Abstract
The goal of this study was to estimate the target strength (TS) of the sandfish Arctoscopus japonicus using in-situ and ex-situ methods with an echosounder. For the in-situ TS measurement, the survey was conducted by taking hydroacoustic measurements at 38 and 120 kHz and using a coastal gill net, in Goseong, in the northeastern sea of Korea in early December 2009. Ex-situ measurement of TS used live specimens and the tethering method, and was conducted at 120 kHz. The distribution of fork length (FL) was bimodal: 14.6–19.8 cm (n = 241 individuals, mean = 17.0 cm) for males and 16.3–24.5 cm (n = 105 individuals, mean = 19.6 cm) for females. The in-situ TS ranged from −79.8 to −59.1 dB (mean = −74.3 dB for males and −64.1 dB for females) at 38 kHz and −79.9 to −56.2 dB (mean = −74.3 dB for males and −64.1 dB for females) at 120 kHz. The mean TS of females was approximately 10 dB higher than that of males at each dominant frequency. The female ex-situ TS values ranged from 68.5 to −54.6 dB, and those of males was from −67.7 to −59.3 dB. The mean TS value for females was 2.9 dB higher than that of males. These results may be used in echo-integration surveys of sandfish to estimate their abundance and seasonal distribution.
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Edwards JI, Armstrong F, Magurran AE, Pitcher TJ (1984) Herring, mackerel and sprat target strength experiments with behavioural observations. International Council for the Exploration of the Sea, ICES CM 1984/B:34, 21 p
Foote KG (1980) Importance of the swimbladder in acoustic scattering by fish: a comparison of gadoid and mackerel target strengths. J Acoust Soc Am 67:2084
Horne JK (2003) The influence of ontogeny, physiology, and behaviour on the target strength of walleye pollock (Theragra chalcogramma). ICES J Mar Sci 60:1063–1074
Image J (2009) Open source software, developed by W.S. Rasband, Research Services Branch, National Institute of Mental Health. Bethesda, Maryland
Kloser RJ, Horne JK (2003) Characterizing uncertainty in targetstrength measurements of a deepwater fish: orange roughy (Hoplostethus atlanticus). ICES J Mar Sci 60:516–523
Kubilius R, Ona E (2012) Target strength and tilt-angle distribution of the lesser sandeel (Ammodytes marinus). ICES J Mar Sci 69:1099–1107
Lee HW, Kim JH, Kang YJ (2006) Sexual maturation and spawning in the sandfish Arctoscopus japonicus in the East Sea of Korea. J Korean Fish Soc 39:349–356
Lee SI, Yang JH, Yoon SC, Chun YY, Kim JB, Cha HK, Choi YM (2009) Biomass estimation of sailfin sandfish, Arctoscopus japonicus, in Korean waters. Kor J Fish Aquat Sci 42:487–493
McClatchie S, Macaulay G, Coombs RF, Grimes P, Hart A (1999) Target strength of an oily deep-water fish, orange roughy (Hoplostethus atlanticus) I. Experiments. J Acoust Soc Am 106:131–142
Mukai T, Iida K (1996) Depth dependence of target strength of live kokanee salmon in accordance with Boyle’s law. ICES J Mar Sci 53:245–248
Nakken O, Olsen K (1977) Target strength measurements of fish. Rapp P-V Riun Cons Int Explor Mer 170:52–69
Safruddin, Kawauchi Y, Ito Y, Minami K, Itaya K, Maeda K, Matsukura R, Abe K, Yasuma H, Miyashita K (2013) Tilt angle and theoretical target strength of the japanese sandeel, Ammodytes personatus, captured on the Northern Coast of Hokkaido. J Marine Acoust Soc Jpn 40:329–338
Saito I (2004) Development of fishery resources assessment technology using a scientific echosounder. In: 2002 Annual report of Fisheries Promotion Center, Akita Prefecture Public Relations Division. Akita Prefectural Fisheries Promotion Center, Akita, pp 95–101
Seseo K (2005) Development survey of fishery resources assessment technology using a scientific echosounder. In: 2003 Annual report of Fisheries Promotion Center, Akita Prefecture Public Relations Division. Akita Prefectural Fisheries Promotion Center, Akita, pp 111–117
Yang JH, Lee SI, Cha HK, Yoon SC, Chang DS, Chun YY (2008) Age and growth of the sandfish, Arctoscopus japonicus in the East Sea of Korea. J Kor Soc Fish Tech 44:312–322
Yang JH, Lee SI, Park KY, Yoon SC, Kim JB, Chun YY, Kim SW, Lee JB (2012) Migration and distribution changes of the Sandfish, Arctoscopus japonicus in the East Sea. J Kor Soc Fish Tech 48:401–414
Yasuma H, Takao Y, Sawada K, Miyashita K, Aoki I (2006) Target strength of the lanternfish, Stenobrachius leucopsarus (family Myctophidae), a fish without an airbladder, measured in the Bering Sea. ICES J Mar Sci 63:683–692
Yasuma H, Sawada K, Miyashita K, Aoki I (2008) Swimbladder morphology and target strength of myctophid fish of the northwestern Pacific. J Marine Acoust Soc Jpn 35:17–28
Yasuma H, Nakagawa R, Yamakawa T, Miyashita K, Aoki I (2009) Density and sound-speed contrasts, and target strength of Japanese sandeel Ammodytes personatus. Fisheries Sci 75:545–552
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Yoon, EA., Lee, K., Oh, W. et al. Target-strength Measurements of Sandfish Arctoscopus japonicus. Ocean Sci. J. 53, 73–79 (2018). https://doi.org/10.1007/s12601-017-0057-9
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DOI: https://doi.org/10.1007/s12601-017-0057-9