The Performance of the New Fishing Gears of the Anchovy Boat Seine Fishery Using a Hydroacoustic Method
The anchovy boat seine fishery is conducted only in South Korea and Japan. This fishery has the largest fishing gear among towing net fisheries in the world. Hence, the expenses of manufacturing and repairing the fishing gear become formidable, and handling the huge fishing gear involves significant labor force and risk. Our research team has developed a small and a large improved fishing gears of the anchovy boat seine fishery. The performance of two improved fishing gears compared to the existent fishing gear was investigated using a hydroacoustic method. In particular, net shapes of the two improved gears and existent one were examined. As a result, it had a tendency that the height of the net mouth increased as the distance between two net vessels broadened. Between the small and large improved fishing gears, the height of the net mouth was not much different. The morphological characteristics of fish schools among two improved fishing gears and the existent one were precisely described. In consideration with the net shape, noise, and the number of escaped anchovy schools, the large improved fishing gear had the best performance. In addition, the water temperature and salinity at 10 ~ 20 m where anchovy schools were mainly distributed was approximately 16 °C and 33.3 psu, respectively. These results can contribute the efficiency and safety of the anchovy boat seine fishing operation.
KeywordsAnchovy boat seine fishery Improved net Anchovy Echosounder
This research was a part of the project titled “Next Generation Korea-model Fishing Vessel Development & Test-bed Application” of the Korea Institute of marine Science & Technology Promotion funded by the Ministry of Oceans and Fisheries, Korea (20170255). Also, this work was supported under the framework of international cooperation program managed by the National Research Foundation of Korea (2017K2A9A2A06015027, FY2017).
- Bertrand A, Gerlotto F, Bertrand S, Gutiérrez M, Alza L, Chipollini A, Chipollini A, Díaz E, Espinoza P, Ledesma J, Quesquén R, Peraltilla S, Chavez F (2008) Schooling behaviour and environmental forcing in relation to anchoveta distribution: an analysis across multiple spatial scales. Prog Oceanogr 79(2):264–277CrossRefGoogle Scholar
- Echoview (2017) Echoview 8.0.24 help file. [http://support.echoview.com/WebHelp/Echoview.htm]
- Foote KG, Knudsen HP, Vestnes G (1987) Calibration of acoustic instruments for fish density estimation: a practical guide. ICES Coop Res Rep 144:72Google Scholar
- ICES (2014) Report of the working group on southern horse mackerel, anchovy and sardine (WGHANSA). ICES CM 2014/ACOM: 16. p 532Google Scholar
- JFA (2013) Japanese fisheries agency. Fishery and resource management of anchovy. The 18th pacific wide area fisheries adjustment committee material (http://www.jfa.maff.go.jp/j/suisin/s_kouiki/taiheiyo/pdf/t18-3-1.pdf)
- Kang M, Yoon GD, Choi YM, Kim JK (1996) Hydroacoustic investigations on the distribution characteristics of the anchovy at the south region of East Sea. Bull Kor Soc Fish Tech 32(1):16–23 (in Korean with English abstract)Google Scholar
- Kim ZG, Choi YM, Hwang KS, Yoon GD (1998) Study on the acoustic behavior pattern of fish school and species identification: 1. Shoal behavior pattern of anchovy (Engraulis japonicus) in Korean waters and species identification test. J Kor Soc Fish Tech 34(1):52–61 (in Korean with English abstract)Google Scholar
- Kim YH, Jang CS, An YS, Kim HS (2001) Improving of the fishing gear and development of the automatic operation system in the anchovy boat seine - II analysis of escaping behaviour of anchovy in relation to underwater light and towing flow velocity. J Kor Soc Fish Technol 37(2):78–84 (in Korean with English abstract)Google Scholar
- Lee CI, Jang LH, Park SE (2009) Influence of water temperature during the main spawning period on anchovy catch. Kor J Fish Aquat Sci 42(3):297–301 (in Korean with English abstract)Google Scholar
- Murase H, Ichihara M, Yasuma H, Watanabe H, Yonezaki S, Nagashima H, Kawahara S, Miyashita M (2009) Acoustic characterization of biological backscatterings in the Kuroshio-Oyashio inter-frontal zone and subarctic waters of the western North Pacific in spring. Fish Oceanogr 18(6):386–401CrossRefGoogle Scholar
- Yun SD, Nam JO (2016) Impact analysis for changes in oil cost of anchovy boat seine fishery in South Korea. Environ Resour Econ 25(4):517–543 (in Korean with English abstract)Google Scholar