Spontaneous mutation in Daphnia pulex can increase or decrease size at birth. Genetic background influences whether mutational increases or decreases are more common: Bruner et al. 2026 @sc.edu doi.org/10.1093/jeb/...

Does transparency make wings fragile? Investigating wing membrane thickness shows that facing conflicting optical and mechanical needs, wings have evolved thick opaque patches around thin transparent patches, like kite frame around fragile sail: Gomez et al. 2026 doi.org/10.1093/jeb/...

In the freshwater snail Physa acuta, mitochondrial genes suppress male function while nuclear genes restore it. This mitonuclear conflict is associated with complex I dysfunction and may affect fertility and fitness: Bererd et al. 2026 doi.org/10.1093/jeb/...

The May issue of JEB is now online! academic.oup.com/jeb/issue/39/5 📸 Roger Butlin fishing for Liolaemus lizards in Chile. Photo Credit: Tom Tregenza.

Lovely article about the impactful and inspirational career of Roger Butlin (now retired). I've always admired how he worked hard at community building and research synthesis, and his research achievements were even more extensive than I realised: doi.org/10.1093/jeb/...

A career in pursuit of the origin of species: celebrating Roger Butlin’s contributions to the advancement and growth of our scientific community: @ruifaria.bsky.social @jonbridle.bsky.social @markravinet.bsky.social @rhondasnook.bsky.social @anjamwestram.bsky.social doi.org/10.1093/jeb/...

Temperature stress slows down the evolutionary arms race between predators and prey as shown by experimental evolution of ciliates and bacteria. This suggests that climate-driven stress may destabilize ecological communities: 🦠 K Plum and @rebeccazufall.bsky.social 2026 🦠 doi.org/10.1093/jeb/...

Coupling molecular evolution with macroevolutionary transitions in a pheromone system including the three amphibian orders 🐸 María Torres-Sánchez 2026 🐸 doi.org/10.1093/jeb/...

🐊 Coastal and inland alligators exhibited contrasting physiological responses when exposed to a salinity gradient: coastal alligators maintained sodium balance through a combination of increased renal processing capacity and slightly elevated natremia doi.org/10.1093/jeb/... Konvalina et al. 2026

If #CANPOP is of interest to you, please also have a look at a Special Issue in the Journal of Evolutionary Biology (@jevbio.bsky.social), for which we are currently accepting submissions: academic.oup.com/jeb/pages/ca...

The #editorschoice for this month's issue is: Evolutionary rescue by adaptive specialization in rapidly changing environments by Jermey Draghi @virginiatech.bsky.social doi.org/10.1093/jeb/...

New method for studying social responsiveness and social impact: both shape the expression of social traits. Ignoring variation in responsiveness can limit understanding of social trait evolution: @roriwijnhorst.bsky.social @cdegroot.bsky.social @dingemanselab.bsky.social doi.org/10.1093/jeb/...

📣 Read our latest issue! 📘 academic.oup.com/jeb/issue/39/4 📸 Red-browed Finch (Neochmia temporalis temporalis), an Australian songbird with highly atypical sperm morphology. Most passerines have elongated, corkscrew-shaped sperm, this subspecies has 'tadpole-like' sperm. Photo Credit: Des Boorman

☘️New paper!☘️ Very excited that my 3rd and final data chapter of my PhD with @evoecolab.bsky.social is now published in JEB! We manipulated precipitation and herbivory at field sites in Ontario and Louisiana to test their effects on white clover HCN chemical defense phenotypes

We discovered ribosome-inactivating protein (RIP) genes in Wolbachia, revealing an evolutionary link with mosquitoes. Here we provide new evidence of horizontal gene transfer as a driver of innovation in insects: doi.org/10.1093/jeb/... Lapadula et al. 2026 @mabeltaracena.bsky.social

Phylogenetic analyses across 262 mammal sp. reveal that stronger male-biased sexual dimorphism is associated with lower mitochondrial genetic diversity, suggesting broader links between sexual selection, demography and population genetic structure: doi.org/10.1093/jeb/... de la Peña et al. 2026

How do genetics shape adaptability to diet? Differences in nutritional plasticity for egg production arise from behaviour and physiology—not morphology—revealing how flies adjust reproduction to changing diet: doi.org/10.1093/jeb/... Alves et al. 2026 @gmwalter.bsky.social @monashbiol.bsky.social

A field experiment by @lucasjalbano.bsky.social et al. assessing the roles of drought, herbivory, and local climate on cyanogenesis cline formation and local adaptation in Trifolium repens: doi.org/10.1093/jeb/...

