0000000000186644

AUTHOR

Hannah E. A. Macgregor

showing 3 related works from this author

Sexual selection drives asymmetric introgression in wall lizards.

2015

Hybridisation is increasingly recognised as an important cause of diversification and adaptation. Here, we show how divergence in male secondary sexual characters between two lineages of the common wall lizard (Podarcis muralis) gives rise to strong asymmetries in male competitive ability and mating success, resulting in asymmetric hybridisation upon secondary contact. Combined with no negative effects of hybridisation on survival or reproductive characters in F1-hybrids, these results suggest that introgression should be asymmetric, resulting in the displacement of sexual characters of the sub-dominant lineage. This prediction was confirmed in two types of secondary contact, across a natur…

MaleCompetitive BehaviorLineage (evolution)introgressionIntrogressionBiologymale-male competitionbiology.animalGermanyhybridisationAnimalsFemale choicefemale choiceMatingSelection GeneticEcology Evolution Behavior and SystematicsEcologyLizardmale–male competitionLizardsMating Preference Animalbiology.organism_classificationlizardsPodarcis muralisFemale choice hybridisation introgression lizards male–male competitionMate choiceItalySexual selectionHybridization GeneticFemaleFranceAdaptationEcology letters
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Experimental contact zones reveal causes and targets of sexual selection in hybridizing lizards

2016

Divergence in sexually selected traits in allopatry should affect the degree and direction of hybridization. However, few studies have established the causes and targets of sexual selection during secondary contact. Common wall lizards (Podarcis muralis) from north-central Italy have highly exaggerated male sexual traits compared to populations in Western Europe. Using experimental populations, we show that this creates asymmetries in male dominance, spatial habitat use and reproductive success upon secondary contact. Hybridization occurred almost exclusively between males of the Italian lineage and females of the Western European lineage. We provide evidence to suggest stronger ongoing sel…

0106 biological sciences0301 basic medicineGeneticsReproductive successOffspringPodarcisAllopatric speciationIntrogressionBiologybiology.organism_classification010603 evolutionary biology01 natural sciencesPodarcis muralis03 medical and health sciences030104 developmental biologyEvolutionary biologyWestern europeSexual selectionEcology Evolution Behavior and SystematicsFunctional Ecology
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Data from: Experimental contact zones reveal causes and targets of sexual selection in hybridizing lizards

2017

Divergence in sexually selected traits in allopatry should affect the degree and direction of hybridization. However, few studies have established the causes and targets of sexual selection during secondary contact. Common wall lizards (Podarcis muralis) from north-central Italy have highly exaggerated male sexual traits compared to populations in Western Europe. Using experimental populations, we show that this creates asymmetries in male dominance, spatial habitat use and reproductive success upon secondary contact. Hybridization occurred almost exclusively between males of the Italian lineage and females of the Western European lineage. We provide evidence to suggest stronger ongoing sel…

medicine and health carePodarcisMedicinemale-male competitionLife sciences
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