J. R. Bridle

Ecological speciation promoted by divergent regulation of functional genes within African cichlid fishes

The paper investigates transcriptome divergence in African cichlid fishes, identifying regulatory variants contributing to ecological speciation through differential gene expression and splicing.

Variation in the strength of selection but no trait divergence between elevational extremes in a tropical rainforest Drosophila

The paper estimates selection and heritability on traits across elevational gradients in Drosophila birchii and finds no trait divergence between elevational extremes despite varying selection pressures.

Environmental effects on genetic variance are likely to constrain adaptation in novel environments

This study examines how genetic variance in leaf traits changes across elevations in two Sicilian daisy species and finds that environmental effects on genetic variance may limit adaptation in novel environments.

Increased adaptive potential in novel environments can be predicted from genetic variance in development time expressed in native environments

The paper shows that genetic variation in development time in native environments predicts survival in novel environments, with faster development linked to better survival.

Social and physical environment independently affect oviposition decisions in Drosophila melanogaster

This study shows that Drosophila melanogaster females adjust oviposition decisions based on social environment and resource distribution, with resource distribution having a greater impact.

Hidden genetic variation in plasticity increases the potential to adapt to novel environments

The paper shows that genetic variation in plasticity increases in novel environments and correlates with fitness, suggesting it aids adaptation despite being hidden in native environments.

Fitness effects of competition within and between species change across species' ranges, and reveal limited local adaptation in rainforest Drosophila

This study shows that competition effects vary across species' ranges, with interspecific competition stronger at range edges and intraspecific competition more impactful at range centers, revealing limited local adaptation in rainforest Drosophila.

Haplotype tagging reveals parallel formation of hybrid races in two butterfly species

Haplotagging reveals parallel formation of a novel hybrid race in two Heliconius butterfly species through divergent haplotypes at major wing pattern loci.

Spatially clustered resources increase aggregation and mating duration in Drosophila melanogaster

This study shows that clustering food resources in Drosophila increases male-male encounters and copulation duration, indicating a mechanism for sperm competition plasticity.

Adaptive divergence generates distinct plastic responses in two closely related Senecio species

This study compares plastic responses of two closely related Senecio species to environmental variation, finding distinct adaptive divergence in their traits and gene expression across elevation gradients.

Low but genetically variable male mating ability in a tropical Drosophila despite fitness benefits of remating

This study examines mating traits in Drosophila birchii, finding low remating rates despite fitness benefits, with heritable variation in most traits but no elevation-based divergence.

Testing for local adaptation and evolutionary potential along altitudinal gradients in rainforest Drosophila: beyond laboratory estimates.

This study tests assumptions of Species Distribution Models by examining altitudinal gradients in Drosophila birchii, finding that ecological limits are driven by biotic interactions and that local adaptation is not evident.