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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A multinomial network method for the analysis of mate choice and assortative mating in spatially structured populations

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Autor(es):
Muniz, Danilo G. [1, 2] ; Santos, Eduardo S. A. [1, 3] ; Guimaraes, Jr., Paulo R. [1] ; Nakagawa, Shinichi [4, 5] ; Machado, Glauco [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Biosci, Dept Ecol, LAGE Lab, Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Biosci, Dept Ecol, Postgrad Programme Ecol, Sao Paulo - Brazil
[3] Univ Sao Paulo, Inst Biosci, Dept Zool, BECO Lab, Sao Paulo - Brazil
[4] Univ New South Wales, Evolut & Ecol Res Ctr, Sydney, NSW - Australia
[5] Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW - Australia
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: METHODS IN ECOLOGY AND EVOLUTION; v. 8, n. 10, p. 1321-1331, OCT 2017.
Citações Web of Science: 3
Resumo

Mate sampling, whereby individuals cannot access all potential mating partners in a population, is a ubiquitous yet poorly explored process. Ignoring mate sampling may underestimate female choice because the smaller the sample taken by individuals of the choosing sex, the weaker the correlation between sexually selected traits and the mating success among individuals of the chosen sex. A main factor promoting mate sampling is the spatial distribution of individuals. Thus, including distances in models of mate choice should improve estimates of mate choosiness. However, spatial distances between individuals are pairwise variables and cannot be readily included in the models commonly used to investigate mate choice. We address this limitation by proposing a multinomial network (MN) model of mate choice, and comparing its performance with a previously published binomial generalized linear mixed model. Both models allow the inclusion of pairwise predictors, accommodating spatial distances between individuals in analyses of mate choice. We evaluated the performance of these models in detecting directional and assortative mate choice using different simulated datasets: with and without spatial information, and with and without spatial autocorrelation of male and female traits. We also took samples of different sizes from the simulated datasets to evaluate the models' performance when data are incomplete. Using both models, the exclusion of spatial information underestimated mate choice. Small sample sizes from the simulated populations led to underestimated directional mate choice, whereas assortative choice estimates were unbiased. Taking larger samples increased statistical power, and confidence interval coverage of both models. Spatial autocorrelation decreased the power of both models, but the MN model was less affected by it. We conclude that including space in analyses of mate choice increases our ability to detect and accurately estimate mate choice using observational data. The MN model is a powerful and flexible tool that should be used in studies of mate choice in spatially structured populations. Moreover, the model can be used to investigate choice in other contexts, such as floral constancy by pollinators and host plant selection by phytophagous insects. (AU)

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
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
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
Linha de fomento: 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
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/10448-4 - Inter-relações entre cuidado paternal e seleção sexual em opiliões
Beneficiário:Glauco Machado
Linha de fomento: Auxílio à Pesquisa - Regular