Emergence and loss of assortative mating in sympatric speciation

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorRibeiro, Fabiano-
Autor(es): dc.creatorCaticha, Nestor-
Data de aceite: dc.date.accessioned2026-02-09T12:32:35Z-
Data de disponibilização: dc.date.available2026-02-09T12:32:35Z-
Data de envio: dc.date.issued2018-03-05-
Data de envio: dc.date.issued2018-03-05-
Data de envio: dc.date.issued2009-06-07-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/28802-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0022519308006292?via%3Dihub#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1163401-
Descrição: dc.descriptionWe have studied an agent model which presents the emergence of sexual barriers through the onset of assortative mating, a condition that might lead to sympatric speciation. In the model, individuals are characterized by two traits, each determined by a single locus or . Heterozygotes on are penalized by introducing an adaptive difference from homozygotes. Two niches are available. Each homozygote is adapted to one of the niches. The second trait, called the marker trait has no bearing on the fitness. The model includes mating preferences, which are inherited from the mother and subject to random variations. A parameter controlling recombination probabilities of the two loci is also introduced. We study the phase diagram by means of simulations, in the space of parameters (adaptive difference, carrying capacity, recombination probability). Three phases are found, characterized by (i) assortative mating, (ii) extinction of one of the alleles and (iii) Hardy–Weinberg like equilibrium. We also make perturbations of these phases to see how robust they are. Assortative mating can be gained or lost with changes that present hysteresis loops, showing the resulting equilibrium to have partial memory of the initial state and that the process of going from a polymorphic panmictic phase to a phase where assortative mating acts as sexual barrier can be described as a first-order transition.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Theoretical Biology-
Palavras-chave: dc.subjectAssortative mating - Evolution-
Palavras-chave: dc.subjectReproductive isolation-
Palavras-chave: dc.subjectSympatric speciation-
Palavras-chave: dc.subjectAcasalamento assortivo - Evolução-
Palavras-chave: dc.subjectIsolamento reprodutivo-
Título: dc.titleEmergence and loss of assortative mating in sympatric speciation-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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