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Interlocus sexual conflict

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205: 308:. This ultimately leads to a decrease in female fitness, as increasing behaviours such as egg-laying can decrease the success of fertilization, delay remating, and impact the female's life span. In response to the negative effects of SPFs, female fruit flies have evolved resistance tactics to hyperactive males and refractoriness, resulting in interlocus sexual conflict. This has been supported in studies revealing the rapid evolution of SPF genes. 278: 164:(ICE), characterized by the coevolution of genes at different loci in a species through intergenomic conflict. In other words, a disequilibrium forms as alleles for reproductive traits are substituted at different loci in opposing sexes, resulting in rapid evolution of the trait at the locus, which further fuels an arms race between the sexes. 331:
conditions. In divergent populations, organisms will respond adaptively to local mates but not foreign mates. As a result, the female remating rate decreased significantly upon introduction of foreign males. Females are most resistant to males they coevolved with in local conditions, but show limited
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postulates that evolution of a trait in one species will drive antagonistic coevolution in an opposing species and can be used to explain coevolution in cases of predatory behaviour, host-parasite relationships, and sexual selection. Of interest to interlocus sexual conflict, the Red Queen hypothesis
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The first model of interlocus sexual conflict, the genetic threshold model, was developed by Parker to explain sexual conflict among yellow dung flies. Further investigation of sexual conflict theory remained relatively untouched until Rice predicted that genes for sexually antagonistic traits exist
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Sexual antagonistic coevolution is characterized by an arms race between the sexes in which one sex experiences changes in morphology or behaviour to compensate for the negative effects of the reproductive traits of the opposite sex. Both sexes strive to maintain an optimal fitness level, but do so
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differ in female fitness. When females are placed in enforced polyandrous or monogamous mating conditions, females from polyandrous conditions exhibit substantially reduced fitness, displaying decreased egg production, decreased number of offspring, and a shortened life span compared to monogamous
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that cause males to harm females during reproduction, proliferate within a population and initiate interlocus sexual conflict. In a population of fruit flies where a Y-linked harming allele decreases the fitness of a female mate, an indirect cost is imposed on the male's fitness. Consequently, the
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was enough to compensate for the direct impact of antagonistic coevolution on female fitness. However, the detrimental fitness impact in females singly-mated with a polyandrous male suggests adaptations to resist harm by males requires competition, and is therefore better explained by interlocus
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Importantly, many examples of sexual conflict are not categorized into interlocus sexual conflict or intralocus sexual conflict, as the genetic locations of the interacting alleles for these traits are not known or specified. It is critical to note when interpreting information regarding sexual
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of the experimental females. By reducing the attractiveness of the females expressing the trait, the mutation provided females with resistance to the direct costs of re-mating and male courtship. These results show that the resistance allele significantly accumulated in the experimental group,
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optima for the traits. A co-evolutionary arms race is established between the sexes in which either sex evolves a set of antagonistic adaptations that is detrimental to the fitness of the other sex. The potential for reproductive success in one organism is strengthened while the fitness of the
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Through Parker's genetic threshold model, it was discovered that female yellow dung flies can be injured in battles between male suitors. Males are selected to evolve traits for competitive ability that would increase their reproductive success, but females would evolve a set of antagonistic
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In a study examining fruit flies under polygamous and monogamous conditions, it was discovered that antagonistic coevolution decreases in monogamy, as the organisms mate with only one opposite-sex member and there is no competition among males to mate with the female.
188:. Conflict in which the antagonistic alleles are located at the same locus is termed intralocus sexual conflict. This occurs when males and females undergo different selective pressures at the same locus, resulting in either sex limiting the fitness of the other sex. 201:
at the expense of their mate's fitness. For interlocus sexual conflict to be a valid cause of antagonistic coevolution, the harm induced by the males across all loci has to outweigh the indirect benefits that the females gain by interacting with males.
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allows for the evolution of traits that enhance reproductive fitness. ICE extends from this hypothesis, proposing that antagonistic coevolution does not require opposing species, but can be applied to genes at different loci in a single species.
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Haerty, Wilfried; Jagadeeshan, Santosh; Kulathinal, Rob J.; Wong, Alex; Ravi Ram, Kristipati; Sirot, Laura K.; Levesque, Lisa; Artieri, Carlo G.; Wolfner, Mariana F.; Civetta, Alberto; Singh, Rama S. (November 2007).
