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Stocking models of Chinese mitten crab (Eriocheir japonica sinensis) in Yangtze lakes
Wang, HZ; Wang, HJ; Liang, XM; Cui, YD; Wang, HZ, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2006-05-31
Source PublicationAQUACULTURE
ISSN0044-8486
Volume255Issue:1-4Pages:456-465
AbstractThe 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.; 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.
SubtypeArticle
KeywordYangtze Lakes Chinese Mitten Crab Culture Maximal Yield Models Optimal-stocking Model
DepartmentChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
Subject AreaFisheries ; Marine & Freshwater Biology
DOI10.1016/j.aquaculture.2006.01.005
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000238457300049
WOS KeywordMORPHOEDAPHIC INDEX ; FISH YIELDS ; MACROPHYTES ; CRUSTACEA
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8948
Collection期刊论文
Corresponding AuthorWang, HZ, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Affiliation1.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
Recommended Citation
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,&Wang, HZ, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(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.
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