Gametic selection favours polyandry and selfing.
Competition among pollen or sperm (gametic selection) can cause evolution. Mating systems shape the intensity of gametic selection by determining the competitors involved, which can in turn cause the mating system itself to evolve. We model the bidirectional relationship between gametic selection an...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2024-02-01
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| Series: | PLoS Genetics |
| Online Access: | https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1010660&type=printable |
| _version_ | 1827321119223316480 |
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| author | Michael Francis Scott Carl Mackintosh Simone Immler |
| author_facet | Michael Francis Scott Carl Mackintosh Simone Immler |
| author_sort | Michael Francis Scott |
| collection | DOAJ |
| description | Competition among pollen or sperm (gametic selection) can cause evolution. Mating systems shape the intensity of gametic selection by determining the competitors involved, which can in turn cause the mating system itself to evolve. We model the bidirectional relationship between gametic selection and mating systems, focusing on variation in female mating frequency (monandry-polyandry) and self-fertilisation (selfing-outcrossing). First, we find that monandry and selfing both reduce the efficiency of gametic selection in removing deleterious alleles. This means that selfing can increase mutation load, in contrast to cases without gametic selection where selfing purges deleterious mutations and decreases mutation load. Second, we explore how mating systems evolve via their effect on gametic selection. By manipulating gametic selection, polyandry can evolve to increase the fitness of the offspring produced. However, this indirect advantage of post-copulatory sexual selection is weak and is likely to be overwhelmed by any direct fitness effects of mating systems. Nevertheless, gametic selection can be potentially decisive for selfing evolution because it significantly reduces inbreeding depression, which favours selfing. Thus, the presence of gametic selection could be a key factor driving selfing evolution. |
| first_indexed | 2024-03-07T16:28:50Z |
| format | Article |
| id | doaj.art-b351fdd4e9ab4b6a912025ea42a68392 |
| institution | Directory Open Access Journal |
| issn | 1553-7390 1553-7404 |
| language | English |
| last_indexed | 2024-04-25T00:59:38Z |
| publishDate | 2024-02-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Genetics |
| spelling | doaj.art-b351fdd4e9ab4b6a912025ea42a683922024-03-11T05:31:54ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042024-02-01202e101066010.1371/journal.pgen.1010660Gametic selection favours polyandry and selfing.Michael Francis ScottCarl MackintoshSimone ImmlerCompetition among pollen or sperm (gametic selection) can cause evolution. Mating systems shape the intensity of gametic selection by determining the competitors involved, which can in turn cause the mating system itself to evolve. We model the bidirectional relationship between gametic selection and mating systems, focusing on variation in female mating frequency (monandry-polyandry) and self-fertilisation (selfing-outcrossing). First, we find that monandry and selfing both reduce the efficiency of gametic selection in removing deleterious alleles. This means that selfing can increase mutation load, in contrast to cases without gametic selection where selfing purges deleterious mutations and decreases mutation load. Second, we explore how mating systems evolve via their effect on gametic selection. By manipulating gametic selection, polyandry can evolve to increase the fitness of the offspring produced. However, this indirect advantage of post-copulatory sexual selection is weak and is likely to be overwhelmed by any direct fitness effects of mating systems. Nevertheless, gametic selection can be potentially decisive for selfing evolution because it significantly reduces inbreeding depression, which favours selfing. Thus, the presence of gametic selection could be a key factor driving selfing evolution.https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1010660&type=printable |
| spellingShingle | Michael Francis Scott Carl Mackintosh Simone Immler Gametic selection favours polyandry and selfing. PLoS Genetics |
| title | Gametic selection favours polyandry and selfing. |
| title_full | Gametic selection favours polyandry and selfing. |
| title_fullStr | Gametic selection favours polyandry and selfing. |
| title_full_unstemmed | Gametic selection favours polyandry and selfing. |
| title_short | Gametic selection favours polyandry and selfing. |
| title_sort | gametic selection favours polyandry and selfing |
| url | https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1010660&type=printable |
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