Dr Jussi Lehtonen

A12 - Macleay Building
The University of Sydney

Biographical details

I have a long-standing interest in both mathematics and biology. Hence I have combined the two, in my MSc studies at the University of Helsinki in Finland, during my PhD studies at the Australian National University (completed in 2013, supervised by Prof. Hanna Kokko), and in my subsequent research.

After my PhD, I have been a postdoc at the University of Basel in Switzerland (funded by a Kone Foundation research grant), a Vice-Chancellor’s postdoctoral research fellow at the University of New South Wales in Australia, and I am now an ARC DECRA fellow at the University of Sydney. In 2018, I was awarded the title of Docent in ecology and evolutionary biology by the University of Helsinki.

Research interests

I am interested in a wide range of questions in evolutionary biology and ecology, particularly those at the interface of biology and mathematics. I work on methodological projects, as well as applications of methods to specific biological questions.

On the methodological side, I am particularly interested in conceptual and mathematical unification of modelling approaches in evolutionary biology. I have attempted to clarify the link between different approaches to social evolution theory (kin selection, multilevel selection, group selection, contextual analysis and so on). I have also used the Price equation as a tool to unify aspects of evolutionary game theory.

This work on methodology links back to, and has direct applications in the biological questions that I have worked on.

On the biological side, a large part of my work concerns the ancestral evolutionary origin of the two sexes, and the subsequent consequences of this transition. Keeping aside the complicated issue of gender in humans, the biological definition of the male and female sexes is very simple: if there are two differently sized gametes, then the type that produces the larger gametes (e.g. eggs) is called, by definition, female, and the producer of the smaller gametes (e.g. sperm) is male. But what caused this divergence in gamete sizes, which has taken place several times in evolutionary history? And what consequences does this simple divergence have for the subsequent evolution of the two sexes?

Whether working on a specific biological question, or on a methodological topic, some of the most interesting problems to me are those that reveal underlying simplicities in seemingly complicated things, and those that reveal connections between seemingly different phenomena.

Selected grants

2018

  • Unifying cornerstones of social evolution: Theory and application; Lehtonen J; Australian Research Council (ARC)/Discovery Early Career Researcher Award (DECRA).

