| SHAN Xiujuan,LI Xiansen,YANG Tao,SHARIFUZZAMAN S M,ZHANG Guozheng,JIN Xianshi,DAI Fangqun. 2017. Biological responses of small yellow croaker (Larimichthys polyactis) to multiple stressors:a case study in the Yellow Sea, China. Acta Oceanologica Sinica, 36(10):39－47 |
| Biological responses of small yellow croaker (Larimichthys polyactis) to multiple stressors:a case study in the Yellow Sea, China |
| 黄海小黄鱼生物学特征对多重压力的响应 |
| Received:September 05, 2016 |
| DOI：10.1007/s13131-017-1091-2 |
| Key words:small yellow croaker Larimichthys polyactis biological characteristics multiple stressors responses temporal changes the Yellow Sea |
| 中文关键词: 小黄鱼 生物学特征 多重压力 响应 时间序列变化 黄海 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | SHAN Xiujuan | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | LI Xiansen | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | lixs@ysfri.ac.cn | | YANG Tao | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | SHARIFUZZAMAN S M | Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong 4331, Bangladesh | | | ZHANG Guozheng | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | JIN Xianshi | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | DAI Fangqun | Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | |
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| Abstract: |
| Temporal changes in biological characteristics of small yellow croaker Larimichthys polyactis in the Yellow Sea were examined for the period of 1960-2008. The body size and age of small yellow croaker decreased substantially, in particular, average length of fish in 2008 was reduced by~85% than those occurring in 1985, and at that time~93% of the total catch was dominated by one-year-old individuals. Correspondingly, growth parameters also varied significantly over the years, i.e., k (growth coefficient) and t0 (zero-length age) gradually increased from 0.26 and -0.58 year in 1960 to 0.56 and -0.25 year in 2008, respectively. Although, L∞ (body length) sharply decreased from 34.21 cm in 1960 to 24.06 cm in 2008, and tr (inflexion age) decreased from 3.78 year in 1960 to 1.61 year in 2008. There was a great increase both in natural mortality coefficient and fishing mortality coefficient. However, according to the gray correlation analysis, changes in the biological characteristics of small yellow croaker were induced by different stressors ranked as:fishing vessel power>feeding grade>sea surface temperature. This study suggests that the active fishery management measures for biological characters of fish populations should be considered. |
| 中文摘要: |
| 基于黄海渔业资源调查数据，结合历史资料和已发表文献，研究了1960到2008年小黄鱼生物学特征的适应性变化。结果显示：从1960年到2008年，小黄鱼的体长和年龄持续降低，特别是2008年，小黄鱼平均体长与1985年相比，降低了85%，并且当年小黄鱼渔获量当年生群体占了93%。同时，小黄鱼的生长参数也发生了明显的变化，如k（生长系数）和t0（理论初始年龄）逐渐增加，其中k从1960年的0.26增加至2008年的0.56，t0从1960年的-0.58增加至2008年的-0.25。小黄鱼渐近体长和体重生长拐点，从1960年的34.21 cm和3.78年降至2008年的24.06 cm和1.61年，但是小黄鱼在自然死亡率和捕捞死亡率都迅速增加。通过灰色关联分析发现，不同的因子对小黄鱼生物学特征变化的影响程度不同，其中渔船功率影响最大，海表面温度影响最小。因此，在未来渔业资源的适应性管理中应该考虑渔业种群生物学特征的变化. |
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