Juan Martínez's Avatar

Juan Martínez

@jjmartinez83.bsky.social

Biologist, evolution fan, and dad of three. Learning to surfskate (and to survive it). Lover of movies, books, and the survival of the fittest… mostly my balance. Science, family, and some random chaos here.

30 Followers  |  64 Following  |  11 Posts  |  Joined: 08.01.2025  |  1.9108

Latest posts by jjmartinez83.bsky.social on Bluesky

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Talk about an in-flight meal.

For the first time, researchers have captured rats hunting bats by grabbing them from the sky. Learn more: https://scim.ag/3Jqldmn

27.10.2025 22:31 — 👍 662    🔁 193    💬 29    📌 134
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Con muchísima alegría compartimos una gran noticia! 🤩
Ya está disponible el Libro de Resúmenes del II Congreso Latinoamericano de Evolución y SMBE Regional Meeting, realizados en Tucumán en julio de 2025.

doi.org/10.30550/j.a...

13.10.2025 19:10 — 👍 8    🔁 6    💬 0    📌 0

Me parece que no habrá Nobel para el Javo la semana que viene.

01.10.2025 00:00 — 👍 0    🔁 0    💬 0    📌 0

¡Muy buena la remera!!

23.09.2025 20:51 — 👍 1    🔁 0    💬 0    📌 0
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LEEB–INECOA en #CLEVOL: mesa sobre dinámicas eco-evolutivas a largo plazo + avances en lapas antárticas y sapitos de panza roja. Ciencia colaborativa y datos para entender la adaptación en tiempo real. #EcoEvo #LatAmScience

02.09.2025 23:41 — 👍 0    🔁 0    💬 0    📌 0

1 Argentina, 2 Francia y 3 para Karina

28.08.2025 22:08 — 👍 0    🔁 0    💬 0    📌 0
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Inbreeding reduces fitness in spatially structured populations of a threatened rattlesnake | PNAS Small and fragmented populations are at high risk of local extinction, in part because of elevated inbreeding and subsequent inbreeding depression....

Thrilled to have a new paper out where we use 12+ years of monitoring data to document the impacts of inbreeding on fitness in eastern massasauga rattlesnakes! www.pnas.org/doi/10.1073/...

20.08.2025 04:12 — 👍 33    🔁 12    💬 1    📌 1
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Footprints of Worldwide Adaptation in Structured Populations of Drosophila melanogaster Through the Expanded DEST 2.0 Genomic Resource Abstract. Large-scale genomic resources can place genetic variation into an ecologically informed context. To advance our understanding of the population g

doi.org/10.1093/molb...
Thrilled to share our new paper in MBE! 🎉 Presenting DEST 2.0: 530 pooled Drosophila populations spanning 12 years across 6 continents. We map genomic footprints of adaptation, from pesticide resistance to seasonal changes. #PopulationGenetics #Drosophila #Genomics #Evolution

19.08.2025 01:34 — 👍 27    🔁 13    💬 1    📌 0
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Un orgullo para la SABE! 🤩
Nuestra socia Carla de Aranzamendi a bordo de la expedición de CONICET y el Schmidt Ocean Institute.
⭐🐙🦀🪸🪼

03.08.2025 00:24 — 👍 7    🔁 3    💬 0    📌 0
Figure showing the experimental overview as a graphic. Remaining alt text taken from the figure caption in the paper: (A) we sampled flies from six wild orchard populations ranging from Homestead, FL, to Lancaster, MA, and established isofemale lines in the laboratory. (B) We returned to a focal orchard in Media, PA, at early- and late-season timepoints and collected flies to capture evolutionary patterns following winter and summer conditions. (C) We then seeded outdoor mesocosms (N = 9) with an outbred population originating from early-season collections in Media, PA, and sampled flies at the end of summer (mid-season) and fall (late-season) to determine if seasonal patterns are recapitulated in experimental populations controlled for migration, drift, and cryptic population structure. (D) Across each wild or experimental context, we sampled flies, established lines in the lab, completed common garden treatment to remove environmental effects, and scored females for abdominal pigmentation. We also conducted pooled DNA sequencing on additional flies sampled from each population to map genomic patterns for candidate pigmentation SNPs.

