Sexual selection's role in the persistence of polymorphism in an aposematic signal

The persistence of polymorphisms in aposematic species remains one of the most interesting paradoxes in evolutionary biology because aposematism theory suggests that polymorphisms should be unstable over time. We offer an explanation for the persistence of aposematic polymorphisms that considers not only the role of natural selection but also the role of sexual selection. While predation and mate choice generally act to erode signal variation, intraspecific competition may facilitate polymorphisms by reducing mate competition for males bearing the rarer warning signal. We tested this hypothesis in a population of the strawberry poison frog (Oophaga pumilio), where red (common) and yellow (rare) morphs co-exist using (1) a 10-year capture-mark-recapture experiment to study natural selection, and (2) a territorial intrusion experiment and (3) previously-published mate choice experiments to study sexual selection. We found that rare yellow males suffer less aggression from male conspecific..., , # Sexual selection's role in the persistence of polymorphism in an aposematic signal

Dataset DOI: [10.5061/dryad.hhmgqnkvf](10.5061/dryad.hhmgqnkvf)

## Description of the data and file structure

This dataset contains data and code to replicate the findings in the manuscript: \"Sexual selection’s role in the persistence of polymorphism in an aposematic signal\".

We performed two separate analyses: capture-mark-recapture analysis and male aggression analysis.

The capture-mark-recapture analysis were performed on males and females separately. Therefore, the code must be run for each sex separately (we submitted the data separately).

The infraspecific competition analysis can be replicated with the data containing territorial intrusion experiments (Bast_Agg_final)

### Files and variables

#### File: Mark_Males.txt

##### Variables

* ch: capture or recapture history for males. 0 means that the frog was not found, and 1 means that the frog was found at that particular survey
* color: do...,