JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editorial Board
    Reviewer Panel
    RnD Division
    Subscription Info
    Contact Journal
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Authoring Guidelines
    Publication Process
    Track Paper Status
 

Search the Journal web-site through Google:


        Abstract - Issue Sep 2015, 36 (5)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Genetic differentiation of wild and hatchery populations of

Indian major carp Cirrhinus cirrhosus in Bangladesh

 

Md. Rajib Sharker1, Muhammad Abu Bakar Siddik1*, Ashfaqun Nahar2 , Md. Shahjahan3,4 and Abdullah Al Faroque5

1Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh

2Department of Marine Fisheries and Oceanography, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh

3Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata-952-2135, Japan

4Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

5Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

*Corresponding Author E-mail: siddik@pstu.ac.bd

 

 

 

Publication Data

Paper received:

20 October 2014

 

Revised received:

17 April 2015

 

Accepted:

05 June 2015

 

Abstract

Genetic differentiation of Cirhinus cirrhosus, three river (Halda, Jamuna and Padma) and six hatchery (Brahmaputra, Reliance, Kazi, Rupali, Bismillah and Pacific) populations covering a wide range of geographical distribution of this species were analyzed by allozyme electrophoresis. Four enzymes encoded by 7 loci were screened, where 3 loci were polymorphic (Mdh-1*, Mdh-2*, Gpi-1*). The results showed that polymorphic loci per population (28.57%), mean proportion of heterozygous loci per individual (10.000), mean number of alleles per locus (1.286), and relative gene diversity (0.148) in river populations were higher than those for hatchery populations (23.81, 6.677, 1.238, 0.140, respectively). Also, the observed heterozygosity (Ho) and expected heterozygosity (He) in river populations (0.086 and 0.112, respectively) were higher than those of hatchery populations (0.046 and 0.106, respectively). The pairwise population differentiation (FST) values showed a lower level of genetic differentiation between hatchery and river population pairs. The unweighted pair-group method with arithmetic mean dendrogram of Nei's genetic distances showed relationship between genetic distance and geographic distance. Population were clustered into three groups: Halda, Padma and Jamuna river population in one group; Brahmaputra, Reliance and Kazi hatchery populations in second group and Rupali, Bismillah and Pacific hatchery population in third group. The present study revealed that there were obvious genetic variations among the natural and hatchery populations. ???   

 

 

 Key words

Allozyme electrophoresis, Allele frequency, Genetic diversity, Polymorphic loci

 

 

Copyright ? 2015 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).