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by females, and sperm are produced in much greater quantities. Consequently, males invest more energy into mating frequency, while females are choosier with mates and invest their energy into offspring quality.
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Chapman, Tracey; Liddle, Lindsay F.; Kalb, John M.; Wolfner, Mariana F.; Partridge, Linda (January 1995). "Cost of mating in Drosophila melanogaster females is mediated by male accessory gland products".
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harming allele is only favored in circumstances where the difference between offspring sired by harming males and normal males is greater for harming males, or harming males are at a fitness advantage.
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The chase-away sexual selection model, proposed by Holland and Rice, enabled the prediction that mating discrimination by females will drive the evolution of male display features toward extreme
50:, a species member will display reproductive characteristics that enhance their ability to reproduce, regardless of whether the fitness of their mate is negatively affected. 1282:
Aigaki, Toshiro; Fleischmann, Iréne; Chen, Pei-Shen; Kubli, Eric (October 1991). "Ectopic expression of sex peptide alters reproductive behavior of female D. melanogaster".
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Hollis, Brian; Koppik, Mareike; Wensing, Kristina U.; Ruhmann, Hanna; Genzoni, Eléonore; Erkosar, Berra; Kawecki, Tadeusz J.; Fricke, Claudia; Keller, Laurent (2019-04-08).
238:. Larger males have a competitive advantage in displacing the sperm of other males, enhancing the likelihood of their sperm fertilizing the eggs. This phenomenon is termed 300:
of male fruit flies contains seminal fluid proteins (SFPs) that play a significant role in determining female fitness. SPFs are capable of influencing processes such as
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Arnqvist, Goran; Rowe, Locke (1995-07-22). "Sexual conflict and arms races between the sexes: a morphological adaptation for control of mating in a female insect".
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Rice, William R.; Holland, Brett (1997-07-14). "The enemies within: intergenomic conflict, interlocus contest evolution (ICE), and the intraspecific Red Queen".
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demonstrated that alleles for reproductive traits will persist if they increase the fitness of one sex, regardless of the associated cost for their mate.
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drives male morphology. A model of antagonistic coevolution by Arnqvist and Rowe highlighted the example of abdominal spines in female water striders,
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Holland, Brett; Rice, William R. (February 1998). "Perspective: Chase-Away Sexual Selection: Antagonistic Seduction Versus Resistance".
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Well-evidenced examples come exclusively from the insect world, with the majority of research being conducted in yellow dung flies,
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opposite sex is weakened. Interlocus sexual conflict can arise due to aspects of male–female interactions such as mating frequency,
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As the sexes demonstrate a significant investment discrepancy for reproduction, interlocus sexual conflict can arise. To achieve
230:(SPFs), and aggressive behaviour attributable to their size to manipulate females during courtship. As yellow dung flies are a 34:, or the location of a gene on a chromosome, in males and females, resulting in the deviation of either or both sexes from the 293:
are a promiscuous species in which mate choice is a recurring event, fostering the development of interlocus sexual conflict.
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in both sexes, which led to the development of intralocus sexual conflict. Rice's genetic model of X-linkage influencing
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adaptations to reduce their chances of being injured during these interactions. Male yellow dung flies use pheromones,
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Andrés, J. A.; Morrow, E. H. (2003-02-10). "The origin of interlocus sexual conflict: is sex-linkage important?".
204: 1704: 351: 71: 1100:"The function of female accessory reproductive gland secretion and a cost to polyandry in the yellow dung fly" 320:
suggesting that the direct costs of male-courtship are greater than the indirect benefits of male-courtship.
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In another laboratory study, a mutation that reduces the attractiveness of females was introduced into the
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Chapman, Tracey; Herndon, Laura A.; Heifetz, Yael; Partridge, Linda; Wolfner, Mariana F. (2001-08-22).
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Assessing putative interlocus sexual conflict in Drosophila melanogaster using experimental evolution
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conflict that these terms are sometimes used interchangeably, despite this being incorrect.
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Schenkel, Martijn A.; Pen, Ido; Beukeboom, Leo W.; Billeter, Jean-Christophe (2018-12-11).
