Vulnerability to illegal, unreported and unregulated (IUU) fishing: The case of the Talusan, Zamboanga Sibugay, Philippines

Paper Details

Research Paper 14/01/2026
Views (95)
current_issue_feature_image
publication_file

Vulnerability to illegal, unreported and unregulated (IUU) fishing: The case of the Talusan, Zamboanga Sibugay, Philippines

Angelica M. Darunday*, Judy Ann H. Fernandez, Shekinah L. Ogoc, Norlika D. Moti, Larry C. Herbito, Armi G. Torres
J. Biodiv. & Environ. Sci. 28(1), 138-150, January 2026.
Copyright Statement: Copyright 2026; The Author(s).
License: CC BY-NC 4.0

Abstract

Illegal, unreported, and unregulated (IUU) fishing remains a major global threat to marine biodiversity, food security, and coastal livelihoods. This study assessed, for the first time, the vulnerability of the Municipality of Talusan, Zamboanga Sibugay, Philippines to IUU fishing using the Philippine IUU Fishing Index and Threat (I-FIT) Tool developed by the Bureau of Fisheries and Aquatic Resources (BFAR) in partnership with the States Agency for International Development (USAID). The assessment applied eight key indicators measured on a 1–4 scale representing low to very high vulnerability. Results show an overall vulnerability score of 2.63, indicating moderate risk to IUU fishing and slightly exceeding the national average of 2.53. Two vulnerability factors registered very high risk: fisheries overcapacity, with approximately 236 fishers per kilometer of coastline exerting intense pressure on fish stocks, and the presence of illegal fishers supported by third-party groups that weaken enforcement integrity. In addition, two attracting factors produced high risk levels, namely rising market prices of illegally targeted species that incentivize unlawful fishing, and limited local government unit (LGU) budget allocation that constrains effective fisheries and coastal resource management. These findings highlight governance gaps, economic pressures, and enforcement limitations that increase Talusan’s exposure to IUU fishing. The study recommends strengthening policy implementation and law enforcement, increasing LGU budget allocation, expanding alternative livelihood programs, enhancing community participation, and intensifying public information campaigns. Overall, the study provides insights to support fisheries management strategies and contributes to achieving Sustainable Development Goal 14.4, which aims to end IUU fishing globally.

Alvarico CB, Dela Cruz RM, Catapang MC. 2021. Sustaining Philippine coastal fisheries through integrated management and policy reform. Philippine Journal of Environmental Science 40(2), 45–62.

Barut NC, Garces LR. 2020. Managing Philippine coastal fisheries: lessons from community-based approaches. Marine Policy 120, 104152. https://doi.org/10.1016/j.marpol.2020.104152

Bureau of Fisheries and Aquatic Resources, United States Agency for International Development. 2021. Counting the cost: IUU fishing in the Philippines (executive summary).

Bureau of Fisheries and Aquatic Resources. 2023. Philippine IUU fishing assessment report 2023: using the I-FIT tool.

Carneiro G, Martins R. 2022. Governance challenges in decentralized fisheries management: lessons for developing countries. Ocean & Coastal Management 223, 106146. https://doi.org/10.1016/j.ocecoaman.2022.106146

Catarci C. 2020. Global review of illegal, unreported, and unregulated fishing and its impacts on fisheries management. Food and Agriculture Organization of the United Nations.

David LT, Santos JR, Cruz MG. 2022. Assessing vulnerability and resilience of coastal communities to IUU fishing in the Philippines. Journal of Coastal Research 38(3), 612–625. https://doi.org/10.2112/JCOASTRES-D-21-00057.1

De Guzman M. 2023. Article on conservation zones and fish stock recovery.

Department of Agriculture–Bureau of Fisheries and Aquatic Resources. 2022a. Philippine IUU fishing index and threat (I-FIT) assessment tool.

Department of Agriculture–Bureau of Fisheries and Aquatic Resources. 2023. IUU fishing assessment report: status of implementation in Philippine coastal municipalities.

Food and Agriculture Organization. 2022. The state of world fisheries and aquaculture 2022: towards blue transformation. https://doi.org/10.4060/cc0461en

Food and Agriculture Organization. 2023. Guidelines for assessing IUU fishing prevalence and vulnerability in coastal nations. FAO Fisheries and Aquaculture Technical Paper No. 687.

