Population Consequences of Parent-Offspring Competition: An Individual-Based Model

Janusz Uchmański

doi:10.21697/seb.5811

Published: 2024-03-29

Vol. 22 No. 2 (2024)

Population Consequences of Parent-Offspring Competition: An Individual-Based Model

Janusz Uchmański

Studia Ecologiae et Bioethicae

Section: Articles

https://doi.org/10.21697/seb.5811

Abstract

The article compares different versions of individual-based models of single population dynamics with overlapping generations with results of the model of population with non-overlapping generations. In all models, various versions of global competition for common resources and their unequal partitioning between competing individuals are analysed, i.e., when juveniles and adult individuals compete for the same resources, when juveniles and adult individuals use different resources, and a case called mother’s care. The article analyses the relationship between individual variability and population persistence measured by the time of population extinction. Persistence of a population is increased by all forms of competition between individuals not weakened by any environmental factors (e.g. diversification of resources of competing individuals) or factors arising from evolutionary history of the species (e.g. mother’s care) and related in an appropriate way to the mechanism shaping individual variability in the population. Any form of weakening competition leading to decreasing individual variability will adversely affect the persistence of the population. However, differences between versions of the model are not very big.

Keywords:

individual-based model, non-overlapping generations, overlapping generations, individual variability, persistence, extinction time, population extinction time

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Uchmański, J. (2024). Population Consequences of Parent-Offspring Competition: An Individual-Based Model. Studia Ecologiae Et Bioethicae, 22(2), 85–100. https://doi.org/10.21697/seb.5811

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References

Cooper, William S. 1984. “Expected time to extinction and the concept of fundamental fitness.” Journal of Theoretical Biology 107(4): 603-629. DOI: https://doi.org/10.1016/S0022-5193(84)80135-6
Google Scholar

Coulson, Team, H. Charles J. Godfrey. 2007. “Single-species dynamics.” In Theoretical ecology. Principles and applications, edited by Robert May, and Angela R. McLean, 17-34. Oxford: Oxford University Press. DOI: https://doi.org/10.1093/oso/9780199209989.003.0006
Google Scholar

Ebenma, Bo, and Lennart Persson (eds). 1988. Size-Structured Populations: Ecology and Evolution. Heidelberg: Springer-Verlag Berlin. DOI: https://doi.org/10.1007/978-3-642-74001-5
Google Scholar

Grimm, Volker, and Janusz Uchmański. 2002. “Individual variability and population regulation: a model of significance of within-generation density dependence.” Oecologia 131: 196-202. DOI: https://doi.org/10.1007/s00442-002-0875-y
Google Scholar

Ivlev, Viktor S. 1961. Experimental ecology of the feeding of fishes. New Haven: Yale University Press.
Google Scholar

Logofet, Dmitriy O. and Nina G. Ulanova. 2017. Матричные модели в популяционной биологии (matrichnyye modeli v populyatsionnoy biologii) [Matrix models in population biology]. Moscow: MAKS Press.
Google Scholar

Łomnicki, Adam. 1988. Population Ecology of Individuals. Princeton: Princeton University Press.
Google Scholar

Majkowski, Jacek, and Janusz Uchmański. 1980. “Theoretical foundations of individual growth equations.” Polish Ecological Studies 6(1): 7-31.
Google Scholar

Stearns, Stephen C., and Rolf F. Hoekstra. 2005. Evolution. An introduction. Oxford: Oxford University Press.
Google Scholar

Uchmański, Janusz, and Jurij Dgebuadze. 1990. “Factors affecting skewness of weight distributions in even-aged populations: a numerical model.” Polish Ecological Studies 16: 297-311.
Google Scholar

Uchmański, Janusz. 1985. “Differentiation and frequency distributions of body weights in plants and animals.” Philosophical Transactions of Royal Society of London Ser B 310: 1-75. DOI: https://doi.org/10.1098/rstb.1985.0099
Google Scholar

Uchmański, Janusz. 1987. “Resource partitioning among unequal competitors.” Ekologia Polska 35(1): 71-87.
Google Scholar

Uchmański, Janusz. 2000. “Individual variability and population regulation: an individual-based model.” Oikos 90(3): 539-548. DOI: https://doi.org/10.1034/j.1600-0706.2000.900312.x
Google Scholar