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题名: River-lake migration of fishes in the Dongting Lake area of the Yangtze floodplain
作者: Ru, H. -J.1, 2; Liu, X. -Q.1
通讯作者: Liu, XQ (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China.
关键词: LATERAL MIGRATION ; RHINE ; HABITAT ; AMAZON ; BREAM
刊名: JOURNAL OF APPLIED ICHTHYOLOGY
发表日期: 2013-06-01
DOI: 10.1111/jai.12116
卷: 29, 期:3, 页:594-601
收录类别: SCI
文章类型: Article
部门归属: [Ru, H. -J. ; Liu, X. -Q.] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China ; [Ru, H. -J.] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Knowledge Innovation Program of the Institute of Hydrobiology of Chinese Academy of Sciences [KSCX2-SW-110]; National Basic Research Program of China [2003CB415206]; National Natural Science Foundation of China [41001117]
类目[WOS]: Fisheries ; Marine & Freshwater Biology
研究领域[WOS]: Fisheries ; Marine & Freshwater Biology
摘要: Over the past few decades, fish resources have declined severely owing to the riverlake disconnection within the Yangtze River floodplain. Studies on fish migrations between rivers and floodplain waters are imperative for fish resources restoration and lake management. However, few studies have as yet documented the migration rhythms of riverlake migratory fishes. Monthly investigations of the fish assemblage structure were conducted in three regions of the Dongting Lake, which is connected to the Yangtze River. Main results were: (i) Fish catches varied greatly, depending on the water level and area of the lake; (ii) Ten riverlake migratoty species were caught during the study, 80% of these during JulyOctober when the water level was high. Species richness and relative abundance both decreased with increasing distance from the river, and the timing of peak abundance occurred later in the year; (iii) Abundance of grass carp (Ctenopharyngodon idella) and silver carp (Hypophthalmichthys molitrix) peaked in July and August and were mainly composed of 0+fishes. The results revealed that the key time for migration into the lake is JulyAugust. Combining the results from previous studies, a comprehensive view is given of migration patterns of four domestic Chinese carps; (iv) Brass gudgeon (Coreius heterodon), appeared to migrate into the Dongting Lake as two separate shoals, differentiated by body size. They also appeared to remain close to the lake mouth area. Based on the above results, two recommendations can be made for riverlake migratory fish conservation in the Yangtze floodplain: prolonging the current fishing ban period of AprilJune to AprilSeptember; and opening sluice gates for as long as possible during AprilSeptember in order to maximize the opportunities for fish migration.
英文摘要: Over the past few decades, fish resources have declined severely owing to the riverlake disconnection within the Yangtze River floodplain. Studies on fish migrations between rivers and floodplain waters are imperative for fish resources restoration and lake management. However, few studies have as yet documented the migration rhythms of riverlake migratory fishes. Monthly investigations of the fish assemblage structure were conducted in three regions of the Dongting Lake, which is connected to the Yangtze River. Main results were: (i) Fish catches varied greatly, depending on the water level and area of the lake; (ii) Ten riverlake migratoty species were caught during the study, 80% of these during JulyOctober when the water level was high. Species richness and relative abundance both decreased with increasing distance from the river, and the timing of peak abundance occurred later in the year; (iii) Abundance of grass carp (Ctenopharyngodon idella) and silver carp (Hypophthalmichthys molitrix) peaked in July and August and were mainly composed of 0+fishes. The results revealed that the key time for migration into the lake is JulyAugust. Combining the results from previous studies, a comprehensive view is given of migration patterns of four domestic Chinese carps; (iv) Brass gudgeon (Coreius heterodon), appeared to migrate into the Dongting Lake as two separate shoals, differentiated by body size. They also appeared to remain close to the lake mouth area. Based on the above results, two recommendations can be made for riverlake migratory fish conservation in the Yangtze floodplain: prolonging the current fishing ban period of AprilJune to AprilSeptember; and opening sluice gates for as long as possible during AprilSeptember in order to maximize the opportunities for fish migration.
关键词[WOS]: LATERAL MIGRATION ; RHINE ; HABITAT ; AMAZON ; BREAM
语种: 英语
WOS记录号: WOS:000318569800017
ISSN号: 0175-8659
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19284
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China

Recommended Citation:
Ru, HJ; Liu, XQ.River-lake migration of fishes in the Dongting Lake area of the Yangtze floodplain,JOURNAL OF APPLIED ICHTHYOLOGY,2013,29(3):594-601
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