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Archer CR, Hosken DJ. Introduction to topical collection “Sexual selection, sexual conflict and aging”. Behav Ecol Sociobiol 2023. [DOI: 10.1007/s00265-023-03295-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Önder BŞ, Aksoy CF. Seasonal variation in wing size and shape of Drosophila melanogaster reveals rapid adaptation to environmental changes. Sci Rep 2022; 12:14622. [PMID: 36028640 PMCID: PMC9418266 DOI: 10.1038/s41598-022-18891-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/22/2022] [Indexed: 11/10/2022] Open
Abstract
Populations in seasonal fluctuating environments receive multiple environmental cues and must deal with this heterogenic environment to survive and reproduce. An enlarged literature shows that this situation can be resolved through rapid adaptation in Drosophila melanogaster populations. Long-term monitoring of a population in its natural habitat and quantitative measurement of its responses to seasonal environmental changes are important for understanding the adaptive response of D. melanogaster to temporal variable selection. Here, we use inbred lines of a D. melanogaster population collected at monthly intervals between May to October over a temporal scale spanning three consecutive years to understand the variation in wing size and wing shape over these timepoints. The wing size and shape of this population changed significantly between months and a seasonal cycle of this traits is repeated for three years. Our results suggest that the effects of environmental variables that generated variation in body size between populations such as latitudinal clines, are a selective pressure in a different manner in terms of seasonal variation. Temperature related variable have a significant nonlinear relation to this fluctuating pattern in size and shape, whereas precipitation and humidity have a sex-specific effect which is more significant in males.
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Affiliation(s)
- Banu Şebnem Önder
- Genetic Variation and Adaptation Laboratory, Department of Biology, Faculty of Science, Hacettepe University, Ankara, Turkey.
| | - Cansu Fidan Aksoy
- Genetic Variation and Adaptation Laboratory, Department of Biology, Faculty of Science, Hacettepe University, Ankara, Turkey
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Jayaraj P, Sarkar P, Routh S, Sarathe C, Rajagopal D, Thirumurugan K. A promising discovery of anti-aging chemical conjugate derived from lipoic acid and sesamol established in Drosophila melanogaster. NEW J CHEM 2022. [DOI: 10.1039/d2nj00720g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phytonutrients, lipoic acid and sesamol, were chemically combined to yield medically important lipoic acid-sesamol conjugate (LSC). NMR and LC-MS/MS techniques were used to determine the chemical structure of LSC. The...
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Rostant WG, Mason JS, de Coriolis JC, Chapman T. Resource-dependent evolution of female resistance responses to sexual conflict. Evol Lett 2020; 4:54-64. [PMID: 32055411 PMCID: PMC7006461 DOI: 10.1002/evl3.153] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 01/31/2023] Open
Abstract
Sexual conflict can promote the evolution of dramatic reproductive adaptations as well as resistance to its potentially costly effects. Theory predicts that responses to sexual conflict will vary significantly with resource levels—when scant, responses should be constrained by trade‐offs, when abundant, they should not. However, this can be difficult to test because the evolutionary interests of the sexes align upon short‐term exposure to novel environments, swamping any selection due to sexual conflict. What is needed are investigations of populations that are well adapted to both differing levels of sexual conflict and resources. Here, we used this approach in a long‐term experimental evolution study to track the evolution of female resistance to sexual conflict in the fruit fly Drosophila melanogaster. In resource‐rich regimes, high‐conflict females evolved resistance to continual exposure to males. There was no difference in baseline survival, consistent with the idea that responses evolving under nutritional abundance experienced no trade‐offs with resistance. In the poor resource regimes, the ability of high‐conflict females to evolve resistance to males was severely compromised and they also showed lower baseline survival than low‐conflict females. This suggested high‐conflict females traded off somatic maintenance against any limited resistance they had evolved in response to sexual conflict. Overall, these findings provide experimental support for the hypothesis that evolutionary responses to sexual conflict are critically dependent upon resource levels.
