Publication: Variación genética y fenotípica en "Psammodromus algirus" (lagartija colilarga: implicaciones ecológicas y evolutivas
Loading...
Files
Official URL
Full text at PDC
Publication Date
2019-08-06
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad Complutense de Madrid
Citations
Exportar
Abstract
Esta tesis trata de, una vez explorados los rasgos fenotípicos que pueden interpretarse como adaptaciones locales, contestar a preguntas que tienen que ver con cómo responde el genoma a las presiones selectivas divergentes que subyacen a la diferenciación de dichos rasgos. En general, no se pretende descubrir la base genética de la adaptación a los gradientes ambientales que generan adaptación local; lo que se busca es desentrañar cómo la evolución provee la variación genética necesaria para afrontar diferentes retos ecológicos en una especie capaz de subsistir en una gran variedad de ambientes.Mediante escaneos genómicos a gran escala, conseguimos definir fracciones del genoma relacionadas con la adaptación a distintos ambientes, revelando patrones de convergencia y divergencia adaptativa gracias a procesos tanto de mantenimiento de diversidad genética ancestral como de innovación genética...
The aim of this PhD Thesis is to clarify the genomic basis of local adaptation, as documented by divergence in adaptive phenotypic traits. For that purpose, I address different questions all of them related with genetic responses to divergent selective pressures along environmental gradients on a genome-wide scale. My aim is not to uncover the genetic basis of particular adaptations, but rather to reveal how evolution provides the genetic variation that ecology demands in a widespread species that is able to survive in a large variety of environmental conditions. By means of genomic scans based on massive sequencing and different methods of outlier detection, I could define genome portions that could be related to adaptation along a well-defined environmental gradient. My results revealed both adaptive divergence and convergence, which were achieved by a combination of divergent selection, balancing selection, genetic innovation, and gene flow...
The aim of this PhD Thesis is to clarify the genomic basis of local adaptation, as documented by divergence in adaptive phenotypic traits. For that purpose, I address different questions all of them related with genetic responses to divergent selective pressures along environmental gradients on a genome-wide scale. My aim is not to uncover the genetic basis of particular adaptations, but rather to reveal how evolution provides the genetic variation that ecology demands in a widespread species that is able to survive in a large variety of environmental conditions. By means of genomic scans based on massive sequencing and different methods of outlier detection, I could define genome portions that could be related to adaptation along a well-defined environmental gradient. My results revealed both adaptive divergence and convergence, which were achieved by a combination of divergent selection, balancing selection, genetic innovation, and gene flow...
Description
Tesis de la Universidad Complutense de Madrid, Facultad de Ciencias Biológicas, leída el 25-04-2019