北部湾短尾大眼鲷群体结构及生长、死亡和性成熟参数估计

doi:10.11978/2015153

热带海洋学报 ›› 2016, Vol. 35 ›› Issue (5): 20-28.doi: 10.11978/2015153CSTR: 32234.14.2015153

北部湾短尾大眼鲷群体结构及生长、死亡和性成熟参数估计

张魁^{1, 2}, 陈作志^{1, 2}, 王跃中^{1, 2}, 孙典荣^{1, 2}, 邱永松^{1, 2}

1. 中国水产科学研究院南海水产研究所, 广东广州 510300; 2. 农业部南海渔业资源开发利用重点实验室, 广东广州 510300

收稿日期:2015-12-17 出版日期:2016-08-29 发布日期:2016-09-22
通讯作者: 陈作志。E-mail: zzchen2000@163.com
作者简介:张魁(1987—), 男, 山东省淄博市人, 助理研究员, 博士, 研究方向为海洋渔业资源评估与管理。Email: nedvedkui@163.com
基金资助:
基金项目：国家自然科学基金项目(31602157); 中央级公益性科研院所基本科研业务费专项资金(2014TS23); 农业部海洋渔业资源调查与探捕(近海)项目(2014-2018); 广东省自然科学基金项目(S2013010013752)

Population structure of Priacanthus macracanthus in the Beibu Gulf, and parameters for its growth, mortality and maturity

ZHANG Kui^{1, 2}, CHEN Zuozhi^{1, 2}, WANG Yuezhong^{1, 2}, SUN Dianrong^{1, 2}, QIU Yongsong^{1, 2}

1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; 2. Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou 510300, China

Received:2015-12-17 Online:2016-08-29 Published:2016-09-22
Contact: Corresponding author: CHEN Zuozhi. E-mail: zzchen2000@163.com
Supported by:
Foundation item: National Natural Science Foundation of China (31602157); Special Scientific Research Funds for Central Non-profit Institutes, Chinese Academy of Fishery Sciences (2014TS23); Marine Fishery Resources Investigation and Agent Funds, Ministry of Agriculture, China (2014-2018); Natural Science Foundation of Guangdong Province, China (S2013010013752)

摘要/Abstract

摘要： 根据1997—1999年与2011—2015年北部湾底拖网调查数据, 对短尾大眼鲷Priacanthus macracanthus两个时期的体长组成、性比与性腺发育、摄食以及生长、死亡和性成熟参数进行了研究。结果表明: 1)1997—1999年优势体长组为110~170mm, 2011—2015年为90~150mm, 两个时期的体长组成及均值有显著性差异(P<0.05), 1997—1999年个体明显大于2011—2015年个体。2)除秋季外, 2011—2015年短尾大眼鲷的雌雄比都明显高于1997—1999年; 雌雄比随体长变化, 1997—1999年先减少后增加, 2011—2015年则是先减少后增加再减少; 2011—2015年初次性成熟体长(L₅₀)比1997—1999年缩短了5mm。3)与1997—1999年相比, 2011—2015年的平均摄食强度明显要高, 分析认为, 可能是因为过度开发使鱼类减少, 捕食压力减小, 饵料相对充足。4)电子体长频率分析法评估的2011—2015北部湾短尾大眼鲷渐近体长(L_?)和生长参数(K)分别为291mm和0.70a^-1, 总死亡系数(Z)和自然死亡系数(F)分别为4.57和1.38, 开发率(E)为0.70, 略高于1997—1999年水平, 表明该群体仍处于过度开发状态。

关键词: 短尾大眼鲷Priacanthus macracanthus, 群体结构, 生物学参数, 北部湾

Abstract: The fisheries biology characters of Priacanthus macracanthus, including size composition, sex ratio, gonad maturity, diet, and parameters for its growth, mortality and maturity, were analyzed based on the data collected during 1997-1999 and 2011-2015. Results showed that the dominant body length groups were 110~170 mm during 1997-1999, and 90~150 mm during 2011-2015. The ratios of females to males were higher during 2011-2015 than 1997-1999, except in autumn. The ratios also varied with body length. During 1997-1999, it decreased first and then increased. During 2011-2015, it decreased first, then increased, and again decreased. The estimated first maturity lengths (L₅₀) were 175 and 170 mm for 1997-1999 and 2011-2015, respectively. The average feeding intensity was greater during 2011-2015 than during 1997-1999. It may be attributed to less food competition because of the continuous overfishing and decline of fish abundance. The estimated asymptotic length (L_?) and growth parameter (K) calculated by Electronic Length Frequency Analysis I (ELEFANⅠ) were 291 mm and 0.70 a^-1, respectively. The estimated total mortality coefficient (Z) and natural mortality coefficient (M) were 4.57 and 1.38, respectively. The exploitation rate of 0.70 indicated this stock was still over-exploited.

Key words: Priacanthus macracanthus, population structure, biological parameters, Beibu Gulf

张魁, 陈作志, 王跃中, 孙典荣, 邱永松. 北部湾短尾大眼鲷群体结构及生长、死亡和性成熟参数估计[J]. 热带海洋学报, 2016, 35(5): 20-28.

ZHANG Kui, CHEN Zuozhi, WANG Yuezhong, SUN Dianrong, QIU Yongsong. Population structure of Priacanthus macracanthus in the Beibu Gulf, and parameters for its growth, mortality and maturity[J]. Journal of Tropical Oceanography, 2016, 35(5): 20-28.

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北部湾短尾大眼鲷群体结构及生长、死亡和性成熟参数估计

Population structure of Priacanthus macracanthus in the Beibu Gulf, and parameters for its growth, mortality and maturity

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