Gonad development of an anadromous fish Coilia ectenes (Engraulidae) in lower reach of Yangtze River, China

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	Gonad development of an anadromous fish Coilia ectenes (Engraulidae) in lower reach of Yangtze River, China
	Li, Yuxuan ; Xie, Songguang ; Li, Zhongjie ; Gong, Wangbao ; He, Wenping
刊名	FISHERIES SCIENCE
	2007-12-01
卷号	73 期号:6 页码:1224-1230
关键词	anadromous Coilia ectenes fecundity gonad development Yangtze River
ISSN号	0919-9268
通讯作者	Xie, SG, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China
中文摘要	Anadromous Coilia ectenes was sampled from the Yangtze estuary at Chongming and two of the primary upstream spawning grounds at Jingjiang and Anqing in April, May, June and August 2006. Gonad development was analyzed for females. In April, fish were collected in the estuary and at Jingjiang, but not at Anqing. No female was mature (gonad at stages IV or V) at either location. In May, 45% of the females were mature in the estuary, 9% at Jingjiang and 5% at Anqing. In June, 86% were mature in the estuary, 83% at Jingjiang and 7% at Anqing. In August, C. ectenes was absent at Jingjiang. No female was mature in the estuary, and all females were mature at Anqing. Absolute fecundity (AF) increased significantly with standard length (SL) by a power function AF = 2.27 x 10(-6) x SL2.67 (r(2) = 0.57, n = 48, P < 0.05). Mature females in the estuary were smaller than those at Jingjiang and Anqing. Conservation of spawners in the upstream spawning grounds is important because they have a size-related fecundity advantage over the smaller spawners in the estuary.
英文摘要	Anadromous Coilia ectenes was sampled from the Yangtze estuary at Chongming and two of the primary upstream spawning grounds at Jingjiang and Anqing in April, May, June and August 2006. Gonad development was analyzed for females. In April, fish were collected in the estuary and at Jingjiang, but not at Anqing. No female was mature (gonad at stages IV or V) at either location. In May, 45% of the females were mature in the estuary, 9% at Jingjiang and 5% at Anqing. In June, 86% were mature in the estuary, 83% at Jingjiang and 7% at Anqing. In August, C. ectenes was absent at Jingjiang. No female was mature in the estuary, and all females were mature at Anqing. Absolute fecundity (AF) increased significantly with standard length (SL) by a power function AF = 2.27 x 10(-6) x SL2.67 (r(2) = 0.57, n = 48, P < 0.05). Mature females in the estuary were smaller than those at Jingjiang and Anqing. Conservation of spawners in the upstream spawning grounds is important because they have a size-related fecundity advantage over the smaller spawners in the estuary.
学科主题	Fisheries
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries
研究领域[WOS]	Fisheries
关键词[WOS]	SHAD ALOSA-SAPIDISSIMA ; SPAWNING MIGRATION ; ENERGY ALLOCATION ; RESTOCKING ; SALMON ; RHINE ; LAKE ; SEA
收录类别	SCI
语种	英语
WOS记录号	WOS:000251374600003
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8350]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Yuxuan,Xie, Songguang,Li, Zhongjie,et al. Gonad development of an anadromous fish Coilia ectenes (Engraulidae) in lower reach of Yangtze River, China[J]. FISHERIES SCIENCE,2007,73(6):1224-1230.
APA	Li, Yuxuan,Xie, Songguang,Li, Zhongjie,Gong, Wangbao,&He, Wenping.(2007).Gonad development of an anadromous fish Coilia ectenes (Engraulidae) in lower reach of Yangtze River, China.FISHERIES SCIENCE,73(6),1224-1230.
MLA	Li, Yuxuan,et al."Gonad development of an anadromous fish Coilia ectenes (Engraulidae) in lower reach of Yangtze River, China".FISHERIES SCIENCE 73.6(2007):1224-1230.