Participation in the XXIV Seminar on Population Genetics and Evolution (SGPE) of the Spanish Society of Genetics (SEG).
From January 15-17, 2025, we participated in the XXIV Seminar on Population Genetics and Evolution held at the Parador de Mazagón (Huelva), where we presented the first results of the CONSIBERTROMICS project.
The abstract of our presentation is included below:
Title: CONSIBERTROMICS: A genomic project for the conservation and recovery of Iberian endemisms of the brown trout
Authors: Manuel Vera, Alvaro Pita, Sandra Heras, Jordi Morata, Raúl Tonda, David Diez del Molino, Dorte Bekkevold, Adrián Casanova, Alba Abras, Maria Inés Roldán, Jose Luis García-Marin
The brown trout (Salmo trutta) has a rich evolutionary history in the Iberian Peninsula with the presence of four lineages: Adriatic (AD), Atlantic (AT), Mediterranean (ME), and Duero (DU), the latter being endemic. Furthermore, there is evidence of genomic erosion caused by restocking with non-native lineages. The specific goal of the CONSIBERTROMICS project is to determine the historical adaptive value of genomic divergence, both structural and functional, between Iberian trout lineages to assess the resilience of their populations to ongoing environmental changes. Here, we present the first results from whole-genome resequencing of 40 individuals, including both native lineages from the Iberian Peninsula and non-native individuals from fish farms and their natural populations of origin, as well as individuals from remote populations in the eastern range of the species distribution, including specimens of the species S. marmoratus. The obtained genomes had an average coverage of 21x. Unique alignments against the available reference genome (fSalTru1.1; GCF_901001165.1) of the obtained reads ranged from 80% for the northern European specimens, the source of the reference genome, to 70% for the S. marmoratus specimens. The evolutionary relationships among the specimens using their mitogenomes perfectly matched previous data and confirmed the distinction of Iberian lineages. Finally, the results based on nuclear genomic data clearly separated the eastern group from those present in the Atlantic and Mediterranean rivers.