1699: 361: 51: 23: 1394:"The Drosophila seminal fluid protein Acp26Aa stimulates release of oocytes by the ovary" 1634:"Quantifying the gender load: can population crosses reveal interlocus sexual conflict?" 1528: 1409: 1229: 1010: 893: 722:
Rice, William R. (July 1984). "Sex Chromosomes and the Evolution of Sexual Dimorphism".
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Heifetz, Yael; Lung, Oliver; Frongillo, Edward A.; Wolfner, Mariana F. (January 2000).
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Bonduriansky, Russell; Chenoweth, Stephen F. (May 2009). "Intralocus sexual conflict".
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Examples outside of these taxa are theoretical, though currently not well studied.
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The evolutionary pathways resulting from interlocus sexual conflict form part of
1592: 1152:"Post–copulatory sexual selection and female fitness in Scathophaga stercoraria" 682: 503:"Two sexes, one genome: the evolutionary dynamics of intralocus sexual conflict" 297: 250:, and an enhanced ability to select sperm based on the fitness of male suitors. 243: 139: 123: 963: 261:
females after only one mating experience. Initially, it was suggested that the
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An expansion of Parker's genetic threshold model was later used to examine how
1577:"Evolution in the Fast Lane: Rapidly Evolving Sex-Related Genes in Drosophila" 247: 112: 1657: 1600: 1544: 1482: 1427: 1360: 1303: 1247: 1175: 1125: 1070: 1026: 971: 909: 850: 799: 743: 690: 643: 593: 534: 469: 1351: 1238: 305: 301: 180:
The genetic basis of the distinction between interlocus sexual conflict and
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Long, Tristan A.F; Montgomerie, Robert; Chippindale, Adam K (2006-01-04).
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Chapman, T; Arnqvist, G; Bangham, J; Rowe, L (2003). "Sexual conflict".
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Philosophical Transactions of the Royal Society B: Biological Sciences
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Philosophical Transactions of the Royal Society B: Biological Sciences
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species, females obtain sperm from multiple males which is stored for
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have been used to investigate the evolution of sexual traits under
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Martin, Oliver Y.; Hosken, David J.; Ward, Paul I. (2004-02-22).
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acts by using their spines as defense against aggressive males.
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Parker, G.A. (1979), "Sexual Selection and Sexual Conflict",
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that occurs through the interaction of a set of antagonistic
446:"Sexual conflict over mating and fertilization: an overview" 995:"Making sense of intralocus and interlocus sexual conflict" 414:
Sexual Selection and Reproductive Competition in Insects
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by males is substantially less biologically costly than
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Proceedings of the Royal Society B: Biological Sciences
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Proceedings of the Royal Society B: Biological Sciences
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Proceedings of the Royal Society B: Biological Sciences
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Stewart, Andrew D Morrow, Edward H Rice, William R.
