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Rowe L, Rundle HD. The Alignment of Natural and Sexual Selection. ANNUAL REVIEW OF ECOLOGY, EVOLUTION, AND SYSTEMATICS 2021. [DOI: 10.1146/annurev-ecolsys-012021-033324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sexual selection has the potential to decrease mean fitness in a population through an array of costs to nonsexual fitness. These costs may be offset when sexual selection favors individuals with high nonsexual fitness, causing the alignment of sexual and natural selection. We review the many laboratory experiments that have manipulated mating systems aimed at quantifying the net effects of sexual selection on mean fitness. These must be interpreted in light of population history and the diversity of ways manipulations have altered sexual interactions, sexual conflict, and sexual and natural selection. Theory and data suggest a net benefit is more likely when sexually concordant genetic variation is enhanced and that ecological context can mediate the relative importance of these different effects. Comparative studies have independently examined the consequences of sexual selection for population/species persistence. These provide little indication of a benefit, and interpreting these higher-level responses is challenging.
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Affiliation(s)
- Locke Rowe
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada M5S 3B2
| | - Howard D. Rundle
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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2
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Godwin JL, Lumley AJ, Michalczyk Ł, Martin OY, Gage MJG. Mating patterns influence vulnerability to the extinction vortex. GLOBAL CHANGE BIOLOGY 2020; 26:4226-4239. [PMID: 32558066 DOI: 10.1111/gcb.15186] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/25/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
Earth's biodiversity is undergoing mass extinction due to anthropogenic compounding of environmental, demographic and genetic stresses. These different stresses can trap populations within a reinforcing feedback loop known as the extinction vortex, in which synergistic pressures build upon one another through time, driving down population viability. Sexual selection, the widespread evolutionary force arising from competition, choice and reproductive variance within animal mating patterns could have vital consequences for population viability and the extinction vortex: (a) if sexual selection reinforces natural selection to fix 'good genes' and purge 'bad genes', then mating patterns encouraging competition and choice may help protect populations from extinction; (b) by contrast, if mating patterns create load through evolutionary or ecological conflict, then population viability could be further reduced by sexual selection. We test between these opposing theories using replicate populations of the model insect Tribolium castaneum exposed to over 10 years of experimental evolution under monogamous versus polyandrous mating patterns. After a 95-generation history of divergence in sexual selection, we compared fitness and extinction of monogamous versus polyandrous populations through an experimental extinction vortex comprising 15 generations of cycling environmental and genetic stresses. Results showed that lineages from monogamous evolutionary backgrounds, with limited opportunities for sexual selection, showed rapid declines in fitness and complete extinction through the vortex. By contrast, fitness of populations from the history of polyandry, with stronger opportunities for sexual selection, declined slowly, with 60% of populations surviving by the study end. The three vortex stresses of (a) nutritional deprivation, (b) thermal stress and (c) genetic bottlenecking had similar impacts on fitness declines and extinction risk, with an overall sigmoid decline in survival through time. We therefore reveal sexual selection as an important force behind lineages facing extinction threats, identifying the relevance of natural mating patterns for conservation management.
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Affiliation(s)
- Joanne L Godwin
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Alyson J Lumley
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Łukasz Michalczyk
- Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Oliver Y Martin
- Department of Biology (D-BIOL) & Institute of Integrative Biology (IBZ), ETH Zurich, Zürich, Switzerland
| | - Matthew J G Gage
- School of Biological Sciences, University of East Anglia, Norwich, UK
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3
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Gibson Vega A, Kennington WJ, Tomkins JL, Dugand RJ. Experimental evidence for accelerated adaptation to desiccation through sexual selection on males. J Evol Biol 2020; 33:1060-1067. [PMID: 32315476 DOI: 10.1111/jeb.13634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/26/2020] [Accepted: 04/13/2020] [Indexed: 11/26/2022]
Abstract
The impact of sexual selection on the adaptive process remains unclear. On the one hand, sexual selection might hinder adaptation by favouring costly traits and preferences that reduce nonsexual fitness. On the other hand, condition dependence of success in sexual selection may accelerate adaptation. Here, we used replicate populations of Drosophila melanogaster to artificially select on male desiccation resistance while manipulating the opportunity for precopulatory sexual selection in a factorial design. Following five generations of artificial selection, we measured the desiccation resistance of males and females to test whether the addition of sexual selection accelerated adaptation. We found a significant interaction between the effects of natural selection and sexual selection: desiccation resistance was highest in populations where sexual selection was allowed to operate. Despite only selecting on males, we also found a correlated response in females. These results provide empirical support for the idea that sexual selection can accelerate the rate of adaptation.
