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Multi-generation genetic contributions of immigrants reveal cryptic elevated and sex-biased effective gene flow within a natural meta-population.
Reid, Jane M; Dickel, Lisa; Keller, Lukas F; Nietlisbach, Pirmin; Arcese, Peter.
Afiliação
  • Reid JM; Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
  • Dickel L; School of Biological Sciences, University of Aberdeen, Aberdeen, UK.
  • Keller LF; Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
  • Nietlisbach P; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland.
  • Arcese P; Natural History Museum, University of Zurich, Zurich, Switzerland.
Ecol Lett ; 27(2): e14377, 2024 Feb.
Article em En | MEDLINE | ID: mdl-38361472
ABSTRACT
Impacts of immigration on micro-evolution and population dynamics fundamentally depend on net rates and forms of resulting gene flow into recipient populations. Yet, the degrees to which observed rates and sex ratios of physical immigration translate into multi-generational genetic legacies have not been explicitly quantified in natural meta-populations, precluding inference on how movements translate into effective gene flow and eco-evolutionary outcomes. Our analyses of three decades of complete song sparrow (Melospiza melodia) pedigree data show that multi-generational genetic contributions from regular natural immigrants substantially exceeded those from contemporary natives, consistent with heterosis-enhanced introgression. However, while contributions from female immigrants exceeded those from female natives by up to three-fold, male immigrants' lineages typically went locally extinct soon after arriving. Both the overall magnitude, and the degree of female bias, of effective gene flow therefore greatly exceeded those which would be inferred from observed physical arrivals, altering multiple eco-evolutionary implications of immigration.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Passeriformes / Emigrantes e Imigrantes Limite: Animals / Female / Humans / Male Idioma: En Revista: Ecol Lett Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Noruega

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Passeriformes / Emigrantes e Imigrantes Limite: Animals / Female / Humans / Male Idioma: En Revista: Ecol Lett Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Noruega