| Changes in the population structure of Calanus sinicus during summer–autumn in the southern Yellow Sea |
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| 引用本文： | 时永强,孙松,李超伦,张光涛,杨波,吉鹏.Changes in the population structure of Calanus sinicus during summer–autumn in the southern Yellow Sea[J].海洋学报(英文版),2019,38(8):56-63. |
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| 作者姓名： | 时永强 孙松 李超伦 张光涛 杨波 吉鹏 |
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| 作者单位： | 中国科学院海洋生态与环境科学重点实验室 中国科学院海洋研究所 青岛 266071;农业农村部海洋渔业可持续发展重点实验室 中国水产科学研究院黄海水产研究所 青岛 266071;青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室 青岛 266237,中国科学院海洋生态与环境科学重点实验室 中国科学院海洋研究所 青岛 266071;中国科学院海洋研究所胶州湾海洋生态系统国家野外科学观测研究站 青岛 266071;青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室 青岛 266237;中国科学院大学 北京 100049;中国科学院海洋大科学研究中心 青岛 266071,中国科学院海洋生态与环境科学重点实验室 中国科学院海洋研究所 青岛 266071;青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室 青岛 266237;中国科学院大学 北京 100049;中国科学院海洋大科学研究中心 青岛 266071,中国科学院海洋研究所胶州湾海洋生态系统国家野外科学观测研究站 青岛 266071;青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室 青岛 266237;中国科学院大学 北京 100049;中国科学院海洋大科学研究中心 青岛 266071,中国科学院海洋生态与环境科学重点实验室 中国科学院海洋研究所 青岛 266071,中国科学院海洋生态与环境科学重点实验室 中国科学院海洋研究所 青岛 266071 |
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| 基金项目： | The NSFC-Shandong Joint Fund for Marine Ecology and Environmental Sciences under contract No. U1606404; the National Natural Science Foundation of China under contract No. 41230963; the National Basic Research Program (973 program) of China under contract Nos 2011CB403604 and G1999043708; the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11020305. |
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| 摘 要： | Calanus sinicus is a calanoid copepod widely distributed in coastal waters of China and Japan, and oversummering strategies may have major impacts on their population dynamics which in turn affect local marine food web structure. The abundance, stage composition, and sex composition of the planktonic copepod C. sinicus were studied from August to October 2002 in the southern Yellow Sea to understand how its population recovers from the over-summering state. Results showed that C. sinicus had low reproduction in August due to high temperature, except in waters near the Cheju Island with rich food and moderate bottom temperature, but the reproduction rates here decreased in September–October as food availability declined. When temperature dropped in September–October, C. sinicus actively propagated in coastal shallow waters. However, reproduction rates of C. sinicus individuals inhabiting the Yellow Sea Cold Water Mass(YSCWM) remained low during the three months of the study. The percentage of C. sinicus females was high during the reproductive period, which suggests that the sex composition of adult C. sinicus may reflect whether or not the population is in the reproductive mode.Numerous fifth copepodite stage(CV) C. sinicus aggregated in the YSCWM in a suspended developmental stage during the three months of this study, and they potentially served as the parental individuals for population development when conditions became optimal for reproduction later in the year.
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| 关 键 词： | 中华哲水蚤 发育期组成 性别组成 种群结构 黄海冷水团 生活史策略 |
| 收稿时间： | 2018/9/6 0:00:00 |
Changes in the population structure of Calanus sinicus during summer-autumn in the southern Yellow Sea |
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| Shi Yongqiang,Sun Song,Li Chaolun,Zhang Guangtao,Yang Bo and Ji Peng.Changes in the population structure of Calanus sinicus during summer-autumn in the southern Yellow Sea[J].Acta Oceanologica Sinica,2019,38(8):56-63. |
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| Authors: | Shi Yongqiang Sun Song Li Chaolun Zhang Guangtao Yang Bo and Ji Peng |
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| Abstract: | Calanus sinicus is a calanoid copepod widely distributed in coastal waters of China and Japan, and over-summering strategies may have major impacts on their population dynamics which in turn affect local marine food web structure. The abundance, stage composition, and sex composition of the planktonic copepod C. sinicus were studied from August to October 2002 in the southern Yellow Sea to understand how its population recovers from the over-summering state. Results showed that C. sinicus had low reproduction in August due to high temperature, except in waters near the Cheju Island with rich food and moderate bottom temperature, but the reproduction rates here decreased in September-October as food availability declined. When temperature dropped in September-October, C. sinicus actively propagated in coastal shallow waters. However, reproduction rates of C. sinicus individuals inhabiting the Yellow Sea Cold Water Mass (YSCWM) remained low during the three months of the study. The percentage of C. sinicus females was high during the reproductive period, which suggests that the sex composition of adult C. sinicus may reflect whether or not the population is in the reproductive mode. Numerous fifth copepodite stage (CV) C. sinicus aggregated in the YSCWM in a suspended developmental stage during the three months of this study, and they potentially served as the parental individuals for population development when conditions became optimal for reproduction later in the year. |
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| Keywords: | Calanus sinicus stage composition sex composition population structure Yellow Sea Cold Water Mass life history strategy |
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