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
发表期刊FISHERIES RESEARCH
卷号169页码:45-51
摘要Knowledge 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.
部门归属[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
关键词Sthenoteuthis Oualaniensis Squid Fishery Acoustics Target Strength South China Sea
学科领域Fisheries
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/14927
专题热带海洋环境国家重点实验室(LTO)
通讯作者zkexin0901@126.com
推荐引用方式
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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