Selected publications

Download citations: PDF RTF Endnote

Journals

  • Lehtonen, J., Schwanz, L. (2018). Mate limitation and sex ratio evolution. Royal Society Open Science, 5(2), 1-9. [More Information]
  • Hooper, A., Lehtonen, J., Schwanz, L., Bonduriansky, R. (2018). Sexual competition and the evolution of condition-dependent ageing. Evolution Letters, 2(1), 37-48. [More Information]
  • Li, X., Lehtonen, J., Hanna, K. (2018). Sexual reproduction as bet-hedging. Cold Spring Harbor Laboratory Symposia on Quantitative Biology, , 1-38. [More Information]
  • Parker, G., Ramm, S., Lehtonen, J., Henshaw, J. (2018). The evolution of gonad expenditure and gonadosomatic index (GSI) in male and female broadcast-spawning invertebrates. Biological Reviews, 93(2), 693-753. [More Information]
  • Lehtonen, J. (2018). The price equation, gradient dynamics, and continuous trait game theory. The American Naturalist, 191(1), 146-153. [More Information]
  • Umbers, K., De Bona, S., White, T., Lehtonen, J., Mappes, J., Endler, J. (2017). Deimatism: a neglected component of antipredator defence. Biology Letters, 13(4), 1-5. [More Information]
  • Stelzer, C., Lehtonen, J. (2016). Diapause and maintenance of facultative sexual reproductive strategies. Philosophical Transactions of the Royal Society B, 371(1706), 1-13. [More Information]
  • Lehtonen, J. (2016). Multilevel Selection in Kin Selection Language. Trends in Ecology and Evolution, 31(10), 752-762. [More Information]
  • Lehtonen, J., Jaatinen, K. (2016). Safety in numbers: the dilution effect and other drivers of group life in the face of danger. Behavioral Ecology and Sociobiology, 70(4), 449-458. [More Information]
  • Lehtonen, J. (2016). The Lambert W function in ecological and evolutionary models. Methods in Ecology and Evolution, 7(9), 1110-1118. [More Information]
  • Lehtonen, J., Kokko, H., Parker, G. (2016). What do isogamous organisms teach us about sex and the two sexes? Philosophical Transactions of the Royal Society B, 371(1706). [More Information]
  • Lehtonen, J., Parker, G., Scharer, L. (2016). Why anisogamy drives ancestral sex roles. Evolution, 70(5), 1129-1135. [More Information]
  • Umbers, K., Lehtonen, J., Mappes, J. (2015). Deimatic displays. Current Biology, 25(2), R58-R59. [More Information]
  • Lehtonen, J. (2015). Models of fertilization kinetics. Royal Society Open Science, 2(9). [More Information]
  • Lehtonen, J., Kokko, H. (2015). Why inclusive fitness can make it adaptive to produce less fit extra-pair offspring. Proceedings of the Royal Society B: Biological Sciences, 282(1801). [More Information]
  • Lehtonen, J., Parker, G. (2014). Gamete competition, gamete limitation, and the evolution of the two sexes. Molecular Human Reproduction, 20(12), 1161-1168. [More Information]
  • Parker, G., Lehtonen, J. (2014). Gamete evolution and sperm numbers: Sperm competition versus sperm limitation. Proceedings of the Royal Society B: Biological Sciences, 281(1791). [More Information]
  • Lehtonen, J., Lanfear, R. (2014). Generation time, life history and the substitution rate of neutral mutations. Biology Letters, 10(11). [More Information]
  • Lehtonen, J., Kokko, H. (2014). Sex. Current Biology, 24(8), R305-R306. [More Information]
  • Lehtonen, J., Whitehead, M. (2014). Sexual deception: Coevolution or inescapable exploitation? Current Zoology, 60(1), 52-61. [More Information]
  • Jalasvuori, M., Lehtonen, J. (2014). Virus epidemics can lead to a population-wide spread of intragenomic parasites in a previously parasite-free asexual population. Molecular Ecology, 23(5), 987-991. [More Information]
  • Lehtonen, J., Schmidt, D., Heubel, K., Kokko, H. (2013). Evolutionary and ecological implications of sexual parasitism. Trends in Ecology and Evolution, 28(5), 297-306. [More Information]
  • 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 B, 367(1586), 211-221. [More Information]
  • 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 B, 367(1586), 211-221. [More Information]
  • Lehtonen, J., Jennions, M., Kokko, H. (2012). The many costs of sex. Trends in Ecology and Evolution, 27(3), 172-178. [More Information]
  • Mokkonen, M., Kokko, H., Koskela, E., Lehtonen, J., Mappes, T., Martiskainen, H., Mills, S. (2011). Negative Frequency-Dependent Selection of Sexually Antagonistic Alleles in Myodes glareolus. Science, 334(6058), 972-974. [More Information]
  • Jaatinen, K., Lehtonen, J., Kokko, H. (2011). Strategy selection under conspecific brood parasitism: an integrative modeling approach. Behavioral Ecology, 22(1), 144-155. [More Information]
  • Lehtonen, J., Kokko, H. (2011). Two roads to two sexes: unifying gamete competition and gamete limitation in a single model of anisogamy evolution. Behavioral Ecology and Sociobiology, 65(3), 445-459. [More Information]

2018

  • Lehtonen, J., Schwanz, L. (2018). Mate limitation and sex ratio evolution. Royal Society Open Science, 5(2), 1-9. [More Information]
  • Hooper, A., Lehtonen, J., Schwanz, L., Bonduriansky, R. (2018). Sexual competition and the evolution of condition-dependent ageing. Evolution Letters, 2(1), 37-48. [More Information]
  • Li, X., Lehtonen, J., Hanna, K. (2018). Sexual reproduction as bet-hedging. Cold Spring Harbor Laboratory Symposia on Quantitative Biology, , 1-38. [More Information]
  • Parker, G., Ramm, S., Lehtonen, J., Henshaw, J. (2018). The evolution of gonad expenditure and gonadosomatic index (GSI) in male and female broadcast-spawning invertebrates. Biological Reviews, 93(2), 693-753. [More Information]
  • Lehtonen, J. (2018). The price equation, gradient dynamics, and continuous trait game theory. The American Naturalist, 191(1), 146-153. [More Information]

