scholarly journals State‐dependent environmental sensitivity of reproductive success and survival in a shorebird

Ibis ◽  
2021 ◽  
Author(s):  
Jurrian Van Irsel ◽  
Magali Frauendorf ◽  
Bruno J. Ens ◽  
Martijn Van De Pol ◽  
Karin Troost ◽  
...  
2020 ◽  
pp. 203-230
Author(s):  
John M. McNamara ◽  
Olof Leimar

Many games focus on a part of the life of an organism. The payoff structure of the game then represents how the game affects fitness proxies such as mean lifetime reproductive success, which are concerned with the whole of the life of the organism. However, the traditional approach of specifying payoffs in advance of the analysis of the game can lead to inconsistencies because the rest of the life of an individual is not fixed but depends on what happens in the game. This chapter concerns this issue, identifying situations in which a more holistic approach is needed. A series of models illustrates links between the current situation and a lifetime perspective. When each of two parents must decide whether to care for their common young or desert, the payoff for desertion depends on the solution of the game and cannot be specified in advance. A game in which two males contest for a female illustrates the approach that must be taken if this game can be repeated at a later time. A game in which individuals must possess territories in order to breed is developed that highlights various interdependencies and, by incorporating learning, advances the understanding of owner–intruder interactions. The interdependencies in state-dependent dynamic games are also illustrated with a model in which individuals must trade off the risks of starvation and predation in a situation in which the choice of the best foraging habitat depends on the number of other animals that use that habitat.


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