Abstract
Genetic diversity of threeAristichthys nobilis populations and one inbreeding stock was studied using random amplified polymorphic DNA (RAPD) method. Materials of natural populations were collected from two counties of Guangxi Province, Hengxian (NH) and Shanglin (NS) and one city of Hubei Province, Wuhan city. (NW). Shanglin and Hengxian's river system respectively belongs to Qianjiang and Yujiang River, two tributaries confluencing to Xunjiang River, main tributary of Xijiang River, which is the biggest tributary of the Zhujiang River system, and Wuhan's water system belongs to the Yangtse River system. The inbreeding stock (RS) was the more than 10 generation descendant by brother-sister mating system whose parents were collected from Shanglin. The results showed that the genetic variety of individuals of RS was very low (0.105 4), whereas that of natural populations was relatively high, which from high to low was 0.158 1 (NW), 0.132 0 (NH) and 0.110 5 (NS). As an index for genetic distance pair-wise populations, the genetic variety between populations was studied, which characterized the genetic distance between populations. The genetic distance of NW and NH, NW and NS, NW and RS were respectively high, whereas that of NH and NS, NS and RS, NH and RS was low. Chi-test (χ 2) and the analysis of the genetic variety pair-wise populations was taken as efficient approach for studying population difference.
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Foundation item: Supported by the National Ninth-Five Research Program (No. 96-08010301), and Species Resource and Biotech of Freshwater Fish Pivot Laboratory of Agriculture Ministry
Biography: Wang He(1978-), male, Master, research direction: molecular genetic markers in fish
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He, W., Feng-jiao, D., Lai-ning, Y. et al. Genetic diversity of threeAristichthys nobilis populations and one inbreeding stock. Wuhan Univ. J. Nat. Sci. 7, 243–247 (2002). https://doi.org/10.1007/BF02830327
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DOI: https://doi.org/10.1007/BF02830327