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学科主题: Marine & Freshwater Biology
题名: The precocious Chinese mitten crab: Changes of gonad, survival rate, and life span in a freshwater lake
作者: Jin, G; Xie, P; Li, ZJ
通讯作者: Jin, G, Shenzen Polytech, Dept Appl Biol Engn, 518055 Shenzhen, Peoples R China
关键词: DECAPODA
刊名: JOURNAL OF CRUSTACEAN BIOLOGY
发表日期: 2002-05-01
卷: 22, 期:2, 页:411-415
收录类别: SCI
文章类型: Article
部门归属: Shenzen Polytech, Dept Appl Biol Engn, 518055 Shenzhen, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Changes of the gonad. survival rate, and life span of the precocious (i.e., sexually mature in their first October-November, at the age of 5 or 6 months) Chinese mitten crab (Eriocheir sinensis) were studied in a small, shallow, macrophytic, freshwater lake along the middle reaches of the Changjiang River, China. The gonosomatic index (GSI) reached peak during the next March when the female GSI was 12.32 +/- 1.75 SD% and the male GSI A as 4.24 +/- 0.19%. The sexual glands degraded from then on. In the first ten-day period of the following July, there was no complete ovum in the ovary. and the sperm became thin and lost adhesion. The population declined sharply from November to July, and the last one (a female) died in the middle of July, which indicated that the life span of the precocious crab was about 12 months (from larval hatching in June to death in July of next year). The survival curve might be expressed as Y = 1.09exp(-0.018x) (Y survival rate; x: days) for the precocious crabs stocked in experimental cages.
英文摘要: Changes of the gonad. survival rate, and life span of the precocious (i.e., sexually mature in their first October-November, at the age of 5 or 6 months) Chinese mitten crab (Eriocheir sinensis) were studied in a small, shallow, macrophytic, freshwater lake along the middle reaches of the Changjiang River, China. The gonosomatic index (GSI) reached peak during the next March when the female GSI was 12.32 +/- 1.75 SD% and the male GSI A as 4.24 +/- 0.19%. The sexual glands degraded from then on. In the first ten-day period of the following July, there was no complete ovum in the ovary. and the sperm became thin and lost adhesion. The population declined sharply from November to July, and the last one (a female) died in the middle of July, which indicated that the life span of the precocious crab was about 12 months (from larval hatching in June to death in July of next year). The survival curve might be expressed as Y = 1.09exp(-0.018x) (Y survival rate; x: days) for the precocious crabs stocked in experimental cages.
关键词[WOS]: DECAPODA
语种: 英语
WOS记录号: WOS:000175866100020
ISSN号: 0278-0372
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9852
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Shenzen Polytech, Dept Appl Biol Engn, 518055 Shenzhen, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China

Recommended Citation:
Jin, G; Xie, P; Li, ZJ.The precocious Chinese mitten crab: Changes of gonad, survival rate, and life span in a freshwater lake,JOURNAL OF CRUSTACEAN BIOLOGY,2002,22(2):411-415
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