A flume test of a model net with varying wing-end widths to characterize the performance of shrimp trawl in Kotabaru, Indonesia
Abstract
Shrimp trawl net is the prominent fishing gear that beneficially supports shrimp industries in Kotabaru, Indonesia. However, concurrently local fishermen have no idea how trawl works under towing condition. For this reason, a flume test of a 1/8 scale model net with varying wing-end widths was undertaken. The flow speeds of model were 48, 56, 64, 72, and 80 cm s–1. Meanwhile wing tips distance was set at 46–66% of head-rope length. At a towing speed of 64 cm s–1 (2-knot in full scale), the net height was 12 cm, the projective area of net mouth was 9.16×102 cm2, water filtering volume was 58.44×103 cm3 s–1 and total net resistance was 6.34×102 g. The ratios of net height to net circumference ranged of 0.04–0.08. The net height was 5.5% of net circumference and getting lower at higher towing speeds. The exponent value of 1.40 was smaller than the suggested value (2.0) indicating the shape of net body should be refined by inserting triangle nets between the side net and baiting. Moreover, the length of nets should be afforded to the lacing lines to increase the height of net opening by better distributing the towing forces.
References
Ahmadi (2012) An Introduction of light traps for sampling freshwater shrimp and fish in the Barito River, South Kalimantan. Journal of Fisheries and Aquatic Sciences 7(2): 173–182.
Ahmadi, Satoshi I and Sho S (2015) Trapping survey for the red frog crabs (Ranina ranina) using the baited tangle nets and pots in offshore Tanegashima, Japan. International Journal of Innovative Studies in Aquatic Biology and Fisheries 1(1): 30–37.
Alonso F (2001) Efficiency of electrofishing as a sampling method for freshwater crayfish populations in small creeks. Limnetica 20(1): 59–72.
Balash C and Sterling D (2012) Prawn trawl drag due to material properties - an investigation of the potential for drag reduction. In: The 2nd international symposium: fishing vessel energy efficiency. Vigo, Spain, May 2012.
Bayse SM, Pol MV and He P (2016) Fish and squid behaviour at the mouth of a drop-chain trawl: factors contributing to capture or escape. ICES Journal of Marine Science 73(6): 1545–1556. doi: 10.1093/icesjms/fsw007
Boutson A, Mahasawasde C, Mahasawasde S, Tunkijjanukij S and Preecha A (2007) Possibility to modify shrimp trammel net to reduce discard species. Kasetsart Journal (Natural Sciences) 41: 149–156.
BPS-Statistic of Kotabaru Regency (2015) Kotabaru regency in figure 2015. 393 pp. https://kotabarukab.bps.go.id/webbeta/website/pdf_publikasi/Kotabaru-Dalam-Angka-2015.pdf
Broadhurst MK, Balash C, Sterling DJ, Millar RB and Matsubara S (2017) Effects of knot orientation on the height and drag of a penaeid trawl. Fisheries Research 186: 48–54.
Broadhurst MK, Sterling DJ and Millar RB (2014) Configuring the mesh size, side taper and wing depth of penaeid trawls to reduce environmental impacts. Plos One 9(6): e99434.
Chin C, May R and Connell H (2000) A numerical model of a towed cable-body system. ANZIAM Journal 42(E):C362-C384. doi: 10.21914/anziamj.v42i0.603
Das BK, Singh NR, Boruah P and Kar D (2015) Fishing devices of the river Siang in Arunachal Pradesh, India. Journal of Fisheries 3(2): 251–258.
Deniz T, Harlıoglu MM and Deval MC (2010) A study on the morphometric characteristics of Astacus leptodactylus inhabiting the Thrace region of Turkey. Knowledge and Management of Aquatic Ecosystems 397: 05. doi: 10.1051/kmae/2010021
Dereli H, Aydin C, Bell M, Kebabcioglu T, Akpinar IO and Sen Y (2016) Selectivity of commercial and experimental codends for the demersal trawl fishery of the deep-water rose shrimp, Parapenaeus longirostris (Lucas, 1846), in the Aegean Sea. Crustaceana 89(4): 477–493. doi: 10.1163/15685403-00003532
Ebata K, Teraji S and Okino A (2013) Reduction of hydrodynamic force acting on bottom trawl net. In: Proceedings of the symposium on impacts of fishing on the environment ICES-FAO Working Group on Fishing Technology and Fish Behaviour. Bangkok, Thailand, 6–10 May 2013.
Fiorentini L, Sala A, Hansen K, Cosimi G and Palumbo V (2004) Comparison between model testing and full-scale trials of new trawl design for Italian bottom fisheries. Fisheries Sciences 70: 349–359. doi: 10.1111/j.1444-2906.2004.00813.x
Fuwa S, Kude S, Ebata K and Mizoguchi H (2013) A comparison of the fishing gear efficiency on the trawl with knotted and knotless net webbings. In: Proceedings of the symposium on impacts of fishing on the environment ICES-FAO Working Group on Fishing Technology and Fish Behaviour. Bangkok, Thailand, 6–10 May 2013.
Galib SM, Samad MA, Kamal MM, Haque MA and Hasan MM (2009) A study on fishing gears and methods in the Chalan Beel of north-west Bangladesh. Journal of Environmental Science & Natural Resources 2(2): 213–218.
Hannah RW, Jones SA and Hoover VJ (1996) Evaluation of fish excluder technology to reduce finfish bycatch in the pink shrimp trawl fishery. Oregon Department of Fish Wild. Information Report Series Fisheries 96-4. 46 pp.
He P and Balzano V (2012) Improving size selectivity of shrimp trawls in the Gulf of Maine with a modified dual-grid size-sorting system. North America Journal of Fisheries Management 32(6): 1113–1122.
