This month, our GBE author spotlight focuses on Dr. Megan Barkdull, assistant curator in the Entomology Department at the Natural History Museum of Los Angeles County.

This month, our GBE author spotlight focuses on Dr. Megan Barkdull, assistant curator in the Entomology Department at the Natural History Museum of Los Angeles County.
@deboraycb.bsky.social, @aidaandres.bsky.social, Tim Connallon & @maxreuter.bsky.social support the intuition that a large fraction of loci under balancing selection will be invisible to standard tests for balancing selection.
How does cooperative living arise from information encoded in a genome?
To highlight this key topic in evolutionary biology, GBE presents its virtual collection on the “Evolution of Sociality.”
Liu et al. characterized the genomic landscape, functional impact, and evolutionary significance of structural variants in three closely related pine species, demonstrating the importance of SVs as a dimension of genomic diversity.
Li & Liu quantified natural selection acting on metabolite abundance in yeast, finding that approximately 28.58% of metabolites were inferred to be potentially under directional selection.
Asaeda et al. show that functional divergence between somatic- and testis-type CYC proteins in Buergeria frogs is at least partly due to a phenylalanine-to-tyrosine substitution.
Murugesan et al. provide very little support for the role of DNA methylation in driving differences in the transcriptional profiles of the two seasonal wing forms of Bicyclus anynana butterflies and in wing metamorphosis.
Miller et al. explored class I/II fumarases, concluding that metabolic signaling and its specific metabolites may provide the driving force for the fumarases' dual function, dual targeting, and interaction with different cellular entities.
The SMBE is proud to welcome our newest group of SMBE Fellows - join us in welcoming Fabrício Almeida-Silva, Róisín Long, and Wen-Cong Huang as they integrate operations @molbioevol.bsky.social and @genomebiolevol.bsky.social
🔗 www.smbe.org/smbe-fellows...
Learn more ⬇️
@csengepetak.bsky.social @jcbnunez.bsky.social et al. provide the first evidence for regions of low recombination in the purple sea urchin genome, several of which display genomic signatures of structural variants.
Hale, @coxevolab.bsky.social et al. find that male–female expression imbalance on the X chromosome is widespread across phrynosomatid lizards.
🔗 academic.oup.com/mbe/article/...
📷 Matthew Hale
This study is featured on the cover of the October issue of MBE.
Generally, introns shorter than ∼30 bp are considered absent from animals. Hadjez et al. show that such ultra-short introns evolved independently at least twice in animals, in two parasitic lineages.
@rom12relle.bsky.social @johnlees.bacpop.org & Chindelevitch present kamino, a reference- and alignment-free method that rapidly builds amino acid phylogenomic alignments directly from proteomes.
Tian & Meyer report alternatively spliced genes with functions related to microtubule organization and neural development, and several genes showing isoform usage strongly associated with behavioral laterality.
🔗 academic.oup.com/gbe/article/...
🖌️ Weiwei Li
@euantheyoung.bsky.social et al. show that the role of life-history trade-offs in shaping estrogen receptor-positive breast cancer risk in European populations appears, at most, small.
Nojiri, @susaki-lab.bsky.social et al. compared the genomes of the immortal Hydra vulgaris and the aging Hydra oligactis. Results suggest that extended lifespan may reflect differences in how core biological processes are organized.
Laumer, @prashantpsharma.bsky.social et al. examined the incidence of Pax family genes across chelicerate phylogeny and interrogated the expression and function of Pax2 and Pax6 homologs in the daddy-longlegs Phalangium opilio.
Aguado et al. investigate the salivary proline-rich protein gene family across 27 primate species to test whether dietary ecology has shaped the evolution of this locus.
@pavelpayne.bsky.social et al. show that bacterial herd immunity can promote homologous recombination, suggesting bacterial immune systems can shape molecular evolution not only by blocking infection but also by regulating genetic exchange
Yerka et al. assembled the first Johnsongrass genome, revealing an evolutionary history of genome instability, including the loss of distinct parental subgenomes.