Category Archives: speciation

Evolution 2018: assortative mating, combinatorial speciation and genome dynamics

The Evolution conference in Montpellier is over, and as the sun, wine and great science become a memory, here is my recap of some conference highlights following on from a great first day: A sea of scientists waiting for a … Continue reading

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Posted in adaptation, conferences, evolution, genomics, natural history, next generation sequencing, phylogenetics, population genetics, speciation | Tagged , | Leave a comment

Evolution 2018 Day 1: From genomics in the wild, to new models of selection

It’s Evolution conference time! Evolution has long been my favourite fixture in the conference calendar, with its diverse mix of theoretical and empirical studies that span the full range of evolutionary biology. This year it’s the second Joint Congress on … Continue reading

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Posted in adaptation, community, conferences, evolution, genomics, population genetics, speciation, theory | Tagged , , | 1 Comment

Chromosomal inversions and the maintenance of species barriers

Chromosomal inversions have long fascinated evolutionary biologists for their role in adaptation and speciation. These structural variants are abundant in natural populations and can have diverse evolutionary consequences. They can cause reproductive isolation through hybrid sterility or protect sets of … Continue reading

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Walking, galloping, and sauntering towards genetic differentiation

“This validates, at a major scale (across all vertebrates), what a handful of studies have found within narrow taxonomic groups…” My citation manager has a special folder—elegantly named “TEACHING??”—where papers get stored for eventual use in a classroom. These papers tend to … Continue reading

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Posted in comparative phylogeography, natural history, speciation | Tagged , , | Leave a comment

What’s in a name? A review of cryptic species and species concepts

It is a contentious can of worms. Species concepts are both essential to understand and at the same time incredibly difficult to define. Species names allow us to discuss fundamental units of biodiversity in any ecosystem and study genome evolution, … Continue reading

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Posted in evolution, Molecular Ecology, the journal, speciation, species delimitation | Tagged , , | 1 Comment

DNA sequence data shows that this “living fossil” isn’t so fossilized after all

Living fossils are a tricky concept for evolutionary biology. In principle it seems simple: living organisms that closely resemble creatures seen in the fossil record going back millions of years. Usually they’re a single representative of a fossil record containing … Continue reading

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The genomic architecture of ecological speciation

Speciation reshapes the ways genetic diversity is distributed in the genome — it’s been said that the establishment of reproductive isolation is essentially the evolution of genome-wide linkage disequilibrium. The “genomic islands of speciation” model of ecological isolation imagines genome-wide … Continue reading

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Posted in association genetics, linkage mapping, selection, speciation | Tagged | Leave a comment

Polyploidy in the era of GBS

Ploidy, dear reader, is something that I think about literally all the time. It impacts every facet of my research from the field to the bench to the stats used to analyze data sets. It’s been simultaneously the greatest and the … Continue reading

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Posted in bioinformatics, evolution, genomics, haploid-diploid, Molecular Ecology, the journal, natural history, plants, speciation | Tagged , , , , | 1 Comment

Hybridization and adaptive radiations

As an iconic system in evolutionary biology, I’ve always been interested in African cichlids and the origins of their diversity1. These cichlids represent an adaptive radiation; they’ve evolved rapidly from a single origin to exploit and speciate into open niches … Continue reading

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An Update on the Great BAMM Controversy

Update, 01 August 2016, 2:50PM. This post has been updated to include information contained in the supplemental material of Rabosky et al. 2017, and clarify the difference between branch-specific and tree-wide rate variation. Back in August, I summarized the main … Continue reading

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