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| Author(s): |
Joao Ulises Fabián Lizárraga
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin |
| Defense date: | 2024-07-29 |
| Examining board members: |
Marcus Aloizio Martinez de Aguiar;
Thomas Kauê Dal'Maso Peron;
Alberto Vazquez Saa
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| Advisor: | Marcus Aloizio Martinez de Aguiar |
| Abstract | |
Populations can show emergent behaviors under specific conditions. From short to long scales, in space or time, patterns emerge as individuals’ states evolve following simple rules. In this work, we explore two of these behaviors: speciation and self-organization. For the former, we consider the evolution of neutral populations in sympatric scenarios under a mating condition imposed by assortativity. In our model, individuals are represented by three chromosomes: one responsible for reproductive compatibility, one for coding the trait on which assortativity will operate, and a neutral chromosome. Reproduction is possible if individuals are genetically similar concerning the first chromosome, but among these compatible mating partners, the one with the most similar trait coded by the second chromosome is selected. We show that speciation with small genome sizes can occur if assortative mating is introduced. Moreover, this type of assortativity facilitates speciation, which can happen with a small number of genes in the first chromosome. For the latter, we study populations of hypothetical individuals where swarming and synchronization can arise and where these phenomena can also interplay. We present two analytically tractable models and explore the static and active states that emerge from these. All the regions where these states emerge are uncovered and classified. Additionally, uncommon features such as multistability and chaos, found in these models, are also studied (AU) | |
| FAPESP's process: | 21/04251-4 - Sympatric speciation through assortativity: the role of neutral and mating trairs |
| Grantee: | Joao Ulises Fabián Lizárraga |
| Support Opportunities: | Scholarships in Brazil - Master |