Influence of individuals natural selection by fertility on scenarios of populations with simple age structure development

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Abstract

The paper studies the model of evolution for a two-stage population with birth rate limitation, under the influence of natural selection regulating individual fertility. The model analytical and numerical research has been carried out. With a reduced reproductive potential of heterozygotes, the model is shown to reveal multistability when, depending on the initial values of allele frequencies, stable polymorphism can be realized along with the «bistability trap».

About the authors

G. P. Neverova

Институт автоматики и процессов управления ДВО РАН

Author for correspondence.
Email: galina.nev@gmail.com
ORCID iD: 0000-0001-7567-7188
Russian Federation, ул. Радио 5, г. Владивосток, 690041

E. Ya. Frisman

Институт комплексного анализа региональных проблем ДВО РАН

Email: frisman@mail.ru
ORCID iD: 0000-0003-1629-2610
Russian Federation, ул. Шолом-Алейхема 4, г. Биробиджан, 679016

References

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  2. Neverova G.P., Frisman E.Ya. The emergence of complex population dynamics in age-structured populations under natural selection for fertility. Genetika, 2025. (In Russ.).
  3. Itô Y., Iwasa Y. Evolution of litter size: I. Conceptual reexamination. Researches on Population Ecology, 1981, vol. 23, no. 2. pp. 344–359. doi: 10.1007/BF02515636.
  4. Rauw W. M., Luiting P., Beilharz R.G. et al. Selection for litter size and its consequences for the allocation of feed resources: a concept and its implications illustrated by mice selection experiments. Livestock Production Science, 1999, vol. 60, no. 2–3, pp. 329–342. doi: 10.1016/S0301-6226(99)00104-9.
  5. Wilsterman K., Bautista A.I., Butler C.E. et al. Evolution of litter size: proximate and ultimate mechanisms. Integrative and Comparative Biology, 2024, vol. 64, no. 6, pp. 1643–1660. doi: 10.1093/icb/icae052.

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