| Full text | |
| Author(s): |
Caetano, R. A.
[1]
;
Sanchez, Sergio
[1]
;
Costa, Carolina L. N.
[2]
;
de Aguiar, Marcus Aloizio Martinez
[3]
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Parana, Dept Fis, Caixa Postal 19044, BR-81531990 Curitiba, Parana - Brazil
[2] Univ Estadual Campinas, Inst Biol, BR-13083859 Campinas, SP - Brazil
[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Journal of Physics A-Mathematical and Theoretical; v. 53, n. 15 APR 17 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Although geographic isolation has been shown to play a key role in promoting reproductive isolation, it is now believed that speciation can also happen in sympatry and with considerable gene flow. Here we present a model of sympatric speciation based on assortative mating that does not require a genetic threshold for reproduction, i.e., that does not directly associate genetic differences between individuals with reproductive incompatibilities. In the model individuals mate with the most similar partner in their pool of potential mates, irrespective of how dissimilar it might be. We show that assortativity alone can lead to the formation of clusters of genetically similar individuals. The absence of a minimal genetic similarity for mating implies the constant generation of hybrids and brings up the old problem of species definition. Here, we define species based on clustering of genetically similar individuals but allowing genetic flow among different species. We show that the results obtained with the present model are in good agreement with empirical data, in which different species can still reproduce and generate hybrids. (AU) | |
| FAPESP's process: | 16/06054-3 - Spatially distributed population dynamics: speciation and coevolution |
| Grantee: | Marcus Aloizio Martinez de Aguiar |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 15/11985-3 - Evolution of cooperation among different species |
| Grantee: | Flávia Maria Darcie Marquitti |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |