The role of historical biogeography in shaping colour morph diversity in the common wall lizard

The maintenance of polymorphisms often depends on multiple selective forces, but less is known on the role of stochastic or historical processes in maintaining variation. The common wall lizard (Podarcis muralis) is a colour polymorphic species in which local colour morph frequencies are thought to be modulated by natural and sexual selection. Here, we used genome-wide single-nucleotide polymorphism data to investigate the relationships between morph composition and population biogeography at a regional scale, by comparing morph composition with patterns of genetic variation of 54 populations sampled across the Pyrenees. We found that genetic divergence was explained by geographic distance but not by environmental features. Differences in morph composition were associated with genetic and environmental differentiation, as well as differences in sex ratio. Thus, variation in colour morph frequencies could have arisen via historical events and/or differences in the permeability to gene fl..., See the associated publication for details., , # The role of historical biogeography in shaping colour morph diversity in the common wall lizard

[https://doi.org/10.5061/dryad.4xgxd25j0](https://doi.org/10.5061/dryad.4xgxd25j0)

## Description of the data and file structure

The dataset associated to this publication includes the following files:

* `\"R_scripts_historical_biogeography.zip\"` (archived in Zenodo: [https://doi.org/10.5281/zenodo.10810050](https://doi.org/10.5281/zenodo.10810050)

This file includes six R scripts required to reproduce the results of this study:

**Scripts:**

**1_Get_genetic_diversity_indices.R**: This file includes the code to calculate the genetic diversity indices.

**2_Obtain_distance_matrices.R**: This file contains the code to produce the FST, topographic and environmental to be employed in further analyses. It also includes the code to obtain the distance matrices for sex ratio and morph composition indices.

**3_MMRRs.R**: Contains the code to carry out the multiple matrix...