PENGARUH CELAH PELOLOSAN BUBU LIPAT TERHADAP HASIL TANGKAPAN DAN UKURAN RAJUNGAN DI PERAIRAN UTARA BEKASI
Abstract
Penangkapan rajungan menggunakan alat tangkap bubu lipat banyak dioperasikan di perairan Pantai Utara Jawa, namun memiliki selektifitas yang rendah. Untuk itu selektifitas rajungan yang tertangkap perlu mendapat perhatian hingga tangkapan rajungan memiliki ukuran layak tangkap sesuai peraturan. Penelitian uji coba pengoperasian bubu lipat dengan celah pelolosan berupa pemotongan mata jaring (tanpa frame) dengan mata jaring tanpa pemotongan sebagai kontrol dan pemotongan 2, 3 dan 4 mata jaring (perlakuan), sehingga terbentuk celah pelolosan berbentuk persegi panjang. Tujuan penelitian adalah untuk mengetahui pengaruh pemotongan mata jaring sebagai celah pelolosan terhadap jumlah dan selektifitas ukuran hasil tangkapan. Hasil analisis menunjukkan bahwa pemotongan mata jaring sebagai celah pelolosan berpengaruh nyata terhadap jumlah tangkapan bubu lipat rajungan. Analisa lanjutan menggunakan uji Beda Nyata Terkecil (BNT) menunjukkan hasil tangkapan rajungan bubu lipat dengan celah pelolosan 1 mata jaring (kontrol) sebanyak (8,38 ekor/setting) tidak berbeda nyata dengan celah pelolosan 2 dan 3 mata jaring (6,25 ekor/setting dan 8,63 ekor/setting) dan berbeda nyata dengan penggunaan celah pelolosan 4 mata jaring sebesar (2,25 ekor/setting). Prosentase ukuran lebar karapas (Cw = carapace width) rajungan layak tangkap (>100 mm) dan ukuran rajungan pertama kali tertangkap (Lc) semakin tinggi dengan meningkatnya jumlah mata jaring terpotong. Nilai tertinggi prosentase tangkapan rajungan ukuran besar (CW >100 mm) diperoleh pada bubu lipat dengan pemotongan 3 mata jaring mencapai 82,6% dengan nilai Lc sebesar 105,03 mm serta celah pelolosan 4 mata jaring mencapai 83,3 % dengan nilai Lc sebesar 111,78 mm.
Catching blue swimming crab using collapsible traps is operated in the North Java sea but has low selectivity. For this reason, the selectivity of blue swimming crab needs attention so that the catch of blue swimming crab has a legal-size according to the regulations. Trial research on the operation of collapsible traps with an escape gap in the form of cutting mesh (without frame) with the meshes without cutting for control and cutting 2, 3 and 4 meshes (treatment) so that a rectangular escape gap is formed. The research objective was to determine the effect of shortening the mesh as an escape gap on the number and selectivity of the catch. The analysis results showed that cutting the mesh as an escape gap significantly affected the yield of collapsible traps. Further analysis using the Least Significant Difference test (LSD) showed that the catch of collapsible traps with one mesh (control) is (8.38 fishes/setting) was not significantly different from 2 and 3 meshes of escape gaps (6.25 and 8.63 fishes/setting) and substantially different from the use of 4 meshes of escape gap (2.25 fishes/setting). The percentage of carapace width (Cw) of the crab fit to catch (>100 mm) and the size of the crab length of first seen (Lc) was higher with the increasing number of cut mesh. The highest percentage of large crab catch (Cw >100 mm) was found in folding traps with three mesh cutting reached 82.6% with an Lc value of 105.03 mm and a gap of 4 meshes reaching 83.3% with an Lc value of 111.78 mm.
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Anam, A., Redjeki, S., & Hartati, R. (2018). Sebaran Ukuran Lebar Karapas Dan Berat Rajungan (Portunus pelagicus) Di Perairan Betahwalang Demak. Journal of Marine Research, 7(4), 239–247.
Boutson, A., Mahasawasde, C., & Mahasawasde, S. (2013). The Suitable Escape Gap of Selective Collapsible Crab Trap and Appropriated Bait for Blue Swimming Crab Trap Fishery. Maejo Int. J. Sci. Technol., 7(Special), 36–42.
Broadhurst, M. K., Millar, R. B., & Hughes, B. (2017). Performance of industry-developed escape gaps in Australian Portunus pelagicus traps. Fisheries Research, 187, 120–126. https://doi.org/10.1016/j.fishres.2016.11.013
Broadhurst, M. K., Smith, T. M., Millar, R. B., Hughes, B., Raoult, V., & Gaston, T. F. (2019). Cumulative selectivity benefits of increasing mesh size and using escape gaps in Australian Portunus armatus traps. Fisheries Management and Ecology, 26(4), 319–326. https://doi.org/10.1111/fme.12351
Broadhurst, M. K., Tolhurst, D. J., Hughes, B., Raoult, V., Smith, T. M., & Gaston, T. F. (2020). Optimising mesh size with escape gaps in a dual-species portunid-trap fishery. Aquaculture and Fisheries, 5(6), 308–316. https://doi.org/10.1016/j.aaf.2019.12.007
C. Ummaiyah, Aristi D. P. F, B. B. J. (2014). Analisis Keramahan Lingkungan Bubu Rajungan Modifikasi Celah Pelolosan Di Perairan Kabupaten Rembang. Journal of Fisheries Resources Utilization Management and Technology, 6(3), 47–55. Tambahkan Nomor DOI??
