Importancia de la distancia y el ambiente en la estructura genética de anuros neotropicales
The study of landscape features that influence genetic structure of wild populations can help us understand the first steps of biological divergence. Populations diverge when there is restriction to gene flow, which can happen due to environmental and geographic factors. However, the relative imp...
| Autor Principal: | Galarza Ferrín, Gabriela |
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| Formato: | bachelorThesis |
| Idioma: | English |
| Publicado: |
PUCE
2016
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| Materias: | |
| Acceso en línea: |
http://repositorio.puce.edu.ec/handle/22000/11471 |
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| Sumario: |
The study of landscape features that influence genetic structure of wild populations can
help us understand the first steps of biological divergence. Populations diverge when there
is restriction to gene flow, which can happen due to environmental and geographic factors.
However, the relative importance of these processes in generating genetic diferentiation at
the neotropical landscape is poorly understood. This study aims to quantify the effect of
isolation by environment (IBE) and isolation by distance (IBD) in the spatial genetic
structure of nine neotropical frog species by using Structural Equation Modelling. Our
analysis shows that IBD is the most important factor in all the species (0.61 IBD vs. 0.33
IBE on average) although IBE also has a significant effect. This suggests that spatial
genetic structure is mainly correlated to geographic rather than ecological factors in the
neotropical landscape. |
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