1333:Avila, Frank W.; Wolfner, Mariana F. (2009-09-01). 667:"The Evolution of Sexually Antagonistic Phenotypes" 501:Pennell, Tanya M.; Morrow, Edward H. (2013-05-01). 1098:Hosken, D. J.; Uhia, E.; Ward, P. I. (June 2002). 138:. As a result, an arms race develops where female 184:is the location of the interacting antagonistic 1339:Proceedings of the National Academy of Sciences 1218:Proceedings of the National Academy of Sciences 160:Interlocus sexual conflict forms the basis for 665:Perry, Jennifer C.; Rowe, Locke (June 2015). 8: 1083:: CS1 maint: multiple names: authors list ( 931:Van Valen, Leigh. "A new evolutionary law". 242:. In response, females have evolved larger 70:. This has led to the proposal that sexual 671:Cold Spring Harbor Perspectives in Biology 1665: 1608: 1490: 1417: 1368: 1350: 1255: 1237: 1183: 1115: 1034: 698: 583: 542: 477: 74:is fueled by interlocus sexual conflict. 93:Interlocus sexual conflict differs from 372: 1076: 568:"Intra-sexual selection in Drosophila" 1277: 1275: 1207: 1205: 1203: 1145: 1143: 1056: 1054: 7: 773: 771: 769: 617: 615: 613: 611: 407: 405: 403: 624:Behavioral Ecology and Sociobiology 422:10.1016/b978-0-12-108750-0.50010-0 304:, sperm storage, and the onset of 14: 952:Trends in Ecology & Evolution 176:Versus intralocus sexual conflict 1117:10.1046/j.1365-3032.2002.00271.x 792:10.1046/j.1420-9101.2003.00525.x 780:Journal of Evolutionary Biology 382:Trends in Ecology and Evolution 332:defense against foreign males. 256:displaying either polyandry or 566:Bateman, A J (December 1948). 416:, Elsevier, pp. 123–166, 1: 1419:10.1016/s0960-9822(00)00288-8 394:10.1016/s0169-5347(02)00004-6 1296:10.1016/0896-6273(91)90368-a 357:Interlocus contest evolution 162:interlocus contest evolution 156:Interlocus contest evolution 111:at the same loci of the sex 64:interlocus contest evolution 1593:10.1534/genetics.107.078865 683:10.1101/cshperspect.a017558 1721: 964:10.1016/j.tree.2008.12.005 444:Parker, G.A (2006-02-28). 342:Intralocus sexual conflict 182:intralocus sexual conflict 95:intralocus sexual conflict 20:Interlocus sexual conflict 30:at two or more different 1104:Physiological Entomology 352:Antagonistic Coevolution 196:Antagonistic coevolution 72:antagonistic coevolution 1352:10.1073/pnas.0904029106 1239:10.1073/pnas.1821386116 325:Drosophila melanogaster 291:Drosophila melanogaster 284:Drosophila melanogaster 272:Drosophila melanogaster 254:Scathophaga stercoraria 220:Scathophaga stercoraria 211:Scathophaga stercoraria 86:Drosophila melanogaster 80:Scathophaga stercoraria 16:Type of sexual conflict 1650:10.1098/rstb.2005.1786 1475:10.1098/rspb.2001.1684 1168:10.1098/rspb.2003.2588 902:10.1098/rspb.1995.0126 462:10.1098/rstb.2005.1785 323:Reciprocal crosses of 287: 228:seminal fluid proteins 214: 1065:. The Royal Society. 999:Ecology and Evolution 636:10.1007/s002650050357 507:Ecology and Evolution 280: 207: 68:intergenomic conflict 1695:Evolutionary biology 347:Red Queen hypothesis 169:Red Queen hypothesis 126:harming alleles, or 48:reproductive success 1529:1995Natur.373..241C 1469:(1477): 1647–1654. 1410:2000CBio...10...99H 1345:(37): 15796–15800. 1230:2019PNAS..116.8437H 1011:2018EcoEv...813035S 1005:(24): 13035–13050. 933:Evolutionary Theory 894:1995RSPSB.261..123A 585:10.1038/hdy.1948.21 519:2013EcoEv...3.1819P 263:sexy son hypothesis 83:, and fruit flies, 288: 215: 101:Theory development 1644:(1466): 363–374. 1523:(6511): 241–244. 1224:(17): 8437–8444. 1162:(1537): 353–359. 1019:10.1002/ece3.4629 888:(1360): 123–127. 456:(1466): 235–259. 266:sexual conflict. 240:sperm competition 145:Gerris incognitus 117:sexual dimorphism 1712: 1705:Sexual selection 1680: 1679: 1669: 1629: 1623: 1622: 1612: 1587:(3): 1321–1335. 