New Blog Post! Behind the scenes of a recent publication in JEB by Konvalina et al: 🐊 Alligator ecotypes physiologically diverge in response to a salinity gradient 🚐 Transporting juvenile #alligators ☺️ Working with behaviourists to minimise stress 🔍 See the experimental set-up shorturl.at/AdxTO

Eight poeciliid fish sp. show no difference in offspring brain size between placental and non-placental maternal strategies. Placental structure and juvenile brain size coevolution may not be a general pattern in vertebrates: Rowinksi et al. 2026 @stockholm-uni.bsky.social doi.org/10.1093/jeb/...

Reproductive fluids enabling cryptic female choice of paternity do not induce concomitant ejaculate-mediated paternal effects in embryos of hybridizing salmonid fishes: Lantiegne et al. 2026 @memorialu.bsky.social doi.org/10.1093/jeb/...

Ecological harshness has a weak influence on reproductive trade-offs in a #greattit population: @lbliard.bsky.social et al. 2026: doi.org/10.1093/jeb/...

How the grey #bushchat combats parasitic eggs at different laying stages: Zhong et al. 2026: doi.org/10.1093/jeb/...

Can genome size predict adaptation to environmental change? We find that genome size explains <2% of phenotypic change. Phenotypic variance may better signal adaptability: Gorné et al. @ecoevoevoeco.bsky.social @brockuniversity.bsky.social @mcgilluniversity.bsky.social doi.org/10.1093/jeb/...

Differential investment in growth and reproduction optimises a life-history trade-off in a species characterised by alternative reproductive tactics doi.org/10.1093/jeb/... Cornwell & Neff

Absence of cytoplasmic incompatibility and high vertical #Wolbachia transmission in a neotropical #drosophilid doi.org/10.1093/jeb/... Magalhães Moreira et al.

We determined the karyotype of Echimys chrysurus from the Amazon, Brazil and discuss the speciation processes and their relationships with the high degree of karyotypic variation: doi.org/10.1093/jeb/... Oliveira da Silva et al.

New paper out in @jevbio.bsky.social Using 58 years of data, we look at the effect of environmental variation on reproductive trade-offs in great tits. With @jsmartin.bsky.social, @dzchilds.bsky.social, Ella Cole, @sheldonbirds.bsky.social, @paniw.bsky.social & Arpat Ozgul doi.org/10.1093/jeb/...

Our genome-wide study of subterranean #amphipods in Japan reveals that #Pseudocrangonyx species shows a complex history involving geographic isolation and secondary contact. Hidden evolution can provide subterranean biodiversity in the dark: Suenaga et al. academic.oup.com/jeb/advance-...

Social partners shape phenotypes in house sparrows: direct & indirect social effects covary in producer-scrounger tactics, forming a multivariate syndrome that constrains trait variation: academic.oup.com/jeb/advance-... @cdegroot.bsky.social @roriwijnhorst.bsky.social @dingemanselab.bsky.social

Individuals can fall apart into their constituent parts via evolutionary reversions in individuality, but this process can occur in two distinct ways that shape the evolution of individuality: doi.org/10.1093/jeb/... @martijnschenkel.bsky.social, @arvidagren.bsky.social & Manus Patten

Associations of dispersal traits with fecundity and clonal expansion among Japanese ant-dispersed sedges Tanaka 2025: doi.org/10.1093/jeb/...

An experimental test for ecologically dependent reproductive isolation across an avian migratory divide Blain et al. 2025: doi.org/10.1093/jeb/...

