Conservation genetics assessment and phylogenetic relationships of critically endangered Hucho bleekeri in China
文献类型： 外文期刊
作者： Wang, K. 1 ; Zhang, S. -H. 2 ; Wang, D. -Q. 2 ; Wu, J. -M. 2 ; Wang, C. -Y. 2 ; Wei, Q. -W. 1 ;
作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi, Peoples R China
2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, 8,1st Wudayuan Rd, Wuhan 430223, Peoples R China
期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： Hucho bleekeri is a critically endangered salmonid fish found in the Yangtze River drainage in China. In this study, the genetic diversity of a small population (n=43) was first assessed with partial mitochondrial DNA sequences (D-loop region and a cytochrome b gene [CYTB] gene fragment) and 15 microsatellite markers. Low levels of nucleotide diversity (Pi) were demonstrated in the H.bleekeri population based on the two mitochondrial DNA markers. The number of haplotypes (h) and the haplotype diversity (Hd) in the D-loop region (12 haplotypes and Hd=0.8208) were higher than in the CYTB gene fragment (three haplotypes and Hd=0.0941). The number of microsatellite alleles (Na) ranged from 2 to 13 in these individuals. The mean observed heterozygosity (Ho) and the expected heterozygosity (He) were 0.59719 and 0.44735, respectively. Analysis of molecular variance showed that the degree of differentiation in the population was low (F-ST=0.04041) and the coefficient of inbreeding (F-IS) was negative, indicating no obvious evidence of inbreeding in this population. A demographic assessment suggested that this species expanded a long time ago, but has suffered great losses in recent years. A molecular phylogenetic analysis clearly indicated that H.bleekeri is not introgressed by Brachymystax lenok tsinlingensis. The baseline population genetic information supplied by this study will be vital in monitoring this highly threatened species.
- 相关文献
作者其他论文 更多>>
-
Dietary folic acid (FA) requirement of a genetically improved Nile tilapia Oreochromis niloticus (Linnaeus, 1758)
作者：Wu, J. -P.;Wu, F.;Jiang, M.;Wen, H.;Wei, Q. -W.;Liu, W.;Tian, J.;Huang, F.;Yang, C. -G.
关键词：
-
Measuring fish length and assessing behaviour in a high-biodiversity reach of the Upper Yangtze River using an acoustic camera and echo sounder
作者：Lin, D. -Q.;Wei, Q. -W.;Lin, D. -Q.;Zhang, H.;Wei, Q. -W.;Kang, M.
关键词：
-
Large-scale cultivation of fingerlings of the Chinese Sturgeon Acipenser sinensis for re-stocking: a description of current technology
作者：Zhu, Y.;Wei Q.;Yang, D.;Wang, K.;Chen, X.;Liu, J.;Li, L.
关键词：
-
Identification of key nutrients for gonadal development by comparative analysis of proximate composition and fatty/amino acid profile in tissues and eggs of Chinese sturgeon (Acipenser sinensis Gray, 1835)
作者：Zhou, H.;Tan, Q. -S.;Liang, X. -F.;Leng, X. -Q.;Du, H.;Wu, J. -P.;Wei, Q. -W.
关键词：
-
Observations on gonadal development of 7-11 year old Chinese sturgeon Acipenser sinensis cultured in freshwater
作者：Chen, X. -H.;Zhang, Y. -Z.;Wei, Q. -W.;Liu, Z. -G.;Li, L. -X.;Qiu, S.
关键词：gonadal development
-
Hydroacoustic study of spatial and temporal distribution of Gymnocypris przewalskii (Kessler, 1876) in Qinghai Lake, China
作者：Chen, D.;Zhang, X.;Wang, K.;Chang, Y.;Chen, D.;Wang, K.;Zhang, X.;Tan, X.;Qiao, Y.
关键词：feeding;species distribution;life history;spawning;over-wintering;spatial and temporal distribution;hydroacoustic study
-
Sensory variability in Chinese sturgeon in relation to fish feeding experience on formulated diets
作者：Liang, X. -F.;Wen, H.;Wei, Q. -W.;Liang, X. -F.;Wen, H.;Wei, Q. -W.;Xiao, H.;Wen, H.;Wei, Q. -W.
关键词：olfaction;feeding behaviour;formulated diet;chemoreception;feeding performance;individual variation;sensory variability;oral gustation
