Population Genetic Structure of Paradise Threadfin Polynemus paradiseus (Linnaeus, 1758) Revealed by Allozyme Marker

• Published in: International journal of zoological research Vol. 11; no. 2; p. 48
• Main Authors: Nahar, Ashfaqun, Siddik, M A B, Alam, M A, Chaklader, M R
• Format: Journal Article
• Language: English
• Published: 2015
• Subjects: Polynemus
• ISSN: 1811-9778; 1811-9786
• DOI: 10.3923/ijzr.2015.48.56

To elucidate genetic differentiation in three river populations (Tentulia, Paira and Kirtonkhola) of Polynemus paradiseus, ten enzymes encoded by seventeen presumptive loci were screened using allozyme electrophoresis marker, where five were polymorphic. The mean proportions of polymorphic loci were observed 17.65, 29.41 and 11.76% in Tentulia, Paira and Kirtonkhola populations, respectively. The highest mean number of allele per locus and mean proportion of heterozygous loci per individual were observed in the Paira population (1.294 and 16.667%, respectively). The highest observed heterozygosity and average expected heterozygosity were 0.078 and 0.050, respectively found in Tentulia population. The highest pair-wise population differentiation (FST = 0.148) and lowest gene flow (Nm = 1.443) were found in Tentulia-Kirtonkhola indicate the close relationship among them. Based on genetic distance, UPOMA dendrogram showed that the three river populations of P. paradiseus constructed two clusters. Paira and Kirtonkhola populations made one cluster (D = 0.001) and separated from Tentulia population by the genetic distance of 0.014.