4 Works

Data from: Rapid morphological changes, admixture and invasive success in populations of Ring-necked parakeets (Psittacula krameri) established in Europe

Ariane Le Gros, Sarah Samadi, Dario Zuccon, Raphaël Cornette, Michael P. Braun, Juan Carlos Senar & Philippe Clergeau
The Ring-necked parakeet (Psittacula krameri), native of Asia and Africa, is a very successful invasive species in Europe: it has been present there for over 50 years. A recent study showed that European invasive populations occupy a colder climatic niche than in their native range but the establishment of this tropical species in temperate regions remains unexplained. Two main hypotheses may explain the success of Ring-necked parakeet in Europe: admixture between individuals from different origins...

Data from: Invasion history and demographic processes associated with rapid morphological changes in the Red-whiskered bulbul established on tropical islands

Ariane Le Gros, Philippe Clergeau, Dario Zuccon, Raphaël Cornette, Blake Mathys & Sarah Samadi
The Red-whiskered bulbul is a very successful invasive bird species. Morphological differences have been reported among individuals inhabiting the humid and dry coasts of Reunion Island, in a 30-year-old population. This suggests a capacity for rapid local adaptation which could explain the general invasive success of this species. However, the origin and invasion history of this population is unknown. It is therefore not possible to establish with certainty the cause of these morphological differences. Here,...

Data from: Reduced mate availability leads to evolution of self-fertilization and purging of inbreeding depression in a hermaphrodite

Elsa Noël, Yohann Chemtob, Tim Jänicke, Violette Sarda, Benjamin Pélissié, Philippe Jarne & Patrice David
Basic models of mating-system evolution predict that hermaphroditic organisms should mostly either cross-fertilize, or self-fertilize, due to self-reinforcing coevolution of inbreeding depression and outcrossing rates. However transitions between mating systems occur. A plausible scenario for such transitions assumes that a decrease in pollinator or mate availability temporarily constrains outcrossing populations to self-fertilize as a reproductive assurance strategy. This should trigger a purge of inbreeding depression which in turn encourages individuals to self-fertilize more often and...

Data from: Using long-term experimental evolution to uncover the patterns and determinants of molecular evolution of an Escherichia coli natural isolate in the streptomycin treated mouse gut

Mathilde Lescat, Launay Adrien, Mohamed Ghalayini, Mélanie Magnan, Jérémy Glodt, Coralie Pintard, Sara Dion, Erick Denamur, Olivier Tenaillon & Adrien Launay
Though microbial ecology of the gut is now a major focus of interest, little is known about the molecular determinants of microbial adaptation in the gut. Experimental evolution coupled with whole genome sequencing can provide insights of the adaptive process. In vitro experiments have revealed some conserved patterns: intermediate convergence, epistatic interactions between beneficial mutations and mutations in global regulators. To test the relevance of these patterns and to identify the selective pressures acting in...

Registration Year

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  • Paris Diderot University
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  • Ohio Dominican University
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  • Spanish National Research Council
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  • Heidelberg University
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  • École Pratique des Hautes Études
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