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Atal Saha

Postdoctoral Fellow
Department of Natural Sciences
Phone
+47 38142685
Office J2002A (Universitetsveien 25, 4630 Kristiansand, Norway)

Areas of responsibility

I am a Post-Doctoral Research Fellow in population genomics at Centre for Coastal Research (CCR), affiliated to the Department of Natural Sciences, University of Agder, Norway.

My current project is about evolutionary and ecological genomics of marine species in Norwegian coastal waters. My research activities primarily involve bioinformatic and statistical analyses of genomic data from NGS sequencing (e.g. ddRAD) coupled with environmental and biological data, for the study of marine ecology and evolution. 

Previously, I did a postdoc at Stockholm University (in the Division of Population Genetics) investigating genomic dynamics over space and time in salmonid (brown trout and Arctic char) metapopulations. My project was based on data from individual whole-genome sequencing and pool-sequencing of groups of individuals. In this work, we studied cryptic sympatry, genetic changes over time, local adaptation, hybridization and introgression in salmonids from mountain freshwater lake systems in Sweden.

In my PhD project, I investigated genetic population structure, cryptic speciation, hybridization and local adaptation, mainly in redfish (plus saithe and Greenland halibut) from the North Atlantic. Analysing data from microsatellite DNA and SNP markers, I found evidence of significant genetic population structure in beaked redfish, saithe and Greenland halibut. My data supported three novel cryptic species in golden redfish complex. A low but statistically significant extent of introgession was estimated in redfish. I also found an indication of local adaptation in groups of beaked redfish. I defended my PhD at University of Tromso and the project was coordinated by the Norwegian Institute of Marine Research (IMR). During my PhD period, I had a PhD internship at University of Washington. After completion of my PhD, I worked as a research assistant at IMR for a year.

As it is evident, my main research interest is to apply population genomic tools to support sustainable management and conservation of aquatic species.

Publications

  • Saha, Atal; Kurland, Sara; Kutschera, Verena E.; Díez-del-Molino, David; Ekman, Diana & Ryman, Nils [Show all 7 contributors for this article] (2024). Monitoring genome-wide diversity over contemporary time with new indicators applied to Arctic charr populations. Conservation Genetics. ISSN 1566-0621. doi: 10.1007/s10592-023-01586-3.
  • Kurland, Sara; Saha, Atal; Keehnen, Naomi; de la Paz Celorio-Mancera, Maria; Díez-del-Molino, David & Ryman, Nils [Show all 7 contributors for this article] (2023). New indicators for monitoring genetic diversity applied to alpine brown trout populations using whole genome sequence data. Molecular Ecology. ISSN 0962-1083. doi: 10.1111/mec.17213. Full text in Research Archive
  • Myksvoll, Mari Skuggedal; Devine, Jennifer Ann; Quintela, Maria; Geffen, Audrey J.; Nash, Richard David Marriott & Sandvik, Anne Dagrun [Show all 12 contributors for this article] (2021). Linking dispersal connectivity to population structure and management boundaries for saithe in the Northeast Atlantic. Marine Ecology Progress Series. ISSN 0171-8630. 680, p. 177–191. doi: 10.3354/meps13862. Full text in Research Archive
  • Saha, Atal; Andersson, Anastasia; Kurland, Sara; Keehnen, Naomi L. P.; Kutschera, Verena E. & Hössjer, Ola [Show all 13 contributors for this article] (2021). Whole-genome resequencing confirms reproductive isolation between sympatric demes of brown trout (Salmo trutta) detected with allozymes. Molecular Ecology. ISSN 0962-1083. doi: 10.1111/mec.16252. Full text in Research Archive
  • Saha, Atal; Kent, Matthew Peter; Hauser, Lorenz; Drinan, Daniel P.; Nielsen, Einar E. & Westgaard, Jon-Ivar [Show all 8 contributors for this article] (2021). Hierarchical genetic structure in an evolving species complex: Insights from genome wide ddRAD data in Sebastes mentella. PLOS ONE. ISSN 1932-6203. 16(5). doi: 10.1371/journal.pone.0251976. Full text in Research Archive
  • Saha, Atal; Hauser, Lorenz; Hedeholm, Rasmus; Planque, Benjamin; Fevolden, Svein-Erik & Boje, Jesper [Show all 7 contributors for this article] (2017). Cryptic Sebastes norvegicus species in Greenland waters revealed by microsatellites. ICES Journal of Marine Science. ISSN 1054-3139. 74(8), p. 2148–2158. doi: 10.1093/icesjms/fsx039.
  • Saha, Atal; Johansen, Torild; Hedeholm, Rasmus; Nielsen, Einar Eg; Westgaard, Jon-Ivar & Hauser, Lorenz [Show all 9 contributors for this article] (2017). Geographic extent of introgression in Sebastes mentella and its effect on genetic population structure. Evolutionary Applications. ISSN 1752-4571. 10(1), p. 77–90. doi: 10.1111/eva.12429. Full text in Research Archive
  • Westgaard, Jon-Ivar; Saha, Atal; Kent, Matthew Peter; Hansen, Hanne Hellerud; Knutsen, Halvor & Hauser, Lorenz [Show all 9 contributors for this article] (2017). Genetic population structure in Greenland halibut (Reinhardtius hippoglossoides) and its relevance to fishery management. Canadian Journal of Fisheries and Aquatic Sciences. ISSN 0706-652X. 74(4), p. 475–485. doi: 10.1139/cjfas-2015-0430. Full text in Research Archive
  • Saha, Atal; Hauser, Lorenz; Kent, Matthew Peter; Planque, Benjamin; Neat, Francis & Kirubakaran, Tina Graceline [Show all 11 contributors for this article] (2015). Seascape genetics of saithe (Pollachius virens) across the North Atlantic using single nucleotide polymorphisms. ICES Journal of Marine Science. ISSN 1054-3139. 72(9), p. 2732–2741. doi: 10.1093/icesjms/fsv139.

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  • Christensen, Helle Torp; Riget, Frank; Backe, Marie Balslev; Saha, Atal; Johansen, Torild & Hedeholm, Rasmus (2018). Comparison of three methods for identification of redfish (Sebastes mentella and S. norvegicus) from the Greenland east coast. Fisheries Research. ISSN 0165-7836. 201, p. 11–17. doi: 10.1016/j.fishres.2018.01.003.

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Published Apr. 16, 2024 11:32 AM