Damora, A., & Nurdin, E. (2016). Beberapa Aspek Biologi Rajungan (Portunus pelagicus) di Perairan Labuhan Maringgai, Lampung Timur. Bawal, 8(1), 13–20.
Edgar, G. J. (1990). Predator-prey interactions in seagrass beds. II. Distribution and diet of the blue manna crab Portunus pelagicus linnaeus at Cliff Head, Western Australia. Journal of Experimental Marine Biology and Ecology, 139(1–2), 23–32. https://doi.org/10.1016/0022-0981(90)90035-B
Ernawati, T., Kembaren, D. D., & Wagiyo, K. (2015). Penentuan Status Stok Sumberdaya Rajungan (Portunus pelagicus Linnaeus, 1758) dengan Metode Spawing Potential Ratio di Perairan Sekitar Belitung. Jurnal Penelitian Perikanan Indonesia, 21(2), 63. https://doi.org/10.15578/jppi.21.2.2015.63-70
Hamid, A., Wardiatno, Y., Batu, D. T. F. L., & Riani, E. (2016). Distribusi Ukuran Spasial-Temporal dan Berdasarkan Tingkat Kematangan Gonad Rajungan (Portunus pelagicus Linnaeus 1758) di Teluk Lasongko, Buton Tengah, Sulawesi Tenggara. Omni-Akuatika, 12(2), 77–91. https://doi.org/10.20884/1.oa.2016.12.2.101
Harsojuwono, B. A., Arnata, I. W., & Puspawati, G. A. K. D. (2011). Rancangan Percobaan : Teori, Aplikasi SPSS dan Excel. In LINTASKATA Publishing. Listas Kata Publishing.
Hufiadi, H., Mahiswara, M., & Nurdin, E. (2017). Selektivitas Kisi-Kisi Juvenile and Trash Excluder Devices Padaalat Tangkap Trawl Mini Di Perairan Utara Jawa. Jurnal Penelitian Perikanan Indonesia, 14(4), 353. https://doi.org/10.15578/jppi.14.4.2008.353-361
Jaya, I. (2020). Rencana Pengaturan Kuota Penangkapan bagi Pengelolaan Rajungan Berkelanjutan. KOMNASKAJISKAN, 15.
Jayawiguna, M. H., Mulyono, M., Nugraha, E., Prayitno, H., & Basith, A. (2017). Biology Aspect of Blue Swimming Crabs (Portunus pelagicus) In Jakarta Bay Waters, Indonesia. Australian Journal of Basic and Applied Sciences, 11(13), 63–67.
Kailola, P. J., Williams, M. J., Stewart, P. C., Reicbelt, R. E., McNee, A., & Grieve, C. (1993). Australian Fisheries Resources. In Bureau of Resource Sciences and Fisheries Research and Develipment Coporation. https://doi.org/10.1017/CBO9781107415324.004
Kembaren, D. D., & Surahman, A. (2018). Struktur Ukuran dan Biologi Populasi Rajungan (Portunus pelagicus Linnaeus, 1758) di Perairan Kepulauan Aru. Jurnal Penelitian Perikanan Indonesia, 1(1), 51. https://doi.org/10.15578/jppi.1.1.2018.51-60
KKP. (2016). Rencana Pengelolaan Perikanan Rajungan di WPP NRI. 53
Kurnia, R., Boer, M., & Zairion. (2014). Biologi Populasi Rajungan (Portunus pelagicus) Dan Karakteristik Lingkungan Habitat Esensialnya Sebagai Upaya Awal Perlindungan Di Lampung Timur. Jurnal Ilmu Pertanian Indonesia, 19(1), 22–28.
Kurniasih, A., Irnawati, R., & Susanto, A. (2016). Efektifitas Celah Pelolosan Pada Bubu Lipat Terhadap Hasil Tangkapan Rajungan di Teluk Banten. Jurnal Perikanan Dan Kelautan, 6(2), 95–103. https://doi.org/http://dx.doi.org/10.33512/jpk.v6i2.1103
Mahiswara, Hufiadi, Baihaqi, & Budiarti, T. W. (2018). Effect of Different Mesh Size To the Catches of Collapsible Pot for Blue Swimming Crab (BSC) in Northern Waters of Lamongan , East Jawa. Jurnal Penelitian Perikanan Indonesia, 24(September), 175–185.
Martin, J. W., & George E. Davis. (2003). An Updated Classification of the Recent Crustacea. In Journal of Crustacean Biology (Vol. 23). https://doi.org/10.1651/0278-0372(2003)023[0495:br]2.0.co;2
Mochtar, M. Z. (2020). Rencana Pengaturan Kuota Penangkapan bagi Pengelolaan Rajungan Berkelanjutan. Direktur Jenderal Perikanan Tangkap, 14.
