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学科主题: Fisheries; Marine & Freshwater Biology
题名: Microsatellites assessment of Chinese sturgeon (Acipenser sinensis Gray) genetic variability
作者: Zhao, N; Ai, W; Shao, Z; Zhu, B; Brosse, S; Chang, J
通讯作者: Chang, J, Chinese Acad Sci, Inst Hydrol, Wuhan 430072, Peoples R China
关键词: SCAPHIRHYNCHUS ; POPULATIONS ; INHERITANCE ; LOCI ; DIVERSITY ; MARKERS ; FISHES ; WILD ; DNA
刊名: JOURNAL OF APPLIED ICHTHYOLOGY
发表日期: 2005-02-01
卷: 21, 期:1, 页:7-13
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Inst Hydrol, Wuhan 430072, Peoples R China; Minist Agr, Marine & Estuarine Fisheries, Shanghai, Peoples R China; Univ Toulouse 3, CNRS, LADYBIO, F-31062 Toulouse, France
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Fisheries ; Marine & Freshwater Biology
研究领域[WOS]: Fisheries ; Marine & Freshwater Biology
摘要: Four microsatellites were used to examine the genetic variability of the spawning stocks of Chinese sturgeon, Acipenser sinensis, from the Yangtze River sampled over a 3-year period (1999-2001). Within 60 individuals, a total of 28 alleles were detected over four polymorphic microsatellite loci. The number of alleles per locus ranged from 4 to 15, with an average allele number of 7. The number of genotypes per locus ranged from 6 to 41. The genetic diversity of four microsatellite loci varied from 0.34 to 0.67, with an average value of 0.54. For the four microsatellite loci, the deviation from the Hardy-Weinberg equilibrium was mainly due to null alleles. The mean number of alleles per locus and the mean heterozygosity were lower than the average values known for anadromous fishes. Fish were clustered according to their microsatellite characteristics using an unsupervised 'Artificial Neural Networks' method entitled 'Self-organizing Map'. The results revealed no significant genetic differentiation considering genetic distance among samples collected during different years. Lack of heterogeneity among different annual groups of spawning stocks was explained by the complex age structure (from 8 to 27 years for males and 12 to 35 years for females) of Chinese sturgeon, leading to formulate an hypothesis about the maintenance of genetic diversity and stability in long-lived animals.
英文摘要: Four microsatellites were used to examine the genetic variability of the spawning stocks of Chinese sturgeon, Acipenser sinensis, from the Yangtze River sampled over a 3-year period (1999-2001). Within 60 individuals, a total of 28 alleles were detected over four polymorphic microsatellite loci. The number of alleles per locus ranged from 4 to 15, with an average allele number of 7. The number of genotypes per locus ranged from 6 to 41. The genetic diversity of four microsatellite loci varied from 0.34 to 0.67, with an average value of 0.54. For the four microsatellite loci, the deviation from the Hardy-Weinberg equilibrium was mainly due to null alleles. The mean number of alleles per locus and the mean heterozygosity were lower than the average values known for anadromous fishes. Fish were clustered according to their microsatellite characteristics using an unsupervised 'Artificial Neural Networks' method entitled 'Self-organizing Map'. The results revealed no significant genetic differentiation considering genetic distance among samples collected during different years. Lack of heterogeneity among different annual groups of spawning stocks was explained by the complex age structure (from 8 to 27 years for males and 12 to 35 years for females) of Chinese sturgeon, leading to formulate an hypothesis about the maintenance of genetic diversity and stability in long-lived animals.
关键词[WOS]: SCAPHIRHYNCHUS ; POPULATIONS ; INHERITANCE ; LOCI ; DIVERSITY ; MARKERS ; FISHES ; WILD ; DNA
语种: 英语
WOS记录号: WOS:000226962800003
ISSN号: 0175-8659
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9318
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 Sci, Inst Hydrol, Wuhan 430072, Peoples R China
2.Minist Agr, Marine & Estuarine Fisheries, Shanghai, Peoples R China
3.Univ Toulouse 3, CNRS, LADYBIO, F-31062 Toulouse, France

Recommended Citation:
N. Zhao; W. Ai; Z. Shao; B. Zhu; S. Brosse and J. Chang.Microsatellites assessment of Chinese sturgeon (Acipenser sinensis Gray) genetic variability,JOURNAL OF APPLIED ICHTHYOLOGY,2005,21(1):7-13
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