Bottleneck in the endangered kalibaus, Labeo calbasu (cyprinidae: cypriniformes) populations in Bangladesh revealed by microsatellite DNA marker analysis
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Microsatellite DNA marker analysis was carried out to assess the population genetic structure of an endangered carp, Labeo calbasu, collected from three different stocks; the Jamuna River, the Halda River and a Hatchery. Four heterologous microsatellite loci (Lr12, Lr14b, Lr21 and Lr24) identified from rohu (Labeo rohita) were analyzed to test the genetic variability of the target kalibaus stocks. The maximum number of alleles observed in loci Lr12, Lr14b, Lr21 and Lr24 were 10, 7, 8 and 6, respectively. The loci were found to be polymorphic (<P 95) in all the populations. The average number of allele was highest in the Jamuna population (6.75) followed by that of the Halda (5.50) and the Hatchery population (4.25). The observed average heterozygosity (Ho) value was almost similar in all three populations. Except locus Lr12 in the Halda population, significant deviations from the Hardy-Weinberg Equilibrium were detected in all cases due to excess heterozygosity. The population differentiation values (F ST ) between all the population pairs were significant. The highest genetic distance value (D = 0.295) was measured between the Halda and the Hatchery populations. A recent bottleneck was observed in the Halda and the Hatchery population.
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- Bottleneck in the endangered kalibaus, Labeo calbasu (cyprinidae: cypriniformes) populations in Bangladesh revealed by microsatellite DNA marker analysis
Genes & Genomics
Volume 32, Issue 1 , pp 47-53
- Cover Date
- Print ISSN
- The Genetics Society of Korea
- Additional Links
- Labeo calbasu
- Endangered species
- Genetic variation
- Microsatellite marker
- Author Affiliations
- 1. Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- 2. Department of Biotechnology, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh