Mathieu Joron

TL;DR: A comparative analysis of existing and novel data is reported in order to quantify the strength and direction of isolating barriers within a well-studied clade of Heliconius, highlighting that increased divergence is associated with the accumulation of stronger and more numerous barriers to gene flow.

TL;DR: The hypothesis that a single gene underlies wing pattern variation in P. dardanus is supported and SNP variation in the H region reveals evidence of non-neutral molecular evolution in the en gene alone and finds evidence for a duplication potentially driving physical constraints on recombination in the lamborni morph.

TL;DR: A morphometric analysis is used to quantify the variation in wing pattern observed in two broods of H. numata with different alleles at the supergene locus, ‘P’, and suggests for the first time that ancestral colour-pattern loci, known to have major effects in closely related species, may contribute to the wing patterns displayed by H.numata, despite the large transfer of effects to thesupergene.

TL;DR: The analysis suggests that sex‐ specific behaviours can make mimicry more beneficial, simply by reducing the effective population size participating in mimicry, and the interaction between mimicry and sex‐specific behaviours may facilitate the evolution of polymorphism via enhanced, fine‐scale local adaptation.

TL;DR: Developing genetic markers that can be amplified from genomic DNA in both H. erato and H. melpomene will have applications in other phylogenetic and genomic studies in the Lepidoptera.