Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Physical Parameter Measurement and Theoretical Target Strength Estimation of Juvenile Cod (Gadus macrocephalus)

  • Husni, Iqbal Ali (Department of Fisheries Physics, Graduate School, Pukyong National University) ;
  • Hwang, Bo-Kyu (Department of Marine Science and Production, College of Ocean Science and Technology, Kunsan National University) ;
  • Shin, Hyeon-Ok (Division of Marine Production System Management, College of Fisheries Science, Pukyong National University) ;
  • Kim, Min-Son (Department of Marine Science and Production, College of Ocean Science and Technology, Kunsan National University)
  • Received : 2015.06.08
  • Accepted : 2015.10.25
  • Published : 2015.12.30
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Abstract

The contrast (fish body to medium ratio) of density and sound speed were measured to estimate acoustic scattering from small juvenile cod (Gadus macrocephalus) with the Kirchhoff-Ray Mode backscatter model. The density contrast was measured by the density-bottle method and the sound speed contrast was estimated by the time of flight method. The results revealed that the measured density contrasts of juvenile cod varied between 1.003 and 1.029 (mean = 1.014, S.D. = 0.01). On the other hand, sound speed contrasts varied between 1.039 and 1.041 (mean = 1.041, S.D. = 0.001). The relationship between averaged target strength (TS) and total length (TL) established by the model were <$TS_{38kHz}$> = 20log(TL) - 68.8 and <$TS_{38kHz}$> = 20log(TL) - 69.4, respectively.

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References

  1. Abe K, Sadayasu K, Sawada K, Ishii K, Takao Y (2004) Precise target strength measurement and morphological observation of juvenile walleye pollock (Theragra chalcogramma). In: OCEANS '04. MTTS/IEEE, 9-12 Nov 2004
  2. Benoit-Bird KJ, Gilly WF, Au WWL, Mate B (2008) Controlled and insitu target strength of the jumbo squid Dosidicus gigas and identification of potential acoustic scattering sources. J Acoust Soc Am 123(3):1318-1328 https://doi.org/10.1121/1.2832327
  3. Chu D, Wiebe PH (2005) Measurements of sound speed and density contrasts of zooplankton in Antarctic waters. ICES J Mar Sci 62(4):818-831 https://doi.org/10.1016/j.icesjms.2004.12.020
  4. Chu D, Wiebe PH, Copley NJ, Lawson LG, Puvanendran V (2003) Material properties of North Atlantic cod eggs and early-stages larvae and their influence on acoustic scattering. ICES J Mar Sci 60(3):508-515 https://doi.org/10.1016/S1054-3139(03)00047-X
  5. Clay CS (1991) Low-resolution acoustic scattering models:fluid-filled cylinders and fish with swim-bladders. J Acoust Soc Am 89(12):2168-2179 https://doi.org/10.1121/1.400910
  6. Clay CS (1992) Composite ray-mode approximations for backscattered sound from gas-filled cylinders and swimbladders. J Acoust Soc Am 92(12):2173-2180 https://doi.org/10.1121/1.405211
  7. Clay CS, Horne JK (1994) Acoustic model of fish : the Atlantic cod (Gadus morhua). J Acoust Soc Am 96(3):1661-1668 https://doi.org/10.1121/1.410245
  8. Foote KG (1979) Fish target-strength-to-length-regressions for application in fisheries research. In: Proceedings of the ultrasonic international 19, Graz, 15-17 May 1979, pp 327-333
  9. Foote KG (1980) Averaging of fish target strength functions. J Acoust Soc Am 67(10):504-515 https://doi.org/10.1121/1.383915
  10. Foote KG (1985) Rather-high-frequency sound scattering by swimbladdered fish. J Acoust Soc Am 78(4):688-700 https://doi.org/10.1121/1.392438
  11. Foote KG (1987) Fish target strengths for use in echo integrator surveys. J Acoust Soc Am 82(5):981-987 https://doi.org/10.1121/1.395298
  12. Foote KG (1990) Speed of sound in euphausia superba. J Acoust Soc Am 87(4):1405-1408 https://doi.org/10.1121/1.399436
  13. Foote KG, Traynor JJ (1988) Comparison of walleye pollock target strength estimates determined in situ measurements and calculations based on swim bladder form. J Acoust Soc Am 83(9):9-17 https://doi.org/10.1121/1.396190
  14. Furusawa M (1988) Prolate spheroidal models for predicting general trends of fish target strength. J Acoust Soc Jpn 9(1):13-24 https://doi.org/10.1250/ast.9.13
  15. Horne JK, Walline PD, Jech JM (2000) Comparing acoustic model predictions to in situ backscatter measurements of fish with dual-chambered swimbladders. J Fish Biol 57:1105-1121 https://doi.org/10.1111/j.1095-8649.2000.tb00474.x
  16. Jech JM, Schael DM, Clay CS (1995) Application of three sound-scattering models to threadfin shad (Dorosoma petenense). J Acoust Soc Am 98(5):2262-2269 https://doi.org/10.1121/1.413340
  17. Kim MJ, An HS, Choi KH (2010) Genetic characteristics of Pacific cod populations in Korea based on microsatellite markers. Fish Sci 76(4):595-603 https://doi.org/10.1007/s12562-010-0249-z
  18. Love RH (1971) Measurements of fish target strength: a review. Fish Bull 69(4):703-715
  19. MacLennan DN (1990) Acoustical measurement of fish abundance. J Acoust Soc Am 87(1):1-15 https://doi.org/10.1121/1.399285
  20. McClatchie S, Macaulay GJ, Coombs RF, Grimes P, Hart A (1990) Experiments on the target strength of the oily deepwater fish, orange roughy (Hoplostethus atlanticus). Part I: experiments. J Acoust Soc Am 106(1):131-142 https://doi.org/10.1121/1.427042
  21. Nielsen JR, Lundgren B (1999) Hydroacoustic ex situ target strength measurements on juvenile cod (Gadus morhua L.). ICES J Mar Sci 56(5):627-739 https://doi.org/10.1006/jmsc.1999.0515
  22. Ona E (1994) Detailed in situ target strength measurements of 0-group cod. ICES CM 1994/B:30, 9 p
  23. Pruthi JS (1999) Quick freezing preservation of foods. Allied Pub Ltd, New Delhi, 622 p
  24. Rose GA, Porter DR (1996) Target-strength studies on Atlantic cod (Gadus morhua) in Newfoundland waters. ICES J Mar Sci 53(2):259-265 https://doi.org/10.1006/jmsc.1996.0032
  25. Sawada K, Ye Z, Kieser R, Furusawa M (1999) Target strength measurements and modeling of walley pollock and Pacific hake. Fish Sci 65(2):193-205 https://doi.org/10.2331/fishsci.65.193
  26. Simmonds J, MacLennan D (2005) Fisheries acoustics. Blackwell Publishing, Oxford, 456 p
  27. Stanton TK (1989) Sound scattering by cylinders of finite length III. Deformed cylinders. J Acoust Soc Am 86(3):691-705 https://doi.org/10.1121/1.398193