Revisiting the “fallacy of averages” in ecology: Expected gain per unit time equals expected gain divided by expected time.

0508821 - BC 2020 RIV GB eng J - Článek v odborném periodiku
Broom, M. - Cressman, R. - Křivan, Vlastimil
Revisiting the “fallacy of averages” in ecology: Expected gain per unit time equals expected gain divided by expected time.
Journal of Theoretical Biology. Roč. 483, DEC 21 (2019), č. článku UNSP 109993. ISSN 0022-5193. E-ISSN 1095-8541
GRANT EU: European Commission(XE) 690817 - FourCmodelling
Institucionální podpora: RVO:60077344
Klíčová slova: diet choice model * fallacy of averages * functional response
Obor OECD: Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology
Impakt faktor: 2.327, rok: 2019
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0022519319303418?via%3Dihub

Fitness is often defined as the average payoff an animal obtains when it is engaged in several activities, each taking some time. We point out that the average can be calculated with respect to either the time distribution, or to the event distribution of these activities. We show that these two averages lead to the same fitness function. We illustrate this result through two examples from foraging theory, Holling II functional response and the diet choice model, and one game-theoretic example of Hamilton’s rule applied to the time-constrained Prisoner’s dilemma (PD). In particular, we show that in these models, fitness defined as expected gain per unit time equals fitness defined as expected gain divided by expected time. We also show how these fitnesses predict the optimal outcome for diet choice and the prevalence of cooperation in the repeated PD game.
Trvalý link: http://hdl.handle.net/11104/0300834