Genetic diversity, spatial connectivity, and population structure of Asian silurid catfish Wallago attu (Bloch and Schneider, 1801) in the Ganga River System: insights from mitochondrial DNA analysis.
Wallago attu
Ganga river system
Genetic diversity
Mitochondrial DNA
Population genetic structure
Journal
Molecular biology reports
ISSN: 1573-4978
Titre abrégé: Mol Biol Rep
Pays: Netherlands
ID NLM: 0403234
Informations de publication
Date de publication:
01 Mar 2024
01 Mar 2024
Historique:
received:
07
12
2023
accepted:
06
02
2024
medline:
1
3
2024
pubmed:
1
3
2024
entrez:
1
3
2024
Statut:
epublish
Résumé
The Ganga River System (GRS) is a biodiversity hotspot, its ecological richness is shaped by a complex geological history. In this study, we examined the genetic diversity, spatial connectivity, and population structure of the Asian Silurid catfish, Wallago attu, across seven tributaries of the GRS. We employed three mitochondrial DNA (mtDNA) regions: cytochrome c oxidase subunit I (COXI), cytochrome b (Cyt b), and control region (CR). Our comprehensive dataset encompassed 2420 bp of mtDNA, derived from 176 W. attu individuals across 19 sampling sites within the seven rivers of GRS. Our findings revealed high gene diversity (Hd:0.99) within W. attu populations. Analysis of Molecular Variance (AMOVA) highlighted that maximum genetic variations were attributed within the populations, and the observed genetic differentiation among the seven populations of W. attu ranged from low to moderate. Network analysis uncovered the presence of three distinct genetic clades, showing no specific association with seven studied rivers. Bayesian skyline plots provided insights into the demographic history of W. attu, suggesting a recent population expansion estimated to have occurred approximately 0.04 million years ago (mya) during the Pleistocene epoch. These results significantly enhance our understanding of the genetic diversity and spatial connectivity of W. attu, serving as a vital foundation for developing informed conservation strategies and the sustainable management of this economically valuable resource within the Ganga River System.
Sections du résumé
BACKGROUND
BACKGROUND
The Ganga River System (GRS) is a biodiversity hotspot, its ecological richness is shaped by a complex geological history. In this study, we examined the genetic diversity, spatial connectivity, and population structure of the Asian Silurid catfish, Wallago attu, across seven tributaries of the GRS.
METHODS AND RESULTS
RESULTS
We employed three mitochondrial DNA (mtDNA) regions: cytochrome c oxidase subunit I (COXI), cytochrome b (Cyt b), and control region (CR). Our comprehensive dataset encompassed 2420 bp of mtDNA, derived from 176 W. attu individuals across 19 sampling sites within the seven rivers of GRS. Our findings revealed high gene diversity (Hd:0.99) within W. attu populations. Analysis of Molecular Variance (AMOVA) highlighted that maximum genetic variations were attributed within the populations, and the observed genetic differentiation among the seven populations of W. attu ranged from low to moderate. Network analysis uncovered the presence of three distinct genetic clades, showing no specific association with seven studied rivers. Bayesian skyline plots provided insights into the demographic history of W. attu, suggesting a recent population expansion estimated to have occurred approximately 0.04 million years ago (mya) during the Pleistocene epoch.
CONCLUSIONS
CONCLUSIONS
These results significantly enhance our understanding of the genetic diversity and spatial connectivity of W. attu, serving as a vital foundation for developing informed conservation strategies and the sustainable management of this economically valuable resource within the Ganga River System.
Identifiants
pubmed: 38427103
doi: 10.1007/s11033-024-09323-w
pii: 10.1007/s11033-024-09323-w
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
378Subventions
Organisme : National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India
ID : B-03/2015-16/1077/NMCG
Organisme : National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India
ID : B-03/2015-16/1077/NMCG
Organisme : National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India
ID : B-03/2015-16/1077/NMCG
Organisme : National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India
ID : B-03/2015-16/1077/NMCG
Organisme : National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India
ID : B-03/2015-16/1077/NMCG
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer Nature B.V.
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