Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes

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	Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes
	Wang, HZ ; Wang, HJ ; Liang, XM ; Cui, YD
刊名	AQUACULTURE
	2006-05-31
卷号	255 期号:1-4 页码:456-465
关键词	Yangtze lakes Chinese mitten crab culture maximal yield models optimal-stocking model
ISSN号	0044-8486
通讯作者	Wang, HZ, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	The fanning of Chinese mitten crab, a quality aquatic product in China and neighbouring Asian countries, has been developing rapidly in China since last decade. It reached a total yield of 3.4 X 10(5) tonnes in 2002. Due to the successive over-stocking year after year, many lakes in the mid-lower Yangtze Basin, the main farming area, are under deterioration, leading to a reduction of crab yield and quality, and, subsequently, a loss of fanning profits. Aiming at a normal development of crab culture and the sustainable use of lakes, an annual investigation dealing with lake environmental factors in relation to stocked crab populations was carried out at 20 farms in 4 lakes. The results show that the submersed macrophyte biomass (B-Mac) is the key factor affecting annual crab yield (CY). Using the ratio of Secchi depth to mean depth (Z(SD)/Z(M)), an easily measured parameter closely correlated to BMac, as driving variable, 10 regression models of maximal crab yields were generated (r(2) ranging 0.49-0.81). Based on the theory of MSY (Maximum Sustainable Yield), in combination with body-weight (BW) and recapture rate (RR) of adult crabs, a general optimal stocking model was eventually formulated. All models are simple and easy to operate. Comments on their applications and prospects are given in brief. (c) 2006 Elsevier B.V. All rights reserved.
英文摘要	The fanning of Chinese mitten crab, a quality aquatic product in China and neighbouring Asian countries, has been developing rapidly in China since last decade. It reached a total yield of 3.4 X 10(5) tonnes in 2002. Due to the successive over-stocking year after year, many lakes in the mid-lower Yangtze Basin, the main farming area, are under deterioration, leading to a reduction of crab yield and quality, and, subsequently, a loss of fanning profits. Aiming at a normal development of crab culture and the sustainable use of lakes, an annual investigation dealing with lake environmental factors in relation to stocked crab populations was carried out at 20 farms in 4 lakes. The results show that the submersed macrophyte biomass (B-Mac) is the key factor affecting annual crab yield (CY). Using the ratio of Secchi depth to mean depth (Z(SD)/Z(M)), an easily measured parameter closely correlated to BMac, as driving variable, 10 regression models of maximal crab yields were generated (r(2) ranging 0.49-0.81). Based on the theory of MSY (Maximum Sustainable Yield), in combination with body-weight (BW) and recapture rate (RR) of adult crabs, a general optimal stocking model was eventually formulated. All models are simple and easy to operate. Comments on their applications and prospects are given in brief. (c) 2006 Elsevier B.V. All rights reserved.
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]	MORPHOEDAPHIC INDEX ; FISH YIELDS ; MACROPHYTES ; CRUSTACEA
收录类别	SCI
语种	英语
WOS记录号	WOS:000238457300049
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8948]
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 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Wang, HZ,Wang, HJ,Liang, XM,et al. Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes[J]. AQUACULTURE,2006,255(1-4):456-465.
APA	Wang, HZ,Wang, HJ,Liang, XM,&Cui, YD.(2006).Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes.AQUACULTURE,255(1-4),456-465.
MLA	Wang, HZ,et al."Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes".AQUACULTURE 255.1-4(2006):456-465.