| 海州湾3种䲗属鱼类生长参数的年际变动 |
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| 引用本文： | 陈泓宇,张崇良,宋智启,雒凡舒,宋冰玉,王琨.海州湾3种䲗属鱼类生长参数的年际变动[J].中国水产科学,2020,27(9):1104-1112. |
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| 作者姓名： | 陈泓宇 张崇良 宋智启 雒凡舒 宋冰玉 王琨 |
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| 作者单位： | 中国海洋大学水产学院, 山东 青岛 266003 |
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| 基金项目： | 国家重点研发计划项目（2018YFD0900906）. |
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| 摘 要： | 䲗属（）鱼类是海州湾地区常见的小型底栖饵料鱼类，但一直以来被渔业研究者忽视。本研究通过2011-2019年共18个航次的海州湾底拖网调查数据，分析了3种常见的䲗属鱼类——瓦氏䲗（C.richardsoni）的年际数量变化，并基于Bootstrap重抽样法，使用电子体长频率分析法（electronic length frequency analysis，ELEFAN）计算其冯·贝塔朗菲生长方程（von Bertalanffy growth function，VBGF）参数。结果表明，2011-2019年3种䲗属鱼类在海州湾地区表现出了极限体长由21.60 cm下降至13.96 cm，生长参数由19.72 cm下降至19.35 cm，生长参数由18.74 cm下降至14.91 cm，生长参数由0.45下降至0.43。3种䲗属鱼类总体上呈现数量下降与小型化趋势。本研究旨为䲗属鱼类生长特征研究提供参考资料，并为渔业资源评估提供基本参数依据。
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| 关 键 词： | 䲗属 海州湾 相对渔获量 VBGF参数 电子体长频率分析法 Bootstrap重抽样法 渔业资源评估 |
Interannual variation in the growth parameters of three Callionymus species in Haizhou Bay |
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| CHEN Hongyu,ZHANG Chongliang,SONG Zhiqi,LUO Fanshu,SONG Bingyu,WANG Kun.Interannual variation in the growth parameters of three Callionymus species in Haizhou Bay[J].Journal of Fishery Sciences of China,2020,27(9):1104-1112. |
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| Authors: | CHEN Hongyu ZHANG Chongliang SONG Zhiqi LUO Fanshu SONG Bingyu WANG Kun |
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| Institution: | College of Fisheries, Ocean University of China, Qingdao 266003, China |
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| Abstract: | Haizhou Bay is a traditional fishing ground in China. Due to overfishing and environmental pollution, large- and medium-sized economic fish resources in this area have declined. Prior research has focused on fish species with high economic value or emerging dominant prey species such as while overlooking non-dominant species such as those in the genus. This group contains numerous small benthic species commonly found in the Haizhou Bay fishing ground, which perform important ecological functions. Fishery resource conservation should be ecosystem-based, so it is necessary to investigate changes in all of the fish resources. Therefore, this study focused on three non-dominant prey species within , to investigate the growth parameters changes under environmental stress. Using data from 18 bottom trawl surveys in the Haizhou Bay from 2011 to 2019, the von Bertalanffy growth function (VBGF) was estimated via electronic length-frequency analysis (ELEFAN) with the TropFishR package in R. The number of samples was relatively small, so bootstrap resampling was employed to improve the robustness of our estimates. The results show that from 2011 to 2019, the three species experienced a population decline and miniaturization. The infinite length of decreased from 21.60 cm to 13.96 cm, while the growth parameter decreased from 19.72 cm to 19.35 cm, and the growth parameter C. richardsoni decreased from 18.74 cm to 14.91cm, and the growth parameter K decreased from 0.45 to 0.43. All three species showed a decreasing trend in infinite length or an declining trend in the growth parameter species as the r-strategists responded to the local environment stressors (e.g., overfishing and environmental pollution). However, shortened infinite body length and increased growth rates manifest one another and may be related to differences in the specific environmental stressors the three species experienced. This study provides important data on the growth and population development of and provides a reference for future assessments and fisheries restoration efforts in Haizhou Bay. |
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| Keywords: | , Haizhou Bay, relative catch, VBGF, ELEFAN, Bootstrap, fishery resources assessment |
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