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Affiliation(s)
- Wayne G Rostant
- School of Biological Sciences University of East Anglia Norwich NR4 7TJ United Kingdom
| | - Janet S Mason
- School of Biological Sciences University of East Anglia Norwich NR4 7TJ United Kingdom
| | | | - Tracey Chapman
- School of Biological Sciences University of East Anglia Norwich NR4 7TJ United Kingdom
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Li GY, Zhang ZQ. Development, lifespan and reproduction of spider mites exposed to predator-induced stress across generations. Biogerontology 2019; 20:871-882. [DOI: 10.1007/s10522-019-09835-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/14/2019] [Indexed: 01/02/2023]
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Duffy E, Archer CR, Sharma MD, Prus M, Joag RA, Radwan J, Wedell N, Hosken DJ. Wolbachia infection can bias estimates of intralocus sexual conflict. Ecol Evol 2019; 9:328-338. [PMID: 30680117 PMCID: PMC6342094 DOI: 10.1002/ece3.4744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/30/2018] [Accepted: 11/01/2018] [Indexed: 12/19/2022] Open
Abstract
Males and females share most of their genome and develop many of the same traits. However, each sex frequently has different optimal values for these shared traits, creating intralocus sexual conflict. This conflict has been observed in wild and laboratory populations of insects and affects important evolutionary processes such as sexual selection, the maintenance of genetic variation, and possibly even speciation. Given the broad impacts of intralocus conflict, accurately detecting and measuring it is important. A common way to detect intralocus sexual conflict is to calculate the intersexual genetic correlation for fitness, with negative values suggesting conflict. Here, we highlight a potential confounder of this measure-cytoplasmic incompatibility caused by the intracellular parasite Wolbachia. Infection with Wolbachia can generate negative intersexual genetic correlations for fitness in insects, suggestive of intralocus sexual conflict. This is because cytoplasmic incompatibility reduces the fitness of uninfected females mated to infected males, while uninfected males will not suffer reductions in fitness if they mate with infected females and may even be fitter than infected males. This can lead to strong negative intersexual genetic correlations for fitness, mimicking intralocus conflict. We illustrate this issue using simulations and then present Drosophila simulans data that show how reproductive incompatibilities caused by Wolbachia infection can generate signals of intralocus sexual conflict. Given that Wolbachia infection in insect populations is pervasive, but populations usually contain both infected and uninfected individuals providing scope for cytoplasmic incompatibility, this is an important consideration for sexual conflict research but one which, to date, has been largely underappreciated.
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Affiliation(s)
- Eoin Duffy
- Institute of Environmental SciencesJagiellonian UniversityKrakowPoland
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
| | - C. Ruth Archer
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
| | - Manmohan Dev Sharma
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
| | - Monika Prus
- Institute of Environmental SciencesJagiellonian UniversityKrakowPoland
| | - Richa A. Joag
- Institute of Environmental SciencesJagiellonian UniversityKrakowPoland
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
| | - Jacek Radwan
- Institute of Environmental SciencesJagiellonian UniversityKrakowPoland
- Faculty of BiologyAdam Mickiewicz UniversityPoznańPoland
| | - Nina Wedell
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
| | - David J. Hosken
- Science and Engineering Research Support Facility (SERSF)University of ExeterPenrynUK
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Sutter A, Barton S, Sharma MD, Basellini U, Hosken DJ, Archer CR. Senescent declines in elite tennis players are similar across the sexes. Behav Ecol 2018. [DOI: 10.1093/beheco/ary112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Andreas Sutter
- Science and Engineering Research Support Facility, Centre for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - Sam Barton
- Science and Engineering Research Support Facility, Centre for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - Manmohan Dev Sharma
- Science and Engineering Research Support Facility, Centre for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - Ugofilippo Basellini
- Institut national d’études démographiques (INED), Paris, France
- Center on Population Dynamics and Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - David J Hosken
- Science and Engineering Research Support Facility, Centre for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - C Ruth Archer
