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Using drift nets to capture early life stages and monitor spawning of the Yangtze River Chinese sturgeon (Acipenser sinensis)
Wei, Q. W.; Kynard, B.; Yang, D. G.; Chen, X. H.; Du, H.; Shen, L.; Zhang, H.; Wei, QW, Chinese Acad Fisheries Sci, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr China, Yangtze River Fisheries Res Inst, 41 Jianghan Rd, Jingzhou City 434000, Hubei Province, Peoples R China
2009
Source PublicationJOURNAL OF APPLIED ICHTHYOLOGY
Volume25Pages:100-106
AbstractP>A sampling system for capturing sturgeon eggs using a D-shaped bottom anchored drift net was used to capture early life stages (ELS) of Chinese sturgeon, Acipenser sinensis, and monitor annual spawning success at Yichang on the Yangtze River, 1996-2004, before and just after the Three Gorges Dam began operation. Captured were 96 875 ELS (early life stages: eggs, yolk-sac larvae = eleuthero embryos, and larvae); most were eggs and only 2477 were yolk-sac larvae. Most ELS were captured in the main river channel and inside the bend at the Yichang spawning reach. Yolk-sac larvae were captured for a maximum of 3 days after hatching began, indicating quick dispersal downstream. The back-calculated day of egg fertilization over the eight years indicated a maximum spawning window of 23 days (20 October-10 November). Spawning in all years was restricted temporally, occurred mostly at night and during one or two spawning periods, each lasting several days. The brief temporal spawning window may reduce egg predation by opportunistic predators by flooding the river bottom with millions of eggs. During 1996-2002, the percentage of fertilized eggs in an annual 20-egg sample was between 63.5 to 94.1%; however, in 2003 the percentage fertilized was only 23.8%. This sudden decline may be related to the altered environmental conditions at Yichang caused by operation of the Three Gorges Dam. Further studies are needed to monitor spawning and changes in egg fertilization in this threatened population.
KeywordWhite Sturgeon Shortnose Sturgeon Lake Sturgeon Gezhouba Dam History Massachusetts Conservation Movement Flow
Department[Wei, Q. W.; Yang, D. G.; Chen, X. H.; Du, H.; Shen, L.; Zhang, H.] Chinese Acad Fisheries Sci, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr China, Yangtze River Fisheries Res Inst, Jingzhou City 434000, Hubei Province, Peoples R China; [Wei, Q. W.; Yang, D. G.] Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei Province, Peoples R China; [Wei, Q. W.; Yang, D. G.; Chen, X. H.; Du, H.; Shen, L.] Chinese Acad Fisheries Sci, Freshwater Fisheries Res Ctr, Wuxi City, Peoples R China; [Kynard, B.] US Geol Survey, Leetown Sci Ctr, SO Conte Anadromous Fish Res Ctr, Turners Falls, MA USA
Subject AreaFisheries ; Marine & Freshwater Biology
Funding OrganizationBureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004]
Indexed BySCI
Language英语
WOS IDWOS:000269496100017
Funding OrganizationBureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004] ; Bureau of Fisheries (Ministry of Agriculture) ; Bureau of Fisheries (Hubei Province) ; Chinese sturgeon Nature Reserve, Yichang City (Hubei Province) ; National Natural Science Foundation of China [30490231, 39570564]; Three Gorges Project Office, State Department [1-03-02-01-03]; Ministry of Science and Technology [2000DIB50177, 2002DEA10004]
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7600
Collection期刊论文
Corresponding AuthorWei, QW, Chinese Acad Fisheries Sci, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr China, Yangtze River Fisheries Res Inst, 41 Jianghan Rd, Jingzhou City 434000, Hubei Province, Peoples R China
Recommended Citation
GB/T 7714
Wei, Q. W.,Kynard, B.,Yang, D. G.,et al. Using drift nets to capture early life stages and monitor spawning of the Yangtze River Chinese sturgeon (Acipenser sinensis)[J]. JOURNAL OF APPLIED ICHTHYOLOGY,2009,25:100-106.
APA Wei, Q. W..,Kynard, B..,Yang, D. G..,Chen, X. H..,Du, H..,...&Wei, QW, Chinese Acad Fisheries Sci, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr China, Yangtze River Fisheries Res Inst, 41 Jianghan Rd, Jingzhou City 434000, Hubei Province, Peoples R China.(2009).Using drift nets to capture early life stages and monitor spawning of the Yangtze River Chinese sturgeon (Acipenser sinensis).JOURNAL OF APPLIED ICHTHYOLOGY,25,100-106.
MLA Wei, Q. W.,et al."Using drift nets to capture early life stages and monitor spawning of the Yangtze River Chinese sturgeon (Acipenser sinensis)".JOURNAL OF APPLIED ICHTHYOLOGY 25(2009):100-106.
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