📣SUBMISSION DEADLINE APPROACHING: 📣 28th February Special Issue: Foundations of Internal Conflicts Guest Edited by @martijnschenkel.bsky.social, @arvidagren.bsky.social, @imprintedgene.bsky.social, Nina Wedell and Manus Patten For more info: academic.oup.com/jeb/pages/ca...

CALL FOR PAPERS 📣 Special Issue: #GenomeArchitecture and #Evolution, organised by @eseb.bsky.social STN "STRiVE": Find out more here: tinyurl.com/2uza525c @ruifaria.bsky.social @kaybiodiversity.bsky.social @clairemerot.bsky.social @petrnguyen.bsky.social @aruizherrera.bsky.social

Evidence for toxin-encoding coinfections driving intransitive dynamics between allelopathic phenotypes in natural #yeast populations: @tommytraverscook.bsky.social et al. doi.org/10.1093/jeb/...

PERSPECTIVE: The evolutionary potential of symbiosis Is symbiosis is a source of innovation? Which evolutionary mechanisms could explain how symbiosis drives or hinders innovation? @treyjscott.bsky.social doi.org/10.1093/jeb/...

Using #simulation, we show that mutants can invade and rescue a population faced with unsustainable environmental change. Mutants can succeed due to both #ecological and #evolvability advantages that emerge in rapidly changing, complex environments: Jeremy Draghi doi.org/10.1093/jeb/...

Heat can make #fruitfly males sterile at temperatures below their lethal limits. We explore if tissue-specific heat shock protein expression can explain why using 6 #Drosophila species: @chsmithson.bsky.social et al. @ejduncan.bsky.social @amandabretman.bsky.social doi.org/10.1093/jeb/...

February issue of @jevbio.bsky.social online now! Read it here: academic.oup.com/jeb/issue/39/2 📸 Juvenile Brown Anole (Anolis sagrei) perched on a branch. Photo Credit: C. Ashlyn Crain.

Do you like your learned society and what it does for you and your research community? Then publish in their journal! This paper by @nicolasgaltier.bsky.social & Co shows that it will only do good, and comes with a handy database of academy-friendly journals. 👇

NEW PAPER with @arvidagren.bsky.social and Manus Patten on evolutionary reversions in individuality now out (as an advance article) at @jevbio.bsky.social (see academic.oup.com/jeb/advance-...). Thread below! [1/8] .

Responsible publication of your research! To help you do this @nicolasgaltier.bsky.social and coauthors have put together a handy database of academia-friendly journals, DAFNEE. You can read about it in their article recently published in @jevbio.bsky.social: doi.org/10.1093/jeb/...

During directional selection, advantageous trait values tend to become associated with earlier reproduction, accelerating the evolutionary response of the trait mean. This can lead to directional change even after selection has stopped: Mitteroecker (2025) doi.org/10.1093/jeb/...

Comparative studies on genetic differentiation between two closely related species of #Drosophila; D. bipectinata and D. malerkotliana: Singh et al. (2025) doi.org/10.1093/jeb/...

Are Darwin's finches affected by climate change? Time-series analyses of beak and body traits, precipitation and temperature show finches are a resilient system, responding mainly to short-term weather variation rather than to long-term climate change: Carrión et al. (2025) doi.org/10.1093/jeb/...

A formal theory of group-level adaptation for obligate eusociality: doi.org/10.1093/jeb/... @kztwyman.bsky.social & @andygardner.bsky.social (2025) #OpenAccess

Some Hawaiian cricket populations are losing the ability to sing. Males on Oahu invest more in sperm competition than males on Kauai by making more sperm and packing more proteins to increase sperm viability and slow female remating: @jessiectanner.bsky.social et al. (2025) doi.org/10.1093/jeb/...

Check out our latest Special Section guest edited by @mitopozzi.bsky.social and Sophie Breton: Beyond ATP: New insight into mitochondrial function and evolution 🎨 Cover image - artwork by Iain G Johnston academic.oup.com/jeb/pages/be...

Wishing all of our followers a Happy New Year 2026! We kick off with the January Issue of JEB online now: academic.oup.com/jeb/issue/39/1 📸 A sea otter (Enhydra lutris) in the water at the Toba Aquarium, Japan. Photo Credit Tomohiro Harano