Biotechnology Bulletin ›› 2016, Vol. 32 ›› Issue (2): 192-197.doi: 10.13560/j.cnki.biotech.bull.1985.2016.02.026

• Research report • Previous Articles     Next Articles

Genetic Structure Analysis of Macrobrachiu rosenbergii with Different Developmental Rate at Larval Stage

DAI Xi-lin1, GAO Xiang1, WANG Hai-yang1, MING Lei1, JIANG Zong-bing1, DING Fu-jiang2   

  1. (1.Key Laboratory of Freshwater Aquatic Genetic Resources of Ministry of Agriculture,Shanghai Ocean University,Shanghai 201306;2.Shanghai Shencao Special Fisheries Development Corps,Shanghai 201516)
  • Received:2015-04-30 Online:2016-02-24 Published:2016-02-25

Abstract: In order to investigate the causes of asynchronization of development rate and the difference of growth for Macrobrachium rosenbergii larvae from the perspective of molecular biology, the genetic diversity and variation of M. rosenbergii with different larval development rates of 5 groups were analyzed.The results showed that 57 alleles among 5 groups were detected with 8 pairs of microsatellite primers.Numbers of alleles(Na)of each microsatellite ranged from 5 to 10, the genetic diversity of M.rosenbergii population among 5 groups had no significant differences.Meanwhile, the genetic differentiation coefficient and genetic distance between two populations were very close, indicating that genetic differentiation of M.rosenbergii with different larval development rate among 5 groups mainly resulted from the genetic differences among individuals.Combining with the prior researches, this study revealed that the causes of asynchronization of development rate and the difference of growth for M.rosenbergii larvae were not genetic variation and environmental differences.

Key words: Macrobrachium rosenbergii, larval development rate, genetic diversity, genetic variation