Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰

Evol biologist; Asst Prof @ UC Berkeley IntBio, MVZ Herp Curator; chem ecol, molecular/tropical biol, art, politics, frogs. Tweets mine. @rdtarvin.bsky.social

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

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

[bioRxiv Evobio @biorxiv_evobio]

Passive accumulation of alkaloids in putatively non-toxic frogs challenges paradigms of the origins of acquired chemical defenses https://t.co/dt47yXqfSk #biorxiv_evobio

[Santi Ron @santiak]

Un hito extraordinario para la anfibiología
Alcanzamos las 9000 especies de anfibios a nivel global.
El número de especies aumenta gracias al trabajo de taxónomos en todo el mundo que descubren y describen nuevas especies.
La lista completa está disponible en AmphibiaWeb: https://t.co/gp2I3fxiSk

[Mauricio Ortega @biomauro_rtg]

La presentación del @LBI_Ikiam, como parte del Banco Nacional de Recursos Genéticos del Ecuador, #BiobancoIkiam
🦎🐍🐢🐸🐊🧬🧫🧪
#2026CLH

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

#CLH2026 NO DRINKS IN THE CLASSROOMS

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

#CLB2026 this captures my view of the Amazon too. 😍 From Sofía Granados Martínez’s talk in our poison frog symposium

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

Oscar Flores Villela estimates that the cost of describing a new species is between $8000 and $10,000 #CLH2026

[Manuel Sánchez-Nivicela @ClandestineBird]

Firma para detener la ampliación de la carretera que afecta al hábitat del Jambato https://t.co/jNBB2BT39u vía @ChangeorgLatino

[Manuel Sánchez-Nivicela @ClandestineBird]

Para evitar que la única población conocida de Jambato sea sacrificada por el atropello del populismo pseudodesarrollista de Lulu, se necesita de urgencia geólogo o ingeniero civil para asesorar acerca del uso de dinamita en la construcción de la carretera Angamarca - El Corazón

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

Atelopus ignescens (the jambato) is a sentinel for environmental health. Please help us protect it https://t.co/nYKBl50H7U

If you are a geologist/engineer who could help advise on dynamite use for road construction pls DM me ASAP (urgent need)

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

Do I know any journalists interested in covering a story about a highway and the last population of a frog? Please message me. It is time sensitive

[Dr Tiffany Kosch (tiffanykosch.bsky.social)👩‍🔬🤿 @TAKosch]

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

[Field Inclusive @FieldInclusive]

✨ 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: Zoom

Dr. Finney is a cultural geographer whose work reimagines the relationship between African Americans and the outdoors. You won't want to miss this important conversation.

🗓️ Public registration opens July 23, 2025!

A huge thank you to our generous sponsors who make this event possible:
🌲 Sierra Club Foundation ($2,000)
🧬 Tangled Bank Conservation ($500)
🟧 The Land at Hawkins Loop ($250)
Your support helps us keep our programs accessible and inclusive for all.

👉 Follow us for updates and register soon to save your spot!

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

@ethanblinck If you email the ad to me I can forward to the uc berkeley mvz listserv

[Santi Ron @santiak]

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 países.
Es un freno a nuestro desarrollo científico. Será posible que los fabricantes ayuden con control de precios?

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

Genome size evolution in poison frogs at 4pm #Evol2025

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

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

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

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

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

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

[Dr. Rebecca (Becca) Tarvin 🐸 ☠️ 🐍 💚🪰 @frogsicles]

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

[Scott P. Egan @scottpegan]

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

[Harshal Wasnik @harshalwasnik74]

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

[Evolution Students @SSEgrad]

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!

[Evolution Students @SSEgrad]

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.