He P, Rillahan C and Balzano V (2014) Reduced herding of flounders by floating bridles: application in Gulf of Maine Northern shrimp trawls to reduce bycatch. ICES Journal of Marine Sciences: Journal du Conseil, fsu235. doi: 10.1093/icesjms/fsu235
He P, Smith T and Bouchard C (2008) Fish behaviour and species separation for the Gulf of Maine multispecies trawls. Journal of Ocean Technology 3(2): 60–77.
Higo (1971) Fundamental studies on the fishing efficiencies of the trawling nets. Member of Faculty of Fishery, Kagoshima University 20: 1–137.
Hu FX, Matuda K and Tokai T (2001) Effects of drag coefficient of netting for dynamic similarity on model testing of trawl nets. Fisheries Science 67: 84–89. doi: 10.1046/j.1444-2906.2001.00203.x
Khaled R, Priour D and Billard JY (2012) Cable length optimization for trawl fuel consumption reduction. Ocean Engineering 58: 167–179.
Lawal-Are AO and Akinjogunla VF (2012) Penaeus notialis (pink shrimps): length-weight relationships and condition factor in Lagos Lagoon, South West, Nigeria. Science and Technology 2(3): 32–40.
Madsen N, and Hansen KE (2001) Danish experiments with a grid system tested in the North Sea shrimp fishery. Fisheries Research 52: 203–216. doi: 10.1016/S0165-7836(00)00234-4
Main J and Sangster GI (1985) The behaviour of the Norway lobster, Nephrops norvegicus, during trawling. Scottish Fisheries Research Report 24, 23.
Mangunsukarto K (1979) Comparative study on gear efficiency of three types of trawl nets. Master Thesis, Faculty of Fishery, Kagoshima University, Japan. 101 pp.
Mejia-Ortiz LM, Alvarez F, Roman R and Viccon-Pale JA (2001) Fecundity and distribution of freshwater prawns of the genus Macrobrachium in the Huitzilapan River, Veacruz, Mexico. Crustaceana 74(1): 69–77.
Miyamoto H (1968) Report to the Government of India on establishment of a fishing gear research laboratory. FAO TA 2599. 137 pp.
Muchtar H, Nishinokubi H and Nakasai K (1973) Study of the six-seam trawl - II. Bulletin Faculty of Fishery, Nagasaki University 36: 93–101.
Nomura M (1977) Shrimp trawl fishing experiment. SEAFDEC, Fishing technique, JICA publication. pp. 105–125.
Nomura M (1989) Fishing techniques (2). Regional training course in coastal fisheries development. JICA publication. pp. 52–58.
Olopade OA, Sinclair NG and Dienye H (2017) Fish catch composition of selected small scale fishing gears used in the Bonny River, Rivers State, Nigeria. Journal of Fisheries 5(1): 455–460.
Özbilgin YD, Kalecik E, Bozaoğlu AS, Eryaşar AR, Gökçe G and Özbilgin H (2013) Observation of fish behavior during demersal trawling operations in the North Eastern Mediterranean. In: Proceedings of the symposium on impacts of fishing on the environment ICES-FAO Working Group on Fishing Technology and Fish Behaviour. Bangkok, Thailand, 6–10 May 2013.
Pervez MT, Mohsin ABM, Chaki N and Galib SM (2017) Risking lives for living: a study on underwater fishing in the Padma River, Bangladesh. Journal of Fisheries 5(3): 525–530.
Pravin and Ravindran (2011) Catch efficiency of gillnets in shrimp filtration farms at Vypeen Island, Kerala, South India. Indian Journal of Fisheries 58(2): 153–157.
Puspito G, Thenu IM, Julian D and Tallo I (2015) Utilization of light-emitting diode lamp on lift net fishery. AACL Bioflux 8(2): 159–167.
Sala A and Lucchetti A (2011) Effect of mesh size and codend circumference on selectivity in the Mediterranean demersal trawl fisheries. Fisheries Research 110: 252–258. doi: 10.1016/j.fishres.2011.04.012
Shahardin ZA (1983) Model experiments on small shrimp trawls. Feasibility studies on the double rigged type over the single rigged type. Master Thesis, Faculty of Fishery, Kagoshima University, Japan. 137 pp.
Singh G and Agarwal NK (2014) Fishing methods in upper Ganga River system of Central Himalaya, India. Journal of Fisheries 2(3): 195–202.
Stebbing PD, Watson GJ, Bentley MG, Fraser D, Jennings R, Rushton SP and Sibley PJ (2004) Evaluation of the capacity of pheromones for control of invasive non-native crayfish. English Nature Research Reports, No. 578, Peterborough, UK.
Sterling D (2009) Fishing energy efficiency review for the fisheries research and development corporation. FRDC Rep. 2005/239.
Suzuki K, Takagi T, Shimizu T, Hiraishi T, Yamamoto K and Nashimoto K (2003) Validity and visualization of a numerical model used to determine dynamic configurations of fishing nets. Fisheries Science 69(4): 695–705. doi: 10.1046/j.1444-2906.2003.00676.x
Tauti M (1934) A relation between experiments on model and on full scale fishing net. Bulletin Japanese Society Science Fisheries 3: 171–177.
Tokac A, Ozbilgin H and Kaykac H (2009) Alternative codend designs to improve size selectivity for Norway lobster (Nephrops norvegicus) and rose shrimp (Parapenaeus longirostris) in the Aegean Sea. Crustaceana 82: 689–702.
Wong BY, Ong HKA and Khoo G (2015) Length-weight relationships of Acetes spp. sampled along the west coast of Peninsular Malaysia. Sains Malaysiana 44(3): 379–386.
