Abstract
In order to mathematically model the demographic dynamics of biological populations with sexual reproduction, we consider the more realistic situation where the reproductive process occurs in a non-predictable environment. We also assume that both biological processes, mating and reproduction, are influenced by the number of couples in the population. In this framework, a class of discrete-time two-sex branching models has been introduced in (A class of two-sex branching processes with reproduction phase in a random environment. Stochastics 88:147–161) [10]. In this work, we continue the research about such a class of stochastic models, investigating the time to extinction and some applications.
This work is my modest contribution to this volume edited as a tribute to Pedro Gil. He was an excellent professional and a great person. His wise advices were very useful for me (Manuel Molina).
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- 1.
Given the variables X and Y, we say that X is stochastically smaller than Y if, for each real number t, \(P(X\le t)\ge P(Y\le t)\).
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Acknowledgements
This research has been supported by the Gobierno de Extremadura, Grant GR15105, the Ministerio de Economía y Competitividad of Spain, Grant MTM2015-70522-P, and the FEDER.
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Molina, M., Mota, M., Ramos, A. (2018). Mathematical Modeling in Biological Populations with Reproduction in a Non-predictable Environment. In: Gil, E., Gil, E., Gil, J., Gil, M. (eds) The Mathematics of the Uncertain. Studies in Systems, Decision and Control, vol 142. Springer, Cham. https://doi.org/10.1007/978-3-319-73848-2_30
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DOI: https://doi.org/10.1007/978-3-319-73848-2_30
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