The eco-evolutionary dynamics of a predator-prey system across an r/K continuum

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorMendes, Pedro B.-
Autor(es): dc.creatorFaria, Lucas D.B.-
Data de aceite: dc.date.accessioned2026-02-09T11:37:47Z-
Data de disponibilização: dc.date.available2026-02-09T11:37:47Z-
Data de envio: dc.date.issued2021-09-20-
Data de envio: dc.date.issued2021-09-20-
Data de envio: dc.date.issued2020-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/48174-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.ecolmodel.2020.109269-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1143887-
Descrição: dc.descriptionThe effects of a single trait on more than one ecological function is called ecological pleiotropy. Traits that exhibit ecological pleiotropy are relevant to eco-evolutionary dynamics because the structure of interaction between the trait and its ecological functions alters how eco-evolutionary feedback loops emerge. Density-dependent selection (DDS) assumes that a single trait affects both density-independent and density-dependent population growth through ecological pleiotropy, and is one of the simplest routes for feedback loops. The r/K theory proposes a mechanism by which DDS occurs, but its predictions were poorly explored in an eco-evolutionary context. Some assumptions of the r/K theory seems to be relevant for the eco-evolution of predator-prey interactions. However, the relationship between these theories were poorly explored. Here, we investigate how does the r/K theory relates to the eco-evolution of predator-prey systems. We seek to answer two questions: (1) What are the system’s parameters that affect the predominance of r- and K-selection? (2) Does system’s qualitative behaviour depends on whether the predominant selection on prey population is an r- or a K-selection? To answer these questions, we built a model of differential equations describing the eco-evolutionary dynamics of a predator-prey system. We assume that prey vulnerability to predation is an adaptive trait that affects preys density-dependent growth rate through ecological pleiotropy. Then, we partitioned the selection gradient in its r- and K-selection components and evaluate how their magnitude relates to systems behaviour. We found that stable predator-prey cycles only occurs when K-selection is predominant. When r-selection is predominant, cycles lead to a runaway dynamics. Furthermore, the way predators parameters affect prey position in the r/K continuum depends on how they affect predation risk. While increasing predation risk increases K-selection, decreasing it increases r-selection. We discuss the relevance of the structure of ecological pleiotropy to our results and the perspectives that unifies the r/K theory and eco-evolutionary dynamics.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceEcological Modelling-
Palavras-chave: dc.subjectPrey adaptation-
Palavras-chave: dc.subjectRapid adaptation-
Palavras-chave: dc.subjectr/K theory-
Palavras-chave: dc.subjectEcological pleiotropy-
Palavras-chave: dc.subjectPopulation biology-
Palavras-chave: dc.subjectPrey vulnerability-
Palavras-chave: dc.subjectPresa - Adaptação-
Palavras-chave: dc.subjectPresa - Dinâmica eco-evolutiva-
Palavras-chave: dc.subjectTeoria da selecção r/K-
Palavras-chave: dc.subjectPleiotropia-
Palavras-chave: dc.subjectPresa - Vulnerabilidade-
Título: dc.titleThe eco-evolutionary dynamics of a predator-prey system across an r/K continuum-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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