Abstract
The Silond catfish Silonia silondia, locally known as Nga Myin Yinn, is a commercially important fish in Myanmar; however, fundamental knowledge of its population structure is insufficient. Specimens caught in different regions of the Ayeyarwady River, the basin of which is the country’s largest, from 2017 to 2019 were used to sequence two mitochondrial (mt)DNA genes, cytochrome b and ATPase 6/8, for investigating population differentiation. Phylogenetic trees and pairwise fixation index values revealed that the populations of S. silondia differed between Myanmar and Bangladesh/India, whereas the populations and mtDNA haplotypes were not significantly different among four regions of the Ayeyarwady River (Ayeyarwady, Yangon, Magway, and Mandalay). In addition, no unique haplotype was observed, given the lack of nucleotide diversity. Thus, S. silondia in the Ayeyarwady River can be considered a single population, which is different from those of Bangladesh/India. Our study provides the first content for understanding the genetic diversity of S. silondia in the Ayeyarwady River in Myanmar according to molecular analyses. These genetic data will be useful for understanding the genetic diversity of this species in South and Southeast Asia.
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Acknowledgements
This research was funded by the Heiwa Nakajima Foundation and the Japan International Corporation Agency (JICA). We are grateful to the members of the Ministry of Agriculture, Livestock and Irrigation, Department of Fisheries, for their kind cooperation in collecting the samples and transferring them to Japan. We are grateful to the Rector and Pro-Rectors at University of Yangon for their support. We are also grateful to the editors and anonymous reviewers for their constructive comments and suggestions.
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Soe, T.T., Thwe, T.L., Aye, P.T. et al. Population structure of Nga Myin Yinn Silonia silondia in the Ayeyarwady River, Myanmar, by mitochondrial DNA markers. Fish Sci 87, 311–320 (2021). https://doi.org/10.1007/s12562-021-01499-5
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DOI: https://doi.org/10.1007/s12562-021-01499-5