Intralocus sexual conflict

Bonduriansky, Russell; Chenoweth, Stephen F.

doi:10.1016/j.tree.2008.12.005

Cited by 706 publications

(895 citation statements)

References 81 publications

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“…This last insight is of particular importance in light of recent findings identifying intralocus sexual conflict (IaSC) as a major genetic constraint on adaptation in sexual populations (Bonduriansky and Chenoweth 2009;Cox and Calsbeek 2009). IaSC occurs when selection favors alternative alleles in males and females at a given locus (Rice 1992;Chippindale et al 2001) and can act to maintain standing genetic variation with sexually antagonistic (SA) effects on fitness (Kidwell 1977;Connallon and Clark 2012;Arnqvist et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Intralocus Sexual Conflict and the Tragedy of the Commons in Seed Beetles

Berger

Martinossi‐Allibert

Grieshop

et al. 2016

The American Naturalist

128

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Online enhancements: appendixes, supplemental PDF. Dryad data: http://dx.doi.org/10.5061/dryad.bc94c.abstract: The evolution of male traits that inflict direct harm on females during mating interactions can result in a so-called tragedy of the commons, where selfish male strategies depress population viability. This tragedy of the commons can be magnified by intralocus sexual conflict (IaSC) whenever alleles that reduce fecundity when expressed in females spread in the population because of their benefits in males. We evaluated this prediction by detailed phenotyping of 73 isofemale lines of the seed beetle Callosobruchus maculatus. We quantified genetic variation in life history and morphology, as well as associated covariance in male and female adult reproductive success. In parallel, we created replicated artificial populations of each line and measured their productivity. Genetic constraints limited independent trait expression in the sexes, and we identified several instances of sexually antagonistic covariance between traits and fitness, signifying IaSC. Population productivity was strongly positively correlated to female adult reproductive success but uncorrelated with male reproductive success. Moreover, male (female) phenotypic optima for several traits under sexually antagonistic selection were exhibited by the genotypes with the lowest (highest) population productivity. Our study forms a direct link between individuallevel sex-specific selection and population demography and places lifehistory traits at the epicenter of these dynamics.

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Section: Introductionmentioning

confidence: 99%

“…Theory predicts that IaSC and IeSC are intricately linked (Arnqvist and Rowe 2005;Bonduriansky and Chenoweth 2009;Perry and Rowe 2014). IaSC could, for example, arise whenever IeSC over optimal mating rates spurs coevolution of interacting male and female reproductive traits that, to some extent, share a common genetic basis in the sexes.…”

Section: Introductionmentioning

confidence: 99%

Intralocus Sexual Conflict and the Tragedy of the Commons in Seed Beetles

Berger

Martinossi‐Allibert

Grieshop

et al. 2016

The American Naturalist

128

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“…Under such conditions, alleles at a particular locus may confer opposite fitness consequences when expressed in either sex Bedhomme and Chippindale, 2007;Bonduriansky and Chenoweth, 2009), generating intralocus sexual conflict in which the adaptive evolution of one sex is impeded or limited by the other (Lande, 1980;Rice, 1984). Recent reviews suggest that sexually antagonistic selection may be common in natural populations (Cox and Calsbeek, 2009) and that the intersex genetic covariance for phenotypic traits is generally positive (Poissant et al, 2009), indicating considerable potential for ongoing intralocus conflict.…”

Section: Introductionmentioning

confidence: 99%

“…Lande (1980) showed how, in dioecious populations where males and females have separate optima, intersex genetic correlations can slow the rate at which mean fitness (i.e., male and female, jointly) increases. Although adaptation is initially rapid due to alleles with sexually concordant effects, as these alleles become fixed the response slows and the remaining genetic variance is characterized by negative intersex correlations (Chapman et al, 2003;Bonduriansky and Chenoweth, 2009). By extension, the r w FM observed in novel environments might also be expected to vary with the absolute fitness of the population in each, whereby relatively harsh environments tend to reveal sexually concordant genetic variation, whereas in relatively benign ones sex-specific (and potentially sexually discordant) genetic variance figures more prominently.…”

