Fisheries and Aquatic Sciences

한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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The Frequency and Length Dependence of the Target Strength of the Largehead Hairtail (Trichiurus lepturus) in Korean Waters

  • HwangBo, Young (Fisheries Engineering Division, Fisheries Resources & Environment Department National Fisheries Research & Development Institute) ;
  • Lee, Dae-Jae (Department of Marine Production System Engineering, Pukyong National University) ;
  • Lee, Yoo-Won (Fisheries Engineering Division, Fisheries Resources & Environment Department National Fisheries Research & Development Institute) ;
  • Lee, Kyoung-Hoon (Fisheries Engineering Division, Fisheries Resources & Environment Department National Fisheries Research & Development Institute)
  • 발행 : 2009.06.30
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초록

The largehead hairtail (Trichiurus lepturus) is one of the most common fisheries stocks in the East China Sea and the Yellow Sea. The species is caught using a variety of fishing tools, such as a stow net or a long line, as well as jigging and trawling. Scientific investigations have been conducted throughout the world to enable evidence-based estimations for the management and protection of the main fisheries biomass. For example, inshore and offshore hydro acoustic surveys are performed annually using bottom- and mid-water trawls around the Korean Peninsula. However, to date, no acoustic survey has been conducted to estimate fish size distribution, which is necessary to construct a data bank of target strength (TS) relative to fish species, length (L), and frequency. This study describes the frequency and length dependence of TS among fishes in Korean waters for the purpose of constructing such a TS data bank. TS measurements of the largehead hairtail were carried out in a water tank (L 5 m$\times$width 6 m$\times$ height 5 m) at frequencies of 50, 75, 120, and 200 kHz, using a tethering method. The average TS patterns were measured as a function of tilt angle, ranging from $-45^{\circ}$ (head down) to $+45^{\circ}$ (head up) every $0.2^{\circ}$. The length conversion constant ($b_{20}$) was estimated under the assumption that TS is proportional to the square of the length. In addition, in situ TS measurements on live largehead hairtails were performed using a split beam echo sounder.

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참고문헌

  1. Dahl, P.H. and O.A. Mathisen. 1983. Measurement offish target strεngth and associated directivity at high frcquencies. J. Acoust. Soc. Am., 73, 1205-121 https://doi.org/10.1121/1.389266
  2. Foote, K.G. 1980a. Averaging of fish target strength functions. J. Acoust. Soc. Am., 67, 504-515 https://doi.org/10.1121/1.383915
  3. Foote, K.G. 1980b. lmportancc of the swimbladdcr in acoustic scattering by fish: A comparison of gadoid and mackerel target strengths. J. Acoust. Soc. Am., 67, 2084-2089 https://doi.org/10.1121/1.384452
  4. Foote, K.G., A. Aglen and O. Nakken. 1986. Measurement of fish target strength with split beam echo sounder. J Acoust. Soc. Am., 80, 612-621 https://doi.org/10.1121/1.394056
  5. Foote, K.G. and D.I. Francis. 2002. Comparing Kirchhoffapproximation and boundary-element models for computing gadoid target strengths. J. Acoust. Soc. Am., 111, 1644-1654 https://doi.org/10.1121/1.1458939
  6. Gauthier, S. and G.A. Rose. 2001. Target strength of encaged Atlantic redfish (Sebastes spp.). ICES J. Mar. Sci., 58, 562-568 https://doi.org/10.1006/jmsc.2001.1066
  7. Kawamura, G. and S. Ohashi. 1988. The habit of cutlassfish as infcrred from the retina. Nippon Suisan Gakkaishi, 15, 889
  8. Lee, D.J. 1999. Instrument Engineering for Fishing (theory and practice), Tae-Hwa Press., 180-207
  9. Lee, D.J. 2005. Fish length dependence of acoustic target strength for 12 dominant fish species caught in the Korean waters at 75 kHz. J. Kor. Soc. Fish. Tech., 41, 296-305 https://doi.org/10.3796/KSFT.2005.41.4.296
  10. Lee, D.J. and H.I. Shin. 2005. Construction of a Data Bank for Acoustic Target Strength with Fish Species, Length and Acoustic Frequency for Measuring Fish Size Distribution. J. Kor. Fish. Soc., 38, 265-275
  11. Love, R.H. 1971. Measurements of fish target strength: a review. Fish. Bull., 69, 703-715
  12. Mukai, T., N. Sano, K. Iida and S. Sakai. 1993. Relation between dorsal aspect target strength of fish caught in the East China Sca and their swimbladder. Nippon Suisan Gakkaishi, 60, 215-222
  13. Mukai, T., N. Sano, K. Iida and S. Sakai. 1993. Studies on dorsal aspect target strength of ten species of fish collected in the East China Sea. Nippon Suisan Gakkaishi, 59, 1515-1525 https://doi.org/10.2331/suisan.59.1515
  14. NFRDI. 2006. Assessment of fisheries resources in Korean waters, 254
  15. Ona, E. 1987. Adjustment of thc avcragc target strength of hirtail (Trichirus haumela).Internal note, Yellow Sea Fisheries Research Institutc, Qingdao, 6
  16. Zhao, X. 2006. Jn situ target-strength measurεment of young hairtail (Trichiurus haumela) in the Yellow sea. ICES Journal of Marine Science, 63, 46-51 https://doi.org/10.1016/j.icesjms.2005.07.010

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