We report presence of low levels of alkaloids in “undefended” poison frogs (Hyloxalus, Allobates, Leucostethus, Solverstoneia, Rheobates [!!], also Amazophrynella, Eleutherodactylus…) We provide a perspective about what this means for origins of chemical defense 1/5

I am speaking at Joint Meeting of Ichthyologists and Herpetologists #JMIH25. Please check out my talk if you're here!

✨ Join us in celebrating another year of Field Inclusive! ✨ We’re thrilled to invite you to our Field Inclusive Anniversary Webinar featuring Dr. Carolyn Finney, author of Black Faces, White Spaces. 📅 Date: Saturday, August 23, 2025 🕕 Time: 6:00–7:00pm ET 📍 Location:

In Ecuador, most reagents cost twice as much as they do in other countries. This is a hindrance to our scientific development. Perhaps manufacturers could help with price controls? @NEBiolabs En Ecuador la mayoría de reactivos cuestan el doble de su costo comercial en otros

Genome size evolution in poison frogs at 4pm #Evol2025

Today at 2:45 come learn about how ontogeny affects sequestration efficiency in ☠️🐸 #Evol2025

Today! A complex history of adaptations to high altitude in hummingbird hemoglobin genes from Maia Goel and Ammon Corl. B14 poster (Sunday) #Evol2025

The Egan lab @RiceUniversity is presenting work at @evolmtg! Come see @MaryamRFaghihi talk about resource variation & sexual dimorphism in wasps today at 11am & Michaela Butler give a poster tomorrow on how oak hybridization influences soil microbial communities! #Evol2025

Comparative Transcriptomics Reveals Diet-Associated Gene Expression Patterns in Mammals #Evol2025 #Genomics #AGS

We are now seeking new grad students to serve in the 2026 cohort! GSAC represents student and postdoc interests to SSE Council and facilitates interaction among students, postdocs, and mentors at #Evol2025 and throughout the year. Apply by July 24!

Stop by and visit us at the Joint Student Committee Booth in the Grand Hall during #Evol2025. We have also set up a job posting board for students to find postdoc position information.

Hey #Evol2025 - My colleague @wasp_venom and I are looking for a postdoc for our @NSF - @USDA funded grant to understand the genetic basis of gall formation! Please see that attached ad, and feel free to talk to me @Evol_mtg, or contact Dr. Ellen Martinson directly!

Come here me talk at #Evol2025 about butterfly chemical evolution today (Saturday) at 3pm in room Athens AB (Parallel Evolution I). Stay for Zarley Rebholz on chemical convergence between plants and ladybirds!

Hoy! Today! No herp skills required ! Come at 5:30 and do some fun networking & win prizes. See you there froggos 😎 #Evol2025

Calling all herpetologists and friends at #Evol2025 — @AmphibiaWeb is hosting a meetup on Saturday June 21 from 5:30-6:00 in Oconee River 1. Come play herpetology bingo with us 😂 and win amazing prizes! 😮 please share or I will have to take all the prizes myself 🥹

Calling all herpetologists and friends at #Evol2025 — @AmphibiaWeb is hosting a meetup on Saturday June 21 from 5:30-6:00 in Oconee River 1. Come play herpetology bingo with us 😂 and win amazing prizes! 😮 please share or I will have to take all the prizes myself 🥹

Later that day I’ll tell you about why dendrobatid poison frogs have the largest and smallest anuran genome measured to date! 🐸🧬 Tues June 24 4:00 pm Parthenon 2 6/7 #Evol2025

Tuesday we have two talks. First is Adri Jeckel who will provide an enticing first look at toxin feeding experiments in Epipedobates poison frogs. Can juveniles 👶 sequester as much toxins as adults? Come find out! Tues June 24 2:45 pm Parthenon 2 6/7 #Evol2025

Monday evening during the poster session Sophie Draper will share some of the results from our mad scientist project to evolve chemical defense in fruit flies 🤯🪰 Mon June 23 5:45 pm Grand Hall 2-7 D17 (23rd) 5/7 #Evol2025

Then in the same session María José Navarrete Méndez will present NEW data exploring the evolution of chemical defenses in the increíble harlequin frogs and the possible involvement of bacteria 🤔🧫 Mon June 23 5:15 pm in Parthenon 2 4/6 #Evol2025

We have two talks on Monday. First Valeria Ramírez Castañeda @UCBerkeley will talk about the complex ways that Amazonian snakes 🐍 deal with poisonous frogs, featuring previously unknown resistance mechanisms for some alkaloids. Mon June 23 4:00 pm in Parthenon 2 3/6 #Evol2025