Mate sampling influences the intensity of sexual selection and the evolution of costly sexual ornaments

Autor(es)

Muniz, Danilo G. ^{[1, 2]} ; Machado, Glauco ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Ecol, LAGE, Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Biociencias, Dept Ecol, Programa Posgrad Ecol, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Theoretical Biology; v. 447, p. 74-83, JUN 14 2018.
• Citações Web of Science: 3

Resumo

Mate choice includes three steps: (1) a choosing individual encounters potential mates, (2) assesses and processes information about them, and (3) makes a mate decision. During mate searching females can access only a sample of males in the mating pool and need to choose their mates based on limited information. Thus, mate sampling may influence sexual selection promoted by mate choice because it constrains female choice. Using individual-based simulations, we found that both female choosiness and mate sampling influenced the variance in mating success among males and thus the intensity of sexual selection. So that sexual selection is most intense when females are strongly choosy and can sample many males. Moreover, in evolutionary simulations, the rate of evolutionary change and the final size of male ornament increase with increasing mate sampling. However, under stronger natural selection, evolutionary change is slower and leads to smaller ornaments. Empirical data on the potential for sexual selection (I-s) for several animal species show a positive correlation between the intensity of sexual selection and an index of mate sampling based on behavioral and ecological traits. Based on the results of our simulations, we predict that males of highly mobile species with long-range sexual signal transmission, which allow females to assess many males, will show greater variance in mating success and will be more ornamented than their relatives not exhibiting these features. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/13632-5 - Usando análise de redes para explorar os mecanismos subjacentes à escolha de parceiros extra-par por fêmeas
• Beneficiário: Danilo Germano Muniz da Silva
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 12/50229-1 - Macro-ecologia da seleção sexual: influencia do clima sobre caracteres sexualmente selecionados em uma ampla escala geográfica
• Beneficiário: Glauco Machado
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/20468-4 - Libélulas (Odonata) Neotropicais: um modelo de estudo para a macro-ecologia da seleção sexual
• Beneficiário: Eduardo da Silva Alves dos Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado