Sex ratio – kokkonuts

Whether one is talking about primary sex ratio biases or the simpler fact that adults don’t always interact at balanced sex ratios, these biases are intriguing to understand and so are their (sometimes underappreciated and important) consequences.

pdf	Heinsohn, R., Au, J., Webb, MH., Deans, RM., Crates, R., Stojanovic, D. & Kokko, H. 2021. Can an introduced predator select for adaptive sex allocation? Proceedings of the Royal Society of London B 288: 20210093.
pdf	Gerber, N., Booksmythe, I. & Kokko, H. 2018. Sex allocation theory for facultatively sexual organisms inhabiting seasonal environments: the importance of bet-hedging. American Naturalist 192: 155-170.
pdf	Booksmythe, I., Gerber, N., Ebert, D. & Kokko, H. 2018. Daphnia females adjust sex allocation in response to current sex ratio and density. Ecology Letters 21: 629-637.
pdf	Gerber, N., Kokko, H., Ebert, D. & Booksmythe, I. 2018. Daphnia invest in sexual reproduction when its relative costs are reduced. Proceedings of the Royal Society of London B 285: 20172176.
pdf	Lindholm, A.K., Dyer, K.A., Firman, R.C., Fishman, L., Forstmeier, W., Holman, L., Johannesson, H., Knief, U., Kokko, H., Larracuente, A.M., Manser, A., Montchamp-Moreau, C., Petrosyan, V.G., Pomiankowski, A., Presgraves, D.C., Safronova, L.D., Sutter, A., Unckless, R.L., Verspoor, R. L., Wedell, N., Wilkinson, G.S. & Price, T.A.R. 2016. The ecology and evolutionary dynamics of meiotic drive. Trends in Ecology & Evolution 31 (4), 315-326.
pdf	Henshaw, J.M., Kokko, H. & Jennions, M.D. 2015. Direct reciprocity stabilises simultaneous hermaphroditism at high mating rates: a model of sex allocation with egg trading. Evolution 69: 2129–2139.
pdf	Kahn, A.T., Jennions, M.D. & Kokko, H. 2015. Sex allocation, juvenile mortality, and the costs imposed by offspring on parents and siblings. Journal of Evolutionary Biology 28: 428-437.
haiku Haiku! Close Entries by different coauthors: Why is drive stable? Coevolved polyandry! Our model says no How to deal with drive? Mating frequency matters. End of story? No. pdf	Holman, L., Price, T., Wedell, N. & Kokko, H. 2015. Coevolutionary dynamics of polyandry and sex-linked meiotic drive. Evolution 69-3: 709-720.
haiku Haiku! Close Entries by different coauthors: Guard her intensely When males are plentiful But not otherwise Till death do us part? Or the sight of someone new? Guidance: coloured maps.	Harts, A. & Kokko, H. 2013. Understanding promiscuity: when is seeking additional mates better than guarding an already found one? Evolution 67: 2838-2848.
haiku Haiku! Close Entries by different coauthors: Daughter, son, which one? Who will have more luck breeding? Girls: autumn, boys: spring. I'm an autumn boy. I am glad we are so few. She will outlive me. Opportunities Shall we make a boy or girl? Spring sex is macho pdf	Kahn, A.T., Kokko, H. & Jennions, M.D. 2013. Adaptive sex allocation in anticipation of changes in offspring mating opportunities. Nature Communications 4: 1603.
haiku Haiku! Close Entries by different coauthors: complexity curse many roads increase fitness beauty becomes dull So hard to raise young. Make them sexy, make them rare? Take it easy now. peacock or peasoup a scrambled egg to obscure rainbows fade away pdf	Booksmythe, I., Schwanz, L. & Kokko, H. 2013. The complex interplay of sex allocation and sexual selection. Evolution 67: 673-678.
pdf	Vahl, W., Boiteau, G., de Heij, M.E., MacKinley, P.D. & Kokko, H. 2013. Female fertilization: effects of sex-specific density and sex ratio determined experimentally for Colorado potato beetles and Drosophila fruit flies. PLoS one 8: e60381.
haiku Haiku! Close Entries by different coauthors: Deterministic. The world where it is easy To mate, and see why. No one is perfect O Heroin, Heroin I'd rather not, mate pdf	Jennions, M.D., Kokko, H. & Klug, H. 2012. The opportunity to be misled in studies of sexual selection. Journal of Evolutionary Biology 25: 591-598.
haiku Haiku! Close Entries by different coauthors: Evolution can Be difficult to predict So many outcomes My traits: chance or fate? One glance in this direction Sealed my future life pdf	Lehtonen, J. & Kokko, H. 2012. Positive feedback and alternative stable states in inbreeding, cooperation, sex roles and other evolutionary processes. Philosophical Transactions of the Royal Society of London B 367: 211-221.
haiku Haiku! Close Entries by different coauthors: Mum, why this hatred just because I am a boy? My sister will fly. Baby boys are slow I know my hollow will flood They must all die now pdf	Heinsohn, R., Langmore, N.E., Cockburn, A. & Kokko, H. 2011. Adaptive secondary sex ratio adjustments via sex-specific infanticide in a bird. Current Biology 21: 1744-1747.
pdf	Fromhage, L. & Kokko, H. 2010. Spatial seed and pollen games: dispersal, sex allocation, and the evolution of dioecy. Journal of Evolutionary Biology 23: 1947-1956.
pdf	Kokko, H. & Jennions, M.D. 2008. Parental investment, sexual selection and sex ratios. Journal of Evolutionary Biology 21: 919-948.
pdf	Heubel, K., Lindström, K. & Kokko, H. 2008. Females increase reproductive effort when future access to males is uncertain. Biology Letters 4: 224-227.