Institutional Repository of Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
| Long-term variations in body length and age at maturity of the small yellow croaker (Larimichthys polyactis Bleeker, 1877) in the Bohai Sea and the Yellow Sea, China | |
| Li, Zhonglu1,2,4; Shan, Xiujuan1,3; Jin, Xianshi1,3; Dai, Fangqun1,3 | |
| 2011-06-01 | |
| 发表期刊 | FISHERIES RESEARCH
 |
| ISSN | 0165-7836 |
| 卷号 | 110期号:1页码:67-74 |
| 文章类型 | Article |
| 摘要 | This study focused on changes in the maturation schedules, as depicted in maturity ogives, of female small yellow croaker (Larimichthys polyactis) in the Bohai Sea and the Yellow Sea during the 1960-2010 spawning seasons. The two stocks studied were the northern Yellow Sea-Bohai Sea stock (the NYBS, n = 1283) and the southern Yellow Sea stock (the SYS, n=2024). Body length (L(50)) and age at median sexual maturity (A(50)) were estimated by an arcsin-square-root (ASR) transformative logistic model and an inverse von Bertalanffy growth function, respectively. The results show that L(50) decreased from 152.8 mm to 105.3 mm between 1960 and 2003-2005 in the NYBS and from 184.4 mm to 110.1 mm between 1960 and 2010 in the SYS. Over the same period, A(50) decreased from approximately 1.5 years in the NYBS and 2.4 years in the SYS to about 1 year in both stocks. Significant intrastock changes (P < 0.01) in length-maturation curves were found in both stocks over long time periods (>= 4 years); however, there were no significant changes (P > 0.05) over short time intervals (<4 years). Significant interstock changes (P < 0.01) were observed in length-maturation curves in corresponding sampling years. Significant positive correlations were found between the instantaneous rate of maturation (delta) and the growth potential index (omega) in the NYBS and between L(50) and asymptotic body length (L(infinity)) in the SYS. Significant negative correlations were found between L(50) and the sea surface temperature (SST) daily rise rate in the NYBS and between delta and the mean monthly SST in the SYS. These correlations suggest that declines in length and age at maturation primarily reflect changes in growth associated with overfishing and rising SST. Additionally, a fisheries-induced evolutionary response has contributed to changes in maturation schedules in both stocks. The principal pressures are the stress of continuously higher fishing intensity and an increasing proportion of yearling fish in the catches over time. (C) 2011 Published by Elsevier B.V.; This study focused on changes in the maturation schedules, as depicted in maturity ogives, of female small yellow croaker (Larimichthys polyactis) in the Bohai Sea and the Yellow Sea during the 1960-2010 spawning seasons. The two stocks studied were the northern Yellow Sea-Bohai Sea stock (the NYBS, n = 1283) and the southern Yellow Sea stock (the SYS, n=2024). Body length (L(50)) and age at median sexual maturity (A(50)) were estimated by an arcsin-square-root (ASR) transformative logistic model and an inverse von Bertalanffy growth function, respectively. The results show that L(50) decreased from 152.8 mm to 105.3 mm between 1960 and 2003-2005 in the NYBS and from 184.4 mm to 110.1 mm between 1960 and 2010 in the SYS. Over the same period, A(50) decreased from approximately 1.5 years in the NYBS and 2.4 years in the SYS to about 1 year in both stocks. Significant intrastock changes (P < 0.01) in length-maturation curves were found in both stocks over long time periods (>= 4 years); however, there were no significant changes (P > 0.05) over short time intervals (<4 years). Significant interstock changes (P < 0.01) were observed in length-maturation curves in corresponding sampling years. Significant positive correlations were found between the instantaneous rate of maturation (delta) and the growth potential index (omega) in the NYBS and between L(50) and asymptotic body length (L(infinity)) in the SYS. Significant negative correlations were found between L(50) and the sea surface temperature (SST) daily rise rate in the NYBS and between delta and the mean monthly SST in the SYS. These correlations suggest that declines in length and age at maturation primarily reflect changes in growth associated with overfishing and rising SST. Additionally, a fisheries-induced evolutionary response has contributed to changes in maturation schedules in both stocks. The principal pressures are the stress of continuously higher fishing intensity and an increasing proportion of yearling fish in the catches over time. (C) 2011 Published by Elsevier B.V. |
| 关键词 | Small Yellow Croaker Larimichthys Polyactis Maturity Curves Maturation Overfishing Sea Surface Temperature |
| 学科领域 | Fisheries |
| DOI | 10.1016/j.fishres.2011.03.013 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291838800008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11893 |
| 专题 | 实验海洋生物学重点实验室 |
| 作者单位 | 1.CAFS, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Shandong Prov Key Lab Fishery Resources & Ecol En, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Li, Zhonglu,Shan, Xiujuan,Jin, Xianshi,et al. Long-term variations in body length and age at maturity of the small yellow croaker (Larimichthys polyactis Bleeker, 1877) in the Bohai Sea and the Yellow Sea, China[J]. FISHERIES RESEARCH,2011,110(1):67-74. |
| APA | Li, Zhonglu,Shan, Xiujuan,Jin, Xianshi,&Dai, Fangqun.(2011).Long-term variations in body length and age at maturity of the small yellow croaker (Larimichthys polyactis Bleeker, 1877) in the Bohai Sea and the Yellow Sea, China.FISHERIES RESEARCH,110(1),67-74. |
| MLA | Li, Zhonglu,et al."Long-term variations in body length and age at maturity of the small yellow croaker (Larimichthys polyactis Bleeker, 1877) in the Bohai Sea and the Yellow Sea, China".FISHERIES RESEARCH 110.1(2011):67-74. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Long-term variations（765KB） | 限制开放 | -- | 浏览 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论