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Biogeographic Insights From a Genomic Survey of Salmo Trouts From the Aralo-Caspian Regions Publisher



Hashemzadeh Segherloo I1, 2 ; Tabatabaei SN2 ; Abdoli A3 ; Freyhof J4 ; Normandeau E2 ; Levin B5, 6, 7 ; Geiger MF8 ; Laporte M2, 9 ; Hallerman E10 ; Bernatchez L2
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Authors Affiliations
  1. 1. Department of Fisheries and Environmental Sciences, Faculty of Natural Resources and Earth Sciences, ShahreKord University, Shahr-e-Kord, Iran
  2. 2. Institut de Biologie Integrative et des Systemes (IBIS), Universite Laval, Quebec, G1V 0A6, Canada
  3. 3. Department of Biodiversity and Ecosystem Management, Environmental Research Institute, University of Shahid Beheshty, G.C. Velenjak, Tehran, Iran
  4. 4. Museum Fur Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, 10115, Germany
  5. 5. Papanin Institute of Biology of Inland Waters, Russian Academy of Sciences, Borok, Yaroslavl Region, Russian Federation
  6. 6. A.N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Moscow, 119071, Russian Federation
  7. 7. Cherepovets State University, Vologda Region, Cherepovets, Russian Federation
  8. 8. Museum Koenig Bonn, Leibniz Institute for the Analysis of Biodiversity Change, Bonn, 53133, Germany
  9. 9. Ministere des Forets, de la Faune et des Parcs (MFFP) du Quebec, Quebec, QC, Canada
  10. 10. Department of Fish and Wildlife Conservation, Virginia Polytechnic Institute and State University, Blacksburg, 24061, VA, United States

Source: Hydrobiologia Published:2022


Abstract

The eastern-most members of the Salmo trutta species complex in the Aralo-Caspian Sea region were studied to infer their population genetic structure and biogeographic origin. A total of 68 individuals collected from Iranian endorheic inland basins (Namak and Urmia lakes), tributaries of the Caspian (Haraz, Kura, Samur, Volga, and Ural river drainages) and Aral (Amu River) seas, and the Baltic Sea basin were genotyped using 26,202 SNPs via Genotyping-by-Sequencing. The data were analyzed using admixture, discriminant analysis of principal components (DAPC), analysis of molecular variance (AMOVA), species tree, genetic differentiation (FST), allele frequency difference (AFD), and neighbor network approaches. Trout in the southern Caspian Sea basin differ from those of the western and northern Caspian Sea. Based on our results, the Lake Namak trout is divergent from the southern and western Caspian trout populations. Aral Sea and Lake Namak trouts likely originated from the northern and southern Caspian Sea populations, respectively. Although only few populations were considered in this study, six conservation/management units of trouts are proposed. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
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