Preliminary evidence of delayed spawning and suppressed larval growth and condition of the major carps in the Yangtze River below the Three Gorges Dam
文献类型：期刊论文
| 作者 | Zhang, Guo1,2; Wu, Lang1,2; Li, Hongtao1,2; Liu, Ming1; Cheng, Fei1; Murphy, Brian R.3,4; Xie, Songguang1 |
| 刊名 | ENVIRONMENTAL BIOLOGY OF FISHES
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 93期号:3页码:439-447 |
| 关键词 | Three Gorges Dam Major carps Otolith Early growth Hatch date |
| ISSN号 | 0378-1909 |
| 通讯作者 | Xie, SG (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Biodivers & Conservat Aquat Organisms, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | Commercial catches of the 'major carps' (grass carp Ctenopharyngodon idella, silver carp Hypophthalmichthys molitrix, black carp Mylopharyngodon piceus and bighead carp Aristichthys nobilis) in the middle and lower reaches of the Yangtze River have declined precipitously since construction of the Three Gorges Dam (TGD). To assess specific environmental effects, young-of-the-year major carps were collected below TGD in the Yangtze River at Jianli (larvae) and E'zhou (juveniles) and in the Dongting Lake (juveniles) during June-August 2007. Lapillar otoliths were analyzed to determine early growth. There were no discernible growth increments in otoliths for a majority of the larvae (38 of 63 grass carp and 40 of 47 silver carp), while increments were evident in otoliths formed in the larval stage for all the juveniles, indicating that larvae without discernible increments failed to recruit to the juvenile stage. Back-calculated hatch dates of major carps were between 31 May and 24 July. The initiation of the spawning season was delayed about 1 month compared to pre-TGD records. Larval growth rates, as reflected by otolith-increment width, were lower at Dongting Lake (closer to TGD) than at E'zhou (farther from TGD), indicating that TGD-moderated effects on early growth and development of carps are more apparent for fishes hatched nearer to the dam. The delay in spawning and decreased early growth may partly explain the recent decline of the major carp resources in the middle and lower Yangtze River. |
| 英文摘要 | Commercial catches of the 'major carps' (grass carp Ctenopharyngodon idella, silver carp Hypophthalmichthys molitrix, black carp Mylopharyngodon piceus and bighead carp Aristichthys nobilis) in the middle and lower reaches of the Yangtze River have declined precipitously since construction of the Three Gorges Dam (TGD). To assess specific environmental effects, young-of-the-year major carps were collected below TGD in the Yangtze River at Jianli (larvae) and E'zhou (juveniles) and in the Dongting Lake (juveniles) during June-August 2007. Lapillar otoliths were analyzed to determine early growth. There were no discernible growth increments in otoliths for a majority of the larvae (38 of 63 grass carp and 40 of 47 silver carp), while increments were evident in otoliths formed in the larval stage for all the juveniles, indicating that larvae without discernible increments failed to recruit to the juvenile stage. Back-calculated hatch dates of major carps were between 31 May and 24 July. The initiation of the spawning season was delayed about 1 month compared to pre-TGD records. Larval growth rates, as reflected by otolith-increment width, were lower at Dongting Lake (closer to TGD) than at E'zhou (farther from TGD), indicating that TGD-moderated effects on early growth and development of carps are more apparent for fishes hatched nearer to the dam. The delay in spawning and decreased early growth may partly explain the recent decline of the major carp resources in the middle and lower Yangtze River. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Ecology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 关键词[WOS] | INCREMENT FORMATION ; CLUPEA-HARENGUS ; RING DEPOSITION ; FISH ; MORTALITY ; IMPACTS ; CHINA ; PATTERNS ; FLOUNDER ; OTOLITHS |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China (973 Program)[2010CB429005]; National Natural Science Foundation of China[30771642]; Chinese Academy of Sciences[2010T2S25] |
| 语种 | 英语 |
| WOS记录号 | WOS:000299768600012 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16711]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Biodivers & Conservat Aquat Organisms, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Virginia Polytech Inst & State Univ, Dept Fish & Wildlife Conservat, Blacksburg, VA 24061 USA 4.Virginia Polytech Inst & State Univ, Conservat Management Inst, Blacksburg, VA 24061 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Guo,Wu, Lang,Li, Hongtao,et al. Preliminary evidence of delayed spawning and suppressed larval growth and condition of the major carps in the Yangtze River below the Three Gorges Dam[J]. ENVIRONMENTAL BIOLOGY OF FISHES,2012,93(3):439-447. |
| APA | Zhang, Guo.,Wu, Lang.,Li, Hongtao.,Liu, Ming.,Cheng, Fei.,...&Xie, Songguang.(2012).Preliminary evidence of delayed spawning and suppressed larval growth and condition of the major carps in the Yangtze River below the Three Gorges Dam.ENVIRONMENTAL BIOLOGY OF FISHES,93(3),439-447. |
| MLA | Zhang, Guo,et al."Preliminary evidence of delayed spawning and suppressed larval growth and condition of the major carps in the Yangtze River below the Three Gorges Dam".ENVIRONMENTAL BIOLOGY OF FISHES 93.3(2012):439-447. |
入库方式： OAI收割
来源：水生生物研究所
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