1571: 1565: 1564: 1537:10.1038/373241a0 1511: 1505: 1504: 1494: 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1387: 1342: 1338: 1328: 1287: 1283: 1221: 1217: 1159: 1155: 1110:(2): 87–91. 1107: 1103: 1093: 1062: 1002: 998: 988: 955: 951: 945: 936: 932: 926: 885: 881: 875: 834: 830: 824: 783: 779: 727: 723: 717: 674: 670: 660: 627: 623: 575: 571: 561: 510: 506: 496: 453: 449: 439: 413: 385: 381: 375: 324: 322: 314: 310: 295: 290: 289: 282: 271: 253: 252: 244:spermathecae 224: 219: 209: 199: 190: 179: 166: 159: 143: 133: 121: 109: 92: 84: 78: 76: 61: 45: 19: 18: 630:(1): 1–10. 248:spermicides 232:polyandrous 140:mate choice 113:chromosomes 1689:Categories 837:(1): 1–7. 368:References 329:allopatric 150:copulatory 136:phenotypes 124:sex-linked 1658:0962-8436 1601:0016-6731 1545:0028-0836 1483:0962-8452 1428:0960-9822 1361:0027-8424 1304:0896-6273 1248:0027-8424 1176:0962-8452 1126:0307-6962 1079:cite book 1071:678851562 1027:2045-7758 972:0169-5347 910:0962-8452 851:0014-3820 831:Evolution 800:1010-061X 744:0014-3820 724:Evolution 691:1943-0264 644:0340-5443 594:0018-067X 535:2045-7758 470:0962-8436 388:: 41–47. 306:ovulation 302:oogenesis 298:ejaculate 1676:16612894 1619:18039869 1581:Genetics 1501:11506676 1444:14117465 1436:10662669 1379:19805225 1320:38400344 1266:30962372 1194:15101693 1134:85362662 1045:30619603 980:19307043 918:85175671 867:28568154 816:31832137 808:14635860 760:28555827 709:26032715 602:18103134 572:Heredity 553:23789088 488:16612884 336:See also 258:monogamy 1667:1569607 1610:2147986 1561:4336339 1553:7816137 1525:Bibcode 1492:1088790 1406:Bibcode 1370:2747198 1312:1931051 1257:6486729 1226:Bibcode 1185:1691601 1036:6309128 1007:Bibcode 939:: 1–30. 890:Bibcode 859:2410914 752:2408385 700:4448611 544:3686212 515:Bibcode 479:1569603 186:alleles 36:fitness 28:alleles 1700:Mating 1674:  1664:  1656:  1617:  1607:  1599:  1559:  1551:  1543:  1517:Nature 1499:  1489:  1481:  1442:  1434:  1426:  1377:  1367:  1359:  1318:  1310:  1302:  1284:Neuron 1264:  1254:  1246:  1192:  1182:  1174:  1132:  1124:  1069:  1043:  1033:  1025:  978:  970:  916:  908:  865:  857:  849:  814:  806:  798:  758:  750:  742:  707:  697:  689:  652:206228 650:  642:  600:  592:  551:  541:  533:  486:  476:  468:  428:  317:genome 106:Models 1557:S2CID 1440:S2CID 1316:S2CID 1130:S2CID 914:S2CID 855:JSTOR 812:S2CID 748:JSTOR 648:S2CID 1672:PMID 1654:ISSN 1615:PMID 1597:ISSN 1549:PMID 1541:ISSN 1497:PMID 1479:ISSN 1432:PMID 1424:ISSN 1375:PMID 1357:ISSN 1308:PMID 1300:ISSN 1262:PMID 1244:ISSN 1190:PMID 1172:ISSN 1122:ISSN 1085:link 1067:OCLC 1041:PMID 1023:ISSN 976:PMID 968:ISSN 906:ISSN 863:PMID 847:ISSN 804:PMID 796:ISSN 756:PMID 740:ISSN 705:PMID 687:ISSN 640:ISSN 598:PMID 590:ISSN 549:PMID 531:ISSN 484:PMID 466:ISSN 426:ISBN 296:The 167:The 32:loci 1662:PMC 1646:doi 1642:361 1605:PMC 1589:doi 1585:177 1533:doi 1521:373 1487:PMC 1471:doi 1467:268 1414:doi 1365:PMC 1347:doi 1343:106 1292:doi 1252:PMC 1234:doi 1222:116 1180:PMC 1164:doi 1160:271 1112:doi 1031:PMC 1015:doi 960:doi 898:doi 886:261 839:doi 788:doi 732:doi 695:PMC 679:doi 632:doi 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Index

sexual conflict
alleles
loci
fitness
fertilization
reproductive success
Sperm production
egg production
interlocus contest evolution
intergenomic conflict
antagonistic coevolution
Scathophaga stercoraria
Drosophila melanogaster
intralocus sexual conflict
chromosomes
sexual dimorphism
sex-linked
mutant alleles
phenotypes
mate choice
Gerris incognitus
copulatory
interlocus contest evolution
Red Queen hypothesis
intralocus sexual conflict
alleles

Scathophaga stercoraria
seminal fluid proteins
polyandrous

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