5 Works

Data from: Oxidative damage increases with reproductive energy expenditure and is reduced by food-supplementation

Quinn E. Fletcher, Colin Selman, Stan Boutin, Andrew G. McAdam, Sarah B. Woods, Arnold Y. Seo, Christiaan Leeuwenburgh, John R. Speakman & Murray M. Humphries
A central principle in life-history theory is that reproductive effort negatively affects survival. Costs of reproduction are thought to be physiologically-based, but the underlying mechanisms remain poorly understood. Using female North American red squirrels (Tamiasciurus hudsonicus), we test the hypothesis that energetic investment in reproduction overwhelms investment in antioxidant protection, leading to oxidative damage. In support of this hypothesis we found that the highest levels of plasma protein oxidative damage in squirrels occurred during the...

Data from: Progressive genome-wide introgression in agricultural Campylobacter coli

Samuel K. Sheppard, Xavier Didelot, Keith A. Jolley, Aaron E. Darling, David J. Kelly, Alison Cody, Frances M. Colles, Norval J.C. Strachan, Iain D. Ogden, Ken Forbes, Nigel P. French, Philip Carter, William G. Miller, Noel D. McCarthy, Robert Owen, Eva Litrup, Michael Egholm, Stephen D. Bentley, Julian Parkhill, Martin C. J. Maiden, Daniel Falush, Jason P. Affourtit, Norval J. C. Strachan, Ben Pascoe & Guillaume Meric
Hybridization between distantly related organisms can facilitate rapid adaptation to novel environments, but is potentially constrained by epistatic fitness interactions among cell components. The zoonotic pathogens Campylobacter coli and C. jejuni differ from each other by around 15% at the nucleotide level, corresponding to an average of nearly 40 amino acids per protein-coding gene. Using whole genome sequencing, we show that a single C. coli lineage, which has successfully colonized an agricultural niche, has been...

Data from: Kin recognition: evidence that humans can perceive both positive and negative relatedness

Daniel B. Krupp, Lisa M. DeBruine, Benedict C. Jones & Martin L. Lalumière
The evolution of spite entails actors imposing costs on ‘negative’ relatives: those who are less likely than chance to share the actor’s alleles and therefore more likely to bear rival alleles. Yet, despite a considerable body of research confirming that organisms can recognise positive relatives, little research has shown that organisms can recognise negative relatives. Here, we extend previous work on human phenotype matching by introducing a cue to negative relatedness: negative self-resembling faces, which...

Data from: Offspring fitness varies with parental extra-pair status in song sparrows, Melospiza melodia

Rebecca J. Sardell, Peter Arcese & Jane M. Reid
Numerous studies have tested for indirect selection on female extra-pair reproduction (EPR) by quantifying whether extra-pair young (EPY) are fitter than their within-pair young (WPY) maternal half-siblings. In contrast, the hypothesis that offspring of EPY and WPY (rather than the EPY and WPY themselves) differ in fitness has not been tested, even though inter-generational effects of parental extra-pair status on offspring fitness could alter the magnitude and direction of indirect selection on EPR. We tested...

Data from: Predicting evolutionary responses to selection on polyandry in the wild: additive genetic covariances with female extra-pair reproduction

Jane M. Reid
The evolutionary forces that underlie polyandry, including extra-pair reproduction (EPR) by socially monogamous females, remain unclear. Selection on EPR and resulting evolution have rarely been explicitly estimated or predicted in wild populations, and evolutionary predictions are vulnerable to bias due to environmental covariances and correlated selection through unmeasured traits. However, evolutionary responses to (correlated) selection on any trait can be directly predicted as additive genetic covariances (covA) with appropriate components of relative fitness. I used...

Registration Year

  • 2012

Resource Types

  • Dataset


  • University of Aberdeen
  • University of Alberta
  • United States Department of Agriculture
  • McGill University
  • University of Guelph
  • Wellcome Trust
  • University of Florida
  • Queen's University
  • University of British Columbia
  • Statens Serum Institut