Biodiversity Science ›› 2001, Vol. 09 ›› Issue (3): 241-246.doi: 10.17520/biods.2001037

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Isozyme variation in four populations of Penaeus chinensis shrimp

WANG Wei-Ji1 , KONG Jie1 , BAO Zhen-Min2 , DENG Jing-Yao1 , ZHUANG Zhi-Meng1   

  1. 1 Yellow Sea Fisheries Research Institute , Qingdao 266071
    2 Marine Life College , Ocean University of Qingdao , Qingdao 266003
  • Online:2001-08-20
  • WANG Wei-Ji

Horizontal starch gel elect rophoresis was used to investigate the isozyme genetic variation in Penaeus chinensis shrimp. Each 50 individuals from two wild geographic populations dist ributed in the China Coast of the Yellow Sea ( YP) and the western coast of Korean Peninsula ( KP) , and from two cultivated populations (CP1 and CP2) were surveyed. Of 20 loci encoding 12 enzymes , four are polymorphic. The mean proportions of polymorphic loci ( P0. 99) of YP , KP , CP1 and CP2 are 15 % , 20 % , 10 % and 20 % with the average heterozygosities ( Ho) of 0. 014 ±0. 007 , 0. 020 ±0. 010 , 0. 010 ±0. 007 and 0. 033 ±0. 017 , respectively. The mean effective allele number ( Ne) of these four populations are 1. 015 ±0. 008 , 1. 023 ±0. 011 , 1. 011 ±0. 007 and 1. 042 ±0. 022 while the heterozygous divergent indexes ( D) of them value + 0. 037 , - 0. 030 , - 0. 098 and - 0. 030 , respectively. The genetic similarity index ( I) and genetic distance ( Dnei) between two wild geographic populations are 0. 99998 and 0. 00002 , respectively.

Key words: Chinese River Dolphin, VORTEX model, population viability analysis, wildlife management

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