dorsal/arxiv
View SchemaA model of sympatric speciation through assortative mating
| Authors | Franco Bagnoli, Carlo Guardiani |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0402038 |
| URL | https://arxiv.org/abs/q-bio/0402038 |
| DOI | 10.1016/j.physa.2004.08.068 |
| Journal | Physica A 347, 534-574 (2005) |
Abstract
A microscopic model is developed, within the frame of the theory of quantitative traits, to study both numerically and analytically the combined effect of competition and assortativity on the sympatric speciation process, i.e. speciation in the absence of geographical barriers. Two components of fitness are considered: a static one that describes adaptation to environmental factors not related to the population itself, and a dynamic one that accounts for interactions between organisms, e.g. competition. The effects of finiteness of population size on survival of coexisting species are also accounted for. The simulations show that both in the case of flat and ripid static fitness landscapes, competition and assortativity do exert a synergistic effect on speciation. We also show that competition acts as a stabilizing force against extinction due to random sampling in a finite population. Finally, evidence is shown that speciation can be seen as a phase transition.
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"abstract": "A microscopic model is developed, within the frame of the theory of\nquantitative traits, to study both numerically and analytically the combined\neffect of competition and assortativity on the sympatric speciation process,\ni.e. speciation in the absence of geographical barriers. Two components of\nfitness are considered: a static one that describes adaptation to environmental\nfactors not related to the population itself, and a dynamic one that accounts\nfor interactions between organisms, e.g. competition. The effects of finiteness\nof population size on survival of coexisting species are also accounted for.\nThe simulations show that both in the case of flat and ripid static fitness\nlandscapes, competition and assortativity do exert a synergistic effect on\nspeciation. We also show that competition acts as a stabilizing force against\nextinction due to random sampling in a finite population. Finally, evidence is\nshown that speciation can be seen as a phase transition.",
"arxiv_id": "q-bio/0402038",
"authors": [
"Franco Bagnoli",
"Carlo Guardiani"
],
"categories": [
"q-bio.PE"
],
"doi": "10.1016/j.physa.2004.08.068",
"journal_ref": "Physica A 347, 534-574 (2005)",
"title": "A model of sympatric speciation through assortative mating",
"url": "https://arxiv.org/abs/q-bio/0402038"
},
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