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Master's Dissertation
DOI
10.11606/D.100.2014.tde-14102014-111807
Document
Author
Full name
Sergio Candido de Oliveira Junior
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2014
Supervisor
Committee
Rodrigues Neto, Camilo (President)
Ferreira, Fernando Fagundes
Ribeiro, Fabiano Lemes
Title in Portuguese
Modelo baseado em agentes para especiação topopátrica
Keywords in Portuguese
Corredor de fluxo gênico
Distância espacial
Distância genética
Especiação
Genótipos
Isolamento reprodutivo
Mutação
NetLogo
Prole
Abstract in Portuguese
No presente modelo em NetLogo, implementou-se um código onde patches genotipicamente homogêneos, reproduzem-se no mapa composto de 64 x 64 células. Buscam parceiros entre si, seguindo algumas orientações. O par reprodutivo deve estar dentro de uma determinada distância genética (G) e espacial (S). Estes parâmetros definem qual a máxima divergência genotípica permitida para a reprodução (G) e qual a distância espacial máxima entre dois possíveis parceiros reprodutivos (S). Além destes, o sliderM determina a probabilidade de ocorrer mutação nos genótipos resultantes das reproduções e A a amplitude, i.e., a quantidade de mudança sofrida pelo genótipo do agente. A princípio, geneticamente homogêneos, todos os indivíduos podem potencialmente formar pares. Contudo, com ocorrência de trocas genéticas e mutações, na formação da prole, aumenta-se a diversidade genética e há isolamento reprodutivo entre indivíduos. Obteu-se especiação dos agentes, ocorrência de corredor de fluxo gênico e mapa robusto de combinação de parâmetros.
Title in English
Agent-Based modelling for topopatric speciation.
Keywords in English
Genetic distance
Genic flow pathway
Genotypes
Mutation
NetLogo
Offspring
Reproductive isolation
Spatial distance
Speciation
Abstract in English
In the present model in NetLogo, we implemented a code where genotypically homogeneous patches, reproduce in a map consisting of 64 x 64 cells. Seek partners among themselves by following some guidelines. The breeding pair must be within a certain genetic (G) and spatial (S) distance. These parameters define the maximum genotypic divergence which allowed for reproduction (G) and that maximum spatial distance between two potential reproductive partners (S). In addition, the slider M determines the probability of mutation in resulting genotypes and A the amplitude, i.e., the amount of change experienced by the genotype of the agent. Primarily, genetically homogeneous, all individuals can potentially form pairs. However, with the occurrence of genetic changes and mutations in the offspring formation, the genetic diversity increases and there is reproductive isolation between individuals. There were agents speciation, occurrence of genic flow pathway and robust map of matching parameters.
 
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Publishing Date
2015-04-15
 
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