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学科主题: Ecology; Limnology
题名: The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis
作者: Yi-Feng Chen ; De-Kui He ; Bin Cai ; Zi-Ming Chen
通讯作者: Chen, YF, Chinese Acad Sci, Inst Hydrobiol, Lab Evolut & Biogeog & Freshwater Fishes, Wuhan 430072, Peoples R China
关键词: EVOLUTION ; FLATFISH
刊名: JOURNAL OF FRESHWATER ECOLOGY
发表日期: 2004
卷: 19, 期:2, 页:255-262
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, Lab Evolut & Biogeog & Freshwater Fishes, Wuhan 430072, Peoples R China; Bur Aquat Prod Xizang Autonomous Reg, Lasa 850000, Peoples R China; Chinese Acad Sci, Kunming Inst Zool, Kunming 650223, Peoples R China
摘要: The reproductive traits of Gymnocypris selincuoensis from Selincuo Lake and its tributaries were investigated in 1997 and 1998. The youngest mature male was age 7 with a standard length (SL) of 172.0 mm, and the youngest mature female was age 8 with a SL of 194.0 mm. The L(50)s Of SL and age at first maturity were respectively 250.32 mm and age 9 for males and 224.71 mm and age 8 for females. The gonadosomatic index (GSI) significantly changed with seasons for mature individuals but not for immature individuals. GSIs of mature females at stages IV and V of ovary development increased with SL and reached a maximum value at the SL range from 370 mm to 390 mm; the GSIs of mature males were negatively correlated with SL. The breeding season lasted from early April to early August. Egg size did not significantly change with SL but increased with the delay of spawning. The individual absolute fecundity varied from 1,341 to 28,002 eggs (mean 12,607+/-7,349), and the individual relative fecundity varied from 6.4 to 42.0 eggs.g(-1) (mean 25.5+/-9.7). The individual fecundity increased with total body weight; it also increased with SL for those of SL less than 370 mm. There was a rest of spawning for mature individuals.
WOS记录号: WOS:000221343400012
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9488
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
Yi-Feng Chen; De-Kui He; Bin Cai; Zi-Ming Chen.The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis,JOURNAL OF FRESHWATER ECOLOGY,2004,19(2):255-262
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