Changes in abundance of larvae of the four domestic Chinese carps in the middle reach of the Yangtze River, China, before and after closing of the Three Gorges Dam
文献类型: 外文期刊
作者: Duan, Xinbin 1 ; Liu, Shaoping 1 ; Huang, Mugui 1 ; Qiu, Shunling 1 ; Li, Zhihua 1 ; Wang, Ke 1 ; Chen, Daqing 2 ;
作者机构: 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Fish Germplasm & Biotechnol, Minist Agr, Jinzhou 434000, Peoples R China
2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Fish Germplasm & Biotechnol
关键词: Fish larvae;Asian carps;Dynamic analysis;Three Gorges Dam;Yangtze River
期刊名称:ENVIRONMENTAL BIOLOGY OF FISHES ( 影响因子:1.844; 五年影响因子:1.839 )
ISSN:
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收录情况: SCI
摘要: The four domestic Chinese carps, i.e. grass carp (Ctenopharyngodon idella), black carp (Mylo-pharyngodon piceus), silver carpr (Hypophthalmich-thys molitrix) and bighead carp (Hypophthalmichthys nobilis), cast their drifting eggs in the running waterof the Yangtze River. In 1997-2005, a systematic study on the dynamics of the abundance the larvae of the four domestic Chinese carps was performed in the middle reach of the Yangtze River, close to Sanzhou city. It was calculated that in breeding seasons from early May to late June every year the abundance of fry drifting through the section of Sanzhou was 3.59 billion in 1997, 2.75 billion in 1998, 2.15 billion in 1999, 2.85 billion in 2000, 1.90 billion in 2001, 1.90 billion in 2002, 406 million in 2003, 339 million in 2004 and 105 million in 2005 respectively. Several environmental parameters related to the dynamics of larval abundance were also examined simultaneously. The construction of the Three Gorges Dam near Yichang between the upper and middle reaches of the Yangtze Riverhas apparently had a drastic influence on the abundance of fish larvae.
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