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Does natural selection align with sexual selection to promote reproductive isola...

Does natural selection align with sexual selection to promote reproductive isolation in different environments? An experimental approach Understanding the drivers of reproductive isolation between populations lies at the core of evolutionary biology and is central to understanding how speciation occurs. Natural selection has been traditionally considered a major fo... ver más

31/08/2022

204K€

Presupuesto del proyecto: 204K€

Líder del proyecto

UPPSALA UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2022-08-31

MSCA-IF-2018: Individual Fellowships

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Cerrada hace 6 años

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1 Participantes

203.85K€ | Lider

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Duración del proyecto: 40 meses Fecha Inicio: 2019-04-10
Fecha Fin: 2022-08-31

Líder del proyecto

UPPSALA UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 204K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Understanding the drivers of reproductive isolation between populations lies at the core of evolutionary biology and is central to understanding how speciation occurs. Natural selection has been traditionally considered a major force driving speciation, but other forces can hamper or reinforce the impact of natural selection on adaptation, including sexual selection. So far, theoretical and empirical studies have produced mixed findings about the extent to which natural and sexual selection act jointly or in opposition to drive reproductive isolation, and hence speciation. Experimental evolution is a powerful tool to test the combined effect of natural and sexual selection to drive population divergence. In this action, I will use seed beetle Acanthoscelides obtectus from long-term experimental evolution lines, which have differed in environmental condition and selective pressures, to explore reproductive isolation as driven by the interaction between local adaptation to a novel environment and sexual selection/conflict. In a novel framework combining phenotypic-level measurements with genomic tools, I will quantify (a) the extent of pre-zygotic reproductive isolation between populations under different environmental regimes; (b) the extent of post-zygotic reproductive isolation, by determining the extent to which hybrid eggs and offspring are of lower fitness than non-hybrids; and (c) gene expression and selection pressures associated with the novel environment at loci associated with natural and sexual selection, which are putative sources of reproductive isolation. This project represents a major advance in our understanding of the role of multiple selective forces in driving species diversity.

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