Blue swimming crab (Portunus pelagicus) catch and fishing effort: Perspective of crabbers in the northern Catanduanes, Philippines
Paper Details
Blue swimming crab (Portunus pelagicus) catch and fishing effort: Perspective of crabbers in the northern Catanduanes, Philippines
Abstract
Crab fishermen in Northern Catanduanes primarily rely on crab fishing for income. This study focused on the perspectives of crab fishermen in Northern Catanduanes regarding the catch and effort of blue swimming crab from February to May 2023. Results showed that crab fishers with an age range of 19–75 years old and an average of 12.5 years of crabbing used three fishing gears: a bottom-set gill net (BSGN), a crab pot (CP), and a crab lift net (CLN). The catch composition of BSGN in Northern Catanduanes showed that 56.89% were blue swimming crabs, with 43.11% being by-catch species including parrot fish, mullet, lobster, siganids, and others. In contrast, the catch composition of Crab Pots (CP) was 61.67% blue swimming crabs and 38.33% by-catch, including shrimp, lobster, prawns, and other fish. However, the catch composition in CLN showed a lower proportion of target catch (37.50%) compared to by-catch. The peak fishing season for most municipalities occurred between May and July, which coincides with Habagat, while the lean season varied from October to February. The catch per unit effort (CPUE) of the BSGN ranged from 0.20-0.46 kg/segment/hour, which was higher in contrast to the CPUE of CP (0.01-0.11 kg/cp/hour) and CLN (0.04-0.20 kg/liftnet/hour). An estimated annual production of BSC in Northern Catanduanes was recorded at 697.21 metric tons during the peak season and 119.47 metric tons during the lean season. Therefore, the BSC fisheries are threatened, and preventative steps are needed, including reducing fishing pressure, practicing single-ply nets with larger mesh sizes, finding alternate sources of income, and raising awareness through campaigns like IEC materials.
BFAR. 2013. The Philippine blue swimming crab management plan. Retrieved from http://www.bfar.da.gov.ph/pages/announcements/1Final%20Approved%20Version%20BSCMP%20January%2024%202013.pdf
Camacho AS, Aypa SM. 2001. Research needs and data on production of portunid crabs in the Philippines. Asian Fisheries Science 14(2), 243-245.
DA-BFAR. 2013. The Philippine Blue Swimming Crab Management Plan. Retrieved from https://www.bfar.da.gov.ph/new/announcement_archive/1Final%20Approved%20Version%20BSCMP%20January%2024%202013.pdf
De la Cruz MT, De la Cruz JO, Tan IL, Ruizo EK. 2015. The blue swimming crab (Portunus pelagicus) fishery of Eastern Visayas, Philippines. UPV Journal of National Science 20(1), 25-45.
Germano BP, Melgo JF. 2003. The population, reproductive, and fishery biology of the blue crab, Portunus pelagicus in Leyte and Samar and management implications. UPV Journal of Natural Science 8, 63-82.
Ingles JA. 2004. Status of blue crab fisheries in the Philippines, p 47-52. In DA-BFAR In turbulent seas: The status of Philippine marine fisheries. Coastal Resource Management Project, Cebu City, Philippines, 378p.
Kailola PJ, Williams MJ, Stewart PC, Mcnee A, Grieve C. 1993. Australian fisheries resources. Bureau of Resource Sciences, Department of Primary Industries and Energy, and the Fisheries Research and Development Corporation, Canberra, Australia, 422p.
Macale AMB, Nieves PM. 2019. Stakeholders’ perception on the status of blue swimming crabs Portunus pelagicus (Linnaeus, 1758) and performance of lying-in hatchery concept in San Miguel Bay, Philippines. AACL Bioflux 12(2), 413-416.
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. Kuroshio Science 7(1), 59-67.
Philippine Statistics Authority. 2014-2023. OpenStat. Retrieved from https://openstat.psa.gov.ph
PSA. 2019. Per Capita: Gross National Income, Gross Domestic Product, and Household Final Consumption Expenditure. Retrieved April 2018 from http://psa.gov.ph/nap-press-release/sector3/Per%20Capita%20GNI
Yap EES. 2020. Global sustainable supply chains for marine commodities: Root cause analysis and development of the national management plan for the blue swimming crab marine commodity (GMC: BSC) blue swimming crab national management plan: A national framework for the management of the Philippine blue swimming crab fisheries (3rd Draft). Bureau of Fisheries and Aquatic Resources. Retrieved from https://www.bfar.da.gov.ph/wp-content/uploads/2022/07/Blue-Swimming-Crabs-National-Management-Plan.pdf
Recie B. Bonaos, Jozem Niňo I. Morales, 2024. Blue swimming crab (Portunus pelagicus) catch and fishing effort: Perspective of crabbers in the northern Catanduanes, Philippines. J. Biodiv. Environ. Sci., 25(3), 23-29.
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