Now showing items 1-16 of 16

  • Can patterns of chromosome inversions in Drosophila pseudoobscura predict polyandry across a geographical cline? 

    Herrera, P; Taylor, Michelle Louise; Skeats, A; Price, TA; Wedell, Nina (Wiley Open Access, 2014-07-10)
    Female multiple mating, known as polyandry, is ubiquitous and occurs in a wide variety of taxa. Polyandry varies greatly from species in which females mate with one or two males in their lifetime to species in which females ...
  • Coevolution of non-fertile sperm and female receptivity in a butterfly. 

    Wedell, Nina; Wiklund, Christer; Bergström, Jonas (Royal Society, The, 2009-10-23)
    Sexual conflict can promote rapid evolution of male and female reproductive traits. Males of many polyandrous butterflies transfer nutrients at mating that enhances female fecundity, but generates sexual conflict over ...
  • Does polyandry control population sex ratio via regulation of a selfish gene? 

    Price, TA; Bretman, A; Gradilla, AC; Reger, J; Taylor, Michelle Louise; Giraldo-Perez, P; Campbell, A; Hurst, GD; Wedell, Nina (Royal Society, 2014-04-02)
    The extent of female multiple mating (polyandry) can strongly impact on the intensity of sexual selection, sexual conflict, and the evolution of cooperation and sociality. More subtly, polyandry may protect populations ...
  • Evolution of male-killer suppression in a natural population 

    Hornett, Emily A.; Charlat, Sylvain; Duplouy, Anne; Davies, Neil; Roderick, George K.; Wedell, Nina; Hurst, GD (Public Library of Science, 2006-09)
    Male-killing bacteria are widespread in arthropods, and can profoundly alter the reproductive biology of their host species. Here we detail the first case of complete suppression of a male killer. The nymphalid butterfly ...
  • The evolution of sex ratio distorter suppression affects a 25 cM genomic region in the butterfly Hypolimnas bolina 

    Hornett, Emily A.; Moran, Bruce; Reynolds, LA; Charlat, Sylvain; Tazzyman, S; Wedell, Nina; Jiggins, CD; Hurst, GD (Public Library of Science (PLoS), 2014-12)
    Symbionts that distort their host's sex ratio by favouring the production and survival of females are common in arthropods. Their presence produces intense Fisherian selection to return the sex ratio to parity, typified ...
  • Inbreeding alters intersexual fitness correlations in Drosophila simulans. 

    Duffy, E; Joag, R; Radwan, J; Wedell, Nina; Hosken, David J (Wiley Open Access, 2014-08-05)
    Intralocus sexual conflict results from sexually antagonistic selection on traits shared by the sexes. This can displace males and females from their respective fitness optima, and negative intersexual correlations (r mf) ...
  • Incomplete sex chromosome dosage compensation in the Indian meal moth, Plodia interpunctella, based on de novo transcriptome assembly. 

    Harrison, PW; Mank, JE; Wedell, Nina (Oxford University Press (OUP), 2012-10-03)
    Males and females experience differences in gene dose for loci in the nonrecombining region of heteromorphic sex chromosomes. If not compensated, this leads to expression imbalances, with the homogametic sex on average ...
  • The joint evolutionary histories of Wolbachia and mitochondria in Hypolimnas bolina 

    Charlat, Sylvain; Duplouy, Anne; Hornett, Emily A.; Dyson, Emily A.; Davies, Neil; Roderick, George K.; Wedell, Nina; Hurst, GD (BioMed Central, 2009)
    BACKGROUND: The interaction between the Blue Moon butterfly, Hypolimnas bolina, and Wolbachia has attracted interest because of the high prevalence of male-killing achieved within the species, the ecological consequences ...
  • Nuptial gifts fail to resolve a sexual conflict in an insect 

    Wedell, Nina; Tregenza, Tom; Simmons, Leigh W (BioMed Central, 2008-07-15)
    Background Because of the potential benefits to individuals of saving investment for future mating opportunities, there is conflict between mates over most aspects of reproduction. Males of many species transfer compounds ...
  • Opposite environmental and genetic influences on body size in North American Drosophila pseudoobscura. 

    Taylor, Michelle Louise; Skeats, A; Wilson, Alastair J.; Price, TA; Wedell, Nina (BioMed Central, 2015-03-21)
    BACKGROUND: Populations of a species often differ in key traits. However, it is rarely known whether these differences are associated with genetic variation and evolved differences between populations, or are instead simply ...
  • Polyandry in nature: a global analysis. 

    Taylor, Michelle Louise; Price, TAR; Wedell, Nina (Elsevier (Cell Press), 2014-07)
    A popular notion in sexual selection is that females are polyandrous and their offspring are commonly sired by more than a single male. We now have large-scale evidence from natural populations to be able to verify this ...
  • Sexual and natural selection both influence male genital evolution. 

    House, Clarissa M; Lewis, Zenobia; Hodgson, David J.; Wedell, Nina; Sharma, Manmohan Dev; Hunt, J; Hosken, David J (Public Library of Science, 2013-05-22)
    Rapid and divergent evolution of male genital morphology is a conspicuous and general pattern across internally fertilizing animals. Rapid genital evolution is thought to be the result of sexual selection, and the role of ...
  • Sexual conflict maintains variation at an insecticide resistance locus. 

    Hosken, David J; Rostant, WG; Kay, C; Wedell, Nina (BioMed Central, 2015-06-29)
    Background The maintenance of genetic variation through sexually antagonistic selection is controversial, partly because specific sexually-antagonistic alleles have not been identified. The Drosophila DDT resistance allele ...
  • Sperm dumping as a defense against meiotic drive 

    Price, TA; Lewis, Zenobia; Wedell, Nina (BioMed Central, 2009)
    Sperm from Drosophila simulans that carry a sex-ratio distorter is preferentially lost from females' sperm-storage organs. This suggests that sperm dumping is a major factor affecting sperm competition in this species, and ...
  • Temperature can shape a cline in polyandry, but only genetic variation can sustain it over time 

    Taylor, Michelle Louise; Price, TAR; Skeats, A; Wedell, Nina (Oxford University Press, 2015-10-25)
    Multiple mating by females (polyandry) is a widespread behavior occurring in diverse taxa, species, and populations. Polyandry can also vary widely within species, and individual populations, so that both monandrous and ...
  • Why aren’t signals of female quality more common? 

    Hosken, David J; Alonzo, SH; Wedell, Nina (Elsevier Masson, 2016-03-16)
    Highlights In most species females are less ornamented than males. We suggest a novel reason for this pattern. If females signal their sexual quality, they may suffer increased sexual harassment. Ornaments could therefore ...