Facultative polyandry under heat stress and the evolutionary potential for climate-driven shifts in mating systems

The ecology of mating interactions determines a species’ mating system, yet whether environmental change can alter the mating system of a species remains unclear. Elevated temperatures can cause male sterility, prompting females to remate for fertility assurance. In monandrous systems, heat-induced male infertility poses a significant extinction risk, as females may mate exclusively with infertile males. A key question is whether male sterility could drive polyandry in a typically monandrous system. Here we address this by examining genetic variance underlying both male fertility resilience to heat stress and facultative polyandry, and assessing the fitness consequences of each mating system. We used isofemales lines of Drosophila subobscura, a monandrous species, exposing males to developmental heat stress. Male heat stress generated sterility and females mated to these males typically remated. While significant genetic variation in male fertility sen sitivity and female remating emer..., , # Facultative polyandry under heat stress and the evolutionary potential for climate-driven shifts in mating systems

Dataset DOI: [10.5061/dryad.1rn8pk173](10.5061/dryad.1rn8pk173)

## Description of the data and file structure

This repository archives the data and code associated with the manuscript titled, “Facultative polyandry under heat stress and the evolutionary potential for climate-driven shifts in mating systems”. There are 3 data sets (.csv) associated with this work and an R markdown script to support transparency and reproducibility:

* **Mating.csv; Sterility.csv; Survival.csv**: The raw data used to generate the figures and tables in the paper.
* **Pembury_Smith_et_al.Rmd**: A standalone R script that runs the models and produces the figures described and produced in the paper.

Below is a breakdown of the files.

### Files and variables

#### File: Mating.csv

**Description:** Raw data used to examine the effect of male developmental temperature on male mating and fema...,