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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Van Kleunen, Mark Dorken, Marcel E. Van Drunen, Wendy E. |
| Description | Author Affiliation: Van Drunen WE ( Department of Integrative Biology, University of Guelph, Guelph, ON, Canada, N1G 2W1); van Kleunen M ( Ecology, Department of Biology, University of Konstanz, 78457 Konstanz, Germany); Dorken ME ( Department of Biology, Trent University, Peterborough, ON, Canada, K9J 7B8 marceldorken@trentu.ca.); |
| Abstract | Clonality is a pervasive feature of sessile organisms, but this form of asexual reproduction is thought to interfere with sexual fitness via the movement of gametes among the modules that comprise the clone. This within-clone movement of gametes is expected to reduce sexual fitness via mate limitation of male reproductive success and, in some cases, via the production of highly inbred (i.e., self-fertilized) offspring. However, clonality also results in the spatial expansion of the genetic individual (i.e., genet), and this should decrease distances gametes and sexually produced offspring must travel to avoid competing with other gametes and offspring from the same clone. The extent to which any negative effects of clonality on mating success might be offset by the positive effects of spatial expansion is poorly understood. Here, we develop spatially explicit models in which fitness was determined by the success of genets through their male and female sex functions. Our results indicate that clonality serves to increase sexual fitness when it is associated with the outward expansion of the genet. Our models further reveal that the main fitness benefit of clonal expansion might occur through the dispersal of offspring over a wider area compared with nonclonal phenotypes. We conclude that, instead of interfering with sexual reproduction, clonal expansion should often serve to enhance sexual fitness. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 29 |
| Volume Number | 112 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2015-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Genetic Fitness Seed Dispersal Physiology Animals Clone Cells Computer Simulation Mutation Phenotype Reproduction Self-Fertilization Stochastic Processes Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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