Seasonal variation of reproduction rates and body size of Calanus sinicus in the Southern Yellow Sea, China

doi:10.1093/plankt/fbh164

	Seasonal variation of reproduction rates and body size of Calanus sinicus in the Southern Yellow Sea, China
	Zhang, GT; Sun, S; Zhang, F; Sun, S, Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
	2005-02-01
发表期刊	JOURNAL OF PLANKTON RESEARCH
ISSN	0142-7873
卷号	27 期号:2 页码:135-143
文章类型	Article
摘要	Annual variations of egg production rate (EPR) and clutch size of Calanus sinicus, as well as body size of females (prosome length and dry weight), were investigated at a series of stations in the Southern Yellow Sea by onboard incubation. Calanus sinicus was spawning in all the 11 cruises investigated, and the annual variation of EPR was bimodal. Monthly average EPR was highest from May to July, respectively, 5.97, 5.36 and 6.30 eggs female(-1) d(-1), then decreased dramatically to only 1.37 eggs female(-1) d(-1) in August and attained the lowest 1.07 eggs female(-1) d(-1) in October. In November, average EPR increased again to 4.31 eggs female(-1) d(-1). Seasonal variation of clutch size was similar to EPR, except that it decreased gradually after August rather than dramatically as did EPR. Prosome length of females was maximum in May and minimum in October, but dry weight was highest in November. Monthly average EPR correlated better with prosome length than dry weight, while clutch size was rather determined by dry weight of females. It is suggested that egg production of C. sinicus was active during two discontinuous periods when both surface and bottom temperature fell into its favorite range (i.e. 10-23degreesC), and different reproductive strategies were adopted in these two reproductive peaks: other than the highest EPR, longer prosome length was also achieved by C. sinicus from May to July, while females in November developed shorter bodies but accumulated more energy for reproduction.; Annual variations of egg production rate (EPR) and clutch size of Calanus sinicus, as well as body size of females (prosome length and dry weight), were investigated at a series of stations in the Southern Yellow Sea by onboard incubation. Calanus sinicus was spawning in all the 11 cruises investigated, and the annual variation of EPR was bimodal. Monthly average EPR was highest from May to July, respectively, 5.97, 5.36 and 6.30 eggs female(-1) d(-1), then decreased dramatically to only 1.37 eggs female(-1) d(-1) in August and attained the lowest 1.07 eggs female(-1) d(-1) in October. In November, average EPR increased again to 4.31 eggs female(-1) d(-1). Seasonal variation of clutch size was similar to EPR, except that it decreased gradually after August rather than dramatically as did EPR. Prosome length of females was maximum in May and minimum in October, but dry weight was highest in November. Monthly average EPR correlated better with prosome length than dry weight, while clutch size was rather determined by dry weight of females. It is suggested that egg production of C. sinicus was active during two discontinuous periods when both surface and bottom temperature fell into its favorite range (i.e. 10-23degreesC), and different reproductive strategies were adopted in these two reproductive peaks: other than the highest EPR, longer prosome length was also achieved by C. sinicus from May to July, while females in November developed shorter bodies but accumulated more energy for reproduction.
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1093/plankt/fbh164
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000227356600001
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/1818
专题	海洋生态与环境科学重点实验室胶州湾海洋生态系统国家野外研究站
通讯作者	Sun, S, Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
作者单位	Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhang, GT,Sun, S,Zhang, F,et al. Seasonal variation of reproduction rates and body size of Calanus sinicus in the Southern Yellow Sea, China[J]. JOURNAL OF PLANKTON RESEARCH,2005,27(2):135-143.
APA	Zhang, GT,Sun, S,Zhang, F,&Sun, S, Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China.(2005).Seasonal variation of reproduction rates and body size of Calanus sinicus in the Southern Yellow Sea, China.JOURNAL OF PLANKTON RESEARCH,27(2),135-143.
MLA	Zhang, GT,et al."Seasonal variation of reproduction rates and body size of Calanus sinicus in the Southern Yellow Sea, China".JOURNAL OF PLANKTON RESEARCH 27.2(2005):135-143.

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