Isobel Eyres

A career in pursuit of the origin of species: celebrating Roger Butlin’s contributions to the advancement of knowledge and growth of our scientific community

Rui Faria, Jon R. Bridle, Isobel Eyres, Kerstin Johannesson et autres

In 2025, the annual meeting of the Population Genetics Group (PopGroup) returned to Sheffield, U.K., for the third time. The timing could not have been more fitting, given the University of Sheffield is where Roger Butlin built much of his career, and …

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The Genetics of Host Plant Acceptance in Pea Aphids

Isobel Eyres, Hannah Fenton, Jean Christophe Simon, Jean Peccoud et autres

The evolution of host-associated sympatric populations in phytophagous insects (so called "host races") connects adaptive divergence to barriers to gene flow. Pea aphid (Acyrthosiphon pisum) host races specialise on legume species, and because host plant choice leads to assortative mating, the genetic …

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Experimental evolution of local adaptation under unidimensional and multidimensional selection

Nathan J. White, Andrew P. Beckerman, Rhonda R. Snook, Michael A. Brockhurst et autres

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Experimental Evolution of Local Adaptation Under Unidimensional and Multidimensional Selection

Nathan J. White, Andrew P. Beckerman, Rhonda R. Snook, Michael A. Brockhurst et autres

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The evolution of strong reproductive isolation between sympatric intertidal snails

Sean Stankowski, Anja M. Westram, Zuzanna B. Zagrodzka, Isobel Eyres et autres

The evolution of strong reproductive isolation (RI) is fundamental to the origins and maintenance of biological diversity, especially in situations where geographical distributions of taxa broadly overlap. But what is the history behind strong barriers currently acting in sympatry? Using whole-genome sequencing …

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The Past and Future of Experimental Speciation

Nathan J. White, Rhonda R. Snook, Isobel Eyres

Speciation is the result of evolutionary processes that generate barriers to gene flow between populations, facilitating reproductive isolation. Speciation is typically studied via theoretical models and snapshot tests in natural populations. Experimental speciation enables real-time direct tests of speciation theory and has …

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Differential gene expression according to race and host plant in the pea aphid

Isobel Eyres, Julie Jaquiéry, Akiko Sugio, Ludovic Duvaux et autres

Host-race formation in phytophagous insects is thought to provide the opportunity for local adaptation and subsequent ecological speciation. Studying gene expression differences amongst host races may help to identify phenotypes under (or resulting from) divergent selection and their genetic, molecular and physiological …

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Targeted re‐sequencing confirms the importance of chemosensory genes in aphid host race differentiation

Isobel Eyres, Ludovic Duvaux, Karim Gharbi, Rachel Tucker et autres

Host-associated races of phytophagous insects provide a model for understanding how adaptation to a new environment can lead to reproductive isolation and speciation, ultimately enabling us to connect barriers to gene flow to adaptive causes of divergence. The pea aphid (Acyrthosiphon pisum) …

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Genetic Exchange among Bdelloid Rotifers Is More Likely Due to Horizontal Gene Transfer Than to Meiotic Sex

Nicolas Debortoli, Xiang Li, Isobel Eyres, Diego Fontaneto et autres

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Horizontal gene transfer in bdelloid rotifers is ancient, ongoing and more frequent in species from desiccating habitats

Isobel Eyres, Chiara Boschetti, Alastair Crisp, Tom Smith et autres

BACKGROUND: Although prevalent in prokaryotes, horizontal gene transfer (HGT) is rarer in multicellular eukaryotes. Bdelloid rotifers are microscopic animals that contain a higher proportion of horizontally transferred, non-metazoan genes in their genomes than typical of animals. It has been hypothesized that bdelloids …

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Additional file 1: Table S1. of Horizontal gene transfer in bdelloid rotifers is ancient, ongoing and more frequent in species from desiccating habitats

Isobel Eyres, Chiara Boschetti, Alastair Crisp, Thomas P. Smith et autres

Number of reads/sequences retained at each stage of the assembly process. Table S2. Transcript length and read depth in relation to the number of species in which transcripts were identified. Transcripts from each Rotaria species in turn were used as queries in …

Additional file 2: of Horizontal gene transfer in bdelloid rotifers is ancient, ongoing and more frequent in species from desiccating habitats

Isobel Eyres, Chiara Boschetti, Alastair Crisp, Thomas Smith et autres

Survey of four foreign genes in the gDNA of a selection of bdelloid species. (DOCX 4251 kb)