The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness
The evolution of anisogamy or gamete size dimorphism is a fundamental transition in evolutionary history, and it is the origin of the female and male sexes. Although mathematical models attempting to explain this transition have been published as early as 1932, the 1972 model of Parker, Baker, and S...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Cells |
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| Online Access: | https://www.mdpi.com/2073-4409/10/3/573 |
| _version_ | 1797413454831681536 |
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| author | Jussi Lehtonen |
| author_facet | Jussi Lehtonen |
| author_sort | Jussi Lehtonen |
| collection | DOAJ |
| description | The evolution of anisogamy or gamete size dimorphism is a fundamental transition in evolutionary history, and it is the origin of the female and male sexes. Although mathematical models attempting to explain this transition have been published as early as 1932, the 1972 model of Parker, Baker, and Smith is considered to be the first explanation for the evolution of anisogamy that is consistent with modern evolutionary theory. The central idea of the model is ingenious in its simplicity: selection simultaneously favours large gametes for zygote provisioning, and small gametes for numerical competition, and under certain conditions the outcome is anisogamy. In this article, I derive novel analytical solutions to a 2002 game theoretical update of the 1972 anisogamy model, and use these solutions to examine its robustness to variation in its central assumptions. Combining new results with those from earlier papers, I find that the model is quite robust to variation in its central components. This kind of robustness is crucially important in a model for an early evolutionary transition where we may only have an approximate understanding of constraints that the different parts of the model must obey. |
| first_indexed | 2024-03-09T05:19:12Z |
| format | Article |
| id | doaj.art-74bc95230ab74487a99206728c99213e |
| institution | Directory Open Access Journal |
| issn | 2073-4409 |
| language | English |
| last_indexed | 2024-03-09T05:19:12Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Cells |
| spelling | doaj.art-74bc95230ab74487a99206728c99213e2023-12-03T12:42:46ZengMDPI AGCells2073-44092021-03-0110357310.3390/cells10030573The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model RobustnessJussi Lehtonen0Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, AustraliaThe evolution of anisogamy or gamete size dimorphism is a fundamental transition in evolutionary history, and it is the origin of the female and male sexes. Although mathematical models attempting to explain this transition have been published as early as 1932, the 1972 model of Parker, Baker, and Smith is considered to be the first explanation for the evolution of anisogamy that is consistent with modern evolutionary theory. The central idea of the model is ingenious in its simplicity: selection simultaneously favours large gametes for zygote provisioning, and small gametes for numerical competition, and under certain conditions the outcome is anisogamy. In this article, I derive novel analytical solutions to a 2002 game theoretical update of the 1972 anisogamy model, and use these solutions to examine its robustness to variation in its central assumptions. Combining new results with those from earlier papers, I find that the model is quite robust to variation in its central components. This kind of robustness is crucially important in a model for an early evolutionary transition where we may only have an approximate understanding of constraints that the different parts of the model must obey.https://www.mdpi.com/2073-4409/10/3/573isogamyanisogamysexesfemalemalegamete |
| spellingShingle | Jussi Lehtonen The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness Cells isogamy anisogamy sexes female male gamete |
| title | The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness |
| title_full | The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness |
| title_fullStr | The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness |
| title_full_unstemmed | The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness |
| title_short | The Legacy of Parker, Baker and Smith 1972: Gamete Competition, the Evolution of Anisogamy, and Model Robustness |
| title_sort | legacy of parker baker and smith 1972 gamete competition the evolution of anisogamy and model robustness |
| topic | isogamy anisogamy sexes female male gamete |
| url | https://www.mdpi.com/2073-4409/10/3/573 |
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