- Science and Engineering Research Support Facility, Centre for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
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Duxbury EML, Rostant WG, Chapman T. Manipulation of feeding regime alters sexual dimorphism for lifespan and reduces sexual conflict in Drosophila melanogaster. Proc Biol Sci 2018; 284:rspb.2017.0391. [PMID: 28469030 PMCID: PMC5443951 DOI: 10.1098/rspb.2017.0391] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/05/2017] [Indexed: 01/10/2023] Open
Abstract
Sexual dimorphism for lifespan (SDL) is widespread, but poorly understood. A leading hypothesis, which we test here, is that strong SDL can reduce sexual conflict by allowing each sex to maximize its sex-specific fitness. We used replicated experimental evolution lines of the fruit fly, Drosophila melanogaster, which had been maintained for over 360 generations on either unpredictable ‘Random’ or predictable ‘Regular’ feeding regimes. This evolutionary manipulation of feeding regime led to robust, enhanced SDL in Random over control, Regular lines. Enhanced SDL was associated with a significant increase in the fitness of focal males, tested with wild-type (WT) females. This was due to sex-specific changes to male life history, manifested as increased early reproductive output and reduced survival. In contrast, focal female fitness, tested with WT males, did not differ across regimes. Hence increased SDL was associated with a reduction in sexual conflict, which increased male fitness and maintained fitness in females. Differences in SDL were not associated with developmental time or developmental survival. Overall, the results showed that the expression of enhanced SDL, resulting from experimental evolution of feeding regimes, was associated with male-specific changes in life history, leading to increased fitness and reduced sexual conflict.
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Affiliation(s)
- Elizabeth M L Duxbury
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7HP, UK.,Department of Genetics, University of Cambridge, Downing Street, Cambridge, CB2 3EH, UK
| | - Wayne G Rostant
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7HP, UK
| | - Tracey Chapman
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7HP, UK
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Lenart P, Bienertová-Vašků J. Keeping up with the Red Queen: the pace of aging as an adaptation. Biogerontology 2016; 18:693-709. [PMID: 28013399 DOI: 10.1007/s10522-016-9674-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 12/19/2016] [Indexed: 12/25/2022]
Abstract
For decades, a vast majority of biogerontologists assumed that aging is not and cannot be an adaptation. In recent years, however, several authors opposed this predominant view and repeatedly suggested that not only is aging an adaptation but that it is the result of a specific aging program. This issue almost instantaneously became somewhat controversial and many important authors produced substantial works refuting the notion of the aging program. In this article we review the current state of the debate and list the most important arguments proposed by both sides. Furthermore, although classical interpretations of the evolution of aging are in sharp contrast with the idea of programmed aging, we suggest that the truth might in fact very well lie somewhere in between. We also propose our own interpretation which states that although aging is in essence inevitable and results from damage accumulation rather than from a specific program, the actual rate of aging in nature may still be adaptive to some extent.
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Affiliation(s)
- Peter Lenart
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, 625 00, Brno, Czech Republic.
| | - Julie Bienertová-Vašků
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, 625 00, Brno, Czech Republic.,Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, Building A29, 625 00, Brno, Czech Republic
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Mokkonen M, Koskela E, Mappes T, Mills SC. Evolutionary Conflict Between Maternal and Paternal Interests: Integration with Evolutionary Endocrinology. Integr Comp Biol 2016; 56:146-58. [DOI: 10.1093/icb/icw053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
William Hamilton argued that even species inhabiting the farthest flung corners of the universe should age. However, a recent study shows that to find a species that escapes ageing, you only need to look as far as your local pond.
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Affiliation(s)
- C Ruth Archer
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Tremough Campus, TR10 9EZ, UK.
| | - David J Hosken
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Tremough Campus, TR10 9EZ, UK
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