Análisis genómico de las poblaciones de salmón atlántico (Salmo salar L.) de la península ibérica

After the drastic decrease of Atlantic salmon natural populations of the Iberian Peninsula in the last century, their restoration has been focused on habitat improvement and supportive breeding, with wild and captive individuals from different origins resulting in a failure of the initial enhancing...

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Bibliographic Details
Main Author: Gabián Álvarez, María
Other Authors: Carvajal Rodríguez, Antonio, Morán Martínez, Maria Paloma
Format: Doctoral or Postdoctoral Thesis
Language:Spanish
Published: Bioquímica, xenética e inmunoloxía 2021
Subjects:
Online Access:http://hdl.handle.net/11093/2296
Description
Summary:After the drastic decrease of Atlantic salmon natural populations of the Iberian Peninsula in the last century, their restoration has been focused on habitat improvement and supportive breeding, with wild and captive individuals from different origins resulting in a failure of the initial enhancing aim. In order to design an efficient management of these populations, genetic studies should be taking into account because can help to maintain correct levels of variability and avoid consanguinity increase. New massive genotyping technologies, like SNP, can provide information that can be applied in conservation programs. In this thesis project, we will use the information obtained after the hybridization of salmon DNA onto an array of 200,000 SNP together with long dataset about microsatellite variability, abundances, morphological data, ages, sexes, fishing data,… in order to design a optimal conservation program from this specie in Galician rivers. The genetics status of the present populations will be evaluated, by comparing populations with other Spanish rivers, and by studying the possible introgression of foreign genomes. In addition we will try to modeling of fishing season in order to minimize the impact of this sport on populations. Tras la drástica disminución de las poblaciones naturales de salmón atlántico en el último siglo, su recuperación se ha centrado en la Península Ibérica en la mejora del hábitat y en la repoblación de los ríos, tanto con individuos salvajes como de piscifactoría, que fracasó. Para una gestión eficiente, los estudios genéticos tienen una gran importancia, tanto para mantener niveles correctos de variabilidad como evitar el incremento en consanguinidad. Con el desarrollo de nuevas tecnologías de genotipado masivo, como los SNPs, se obtiene nueva información aplicable a programas de conservación. En este proyecto se utilizará la información de un array de 220,000 SNPs de Affymetrix, datos de microsatélites de varios años desde 1990, así como datos de abundancia, información ...