Green SR, Johnson AM, Williams CT. 2003. The relationship between fisher density and coastal resource depletion. Journal of Marine Ecology and Management 15(3), 45–62.

Khan AR, Velasco DA, Ortega JL. 2023. Decentralized fisheries governance and enforcement in Southeast Asia: a comparative analysis. Journal of Environmental Policy and Governance 33(2), 198–215. https://doi.org/10.1002/eet.2050

Mendoza MJ. 2023. Illegal, unreported, and unregulated fishing in Philippine waters: patterns, governance, and management responses. Philippine Journal of Marine and Coastal Studies 12(1), 33–52.

Oracion EG. 2020. Coastal resource management and local governance in the Philippines: between policy and practice. Asia Pacific Journal of Public Administration 42(3), 193–208. https://doi.org/10.1080/23276665.2020.1803872

Pauly D. 2021. Global perspectives on illegal, unreported, and unregulated fishing: ecological and socio-economic impacts. Marine Policy 132, 104670. https://doi.org/10.1016/j.marpol.2021.104670

Perez RT, Rola AC, Cardenas EM. 2021. Socioeconomic drivers of illegal fishing in small-scale coastal communities of the Philippines. Ocean & Coastal Management 209, 105688.

Santos RJ, De Vera MC, Valerio AA. 2021. Fisheries productivity and food security in the Philippines: challenges and policy options. Philippine Agricultural Scientist 104(1), 71–86.

Teh LC, Pauly D. 2022. Overcapacity and competition among fishers for dwindling resources. Fisheries Research and Ecology 29(5), 330–345.

Villanueva RD, Magbanua MP, Delos Santos CE. 2022. Institutional challenges in implementing the amended Philippine Fisheries Code (RA 10654). Philippine Journal of Development Studies 49(2), 22–38.

Related Articles

Analysis of soil physicochemical characteristics and heavy metal concentrations in Lourdes, Alubijid, Misamis Oriental

Prosibeth G. Bacarrisas*, Romeo M. del Rosario, Angelo Mark P. Walag, J. Biodiv. & Environ. Sci. 28(2), 49-58, February 2026.

Tick-borne blood parasites in small ruminants: An epidemiological study of Anaplasma sp. and Babesia sp. in Cagayan, Philippines

Kathlyn B. Cruz*, Jhaysel G. Rumbaoa, Mary Ann M. Santos, Bryan Jerome R. Bassig, John Michael U. Tabil, J. Biodiv. & Environ. Sci. 28(2), 34-48, February 2026.

Diversity, spatial and seasonal distribution of gastropod molluscs in Taï national park (Côte d’Ivoire): Influence of environmental factors

Doue Obin*, Memel Jean-Didié, Kouadio Behegbin Habib Herbert, J. Biodiv. & Environ. Sci. 28(2), 20-33, February 2026.

Assessment of heavy metal levels in spring water of Dansolihon, Cagayan de Oro City

Faith M. Guimary*, Romeo M. Del Rosario, Angelo Mark P. Walag, J. Biodiv. & Environ. Sci. 28(2), 12-19, February 2026.

Evaluating curriculum alignment, accuracy, and readability of ‘environmental disaster, sanitation, and waste management

Analyn I. Diola*, Priscilla R. Castro, J. Biodiv. & Environ. Sci. 28(2), 1-11, February 2026.

Above and below ground carbon stock assessment of natural and planted mangrove forest in Davao Occidental, Philippines

C. F. Mangaga*, W. T. Tatil, H. A. R. Quiaoit, P. D. Suson, J. Biodiv. & Environ. Sci. 28(1), 157-167, January 2026.

Extraction and characterization of distilled water from by-product of salt refinery processing

Analyn I. Diola*, Eric A. Cunanan, Irene A. De Vera, Christian Garret F. Aquino, Julie M. Agpaoa, J. Biodiv. & Environ. Sci. 28(1), 151-156, January 2026.

Socio-ecological dimensions of intertidal gleaning: The use of local ecological knowledge to identify commercially important gastropods in Iligan Bay, Philippines

Katrina Flores, Armi G. Torres, Wella T. Tatil, Ivane R. Pedrosa-Gerasmio*, J. Biodiv. & Environ. Sci. 28(1), 126-137, January 2026.