RT Journal Article
SR Electronic
T1 The evolution of mutual mate choice under direct benefits
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 046714
DO 10.1101/046714
A1 Alexandre Courtiol
A1 Loïc Etienne
A1 Romain Feron
A1 Bernard Godelle
A1 François Rousset
YR 2016
UL http://biorxiv.org/content/early/2016/04/02/046714.abstract
AB In nature, the intensity of mate choice (i.e., choosiness) is highly variable within and between sexes. Despite growing empirical evidence showing male and/or mutual mate choice, theoretical investigations of the joint evolution of female and male choosiness are few. In addition, previous approaches have often assumed an absence of trade-off between the direct benefits per mating and the lower mating rate that results from being choosy. Here, we model the joint evolution of female and male choosiness when it is solely ruled by this fundamental trade-off. We show that this trade-off can generate a diversity of stable combinations of choosiness. Mutual mate choice can only evolve if both females and males exhibit long latency after mating. Further, we show that an increase in choosiness in one sex does not necessarily prevent the evolution of mutual mate choice: the outcome depends on details of the life history, the decision rule for mate choice, and how the fecundity of a pair is shaped by the quality of both individuals. Lastly, we discuss the power of the sensitivity of the relative searching time (i.e., of the proportion of lifetime spent searching for mates) as a predictor of the joint evolution of choosiness.