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http://dx.doi.org/10.5657/KFAS.2017.0421

Distribution and Biomass Using Acoustic Method of the Squid Watasenia scintillans Near Dok-do, East Sea of Korea  

Lee, Hyungbeen (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Yoon, Sang Chul (Dokdo Fisheries Research Center, National Institute of Fisheries Science)
Lim, Yang Jae (Fisheries Resources Research Center, National Institute of Fisheries Science)
Kim, Jung Nyun (Fisheries Resources Research Center, National Institute of Fisheries Science)
Kim, Maeng Jin (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Choi, Kwang Ho (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.50, no.4, 2017 , pp. 421-428 More about this Journal
Abstract
The spatial distribution and abundance of fish species was estimate near Dok-do, East Sea of Korea by conducting midwater trawl survey with hydroacoustic method. Acoustic and midwater trawl data were collected onboard the R/V Tamgu 21 during 7-8 March 2016. Acoustic data were collected at the frequencies of 38 and 120 kHz and converted to nautical area scattering strength ($m^2/nmile^2$). Species are distributed mainly over an extent of 30-55 m, generally around southwest of Dok-do; the squid Watasenia scintillans was the dominant species found. The length-weight function and target strength of squid and other fishes were used to estimate the W. scintillans stock at 2499.1 tons and other fish at 43.8 tons during the winter season. The hydroacoustic method offers an approach for the determination of the biomass and vertical and spatial distributions of species aggregating near Dok-do, East Sea of Korea.
Keywords
Watasenia scintillans; Hydroacoustic survey; Mid-water trawl survey; Dok-do; Stock assessment;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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