10.5061/DRYAD.4R34D2K
Piza-Roca, C
University of the Sunshine Coast
Schoeman, D
University of the Sunshine Coast
Frere, C
University of the Sunshine Coast
Data from: Fitness benefits of male dominance behaviours depend on the
degree of inbreeding in a polyandrous lizard
Dryad
dataset
2019
Polygamy
post-copulatory selection
pre-copulatory selection
reptile
Social dominance
Alternative Reproductive Tactics
2020-05-08T00:00:00Z
2020-05-08T00:00:00Z
en
58635251 bytes
4
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
In polyandrous species, sexual selection extends beyond mating competition
to selection for egg fertilization. As a result, the degree to which
factors influencing mating success impact overall reproductive success
becomes variable. Here, we used a longitudinal behavioural and genetic
dataset for a population of eastern water dragons (Intellagama lesueurii)
to investigate the degree to which male dominance, a pre-mating selection
trait, influences overall reproductive success, measured as the number of
surviving offspring. Moreover, we examine the interactive effects with a
genetic trait, individual inbreeding, known to influence reproductive
success of males in this species. We found fitness benefits of male
dominance, measured as body size and frequency of dominance behaviours
displayed. However, individuals’ propensity to display dominance
behaviours had mixed effects, depending on the degree of inbreeding. While
inbred males benefited from frequent displays, highly outbred males
exhibited better reproductive outputs when displaying to a lesser extent.
Given that outbred males have enhanced reproductive success in this
species, the costs of displaying dominance behaviours may outweigh the
benefits. Overall, our results demonstrate the fitness benefits of
dominance in a polyandrous lizard, and suggest that these are modulated by
an independent genetic trait. Our results may contribute to explaining the
presence of alternative mating tactics in this species, due to the
variability in net fitness benefits of dominance. Our findings also reveal
the challenges associated with investigating fitness traits in isolation,
which may undermine the validity of results when important interactions
are ignored.
R code for SNP filtering1 SNP filtering.RR code for Pedigree
reconstruction with Sequoia2 Pedigree reconstruction with Sequoia.RR code
for statistical analysis3 Statistical analysis.R349 SNPs for pedigree
reconstruction349SNPs_pedigree_reconstruction.raw4433 SNPs for inbreeding,
heterozygosity and relatedness4433SNPs.pedIndividual frequencies of
dominance behavioursDominance.csvInbreeding
estimatesInbreeding.csvMorphological measuresMorph.csvGenetic
relatednessRelatedness.csvRelatedness.csvID keyID_key.csvLife-history
dataLH_sequoia.csvData frame for statistical
analysisPaternity_master.csvRaw genetic data
1Report_DWdrag17-2731_SNP_1.csvReport_DWdrag17-2731_SNP_singlerow_1