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学科主题: Fisheries; Marine & Freshwater Biology
题名: Dietary-morphological relationships of fishes in Liangzi Lake, China
作者: S. Xie ; Y. Cui and Z. Li
通讯作者: Xie, S, Acad Sinica, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
关键词: diet ; morphology ; resource partitioning ; Liangzi Lake
刊名: JOURNAL OF FISH BIOLOGY
发表日期: 2001
卷: 58, 期:6, 页:1714-1729
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
摘要: Species in Liangzi Lake were clustered into four trophic groups: Hemiramphus kurumeus and Hemiculter bleekeri bleekeri fed predominantly on terrestrial insects; Carassius auratus auratus and Abbottina rivularis on non-animal food; Hypseleotris swinhonis, Ctenogobius giurinus, Pseudorasbora parva and Toxabramis swinhonis on cladocerans or copepods; Culterichthys erythropterus on decapod shrimps. Gut length, mouth width, mouth height, gill raker length and gill raker spacing, varied widely among species. With the exception of three species pairs (H. swinhonis, C. glurinus; C. erythropterus, H. kurumeus; T. swinhonis, H. bleekeri bleekeri), principal components analysis of morphological variables revealed over-dispersion of species. Canonical correspondence analysis of dietary and morphological data revealed five significant dietary-morphological correlations. The first three roots explained > 85% of the total variance. The first root reflected mainly the relationship of gut length to non-animal feud, with an increase in gut length associated with an increase in non-animal food. The second root was influenced strongly by the relationship of the gill raker spacing to consumption of copepods, with an increase in gill raker spacing associated positively with copepods in the diet. The third root was influenced by the relationship of mouth gape to consumption of fish and decapod shrimps, with an increase in mouth gape associated with more fish and decapod shrimps in the diet. These significant dietary-morphological relationships supported the eco-morphological hypotheses that fish morphology influence food use, and morphological variation is important in determining ecological segregation of co-existing fish species. (C) 2001 The Fisheries Society of the British Isles.
WOS记录号: WOS:000169579500019
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9978
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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S. Xie; Y. Cui and Z. Li.Dietary-morphological relationships of fishes in Liangzi Lake, China,JOURNAL OF FISH BIOLOGY,2001,58(6):1714-1729
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