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Affiliation(s)
- Aline Gibson Vega
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - W Jason Kennington
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Joseph L Tomkins
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Robert J Dugand
- Centre for Evolutionary Biology, School of Biological Sciences, The University of Western Australia, Crawley, WA, Australia
- School of Biological Sciences, The University of Queensland, St Lucia, QLD, Australia
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4
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Sexual Selection Does Not Increase the Rate of Compensatory Adaptation to a Mutation Influencing a Secondary Sexual Trait in Drosophila melanogaster. G3-GENES GENOMES GENETICS 2020; 10:1541-1551. [PMID: 32122961 PMCID: PMC7202011 DOI: 10.1534/g3.119.400934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Theoretical work predicts that sexual selection can enhance natural selection, increasing the rate of adaptation to new environments and helping purge harmful mutations. While some experiments support these predictions, remarkably little work has addressed the role of sexual selection on compensatory adaptation—populations’ ability to compensate for the costs of deleterious alleles that are already present. We tested whether sexual selection, as well as the degree of standing genetic variation, affect the rate of compensatory evolution via phenotypic suppression in experimental populations of Drosophila melanogaster. These populations were fixed for a spontaneous mutation causing mild abnormalities in the male sex comb, a structure important for mating success. We fine-mapped this mutation to an ∼85 kb region on the X chromosome containing three candidate genes, showed that the mutation is deleterious, and that its phenotypic expression and penetrance vary by genetic background. We then performed experimental evolution, including a treatment where opportunity for mate choice was limited by experimentally enforced monogamy. Although evolved populations did show some phenotypic suppression of the morphological abnormalities in the sex comb, the amount of suppression did not depend on the opportunity for sexual selection. Sexual selection, therefore, may not always enhance natural selection; instead, the interaction between these two forces may depend on additional factors.
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5
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Plesnar-Bielak A, Sychta K, Gaczorek TS, Palka JK, Prus MA, Prokop ZM. Does operational sex ratio influence relative strength of purging selection in males versus females? J Evol Biol 2019; 33:80-88. [PMID: 31549754 DOI: 10.1111/jeb.13547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 09/13/2019] [Accepted: 09/19/2019] [Indexed: 11/29/2022]
Abstract
According to theory, sexual selection in males may efficiently purge mutation load of sexual populations, reducing or fully compensating 'the cost of males'. For this to occur, mutations not only need to be deleterious to both sexes, they also must affect males more than females. A frequently overlooked problem is that relative strength of selection on males versus females may vary between environments, with social conditions being particularly likely to affect selection in males and females differently. Here, we induced mutations in red flour beetles (Tribolium castaneum) and tested their effect in both sexes under three different operational sex ratios (1:2, 1:1 and 2:1). Induced mutations decreased fitness of both males and females, but their effect was not stronger in males. Surprisingly, operational sex ratio did not affect selection against deleterious mutations nor its relative strength in the sexes. Thus, our results show no support for the role of sexual selection in the evolutionary maintenance of sex.
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Affiliation(s)
| | - Karolina Sychta
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Tomasz S Gaczorek
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Joanna K Palka
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Monika A Prus
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Zofia M Prokop
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
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6
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Parrett JM, Knell RJ. The effect of sexual selection on adaptation and extinction under increasing temperatures. Proc Biol Sci 2019; 285:rspb.2018.0303. [PMID: 29669902 DOI: 10.1098/rspb.2018.0303] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 03/23/2018] [Indexed: 01/03/2023] Open
Abstract
Strong sexual selection has been reported to both enhance and hinder the adaptive capacity and persistence of populations when exposed to novel environments. Consequently, how sexual selection influences population adaption and persistence under stress remains widely debated. Here, we present two empirical investigations of the fitness consequences of sexual selection on populations of the Indian meal moth, Plodia interpunctella, exposed to stable or gradually increasing temperatures. When faced with increasing temperatures, strong sexual selection was associated with both increased fecundity and offspring survival compared with populations experiencing weak sexual selection, suggesting sexual selection acts to drive adaptive evolution by favouring beneficial alleles. Strong sexual selection did not, however, delay extinction when the temperature became excessively high. By manipulating individuals' mating opportunities during fitness assays, we were able to assess the effect of multiple mating independently from the effect of population-level sexual selection, and found that polyandry has a positive effect on both fecundity and offspring survival under increasing temperatures in those populations evolving with weak sexual selection. Within stable temperatures, there were some benefits from strong sexual selection but these were not consistent across the entire experiment, possibly reflecting changing costs and benefits of sexual selection under stabilizing and directional selection. These results indicate that sexual selection can provide a buffer against climate change and increase adaptation rates within a continuously changing environment. These positive effects of sexual selection may, however, be too small to protect populations and delay extinction when environmental changes are relatively rapid.
