Data from: Pre- and postcopulatory sexual selection favor aggressive, young males in polyandrous groups of red junglefowl
| Main Authors: | McDonald, Grant C., Spurgin, Lewis G., Fairfield, Eleanor A., Richardson, David S., Pizzari, Tommaso |
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| Format: | info dataset Journal |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4953829 |
Daftar Isi:
- A challenge in evolutionary biology is to understand the operation of sexual selection on males in polyandrous groups, where sexual selection occurs before and after mating. Here, we combine fine-grained behavioural information (>41,000 interactions) with molecular parentage data to study sexual selection in replicated, age-structured groups of polyandrous red junglefowl, Gallus gallus. Male reproductive success was determined by the number of females mated (precopulatory sexual selection) and his paternity share, which was driven by the polyandry of his female partners (postcopulatory sexual selection). Pre- and postcopulatory components of male reproductive success covaried positively; males with high mating success also had high paternity share. Two male phenotypes affected male pre- and postcopulatory performance: average aggressiveness towards rival males and age. Aggressive males mated with more females and more often with individual females, resulting in higher sexual exclusivity. Younger males mated with more females and more often with individual females, suffering less intense sperm competition than older males. Older males had a lower paternity share even allowing for their limited sexual exclusivity, indicating they may produce less competitive ejaculates. These results indicate that - in these populations - postcopulatory sexual selection reinforces precopulatory sexual selection, consistently promoting younger and more aggressive males.
- Male Data1Data for individual male red junglefowl. Male reproductive success, mating success, average partner fecundity, paternity share and sperm competition intensities. Also including male traits (male age, average aggression and remating rate). Standardised values within groups are also provided.Male Female Data2Sexual network matrices for male (rows) and female (columns) red junglefowl in replicate groups. Networks are weighted by the number of copulations between male and female pairs.Male Male Data3Male-male aggression networks for replicate groups of red junglefowl. Rows are pairs of male red junglefowl. "maleout" is the number of times "male1" initiated an aggressive interaction with "male2". "malein" is the number of times male2 initiated an aggressive interaction with "male1".