Assessment of blue swimming crab (Portunus pelagicus) fishery and sustainability in Mantatao Island, Calape, Bohol
Paper Details
Assessment of blue swimming crab (Portunus pelagicus) fishery and sustainability in Mantatao Island, Calape, Bohol
Abstract
The blue swimming crab (BSC) fishery is a vital source of livelihood for coastal communities throughout Bohol. This study aims to determine the status of blue swimming crab fishery, analyze the market flow, and identify the problems or challenges impacting the BSC industry. A descriptive survey method of research was used in the study with the aid of survey-questionnaires validated with personal interviews and focus group discussion. The study was conducted in Mantatao Island, Calape, Bohol for two months from November to December 2022. A total of 12 crab fishers and 1 crab trader were surveyed. Results revealed that the crab fishers in Mantatao Island employed two types of fishing methods; the traditional handpicking and spearfishing. Results also indicated that there was a decline in BSC catch coupled with a low average daily catch of 0.91 kg on November and 0.82 kg on December. The BSC products of the crab fishers are primarily distributed locally to different channels, including crab trader, local and nearby wet markets, and end consumers. Challenges identified include declining catch rates attributed to a lack of awareness among industry players regarding existing BSC fishery regulations. Despite the stability of BSC fishery in Mantatao Island, the industry faces sustainability threats. Addressing these challenges is crucial for ensuring the long term viability of the BSC fishery and supporting the livelihoods of local fishers.
Batoy CB, Sarmago JF, Pilapil BC. 1980. Breeding season, sexual maturity and fecundity of blue crab, Portunus pelagicus in selected coastal waters in Leyte and vicinity, Philippines. Ann Trop Res 9, 157–177.
Corpuz MAC, Mananghaya KMV. 2017. PCAARRD program aims for increased blue swimming crab production. Electronic Data Information Source.
de la Cruz MT, de la Cruz JO, Tan IL, Ruizo EK. 2015. The blue swimming crab (Portunus pelagicus) fishery of Eastern Visayas, Philippines. Philipp J Nat Sci 20, 25–45.
Department of Agriculture–Bureau of Fisheries and Aquatic Resources. 2013. The Philippine Blue Swimming Crab Management Plan, 33 pp.
Ecosystems Improved for Sustainable Fisheries. 2015. Value chain analysis for blue swimming crabs in Danajon Bank, Bohol, 56p.
Food and Agriculture Organization. 2013. FAO Fisheries Aquaculture- Aquatic species: Portunus pelagicus. Electronic Data Information Source.
Food and Agriculture Organization. 2021. Fisheries management for the blue swimmer crab (Portunus pelagicus) in the Java Sea, Indonesia. Electronic Data Information Source.
Germano BP, Cesar SA, Mazo AM, Melgo JF. 2003. Inventory of commercially important invertebrates in Leyte and Samar. Univ Philipp Visayas J Nat Sci 8, 247–270.
Germano BP, Melgo JF. 2003. The population, reproductive and fishery biology of the blue crab, Portunus pelagicus, in Leyte and Samar and management implications. Univ Philipp Visayas J Nat Sci 8, 63–82.
Germano BP, Melgo JLF, Evangelio JC. 2006. Population, reproduction and fishery biology of the blue crab Portunus pelagicus (Linnaeus, 1758) in Eastern Visayas. Terminal Report, Vol. 3. AFMA–Invertebrate Project of Leyte State University and the Department of Agriculture–Bureau of Agriculture Research, 116p.
Germano BP. 1994. Effects of unilateral eyestalk ablation on growth in juvenile blue crabs Portunus pelagicus (L.) (Crustacea: Decapoda: Portunidae). Asian Fish Sci 7, 19–28.
Green SJ, Flores JO, Dizon-Corrales JQ, Martinez RT, Nuñal DRM, Armada NB, White AT. 2004. The fisheries of Central Visayas, Philippines: Status and trends. Coastal Resource Management Project of the Department of Environment and Natural Resources and Bureau of Fisheries and Aquatic Resources of the Department of Agriculture. Cebu City, Philippines, 159p.
Ingles JA, Braum E. 1989. Reproduction and larval ecology of the blue swimming crab Portunus pelagicus in Ragay Gulf, Philippines. Int Rev Ges Hydrobiol Hydrogr 74, 471–490.
Ingles JA, Flores JO. 2000. Addressing ecological impacts of fishing gears: A case study of the blue crab fishery of Guimaras Strait and Visayan Sea, Philippines. In: Arimoto T (ed.). Proc. Third Japan Society for the Promotion of Science-DGHE International Symposium on Fisheries Science in Tropical Areas, Bogor, Indonesia, pp. 382–387.
Ingles JA. 1996. The crab fishery of Bantayan, Cebu, Philippines. Institute of Marine Fisheries and Oceanology, 33p.
Ingles JA. 2004. Status of the blue crab fisheries in the Philippines. In: Turbulent Seas: The Status of Philippine Marine Fisheries. Coastal Resource Management Project, Cebu City, Philippines, pp. 47–52.
Lai JCY, Ng PKL, Davie PJF. 2010. A revision of the Portunus pelagicus (Linnaeus, 1758) species complex (Crustacea: Brachyura: Portunidae), with the recognition of four species. Raffles Bull Zool 58(2), 199–237.
Nieves PM, de Jesus S, Guiriba MAB, Macale AMB, Belen S, Corral G. 2013. Capture fisheries assessment of commercially important marine crabs in Sorsogon Bay and San Miguel Bay. J Kuroshio Sci 7(1), 59–67.
Philippine Statistics Authority. 2011. Fisheries statistics of the Philippines, 2004–2011. Electronic Data Information Source.
Philippine Statistics Authority. 2016. Fisheries statistics of the Philippines, 2014–2016, 578 pp.
Seafood Watch. 2022. Wild caught blue swimming crab in the Philippines. Electronic Data Information Source.
Christian Rolan C. Laurden, Gesila Grace P. Pañares, Maria Danesa S. Rabia, Rio A. Nicanor, Marjon A. Josol, Jomari A. Orillosa, 2025. Assessment of blue swimming crab (Portunus pelagicus) fishery and sustainability in Mantatao Island, Calape, Bohol. Int. J. Biosci., 26(2), 74-80.
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