Section: Introductionmentioning

confidence: 99%

Comparing the intersex genetic correlation for fitness across novel environments in the fruit fly, Drosophila serrata

2013

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Sexually antagonistic genetic variation can pose limits to the independent evolution and adaptation of the sexes. The extent of sexually antagonistic variation is reflected in the intersex genetic correlation for fitness (r w FM ). Previous estimates of this correlation have been mostly limited to populations in environments to which they are already well adapted, making it difficult to gauge the importance of sexually antagonistic genetic variance during the early stages of adaptation, such as that occurring following abrupt environmental change or upon the colonization of new habitat. Here we assayed male and female lifetime fitness in a population of Drosophila serrata in four novel laboratory environments. We found that r w FM varied significantly across environments, with point estimates ranging from positive to negative values of considerable magnitude. We also found that the variability among estimates was because, at least in part, of significant differences among environments in the genetic variances of both male and female fitness, with no evidence of any significant changes in the intersex covariance itself, although standard errors of these estimates were large. Our results illustrate the unpredictable nature of r w FM in novel environments and suggest that, although sexually antagonistic genetic variance can be pronounced in some novel environments, it may have little effect in constraining the early stages of adaptation in others.

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“…Apart from enabling work on species that may not be amenable to controlled experiments, the study of wild populations is motivated by unparalleled opportunities to address topics requiring fitness estimates that are minimally influenced by experimental conditions (Ellegren and Sheldon, 2008;Clutton-Brock and Sheldon, 2010;Slate et al, 2010). These include the genetic architecture of fitness in natural environments (Ellegren and Sheldon, 2008), the evolutionary dynamics of sexually selected traits (Chenoweth and McGuigan, 2010), evolutionary stasis (for example, Gratten et al, 2008) and sexually antagonistic genetic variation (Bonduriansky and Chenoweth, 2009;Slate et al, 2010). However, apart from work in humans, studies on the genetic architecture of ecologically important traits in free-living populations remain rare because of difficulties in maintaining multigenerational pedigrees and assembling adequate genotype-phenotype data sets (Slate, 2005;Slate et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

QTL mapping for sexually dimorphic fitness-related traits in wild bighorn sheep

et al. 2011

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Dissecting the genetic architecture of fitness-related traits in wild populations is key to understanding evolution and the mechanisms maintaining adaptive genetic variation. We took advantage of a recently developed genetic linkage map and phenotypic information from wild pedigreed individuals from Ram Mountain, Alberta, Canada, to study the genetic architecture of ecologically important traits (horn volume, length, base circumference and body mass) in bighorn sheep. In addition to estimating sex-specific and cross-sex quantitative genetic parameters, we tested for the presence of quantitative trait loci (QTLs), colocalization of QTLs between bighorn sheep and domestic sheep, and sexÂQTL interactions. All traits showed significant additive genetic variance and genetic correlations tended to be positive. Linkage analysis based on 241 microsatellite loci typed in 310 pedigreed animals resulted in no significant and five suggestive QTLs (four for horn dimension on chromosomes 1, 18 and 23, and one for body mass on chromosome 26) using genome-wide significance thresholds (Logarithm of odds (LOD) 43.31 and 41.88, respectively). We also confirmed the presence of a horn dimension QTL in bighorn sheep at the only position known to contain a similar QTL in domestic sheep (on chromosome 10 near the horns locus; nominal Po0.01) and highlighted a number of regions potentially containing weight-related QTLs in both species. As expected for sexually dimorphic traits involved in male-male combat, loci with sex-specific effects were detected. This study lays the foundation for future work on adaptive genetic variation and the evolutionary dynamics of sexually dimorphic traits in bighorn sheep.

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Intralocus sexual conflict

Cited by 706 publications

References 81 publications

Intralocus Sexual Conflict and the Tragedy of the Commons in Seed Beetles

Intralocus Sexual Conflict and the Tragedy of the Commons in Seed Beetles

Comparing the intersex genetic correlation for fitness across novel environments in the fruit fly, Drosophila serrata

QTL mapping for sexually dimorphic fitness-related traits in wild bighorn sheep

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