华北农学报 ›› 2005, Vol. 20 ›› Issue (4): 79-83. doi: 10.3321/j.issn:1000-7091.2005.04.020

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西藏拉果错卤虫线粒体DNA遗传多样性的研究

王晓梅1,2, 辛乃宏3, Peter Bossier1   

  1. 1. 比利时根特大学水产养殖实验室暨卤虫参考中心, 根特市 9000;
    2. 天津农学院水产科学系暨天津市水产生态及养殖重点实验室, 天津 300384;
    3. 轻工总会制盐研究所, 天津 300450
  • 收稿日期:2005-02-28 出版日期:2005-08-28
  • 作者简介:王晓梅(1962- ),女,天津人,副教授,博士,主要从事动物分子系统学的研究工作。
  • 基金资助:
    中国与比利时双边国际合作项目

Study on Mitochondrial DNA Diversity of the Brine Shrimp Artemia in Lagkor Co Lake of Tibet, China

WANG Xiao-mei1,2, XIN Nai-hong3, Peter Bossier1   

  1. 1. Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Ghent 9000, Belgium;
    2. Key Laboratory of Aquatic Ecology and Aquaculture of Tianjin, Department of Fisheries Science, Tianjin Agricultural University, Tianjin 300384, China;
    3. Salt Research Institute, China National Council of Light Industry, Tianjin 300450, China
  • Received:2005-02-28 Published:2005-08-28

摘要: 对西藏拉果错卤虫线粒体12S-16S rDNA片段进行了限制性片段长度多态性(RFLP)分析。对两个样本ARC1347和ARC1348分别分析了40和31个个体。应用PCR技术扩增了卤虫单个休眠卵的线粒体12S-16S rDNA,选用能识别四碱基的限制性内切酶HpaⅡ、NdeⅡ、TaqⅠ和HaeⅢ对该基因片段进行RFLP分析。在两个样本中均各检测出5种单倍型,其中单倍型AAAA为两个群体所共有,并均以该单倍型为主,它的个体数所占的百分比在两个群体(ARC1347和ARC1348)中分别为85.0%和83.9%。ARC1347号样本各单倍型之间的平均遗传距离为0.0350,ARC1348号样本各单倍型间的平均遗传距离为0.0121;ARC1347和ARC1348样本的线粒体12S-16S rDNA的多态度(或称核苷酸多样性指数)π值分别为0.0052和0.0013。结果说明,西藏拉果错卤虫具有一定的群体内遗传多样性。

关键词: 西藏拉果错卤虫, 休眠卵, 线粒体12S-16SrDNA, 遗传多样性, 单倍型

Abstract: The brine shrimp Artemia cysts used in this study were sampled from Lagkor Co Lake of Tibet of People's Republic of China in 1996 and 1997.It was named Artemia tibetiana.Polymorphisms of mitochondrial 12S-16S rDNA fragment were screened by using PCR-RFLP methods.The 1 500 bp fragments of mitochondrial 12S-16S rDNA were amplified on single cysts.The PCR products were digested with four restriction endonuclease recognizing four base-pair,Hpa Ⅱ,Nde Ⅱ,Taq Ⅰand Hae Ⅲ.The results showed that there were 5 haplotypes in each sample,namely,ARC1347 and ARC1348.The haplotype,AAAA was shared by both populations and had high percentage,85.0% and 83.9% respectively,in ARC1347 and ARC1348 sample.The mean genetic distance between haplotypes and the index of nucleotide diversity(π value) were 0.0350 and 0.0052 respectively,in the sample ARC1347,while the average genetic distance between haplotypes and π value were 0.0121 and 0.0013 respectively,in the sample ARC1348.There were 9 haplotypes in the two populations.The results indicated that the genetic diversity existed within the population of Artemia Tibetiana from Lagkor Co Lake of Tibet,China.

Key words: Artemia tibetiana, Cyst, Mitochondrial 12S-16S rDNA, Genetic diversity, Haplotype

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引用本文

王晓梅, 辛乃宏, Peter Bossier. 西藏拉果错卤虫线粒体DNA遗传多样性的研究[J]. 华北农学报, 2005, 20(4): 79-83. doi: 10.3321/j.issn:1000-7091.2005.04.020.

WANG Xiao-mei, XIN Nai-hong, Peter Bossier. Study on Mitochondrial DNA Diversity of the Brine Shrimp Artemia in Lagkor Co Lake of Tibet, China[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(4): 79-83. doi: 10.3321/j.issn:1000-7091.2005.04.020.

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