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学科主题: Ecology; Marine & Freshwater Biology
题名: Hydroacoustic study of spatial and temporal distribution of Gymnocypris przewalskii (Kessler, 1876) in Qinghai Lake, China
作者: Chen, D.1, 2; Zhang, X.1, 3; Tan, X.4; Wang, K.1, 2; Qiao, Y.5; Chang, Y.1
通讯作者: Chen, D, Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr, Key Lab Freshwater Fish Germplasm Resources & Bio, Jinzhou, Peoples R China
关键词: Gymnocypris przewalskii ; Hydroacoustic study ; Spatial and temporal distribution ; Qinghai Lake
刊名: ENVIRONMENTAL BIOLOGY OF FISHES
发表日期: 2009
DOI: 10.1007/s10641-008-9430-y
卷: 84, 期:2, 页:231-239
收录类别: SCI
文章类型: Article
部门归属: [Chen, D.; Zhang, X.; Wang, K.; Chang, Y.] Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr, Key Lab Freshwater Fish Germplasm Resources & Bio, Jinzhou, Peoples R China; [Chen, D.; Wang, K.] Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi, Peoples R China; [Zhang, X.] Huazhong Agr Univ, Coll Fisheries, Wuhan, Peoples R China; [Tan, X.] Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China; [Qiao, Y.] Chinese Acad Sci, State key Lab Freshwater Fish Ecol & Biotechnol, Inst Hydrobiol, Wuhan, Peoples R China
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
摘要: Gymnocypris przewalskii (Kessler 1876) is an endangered and state-protected rare fish species in Qinghai Lake, China. To further understand the life history and distribution of this fish, five surveys were carried out in Qinghai Lake between 2002-2006. Results of these surveys indicate that fishes were predominantly distributed about 2 m under the surface. In July, significant differences in fish density were found between surface and bottom layers (P = 0.001), and/or between middle and bottom layers (P = 0.025). Fish density was the greatest in the surface layer. In August and October, no significant differences were found between the different layers, but the bottom layer had a greater fish density. Furthermore, there were very large differences among different zones in fish distribution density. Differences in horizontal distribution were not significantly correlated to factors such as water depth and inshore distance, possibly because of very low and uniform fish density. Feeding, changes in water temperature, over-wintering and spawning appeared to influence fish distribution. Hydroacoustic estimates of G. przewalskii biomass in Qinghai Lake increased significantly between 2002 and 2006. We attribute this increase to the management measures put in place to protect this species.
英文摘要: Gymnocypris przewalskii (Kessler 1876) is an endangered and state-protected rare fish species in Qinghai Lake, China. To further understand the life history and distribution of this fish, five surveys were carried out in Qinghai Lake between 2002-2006. Results of these surveys indicate that fishes were predominantly distributed about 2 m under the surface. In July, significant differences in fish density were found between surface and bottom layers (P = 0.001), and/or between middle and bottom layers (P = 0.025). Fish density was the greatest in the surface layer. In August and October, no significant differences were found between the different layers, but the bottom layer had a greater fish density. Furthermore, there were very large differences among different zones in fish distribution density. Differences in horizontal distribution were not significantly correlated to factors such as water depth and inshore distance, possibly because of very low and uniform fish density. Feeding, changes in water temperature, over-wintering and spawning appeared to influence fish distribution. Hydroacoustic estimates of G. przewalskii biomass in Qinghai Lake increased significantly between 2002 and 2006. We attribute this increase to the management measures put in place to protect this species.
语种: 英语
WOS记录号: WOS:000263010400015
ISSN号: 0378-1909
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7882
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 Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr, Key Lab Freshwater Fish Germplasm Resources & Bio, Jinzhou, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi, Peoples R China
3.Huazhong Agr Univ, Coll Fisheries, Wuhan, Peoples R China
4.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
5.Chinese Acad Sci, State key Lab Freshwater Fish Ecol & Biotechnol, Inst Hydrobiol, Wuhan, Peoples R China

Recommended Citation:
Chen, D.; Zhang, X.; Tan, X.; Wang, K.; Qiao, Y.; Chang, Y..Hydroacoustic study of spatial and temporal distribution of Gymnocypris przewalskii (Kessler, 1876) in Qinghai Lake, China,ENVIRONMENTAL BIOLOGY OF FISHES,2009,84(2):231-239
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