Indonesia and its impact on thresher shark populations. Marine Policy Journal, 53(1), 45–59.

Wibowo, H., & Joesidawati, Y. (2023). Shark and ray production in Indonesia: Status and management challenges. Indonesian Journal of Marine Policy and Management, 5(2), 110–124.

World Wildlife Fund (WWF) Indonesia. (2025). Community-based conservation cuts thresher shark fishing by 91% in Indonesia: Study. Mongabay News. https://news.mongabay.com/2025/03/community-based-conservation-cuts-thresher-shark-fishing-by-91-in-indonesia-study/

Author Biographies

Yohanes Soares, Universitas Persatuan Guru 1945 NTT

Author Origin : Indonesia

BIODATA PENULIS

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JORITHA NAISANU

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Naisanu lahir di Kota Kupang pada tahun 1979 dan menyelesaikan program S2 di Universitas Gadjah Mada dengan Jabatan akademik Lektor.

Naisanu saat ini bekerja sebagai salah satu Dosen di Fakultas Pertanian Universitas Persatuan Guru 1945 NTT.

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Nur Aini Bunyani, Universitas Persatuan Guru 1945 NTT

Author Origin : Indonesia

Abdonia W. Finmeta, Universitas Persatuan Guru 1945 NTT

Author Origin : Indonesia

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How to Cite

Soares, Y., Bunyani, N. A., & Finmeta, A. W. (2025). Analysis of Thresher Shark (Alopias pelagicus) Conservation Policy and the Role of Local Communities in Conservation in Indonesian Waters. Jurnal Biologi Tropis, 25(4), 6059–6066. https://doi.org/10.29303/jbt.v25i4.10293

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