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Affiliation(s)
- Jonathan M Parrett
- School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Robert J Knell
- School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
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7
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Godwin JL, Spurgin LG, Michalczyk Ł, Martin OY, Lumley AJ, Chapman T, Gage MJG. Lineages evolved under stronger sexual selection show superior ability to invade conspecific competitor populations. Evol Lett 2018; 2:511-523. [PMID: 30283698 PMCID: PMC6145403 DOI: 10.1002/evl3.80] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/22/2018] [Accepted: 07/26/2018] [Indexed: 11/09/2022] Open
Abstract
Despite limitations on offspring production, almost all multicellular species use sex to reproduce. Sex gives rise to sexual selection, a widespread force operating through competition and choice within reproduction, however, it remains unclear whether sexual selection is beneficial for total lineage fitness, or if it acts as a constraint. Sexual selection could be a positive force because of selection on improved individual condition and purging of mutation load, summing into lineages with superior fitness. On the other hand, sexual selection could negate potential net fitness through the actions of sexual conflict, or because of tensions between investment in sexually selected and naturally selected traits. Here, we explore these ideas using a multigenerational invasion challenge to measure consequences of sexual selection for the overall net fitness of a lineage. After applying experimental evolution under strong versus weak regimes of sexual selection for 77 generations with the flour beetle Tribolium castaneum, we measured the overall ability of introductions from either regime to invade into conspecific competitor populations across eight generations. Results showed that populations from stronger sexual selection backgrounds had superior net fitness, invading more rapidly and completely than counterparts from weak sexual selection backgrounds. Despite comprising only 10% of each population at the start of the invasion experiment, colonizations from strong sexual selection histories eventually achieved near-total introgression, almost completely eliminating the original competitor genotype. Population genetic simulations using the design and parameters of our experiment indicate that this invasion superiority could be explained if strong sexual selection had improved both juvenile and adult fitness, in both sexes. Using a combination of empirical and modeling approaches, our findings therefore reveal positive and wide-reaching impacts of sexual selection for net population fitness when facing the broad challenge of invading competitor populations across multiple generations.
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Affiliation(s)
- Joanne L. Godwin
- School of Biological SciencesUniversity of East AngliaNorwichNR4 7TJUK
| | - Lewis G. Spurgin
- School of Biological SciencesUniversity of East AngliaNorwichNR4 7TJUK
| | - Łukasz Michalczyk
- Department of EntomologyInstitute of ZoologyJagiellonian University30–387KrakówPoland
| | - Oliver Y. Martin
- ETH ZurichInstitute of Integrative BiologyD‐USYS8092ZürichSwitzerland
| | - Alyson J. Lumley
- School of Biological SciencesUniversity of East AngliaNorwichNR4 7TJUK
| | - Tracey Chapman
- School of Biological SciencesUniversity of East AngliaNorwichNR4 7TJUK
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8
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Abstract
Competition for mates can be a major source of selection, not just on secondary sexual traits but across the genome. Mate competition strengthens selection on males via sexual selection, which typically favors healthy, vigorous individuals and, thus, all genetic variants that increase overall quality. However, recent studies suggest another major effect of mate competition that could influence genome-wide selection: Sexual harassment by males can drastically weaken selection on quality in females. Because of these conflicting effects, the net effect of mate competition is uncertain, although perhaps not entirely unpredictable. We propose that the environment in which mate competition occurs mediates the importance of sexual selection relative to sexual conflict and, hence, the net effect of mate competition on nonsexual fitness. To test this, we performed experimental evolution with 63 fruit fly populations adapting to novel larval conditions where each population was maintained with or without mate competition. In half the populations with mate competition, adults interacted in simple, high-density environments. In the remainder, adults interacted in more spatially complex environments in which male-induced harm is reduced. Populations evolving with mate competition in the complex environment adapted faster to novel larval environments than did populations evolving without mate competition or with mate competition in the simple environment. Moreover, mate competition in the complex environment caused a substantial reduction in inbreeding depression for egg-to-adult viability relative to the other two mating treatments. These results demonstrate that the mating environment has a substantial and predictable effect on nonsexual fitness through adaptation and purging.