Figure showing the experimental overview as a graphic. Remaining alt text taken from the figure caption in the paper: (A) we sampled flies from six wild orchard populations ranging from Homestead, FL, to Lancaster, MA, and established isofemale lines in the laboratory. (B) We returned to a focal orchard in Media, PA, at early- and late-season timepoints and collected flies to capture evolutionary patterns following winter and summer conditions. (C) We then seeded outdoor mesocosms (N = 9) with an outbred population originating from early-season collections in Media, PA, and sampled flies at the end of summer (mid-season) and fall (late-season) to determine if seasonal patterns are recapitulated in experimental populations controlled for migration, drift, and cryptic population structure. (D) Across each wild or experimental context, we sampled flies, established lines in the lab, completed common garden treatment to remove environmental effects, and scored females for abdominal pigmentation. We also conducted pooled DNA sequencing on additional flies sampled from each population to map genomic patterns for candidate pigmentation SNPs.

How predictably does complex trait adaptation proceed over space and time in wild populations?
doi.org/10.1093/evle...

Now in @evolletters.bsky.social by @skylerberardi.bsky.social, @paulrschmidt.bsky.social et al.

📷: Dr. Rush Dhillon

31.07.2025 18:35 — 👍 27    🔁 12    💬 0    📌 1

That populations could evolve rapidly was a surprise to many. Even fewer believed that zoo animals could evolve too. We show they actualy do so in this great paper with @sauvedrew.bsky.social and Amy Chabot.
For more info ⬇️

31.07.2025 03:01 — 👍 10    🔁 7    💬 0    📌 1
ERC-funded PhD position available – Pierre de Villemereuil

👋

Interested in working on the evolution of genetic architecture 🧬 of complex traits using linked-read sequencing of thousands of common lizards 🦎 from a wild population and common garden experiment?

#evolution #genetics

Well, I have a PhD offer for you 👇
devillemereuil.legtux.org/erc-funded-p...

08.04.2025 15:54 — 👍 37    🔁 52    💬 1    📌 2
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📢 ¡Atención! Novedades sobre inscripciones, resúmenes, becas y conferencias 🤓
¡Ya está disponible la Tercera Circular del Congreso Latinoamericano de Evolución!
➡️ iiclevol-tuc-2025.wixsite.com/iiclevol

19.03.2025 17:38 — 👍 7    🔁 4    💬 0    📌 0
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Enorme trabajo del Mapa de la policía y de los peritos científicos Willy Pregliasco y Martín Onetto.

Si alguien tiene registros de este hecho, escribe a: registrocolectivo2024@gmail.com

13.03.2025 19:20 — 👍 337    🔁 235    💬 12    📌 16
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LA foto de este día cruel y nefasto.
La calle dice #MileiEstafador.
📸: Matías Baglietto.
#Jubilados

12.03.2025 23:15 — 👍 251    🔁 94    💬 3    📌 7

Me rectifico. País gobernado por garcas!

12.03.2025 23:18 — 👍 0    🔁 0    💬 0    📌 0

País de garcas!!

12.03.2025 23:12 — 👍 0    🔁 0    💬 1    📌 0
El Desastre de Las Memecoins en Argentina es Peor De lo Que Crees
YouTube video by Coffeezilla En Español El Desastre de Las Memecoins en Argentina es Peor De lo Que Crees

🔴 BOMBA

"El Desastre de Las Memecoins en Argentina es Peor De lo Que Crees", el video donde @coffeezilla.bsky.social devela la trama detrás de la estafa de $LIBRA promovida por Javier Milei y sus socios... traducido al español.

Disfruten. 🍿

www.youtube.com/watch?v=ovZE...

02.03.2025 20:59 — 👍 150    🔁 95    💬 6    📌 9

Están cagados!!

