Natural mortality estimation and rational exploitation of purpleback flying squid Sthenoteuthis oualaniensis in the southern South China Sea
文献类型: 外文期刊
第一作者: Wang Xuehui
作者: Wang Xuehui;Qiu Yongsong;Zhang Peng;Du Feiyan
作者机构:
关键词: purpleback flying squid;Sthenoteuthis oualaniensis;mortality;dynamic pool model;fishery;South China Sea
期刊名称:CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY ( 影响因子:1.068; 五年影响因子:0.983 )
ISSN: 0254-4059
年卷期: 2017 年 35 卷 4 期
页码:
收录情况: SCI
摘要: Based on the biological data of purpleback flying squid (Sthenoteuthis oualaniensis) collected by light falling-net in the southern South China Sea (SCS) during September to October 2012 and March to April 2013, growth and mortality of 'Medium' and 'Dwarf' forms of squid are derived using the Powell-Wetherall, ELEFAN methods and length-converted catch curves (FiSAT package). Given a lack of commercial exploitation, we assume total mortality to be due entirely to natural mortality. We estimate these squid have fast growth, with growth coefficients (k) ranging from 1.42 to 2.39, and high natural mortality (M), with estimates ranging from 1.61 to 2.92. To sustainably exploit these squid stocks, yield per recruitment based on growth and natural mortality was determined using the Beverton-Holt dynamic pool model. We demonstrate squid stocks could sustain high fishing mortality and low ages at first capture, with an optimal fishing mortality > 3.0, with the optimal age at first capture increased to 0.4-0.6 years when fishing mortality approached optimal levels. On the basis of our analyses and estimates of stock biomass, we believe considerable potential exists to expand the squid fishery into the open SCS, relieving fishing pressure on coastal waters.
分类号:
- 相关文献
作者其他论文 更多>>
-
Correlation analysis of stem hardness traits with fiber and yield-related traits in core collections of Gossypium hirsutum
作者:Raza, Irum;Hu Daowu;Ahmad, Adeel;Li Hongge;He Shoupu;Nazir, Mian Faisal;Wang Xiaoyang;Jia Yinhua;Pan Zhaoe;Zhang Peng;Yasir, Muhammad;Iqbal, Muhammad Shahid;Geng Xiaoli;Wang Liru;Pang Baoyin;Du Xiongming;Du Xiongming
关键词:Bending; Compression; Acupuncture; Principle component analysis; Stem hardness
-
Plant regeneration via protoplast electrofusion in cassava
作者:Wen Feng;Su Wen-pan;Zheng Hua;Yu Ben-chi;Wen Feng;Guo Wen-wu;Ma Zeng-feng;Zhang Peng
关键词:tissue culture; chromosome counting; DNA loss; ploidy analysis
-
Forms of Phosphorus in Several Zonal Soils of China
作者:Zhang Peng;Li Cui-lan;Sun Yuan-hong;Zhang Jin-jing;Gao Qiang;Xie Xiu-hong;Wang Li-chun
关键词:Phosphorus form; Solution P-31 NMR; Chemical fractionation; Zonal soil
-
Taxonomic notes on Anthomedusae (Cnidaria: Hydrozoa: Hydroidomedusa) from the south-central South China Sea, with a new genus and four new species
作者:Du Feiyan;Wang Lianggen;Du Feiyan;Wang Lianggen;Xu Zhenzu;Huang Jiaqi;Guo Donghui
关键词:Hydroidomedusae; Bythotiaridae; Pandeidae; Tubulariidae; new genus and species; South China Sea
-
Polyconchoecia commixtus gen. et sp nov (Ostracoda: Myodocopa: Halocyprididae) from the South China Sea
作者:Du Feiyan;Wang Lianggen;Du Feiyan;Wang Lianggen;Xiang Peng;Chen Ruixiang;Wang Yu;Wang Chunguang;Lin Mao;Lin Mao
关键词:taxonomy; Ostracoda; tribe Conchoeciini; Polyconchoecia commixtus gen; et sp; nov; South China Sea
-
Availability of Two-dimensional Bulked DNA Sampling in Uniformity Assessment of 8 Inbred Rice Lines
作者:Liu Yan-Fang;Huang Qing-Mei;Yang Xiao-Hong;Li Yan-Gang;Zhang Peng;Wang Jiang -Min;Zhang Hui;Guan Jun-Jiao;Zhang Jian-Hua
关键词:Two-dimensional bulked DNA sampling;Uniformity assessment;Inbred rice lines;SSR markers
-
Effect of an escape vent in accordion-shaped traps on the catch and size of Asian paddle crabs Charybdis japonica in an artificial reef area
作者:Zhang Peng;Li Chao;Li Wentao;Zhang Xiumei;Zhang Peng;Zhang Peng;Zhang Xiumei
关键词:Charybdis japonica; accordion-shaped trap; escape vent; selectivity; artificial reef area