2017

  • Umbers, K., De Bona, S., White, T., Lehtonen, J., Mappes, J., Endler, J. (2017). Deimatism: a neglected component of antipredator defence. Biology Letters, 13(4), 1-5. [More Information]

2016

  • Stelzer, C., Lehtonen, J. (2016). Diapause and maintenance of facultative sexual reproductive strategies. Philosophical Transactions of the Royal Society B, 371(1706), 1-13. [More Information]
  • Lehtonen, J. (2016). Multilevel Selection in Kin Selection Language. Trends in Ecology and Evolution, 31(10), 752-762. [More Information]
  • Lehtonen, J., Jaatinen, K. (2016). Safety in numbers: the dilution effect and other drivers of group life in the face of danger. Behavioral Ecology and Sociobiology, 70(4), 449-458. [More Information]
  • Lehtonen, J. (2016). The Lambert W function in ecological and evolutionary models. Methods in Ecology and Evolution, 7(9), 1110-1118. [More Information]
  • Lehtonen, J., Kokko, H., Parker, G. (2016). What do isogamous organisms teach us about sex and the two sexes? Philosophical Transactions of the Royal Society B, 371(1706). [More Information]
  • Lehtonen, J., Parker, G., Scharer, L. (2016). Why anisogamy drives ancestral sex roles. Evolution, 70(5), 1129-1135. [More Information]

2015

  • Umbers, K., Lehtonen, J., Mappes, J. (2015). Deimatic displays. Current Biology, 25(2), R58-R59. [More Information]
  • Lehtonen, J. (2015). Models of fertilization kinetics. Royal Society Open Science, 2(9). [More Information]
  • Lehtonen, J., Kokko, H. (2015). Why inclusive fitness can make it adaptive to produce less fit extra-pair offspring. Proceedings of the Royal Society B: Biological Sciences, 282(1801). [More Information]

2014

  • Lehtonen, J., Parker, G. (2014). Gamete competition, gamete limitation, and the evolution of the two sexes. Molecular Human Reproduction, 20(12), 1161-1168. [More Information]
  • Parker, G., Lehtonen, J. (2014). Gamete evolution and sperm numbers: Sperm competition versus sperm limitation. Proceedings of the Royal Society B: Biological Sciences, 281(1791). [More Information]
  • Lehtonen, J., Lanfear, R. (2014). Generation time, life history and the substitution rate of neutral mutations. Biology Letters, 10(11). [More Information]
  • Lehtonen, J., Kokko, H. (2014). Sex. Current Biology, 24(8), R305-R306. [More Information]
  • Lehtonen, J., Whitehead, M. (2014). Sexual deception: Coevolution or inescapable exploitation? Current Zoology, 60(1), 52-61. [More Information]
  • Jalasvuori, M., Lehtonen, J. (2014). Virus epidemics can lead to a population-wide spread of intragenomic parasites in a previously parasite-free asexual population. Molecular Ecology, 23(5), 987-991. [More Information]

2013

  • Lehtonen, J., Schmidt, D., Heubel, K., Kokko, H. (2013). Evolutionary and ecological implications of sexual parasitism. Trends in Ecology and Evolution, 28(5), 297-306. [More Information]

2012

  • 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 B, 367(1586), 211-221. [More Information]
  • 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 B, 367(1586), 211-221. [More Information]
  • Lehtonen, J., Jennions, M., Kokko, H. (2012). The many costs of sex. Trends in Ecology and Evolution, 27(3), 172-178. [More Information]

2011

  • Mokkonen, M., Kokko, H., Koskela, E., Lehtonen, J., Mappes, T., Martiskainen, H., Mills, S. (2011). Negative Frequency-Dependent Selection of Sexually Antagonistic Alleles in Myodes glareolus. Science, 334(6058), 972-974. [More Information]
  • Jaatinen, K., Lehtonen, J., Kokko, H. (2011). Strategy selection under conspecific brood parasitism: an integrative modeling approach. Behavioral Ecology, 22(1), 144-155. [More Information]
  • Lehtonen, J., Kokko, H. (2011). Two roads to two sexes: unifying gamete competition and gamete limitation in a single model of anisogamy evolution. Behavioral Ecology and Sociobiology, 65(3), 445-459. [More Information]

To update your profile click here. For support on your academic profile contact .