Reproductive biology of Coilia mystus (Linnaeus) from the Yangtze Estuary, China: responses to overexploitation

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	Reproductive biology of Coilia mystus (Linnaeus) from the Yangtze Estuary, China: responses to overexploitation
	He, W. -P.1,2,3,4; Li, Y. -X.1,2,3; Liu, M.1,3; Radhakrishnan, K. V.1,3; Li, Z. -J.1,3; Murphy, B. R.5,6; Xie, S. -G.1,3
刊名	JOURNAL OF APPLIED ICHTHYOLOGY
	2011-10-01
卷号	27 期号:5 页码:1197-1202
关键词	FECUNDITY MATURITY ECTENES CYCLE RIVER LAKE COD AGE
ISSN号	0175-8659
通讯作者	Xie, SG (reprint author), Chinese Acad Sci, Key Lab Biodivers & Conservat Aquat Organisms, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China ; xiesg@ihb.ac.cn
中文摘要	Fishery harvest of Coilia mystus in the Yangtze Estuary has declined dramatically since the late 1990s. A full understanding of the reproductive biology of this species is essential for effective management of the population. A total of 1072 females of C. mystus collected from the Yangtze Estuary area between May 2006 and September 2007 were analyzed to reveal the general reproductive biology of the population. Females with increased gonadosomatic index (GSI) and gonads developed to stages IV and V occurred mainly from March through August, indicating a major spawning season in this period; there were also a few females with increased GSI and developed gonads observed in November and January. Absolute fecundity (AF) ranged from 3093 to 36 786; and increased with both body weight (BW) and age. The relationship of AF to BW was fitted to a linear function AF = 924.72 x BW-414.17 (r(2) = 0.82, n = 134, P < 0.05). Relative fecundity was 871 eggs per gram. Oocyte diameter (OD) of mature females ranged from 0.55 to 0.90 mm with a mean (+/- SD) of 0.71 +/- 0.05 mm (n = 3927), independent of BW. The frequency distribution of OD showed a single mode and histological examination demonstrated that the development of oocytes was synchronous within an ovary, suggesting that C. mystus is a single spawner. Compared to previous studies, females in this study tended to produce more but smaller eggs. This increased fecundity may represent biological compensation for the decline in abundance of the population due to overexploitation.
英文摘要	Fishery harvest of Coilia mystus in the Yangtze Estuary has declined dramatically since the late 1990s. A full understanding of the reproductive biology of this species is essential for effective management of the population. A total of 1072 females of C. mystus collected from the Yangtze Estuary area between May 2006 and September 2007 were analyzed to reveal the general reproductive biology of the population. Females with increased gonadosomatic index (GSI) and gonads developed to stages IV and V occurred mainly from March through August, indicating a major spawning season in this period; there were also a few females with increased GSI and developed gonads observed in November and January. Absolute fecundity (AF) ranged from 3093 to 36 786; and increased with both body weight (BW) and age. The relationship of AF to BW was fitted to a linear function AF = 924.72 x BW-414.17 (r(2) = 0.82, n = 134, P < 0.05). Relative fecundity was 871 eggs per gram. Oocyte diameter (OD) of mature females ranged from 0.55 to 0.90 mm with a mean (+/- SD) of 0.71 +/- 0.05 mm (n = 3927), independent of BW. The frequency distribution of OD showed a single mode and histological examination demonstrated that the development of oocytes was synchronous within an ovary, suggesting that C. mystus is a single spawner. Compared to previous studies, females in this study tended to produce more but smaller eggs. This increased fecundity may represent biological compensation for the decline in abundance of the population due to overexploitation.
学科主题	Fisheries; Marine & Freshwater Biology
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries ; Marine & Freshwater Biology
研究领域[WOS]	Fisheries ; Marine & Freshwater Biology
关键词[WOS]	FECUNDITY ; MATURITY ; ECTENES ; CYCLE ; RIVER ; LAKE ; COD ; AGE
收录类别	SCI
资助信息	National Basic Research Program of China (973 Program)[2010CB429005]; National Natural Science Foundation of China[30770354]; State Key Laboratory of Freshwater Ecology and Biotechnology[2009FB15]; Chinese Academy of Sciences[2010T2S25]; Chinese Academy of Sciences; Acorn Alcinda Foundation, Lewes, Delaware, USA
语种	英语
WOS记录号	WOS:000295013300011
公开日期	2011-11-09
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/16263]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Key Lab Biodivers & Conservat Aquat Organisms, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Chinese Acad Sci, Huaian Res Ctr, Inst Hydrobiol, Huaian, Jiangsu, Peoples R China 4.Rongchang Campus SW Univ, Dept Fisheries, Chongqing, Peoples R China 5.Virginia Polytech Inst & State Univ, Dept Fisheries & Wildlife Sci, Blacksburg, VA 24061 USA 6.Virginia Polytech Inst & State Univ, Conservat Management Inst, Blacksburg, VA 24061 USA
推荐引用方式 GB/T 7714	He, W. -P.,Li, Y. -X.,Liu, M.,et al. Reproductive biology of Coilia mystus (Linnaeus) from the Yangtze Estuary, China: responses to overexploitation[J]. JOURNAL OF APPLIED ICHTHYOLOGY,2011,27(5):1197-1202.
APA	He, W. -P..,Li, Y. -X..,Liu, M..,Radhakrishnan, K. V..,Li, Z. -J..,...&Xie, S. -G..(2011).Reproductive biology of Coilia mystus (Linnaeus) from the Yangtze Estuary, China: responses to overexploitation.JOURNAL OF APPLIED ICHTHYOLOGY,27(5),1197-1202.
MLA	He, W. -P.,et al."Reproductive biology of Coilia mystus (Linnaeus) from the Yangtze Estuary, China: responses to overexploitation".JOURNAL OF APPLIED ICHTHYOLOGY 27.5(2011):1197-1202.