Which cues are sexy? The evolution of mate preference in sympatric species reveals the contrasted effect of adaptation and reproductive interference - Archive ouverte HAL
Article Dans Une Revue Evolution Letters Année : 2024

Which cues are sexy? The evolution of mate preference in sympatric species reveals the contrasted effect of adaptation and reproductive interference

Résumé

Mate preferences may target traits (1) enhancing offspring adaptation and (2) reducing heterospe-2cific matings. Because similar selective pressures are acting on traits shared by different sympatricspecies, preference enhancing offspring adaptation may increase heterospecific mating, in sharp4contrast with the classical case of so-called ’magic traits’. Using a mathematical model, we studywhich and how many traits will be used during mate choice, when preferences for locally adapted6traits increase heterospecific mating. In particular, we study the evolution of preference towardsan adaptive vs. a neutral trait in sympatric species. We take into account sensory trade-offs which8may limit the emergence of preference for several traits. Our model highlights that the evolutionof preference towards adaptive vs. neutral traits depends on the selective regimes acting on traits10but also on heterospecific interactions. When the costs of heterospecific interactions are high, matepreference is likely to target neutral traits that become a reliable cue limiting heterospecific matings.12We show that the evolution of preference towards a neutral trait benefits from a positive feedbackloop: the more preference targets the neutral trait, the more it becomes a reliable cue for species14recognition. We then reveal the key role of sensory trade-offs and the cost of choosiness favouringthe evolution of preferences targeting adaptive traits, rather than traits reducing heterospecific16mating. When sensory trade-offs and the cost of choosiness are low, we also show that preferencestargeting multiple traits evolve, improving offspring fitness by both transmitting adapted alleles18and reducing heterospecific mating. Altogether, our model aims at reconciling ‘good gene’ andreinforcement models to provide general predictions on the evolution of mate preferences within20natural communities.
Fichier principal
Vignette du fichier
Manuscript Biorxiv.pdf (5.18 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04289183 , version 1 (22-11-2023)

Identifiants

Citer

Ludovic Maisonneuve, Charline Smadi, Violaine Llaurens. Which cues are sexy? The evolution of mate preference in sympatric species reveals the contrasted effect of adaptation and reproductive interference. Evolution Letters, 2024, pp.1-37. ⟨10.1093/evlett/qrad058⟩. ⟨hal-04289183⟩
34 Consultations
61 Téléchargements

Altmetric

Partager

More