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Special feature
Special featureSex allocation conflict in insect societies: who wins?
Published:05 August 2009https://doi.org/10.1098/rsbl.2009.0501
Abstract
Sex allocation in colonies of eusocial Hymenoptera is one of the best studied social conflicts. We outline a framework for analysing conflict outcome through power and the costs of manipulation and suggest that the conflict will often be unresolved because both major parties of interest, the queen and the workers, should manipulate allocation even at considerable costs to the colony. We suggest future work for analysing power in the conflict between queen and workers over sex allocation and discuss the extent of male power.
References
Arnqvist G., Edvardsson M., Friberg U.& Nilsson T. . 2000Sexual conflict promotes speciation in insects. Proc. Natl Acad. Sci. USA 97, 10 460–10 464. (doi:10.1073/pnas.97.19.10460). Crossref, ISI, Google ScholarBeekman M.& Ratnieks F. L. W. . 2003Power over reproduction in social Hymenoptera. Phil. Trans. R. Soc. Lond. B 358, 1741–1753. (doi:10.1098/rstb.2002.1262). Link, ISI, Google ScholarBoomsma J. J., Nielsen J., Sundstrom L., Oldham N. J., Tentschert J., Petersen H. C.& Morgan E. D. . 2003Informational constraints on optimal sex allocation in ants. Proc. Natl Acad. Sci. USA 100, 8799–8804. (doi:10.1073/pnas.1430283100). Crossref, PubMed, ISI, Google ScholarBourke A. F. G. . 1989Comparative-analysis of sex-investment ratios in slave-making ants. Evolution 43, 913–918. (doi:10.2307/2409320). Crossref, PubMed, ISI, Google ScholarBourke A. F. G.& Franks N. R. . 1995Social evolution in ants. Princeton, NJ: Princeton University Press. Google ScholarColeman S. W., Harlin-Cognato A.& Jones A. G. . 2009Reproductive isolation, reproductive mode, and sexual selection: empirical tests of the viviparity-driven conflict hypothesis. Evolution 173, 291–303. Google Scholarde Menten L., Fournier D., Brent C., Passera L., Vargo E.& Aron S. . 2005Dual mechanism of queen influence over sex ratio in the ant Pheidole pallidula. Behav. Ecol. Sociobiol. 58, 527–533. Crossref, ISI, Google ScholarFoster K. R.& Ratnieks F. L. W. . 2001The effect of sex-allocation biasing on the evolution of worker policing in hymenopteran societies. Am. Nat. 158, 615–623. (doi:10.1086/323588). Crossref, PubMed, ISI, Google ScholarFournier D., Keller L., Passera L.& Aron S. . 2003Colony sex ratios vary with breeding system but not relatedness asymmetry in the facultatively polygynous ant Pheidole pallidula. Evolution 57, 1336–1342. Crossref, PubMed, ISI, Google ScholarHammond R. L., Bruford M. W.& Bourke A. F. G. . 2002Ant workers selfishly bias sex ratios by manipulating female development. Proc. R. Soc. Lond. B 269, 173–178. (doi:10.1098/rspb.2001.1860). Link, ISI, Google ScholarHelms K. R. . 1999Colony sex ratios, conflict between queens and workers, and apparent queen control in the ant Pheidole desertorum. Evolution 53, 1470–1478. (doi:10.2307/2640893). Crossref, PubMed, ISI, Google ScholarHelms K. R., Fewell J. H.& Rissing S. W. . 2000Sex ratio determination by queens and workers in the ant Pheidole desertorum. Anim. Behav. 59, 523–527. (doi:10.1006/anbe.1999.1343). Crossref, PubMed, ISI, Google ScholarHerbers J. M.& Stuart R. J. . 1998Patterns of reproduction in slave-making ants. Proc. R. Soc. Lond. B 265, 875–887. (doi:10.1098/rspb.1998.0373). Link, ISI, Google ScholarKronauer D. J. C. . 2008Genomic imprinting and kinship in the social Hymenoptera: what are the predictions?J. Theor. Biol. 254, 737–740. (doi:10.1016/j.jtbi.2008.06.019). Crossref, PubMed, ISI, Google ScholarKronforst M. R., Gilley D. C., Strassmann J. E.& Queller D. C. . 