The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis

	The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis
	Chen YF 1; He DK 1; Cai B 2; Chen ZM 3
	2004
发表期刊	JOURNAL OF FRESHWATER ECOLOGY
ISSN	0270-5060
卷号	19 期号:2 页码:255-262
合作性质	其它
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.
资助者	This study was supported by the knowledge innovation project of CAS (KSCX2-SW-125), the National Science Foundation of China (39970096,30200029) and the Ministry of Agriculture of China (Fishery 95-B-96-10-01-05). ; This study was supported by the knowledge innovation project of CAS (KSCX2-SW-125), the National Science Foundation of China (39970096,30200029) and the Ministry of Agriculture of China (Fishery 95-B-96-10-01-05).
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收录类别	SCI
语种	英语
资助者	This study was supported by the knowledge innovation project of CAS (KSCX2-SW-125), the National Science Foundation of China (39970096,30200029) and the Ministry of Agriculture of China (Fishery 95-B-96-10-01-05). ; This study was supported by the knowledge innovation project of CAS (KSCX2-SW-125), the National Science Foundation of China (39970096,30200029) and the Ministry of Agriculture of China (Fishery 95-B-96-10-01-05).
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/5313
专题	科研部门_系统进化与生物地理学（杨君兴）
作者单位	1.Laboratoty of Evolution and Biogeography for Freshwater Fishes Institute of Hydrobiology, Chinese Academy of Sciences Wuhan 430072, P.R. China 2.The Bureau of Aquatic Products Xizang Autonomous Region Lasa 850000, P.R. China 3.Kunming Institute of Zoology, Chinese Academy of Sciences Kunming 650223, P. R. China
推荐引用方式 GB/T 7714	Chen YF,He DK,Cai B,et al. The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis[J]. JOURNAL OF FRESHWATER ECOLOGY,2004,19(2):255-262.
APA	Chen YF,He DK,Cai B,&Chen ZM.(2004).The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis.JOURNAL OF FRESHWATER ECOLOGY,19(2),255-262.
MLA	Chen YF,et al."The reproductive strategies of an endemic Tibetan fish, Gymnocypris selincuoensis".JOURNAL OF FRESHWATER ECOLOGY 19.2(2004):255-262.

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