生物技术通报 ›› 2016, Vol. 32 ›› Issue (2): 192-197.doi: 10.13560/j.cnki.biotech.bull.1985.2016.02.026

• 研究报告 • 上一篇    下一篇

幼体发育速度不同的罗氏沼虾遗传结构分析

戴习林1, 高翔1, 王海洋1, 明磊1, 江宗冰1, 丁福江2   

  1. 1.上海海洋大学 农业部淡水水产种质资源重点实验室,上海 201306;2.上海申漕特种水产开发公司,上海 201516
  • 收稿日期:2015-04-30 出版日期:2016-02-24 发布日期:2016-02-25
  • 作者简介:戴习林,男,博士,教授,研究方向:水产养殖与海洋生物学;E-mail:xldai@shou.edu.cn
  • 基金资助:
    上海市虾类产业技术体系项目(沪农科产字(2014)第5号),上海市农业领军人才计划(D8004140243),上海市科委重点攻关项目(11391901400)

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 Published:2016-02-24 Online:2016-02-25

摘要: 旨在从分子生物学角度探讨造成罗氏沼虾幼体期发育速度不同步和生长差异的原因,利用8对微卫星引物对5组幼体发育速度不同的罗氏沼虾群体进行遗传多样性和遗传变异分析。结果显示,8对微卫星引物在5组罗氏沼虾群体中共检测到57个等位基因,各微卫星座位的等位基因数(Na)分别在5-10个之间,5组罗氏沼虾群体的遗传多样性无明显差异,同时两两群体间的遗传分化系数和遗传距离亦非常接近,均说明5组幼体发育速度不同的罗氏沼虾群体的遗传分化主要来自于个体间遗传差异。结合前期研究表明导致罗氏沼虾幼体发育速度的不同步和生长差异的原因并非遗传变异和环境差异。

关键词: 罗氏沼虾, 幼体发育速度, 遗传多样性, 遗传变异

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