2008DNA methylation is widespread across social Hymenoptera. Curr. Biol. 18, R287–R288. (doi:10.1016/j.cub.2008.02.015). Crossref, PubMed, ISI, Google ScholarKümmerli R.& Keller L. In press. Patterns of split sex ratio in ants have multiple evolutionary causes based on different within-colony conflicts. Biol. Lett.. ISI, Google ScholarNonacs P.& Carlin N. F. . 1990When can ants discriminate the sex of brood: a new aspect of queen–worker conflict. Proc. Natl Acad. Sci. USA 87, 9670–9673. (doi:10.1073/pnas.87.24.9670). Crossref, PubMed, ISI, Google ScholarPamilo P. . 1982Genetic evolution of sex ratios in eusocial Hymenoptera: allele frequency simulations. Am. Nat. 119, 638–656. (doi:10.1086/283940). Crossref, ISI, Google ScholarParker G. A. . 2006Sexual conflict over mating and fertilization: an overview. Phil. Trans. R. Soc. B 361, 235–259. (doi:10.1098/rstb.2005.1785). Link, ISI, Google ScholarPassera L., Aron S., Vargo E. L.& Keller L. . 2001Queen control of sex ratio in fire ants. Science 293, 1308–1310. (doi:10.1126/science.1062076). Crossref, PubMed, ISI, Google ScholarPen I.& Taylor P. D. . 2005Modelling information exchange in worker–queen conflict over sex allocation. Proc. R. Soc. B 272, 2403–2408. (doi:10.1098/rspb.2005.3234). Link, ISI, Google ScholarQueller D. . 2003Theory of genomic imprinting conflict in social insects. BMC Evol. Biol. 3, 15. (doi:10.1186/1471-2148-3-15). Crossref, PubMed, ISI, Google ScholarRatnieks F. L. W., Foster K. R.& Wenseleers T. . 2006Conflict resolution in insect societies. Annu. Rev. Entomol. 51, 581–608. (doi:10.1146/annurev.ento.51.110104.151003). Crossref, PubMed, ISI, Google ScholarRatnieks F. L. W., Helantera H.& Foster K. R. . 2007Are mistakes inevitable? Sex allocation specialization by workers can reduce the genetic information needed to assess queen mating frequency. J. Theor. Biol. 244, 470–477. (doi:10.1016/j.jtbi.2006.09.003). Crossref, PubMed, ISI, Google ScholarReuter M.& Keller L. . 2001Sex ratio conflict and worker production in eusocial Hymenotera. Am. Nat. 158, 166–177. (doi:10.1086/321311). Crossref, PubMed, ISI, Google ScholarReuter M., Helms K. R., Lehmann L.& Keller L. . 2004Effects of brood manipulation costs on optimal sex allocation in social hymenoptera. Am. Nat. 164, E73–E82. (doi:10.1086/422659). Crossref, PubMed, ISI, Google ScholarRosset H.& Chapuisat M. . 2006Sex allocation conflict in ants: when the queen rules. Curr. Biol. 16, 328–331. (doi:10.1016/j.cub.2005.12.036). Crossref, PubMed, ISI, Google ScholarSummers K.& Crespi B. . 2005Cadherins in maternal–foetal interactions: red queen with a green beard?Proc. R. Soc. B 272, 643–649. (doi:10.1098/rspb.2004.2890). Link, ISI, Google ScholarSundström L., Chapuisat M.& Keller L. . 1996Conditional manipulation of sex ratios by ant workers: a test of kin selection theory. Science 274, 993–995. (doi:10.1126/science.274.5289.993). Crossref, PubMed, ISI, Google ScholarSundström L.& Boomsma J. J. . 2000Reproductive alliances and posthumous fitness enhancement in male ants. Proc. R. Soc. Lond. B 267, 1439–1444. (doi:10.1098/rspb.2000.1161). Link, ISI, Google ScholarSundström L.& Ratnieks F. L. W. . 1998Sex ratio conflicts, mating frequency, and queen fitness in the ant Formica truncorum. Behav. Ecol. 9, 116–121. (doi:10.1093/beheco/9.2.116). Crossref, ISI, Google ScholarTrivers R. L.& Hare H. . 1976Haplodiploidy and evolution of social insects. Science 191, 249–263. (doi:10.1126/science.1108197). Crossref, PubMed, ISI, Google ScholarWest S. A.& Sheldon B. C. . 2002Constraints in the evolution of sex ratio adjustment. Science 295, 1685–1688. (doi:10.1126/science.1069043). Crossref, PubMed, ISI, Google ScholarWigby S., Chapman T.& Pitnick S. . 2004Female resistance to male harm evolves in response to manipulation of sexual conflict. Evolution 58, 1028–1037. Crossref, PubMed, ISI, Google Scholar