02.03.2025 02:51 — 👍 0    🔁 0    💬 0    📌 0
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#RenunciaMilei 228 mil tuits
#Manes 64 mil tuits
#HablaElPelotudo 38 mil tuits
#ElMejorPresidenteDeLaHistoria 34 mil tuits

Están corriendo también en la calle virtual 🏃🏃🏃

02.03.2025 02:43 — 👍 32    🔁 6    💬 1    📌 0

#renunciaMilei

02.03.2025 02:40 — 👍 0    🔁 0    💬 0    📌 0
Image showing the Hobson Lab logo (monk parakeets flying into a social network diagram with R code in the background), pictures of natural-colored green and gray monk parakeets, and head shots of our individually-marked birds showing their color combos and "names" (Blue-Orange-Blue has those colors on the head, cheek, and neck, and is "BOB"). Text says "Postbac position: parakeet sociality & cognition"

Image showing the Hobson Lab logo (monk parakeets flying into a social network diagram with R code in the background), pictures of natural-colored green and gray monk parakeets, and head shots of our individually-marked birds showing their color combos and "names" (Blue-Orange-Blue has those colors on the head, cheek, and neck, and is "BOB"). Text says "Postbac position: parakeet sociality & cognition"

I am recruiting 1-2 postbacs for my parakeet sociality & cognition project! This position is for people finished with undergrad but who have not yet started grad school. Must be totally fascinated by parakeet social drama (there's a lot of it!)🪶🧪 Job ad here: ornithologyexchange.org/jobs/board/s...

27.02.2025 12:26 — 👍 97    🔁 65    💬 1    📌 2
Visual representation of common garden procedure.

Visual representation of common garden procedure.

Our common garden experiment with urban and forest great tits is out early view in Evolution! doi.org/10.1093/evol... @denisreale.bsky.social @annecharmantier.bsky.social

25.02.2025 11:11 — 👍 57    🔁 28    💬 1    📌 1
History – The Long-Term Evolution Experiment

Happy 37th birthday to the LTEE!
the-ltee.org/history/

24.02.2025 15:39 — 👍 250    🔁 75    💬 8    📌 10
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¡El Congreso Latinoamericano de Evolución 2025 te espera! 🧬

📢 Abrimos convocatorias para:
✨ Simposios
✨ Mesas Redondas
✨ Cursos post-congreso

⏳ Fecha límite: 30 de marzo

📝info: iiclevol-tuc-2025.wixsite.com/iiclevol

18.02.2025 16:01 — 👍 2    🔁 3    💬 0    📌 0
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Formulario de Pre-Inscripción La información vertida en el presente formulario, es recopilada por la Escuela de Posgrado de Facultad de Ciencias Agrarias de la Universidad Nacional de Jujuy y el Doctorado en Ciencias Naturales y A...

📢 Preinscribite aquí: forms.gle/hxtFZttG2kbC...
📧 Consultas: docna@fca.unju.edu.ar

✨ No te pierdas esta oportunidad para aprender, debatir y conocer a gente con tus mismas inquietudes científicas. ¡Te esperamos! ✨ 🧐📊

¡Nos vemos en abril para una semana a pura evolución y genética cuantitativa!

13.02.2025 13:31 — 👍 0    🔁 0    💬 0    📌 0

Este curso es una mezcla de teoría, práctica y mucha interacción para que te sumerjas en las bases de la genética cuantitativa y cómo aplicar estos conceptos en poblaciones naturales. 🔥

👩‍🏫 Equipo docente:

Dr. Juan José Martínez
Dr. Mario R. Ruiz Monachesi
Dra. Lucía Sommaro

13.02.2025 13:31 — 👍 0    🔁 0    💬 1    📌 0
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🌿 ¡Sumate al Curso de Genética Cuantitativa Evolutiva! 🔬🧬

¿Querés entender cómo la genética cuantitativa puede explicar por qué los rasgos fenotípicos cambian con el tiempo? 🌱

13.02.2025 13:29 — 👍 0    🔁 0    💬 1    📌 0

Exploring genetic diversity in the species-rich genus Liolaemus: The interplay among isolation by distance, body size, and environmental variability https://www.biorxiv.org/content/10.1101/2025.01.21.634185v1

24.01.2025 22:32 — 👍 3    🔁 1    💬 0    📌 0

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