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9
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Singh A, Agrawal AF, Rundle HD. Environmental complexity and the purging of deleterious alleles. Evolution 2017; 71:2714-2720. [DOI: 10.1111/evo.13334] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 01/17/2023]
Affiliation(s)
- Amardeep Singh
- Department of Ecology and Evolutionary Biology; University of Toronto; Toronto ON Canada M5S 3B2
| | - Aneil F. Agrawal
- Department of Ecology and Evolutionary Biology; University of Toronto; Toronto ON Canada M5S 3B2
| | - Howard D. Rundle
- Department of Biology; University of Ottawa; Ottawa ON Canada K1N 6N5
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10
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Allen SL, McGuigan K, Connallon T, Blows MW, Chenoweth SF. Sexual selection on spontaneous mutations strengthens the between-sex genetic correlation for fitness. Evolution 2017; 71:2398-2409. [PMID: 28722119 DOI: 10.1111/evo.13310] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 06/08/2017] [Indexed: 11/27/2022]
Abstract
A proposed benefit to sexual selection is that it promotes purging of deleterious mutations from populations. For this benefit to be realized, sexual selection, which is usually stronger on males, must purge mutations deleterious to both sexes. Here, we experimentally test the hypothesis that sexual selection on males purges deleterious mutations that affect both male and female fitness. We measured male and female fitness in two panels of spontaneous mutation-accumulation lines of the fly, Drosophila serrata, each established from a common ancestor. One panel of mutation accumulation lines limited both natural and sexual selection (LS lines), whereas the other panel limited natural selection, but allowed sexual selection to operate (SS lines). Although mutation accumulation caused a significant reduction in male and female fitness in both the LS and SS lines, sexual selection had no detectable effect on the extent of the fitness reduction. Similarly, despite evidence of mutational variance for fitness in males and females of both treatments, sexual selection had no significant impact on the amount of mutational genetic variance for fitness. However, sexual selection did reshape the between-sex correlation for fitness: significantly strengthening it in the SS lines. After 25 generations, the between-sex correlation for fitness was positive but considerably less than one in the LS lines, suggesting that, although most mutations had sexually concordant fitness effects, sex-limited, and/or sex-biased mutations contributed substantially to the mutational variance. In the SS lines this correlation was strong and could not be distinguished from unity. Individual-based simulations that mimick the experimental setup reveal two conditions that may drive our results: (1) a modest-to-large fraction of mutations have sex-limited (or highly sex-biased) fitness effects, and (2) the average fitness effect of sex-limited mutations is larger than the average fitness effect of mutations that affect both sexes similarly.
