SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Hydroacoustic studies on the commercially important squid Sthenoteuthis oualaniensis in the South China Sea
Zhang Jun; Chen Zuo-zhi; Chen Guo-bao; Zhang Peng; Qiu Yong-song; Yao Zhuang; zkexin0901@126.com
2015
Source PublicationFISHERIES RESEARCH
Volume169Pages:45-51
Subtype0165-7836
AbstractKnowledge of target strength (TS) is essential for accurate assessment of fish abundance using acoustic methods. The in situ TS (dB) of purpleback flying squid Sthenoteuthis oualaniensis in the South China Sea was measured with 70 and 120 kHz split-beam echosounders. Biological samples were collected using a light falling-net with a valid working depth of 50 m. Acoustic data sets in which S. oualaniensis contributed more than 90% of the total catch by number were selected to analyse in situ TS and determine relationships between TS and squid mantle length (ML). In situ TS increased with squid density when density was greater than a cut-off point, indicating a bias from accepting multiple targets at high squid density. At 70 kHz the TS to ML of squid was: TS70 (kHz) = 19.13 log ML - 77.84 (n = 9, R-2 = 0.8782, ML: 7.5-25 cm); at 120 kHz the TS to ML of squid was: TS120 (kHz) = 26.68 log ML - 88.00 (n = 9, R-2 = 0.8521, ML: 7.5-25 cm). This study provides new data for improving the acoustic abundance estimation of squid S. oualaniensis, and may be a useful reference for TS estimation of other squid species. (C) 2015 Elsevier B.V. All rights reserved.
Department[Zhang Jun; Chen Zuo-zhi; Chen Guo-bao; Zhang Peng; Qiu Yong-song] Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China; [Zhang Jun; Chen Guo-bao] Minist Agr, Sci Observing & Expt Stn South China Sea Fishery, Guangzhou 510300, Guangdong, Peoples R China; [Chen Zuo-zhi; Qiu Yong-song] Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China; [Yao Zhuang] Dalian Ocean Univ, Dalian 116023, Peoples R China ; LTO
KeywordSthenoteuthis Oualaniensis Squid Fishery Acoustics Target Strength South China Sea
Subject AreaFisheries
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15040
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorzkexin0901@126.com
Recommended Citation
GB/T 7714
Zhang Jun,Chen Zuo-zhi,Chen Guo-bao,et al. Hydroacoustic studies on the commercially important squid Sthenoteuthis oualaniensis in the South China Sea[J]. FISHERIES RESEARCH,2015,169:45-51.
APA Zhang Jun.,Chen Zuo-zhi.,Chen Guo-bao.,Zhang Peng.,Qiu Yong-song.,...&zkexin0901@126.com.(2015).Hydroacoustic studies on the commercially important squid Sthenoteuthis oualaniensis in the South China Sea.FISHERIES RESEARCH,169,45-51.
MLA Zhang Jun,et al."Hydroacoustic studies on the commercially important squid Sthenoteuthis oualaniensis in the South China Sea".FISHERIES RESEARCH 169(2015):45-51.
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