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Tytuł pozycji:

Fluctuating Dynamics of Mate Availability Promote the Evolution of Flexible Choosiness in Both Sexes.

Tytuł :
Fluctuating Dynamics of Mate Availability Promote the Evolution of Flexible Choosiness in Both Sexes.
Autorzy :
Chevalier L
Labonne J
Galipaud M
Dechaume-Moncharmont FX
Pokaż więcej
Źródło :
The American naturalist [Am Nat] 2020 Dec; Vol. 196 (6), pp. 730-742. Date of Electronic Publication: 2020 Oct 23.
Typ publikacji :
Journal Article
Język :
Imprint Name(s) :
Publication: Chicago, IL : University of Chicago Press
Original Publication: Salem, Mass. : Essex Institute
MeSH Terms :
Choice Behavior*
Mating Preference, Animal*
Animals ; Biological Evolution ; Courtship ; Female ; Male ; Models, Theoretical ; Sex Ratio
Contributed Indexing :
Keywords: choosiness*; context dependency*; flexibility*; game theory*; mutual mate choice*; scramble competition*
Entry Date(s) :
Date Created: 20201119 Date Completed: 20210111 Latest Revision: 20210111
Update Code :
Czasopismo naukowe
AbstractThe evolution of choosiness has a strong effect on sexual selection, as it promotes variance in mating success among individuals. The context in which choosiness is expressed, and therefore the associated gain and cost, is highly variable. An overlooked mechanism by current models is the rapid fluctuations in the availability and quality of partners, which generates a dynamic mating market to which each individual must optimally respond. We argue that the rapid fluctuations of the mating market are central to the evolution of optimal choosiness. Using a dynamic game approach, we investigate this hypothesis for various mating systems (characterized by different adult sex ratio and latency period combinations), allowing feedback between the choosiness and partner availability throughout a breeding season while taking into account the fine variation in individual quality. Our results indicate that quality-dependent and flexible choosiness usually evolve in both sexes for various mating systems and that a significant amount of variance in choosiness is observed, especially in males, even when courtship is costly. Accounting for the fluctuating dynamics of the mating market therefore allows envisioning a much wider range of choosiness variation in natural populations and may explain a number of recent empirical results regarding choosiness in the less common sex or its variance within sexes.

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