文章摘要
张萌萌,刘岳,解涛,陈文蕾,唐衍力.威海西霞口海洋牧场鱼礁区中许氏平鲉的生长、死亡及合理利用[J].水产学报,2019,43(9):1925~1936
威海西霞口海洋牧场鱼礁区中许氏平鲉的生长、死亡及合理利用
Growth, mortality and reasonable utilization of Sebastes schlegelii in the artificial reef area of Weihai, Shandong Province
投稿时间:2019-04-16  修订日期:2019-07-09
DOI:10.11964/jfc.20190411742
中文关键词: 许氏平鲉  资源现状  Beverton-Holt模型  生物学参考点  西霞口人工鱼礁区
英文关键词: Sebastes schlegelii  resource status  Beverton-Holt model  biological reference points  artificial reef area in Xixiakou
基金项目:山东省海洋与渔业科技创新计划(2017HYCX007)
作者单位E-mail
张萌萌 中国海洋大学水产学院, 山东 青岛 266003  
刘岳 中国海洋大学水产学院, 山东 青岛 266003  
解涛 中国海洋大学水产学院, 山东 青岛 266003  
陈文蕾 中国海洋大学水产学院, 山东 青岛 266003  
唐衍力 中国海洋大学水产学院, 山东 青岛 266003 tangyanli@ouc.edu.cn 
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中文摘要:
      人工鱼礁是我国海洋牧场的重要组成部分。许氏平鲉是我国沿海广布的经济鱼种。为比较研究许氏平鲉的资源状况,本实验根据2016—2018年西霞口海洋牧场鱼礁区的资源调查,运用ELEFANⅠ基于许氏平鲉体长频率数据、变换体长渔获曲线法、单位补充量等渔获量曲线法和生物参考点对许氏平鲉的生长、死亡和合理利用进行初步研究,运用蒙特卡罗模拟法将不确定性引入资源评估。实验表明,浅水域许氏平鲉的平均体长、平均体质量、渐近体长和渐近体质量均大于中水域,深水域最小,表明西霞口礁区浅水域许氏平鲉的生长状况最好。中水域的捕捞死亡系数和自然死亡系数均大于深水域,浅水域最小,表明西霞口礁区中水域的许氏平鲉资源死亡率最高。本实验首次将生物学参考点及不确定性分析用于不同水深礁区的资源评价,结果发现,3种不确定水平下FBRP的判断结果与无不确定性结果一致,且F0.1更适合礁区许氏平鲉的资源评估。结合Gulland理论、生物学参考点和单位补充量渔获量分析可知,礁区资源处于轻度开发状态,可以通过适当提高捕捞强度来增加渔获量。浅水域可提高到YW/R=25.60对应的开捕年龄为1.83 a;中水域可提高到YW/R=23.89对应的开捕年龄为0.93 a;深水域可提高到YW/R=16.74对应的开捕年龄为1.12 a。
英文摘要:
      The artificial reefs are an important part of the marine ranching. Sebastes schlegelii which occurs in the coastal waters of China, including Yellow Sea and East China Sea, is a delicious seafood and has great economic value. We studied the resource status of S. schlegelii in different reef areas, such as growth, mortality and utilization of resources assessment, based on the cage questionnaire data in Weihai artificial reef area, Shandong province, from 2016 to 2018, by the means of ELEFAN Ⅰ, length-converted catch curve, Yw/R curve and the biologic reference points. And uncertainty was incorporated into the estimation of the biological reference points F0.1 and Fmax by Monte Carlo simulation. The results of the first study on the resources of reef areas at different depths showed that the average body length, average weight, asymptotic body length and asymptotic weight of the S. schlegelii in shallow water areas were greater than those in the middle waters, and the deep water areas were the smallest, indicating that the artificial reefs in shallow water areas were more conducive to the protection of fishery resources. The fishing mortality coefficient and the natural mortality coefficient in the middle water area were greater than the deep water area, the shallow water area was the smallest. It is the first time to apply biological reference points F0.1, Fmax and uncertainty analysis to the resource assessment of different depths of reef area. The result showed that the judgment results of FBRP at the three uncertainty levels were consistent with the none uncertainty, but the value of Fmax was far greater than F0.1, making it more difficult to judge the amount of reef resources as overexploitation. Therefore F0.1 is more suitable for the evaluation of S. schlegelii. In combination with Gulland's theory, biological reference points and yield per recruitment, reef resources were under the mild exploitation, and fishing intensity can be appropriately enhanced to increase catch yield. Shallow waters can be increased to F=0.39, and Yw/R=25.60, corresponding fishing age is 1.83 a. The middle water area can be increased to F=0.46,Yw/R=23.89 and fishing age 0.93 a, respectively. Deep water area can be increased to F=0.42, and Yw/R=16.74 corresponding to a fishing age of 1.12 a.
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