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学科主题: Limnology; Marine & Freshwater Biology
题名: Changes of Leptodora kindti abundance (1957-1996) in a planktivorous fishes-dominated subtropical Chinese lake (Lake Donghu)
作者: Xie, P; Huang, XF; Takamura, N
通讯作者: Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, CERN,Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
关键词: NEUSIEDLER-SEE ; ZOOPLANKTON ; PREDATOR ; FOOD ; WASHINGTON ; BEHAVIOR ; DAPHNIA ; SHALLOW ; AUSTRIA
刊名: ARCHIV FUR HYDROBIOLOGIE
发表日期: 2000-02-01
卷: 147, 期:3, 页:351-372
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, CERN,Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; Natl Inst Environm Studies, Tsukuba, Ibaraki 305, Japan
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Limnology ; Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: The changes of L. kindti density from 1957 to 1996 were studied in a shallow, eutrophic Chinese lake, Lake Donghu. Despite the fact that the fish yield of planktivorous fish (silver carp and bighead carp) has increased steadily, the population density of L. kindti has also increased since 1957 and peaked in 1982/1983, The increase of both fish and L. kindti densities during this period may have benefitted from a considerable increase in the densities of their zooplankton prey. and fish predation on L. kindti might have been minor. As the fish yield increased further, their predation began to suppress most zooplankton prey including L. kindti. The largely increased fish predation on L. kindti is also evidenced by the remarkable decline of their body length after 1984. The density of L. kindti was significantly higher at the pelagic station (II) than at the littoral station (I), although for L. kindti, the littoral zone was significantly more resource profitable than the pelagic zone. The gradient of fish predation (more fish in the littoral zone) is the most likely explanation, since L. kindti is reported to be a preferred prey for many planktivorous fishes. The maximum density of L. kindti was 1.78 ind./I (on Aug. 17, 1984) at Station I and 1.55 ind./I (on Sep. 13, 1985) at Station II, respectively, which are close to those in several other eutrophic lakes.
英文摘要: The changes of L. kindti density from 1957 to 1996 were studied in a shallow, eutrophic Chinese lake, Lake Donghu. Despite the fact that the fish yield of planktivorous fish (silver carp and bighead carp) has increased steadily, the population density of L. kindti has also increased since 1957 and peaked in 1982/1983, The increase of both fish and L. kindti densities during this period may have benefitted from a considerable increase in the densities of their zooplankton prey. and fish predation on L. kindti might have been minor. As the fish yield increased further, their predation began to suppress most zooplankton prey including L. kindti. The largely increased fish predation on L. kindti is also evidenced by the remarkable decline of their body length after 1984. The density of L. kindti was significantly higher at the pelagic station (II) than at the littoral station (I), although for L. kindti, the littoral zone was significantly more resource profitable than the pelagic zone. The gradient of fish predation (more fish in the littoral zone) is the most likely explanation, since L. kindti is reported to be a preferred prey for many planktivorous fishes.
关键词[WOS]: NEUSIEDLER-SEE ; ZOOPLANKTON ; PREDATOR ; FOOD ; WASHINGTON ; BEHAVIOR ; DAPHNIA ; SHALLOW ; AUSTRIA
语种: 英语
WOS记录号: WOS:000085856000006
ISSN号: 0003-9136
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/10142
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, CERN,Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Natl Inst Environm Studies, Tsukuba, Ibaraki 305, Japan

Recommended Citation:
Xie, P; Huang, XF; Takamura, N.Changes of Leptodora kindti abundance (1957-1996) in a planktivorous fishes-dominated subtropical Chinese lake (Lake Donghu),ARCHIV FUR HYDROBIOLOGIE,2000,147(3):351-372
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