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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jgen/095/02/0369-0376

    • Keywords

       

      microsatellite loci; expected heterozygosity; giant grouper; genetic relationship

    • Abstract

       

      The giant grouper (Epinephelus lanceolatus) is a coral fish with high commercial value in Southeast Asia. In the present study, we isolated 11 microsatellite DNA markers, and analysed the genetic diversity and differentiation between cultured stocks and wild populations of the giant grouper originating from the South China Sea. A total of 390 alleles at 11 microsatellite loci were detected in 130 individuals from five different populations. The expected heterozygosity varied from 0.131 to 0.855 with a mean value of 0.623 and the observed heterozygosity varied from 0.145 to 0.869 with a mean value of 0.379. The allelic richness and heterozygosity studies revealed that the genetic diversity of the cultured population was significantly reduced when compared with that of the wild population. The Fis,pairwise Fst values, analysis of molecular variance (AMOVA), three- dimensional factorial correspondence analysis and structure analysis revealed significant population differentiation between the cultured stocks and the wild populations, among the three cultured populations and between the two wild populations. These differences may be caused by random genetic drift, the effects of artificial selection and founder effects. Our results will be useful in the management of cultured stocks and conservation of wild populations of the giant group

    • Author Affiliations

       

      QING WANG1 XIANG WANG1 ZHENZHEN XIE1 YIQ ILI1 LING XIAO1 CHENG PENG1 HAIFA ZHANG2 SHUISHENG LI1 YONG ZHANG1 2 3 HAORAN LIN1 2 4

      1. State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, G uangzhou 510275, People’s Republic of China
      2. South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510275, People’s Republic of China
      3. Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, People’s Republic of China
      4. College of Ocean, Hainan University, Haikou 570228, People’s Republic of China
    • Dates

       
  • Journal of Genetics | News

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