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Affiliation(s)
- Scott L Allen
- School of Biological Sciences, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Katrina McGuigan
- School of Biological Sciences, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Tim Connallon
- School of Biological Sciences, Monash University, Clayton, Australia
| | - Mark W Blows
- School of Biological Sciences, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Stephen F Chenoweth
- School of Biological Sciences, University of Queensland, St. Lucia, QLD, 4072, Australia
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11
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Iglesias-Carrasco M, Head ML, Jennions MD, Cabido C. Secondary compounds from exotic tree plantations change female mating preferences in the palmate newt (Lissotriton helveticus
). J Evol Biol 2017; 30:1788-1795. [DOI: 10.1111/jeb.13091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/26/2017] [Accepted: 04/07/2017] [Indexed: 01/18/2023]
Affiliation(s)
- M. Iglesias-Carrasco
- Department of Evolutionary Ecology; National Museum of Natural Sciences; Spanish National Research Council (CSIC); Madrid Spain
- Department of Herpetology; Aranzadi Science Society; Donostia-San Sebastián Spain
| | - M. L. Head
- Division of Evolution, Ecology and Genetics; Research School of Biology; Australian National University; Canberra ACT Australia
| | - M. D. Jennions
- Division of Evolution, Ecology and Genetics; Research School of Biology; Australian National University; Canberra ACT Australia
- Wissenschaftskolleg zu Berlin; Berlin Germany
| | - C. Cabido
- Department of Herpetology; Aranzadi Science Society; Donostia-San Sebastián Spain
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12
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Smith SRT, Connallon T. The contribution of the mitochondrial genome to sex‐specific fitness variance. Evolution 2017; 71:1417-1424. [DOI: 10.1111/evo.13238] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/13/2017] [Accepted: 03/17/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Shane R. T. Smith
- School of Biological Sciences Monash University Clayton VIC 3800 Australia
| | - Tim Connallon
- School of Biological Sciences Monash University Clayton VIC 3800 Australia
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13
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Prokop ZM, Prus MA, Gaczorek TS, Sychta K, Palka JK, Plesnar-Bielak A, Skarboń M. Do males pay for sex? Sex-specific selection coefficients suggest not. Evolution 2017; 71:650-661. [PMID: 27943275 DOI: 10.1111/evo.13151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 10/31/2016] [Accepted: 11/11/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Zofia M. Prokop
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Monika A. Prus
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Tomasz S. Gaczorek
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Karolina Sychta
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Joanna K. Palka
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Agata Plesnar-Bielak
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
| | - Magdalena Skarboń
- Institute of Environmental Sciences; Jagiellonian University; Gronostajowa 7 30-387 Krakow Poland
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14
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Berger D, Martinossi-Allibert I, Grieshop K, Lind MI, Maklakov AA, Arnqvist G. Intralocus Sexual Conflict and the Tragedy of the Commons in Seed Beetles. Am Nat 2016; 188:E98-E112. [DOI: 10.1086/687963] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Abstract
Mutation generates a steady supply of genetic variation that, while occasionally useful for adaptation, is more often deleterious for fitness. Recent research has emphasized that the fitness effects of mutations often differ between the sexes, leading to important evolutionary consequences for the maintenance of genetic variation and long-term population viability. Some forms of sex-specific selection-i.e., stronger purifying selection in males than females-can help purge a population's load of female-harming mutations and promote population growth. Other scenarios-e.g., sexually antagonistic selection, in which mutations that harm females are beneficial for males-inflate genetic loads and potentially dampen population viability. Evolutionary processes of sexual antagonism and purifying selection are likely to impact the evolutionary dynamics of different loci within a genome, yet theory has mostly ignored the potential for interactions between such loci to jointly shape the evolutionary genetic basis of female and male fitness variation. Here, we show that sexually antagonistic selection at a locus tends to elevate the frequencies of deleterious alleles at tightly linked loci that evolve under purifying selection. Moreover, haplotypes that segregate for different sexually antagonistic alleles accumulate different types of deleterious mutations. Haplotypes that carry female-benefit sexually antagonistic alleles preferentially accumulate mutations that are primarily male harming, whereas male-benefit haplotypes accumulate mutations that are primarily female harming. The theory predicts that sexually antagonistic selection should shape the genomic organization of genetic variation that differentially impacts female and male fitness, and contribute to sexual dimorphism in the genetic basis of fitness variation.
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16
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Grieshop K, Stångberg J, Martinossi-Allibert I, Arnqvist G, Berger D. Strong sexual selection in males against a mutation load that reduces offspring production in seed beetles. J Evol Biol 2016; 29:1201-10. [DOI: 10.1111/jeb.12862] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 01/15/2023]
Affiliation(s)
- K. Grieshop
- Department of Ecology and Genetics; Animal Ecology; Uppsala University; Uppsala Sweden
| | - J. Stångberg
- Department of Ecology and Genetics; Animal Ecology; Uppsala University; Uppsala Sweden
| | | | - G. Arnqvist
- Department of Ecology and Genetics; Animal Ecology; Uppsala University; Uppsala Sweden
| | - D. Berger
- Department of Ecology and Genetics; Animal Ecology; Uppsala University; Uppsala Sweden
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17
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Messina FJ, Durham SL. Loss of adaptation following reversion suggests trade-offs in host use by a seed beetle. J Evol Biol 2015. [DOI: 10.1111/jeb.12704] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- F. J. Messina
- Department of Biology; Utah State University; Logan UT USA
| | - S. L. Durham
- Ecology Center; Utah State University; Logan UT USA
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