Nurdin, M. S., Haser, T. F., Azmi, F., & Hasanah, N. (2019). Penetapan Strategi Pengelolaan Penangkapan Berdasarkan Studi Distribusi Spasial dan Temporal Ukuran Rajungan Betina yang Mengerami Telur. Jurnal Ilmiah Samudra Akuatika, 3(2), 14–20.
Panggabean, A. S., Pane, A. R. P., & Hasanah, A. (2018). Dinamika Populasi dan Tingkat Pemanfaatan rajungan (Portunus pelagicus Linnaeus,1758) Di Perairan Teluk Jakarta. Jurnal Penelitian Perikanan Indonesia, 1(1), 73. https://doi.org/10.15578/jppi.1.1.2018.73-85
Prasetyo, G. D., Fitri, A. D. P., & Yulianto, T. (2014). Analisis Daerah Penangkapan Rajungan (Portunus pelagicus) Berdasarkan Perbedaan Kedalaman Perairan dengan Jaring Arad (Mini Trawl) di Perairan Demak. Fisheries Resources Utilization Management and Technology, 3(3), 257–266.
Prince, J., Creech, S., Madduppa, H., & Hordyk, A. (2020). Length based assessment of spawning potential ratio in data-poor fisheries for blue swimming crab (Portunus spp.) in Sri Lanka and Indonesia: Implications for sustainable management. Regional Studies in Marine Science, 36, 101309. https://doi.org/10.1016/j.rsma.2020.101309
Rahman, M. A., Iranawati, F., & Sambah, A. B. (2021). Design and Effect of Escape Vent in a Trap on the Catch of Blue Swimming Crab (Portunus pelagicus): A Preliminary Study. Research Journal of Life Science, 8(1), 7–14. https://doi.org/10.21776/ub.rjls.2021.008.01.2
Setyawan, H. A., & Fitri, A. D. P. (2018). Pendugaan Stok Sumberdaya Rajungan di Perairan Tegal Jawa Tengah. Jurnal Perikanan Tangkap 2, 3(1), 37–44.
Sumiono, B. (1997). Fishing Activities Relation to Commercial and Small-Scale Fisheries in Indonesia. Proceeding of the Regional Workshop on Responsible Fishing. Bangkok, Thailand, 240.
Susanto, A., & Irnawati, R. (2012). Application of Collapsible Trap of Mud Crab with Escape Gap in Laboratory Scale ). Jurnal Perikanan Dan Kelautan, 2(January 2015), 9.
Susanto, A., & Irnawati, R. (2013). Penggunaan Bentuk dan Posisi Celah pelolosan pada Bubu Lipat Kepiting Bakau. Marine Fisheries, 4(2), 109–114.
Susanto, A., & Irnawati, R. (2016). Shape and Position Escape Gap Application of Collapsible Mud Crab Trap. Marine Fisheries : Journal of Marine Fisheries Technology and Management, 4(2), 109. https://doi.org/10.29244/jmf.4.2.109-114
Tallo, I., Purbayanto, A., Martasuganda, S., & Puspito, G. (2014). Influence Of Escaping Gap Modification To The Collapsible Pot Selectivity Within Mangrove Crabs (Scylla Spp.). Jurnal Penelitian Perikanan Indonesia, 20(3), 183–190.
Ummaiyah, C., Fitri, A. D. P., & Jayanto, B. B. (2017). Analisis Keramahan Lingkungan Bubu Rajungan Modifikasi Celah Pelolosan di Perairan Kabupaten Rembang. Jurnal Perikanan Tangkap, 1(3).
Wagiyo, K., Tirtadanu, T., & Ernawati, T. (2019). Perikanan dan Dinamika Populasi Rajungan (Portunus pelagicus Linnaeus, 1758) di Teluk Jakarta. Jurnal Penelitian Perikanan Indonesia, 25(2), 79. https://doi.org/10.15578/jppi.25.2.2019.79-92
Webley, J. A. C., Connolly, R. M., & Young, R. A. (2009). Habitat selectivity of megalopae and juvenile mud crabs (Scylla serrata): Implications for recruitment mechanism. Marine Biology, 156(5), 891–899. https://doi.org/10.1007/s00227-009-1134-0
Zhang, J., Pei, Z., He, P., & Shi, J. (2021). Effect of escape vents on retention and size selectivity of crab pots for swimming crab Portunus trituberculatus in the East China Sea. Aquaculture and Fisheries, 6(4), 340–347. https://doi.org/10.1016/j.aaf.2020.04.008
Zhang, J., Shi, X., He, P., & Shi, J. (2022). Effectiveness of escape vent shape in crab pots for releasing swimming crab Portunus trituberculatus in the East China sea. Aquaculture and Fisheries, (December). https://doi.org/10.1016/j.aaf.2021.12.007
DOI: http://dx.doi.org/10.15578/jppi.27.3.2021.145-155
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