Gustavo A. Toma
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toma-ga.bsky.social
Gustavo A. Toma
@toma-ga.bsky.social
69 followers 180 following 4 posts
Biologist/Cytogeneticist, who dreams to become a Scientist and discover the secrets of the Universe🌈. Current a PhD Student in Evol.Genetics 🔬(UFSCar/Brazil) interested in speciation, sex chromosomes and chromosome rearrangements.
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Reposted by Gustavo A. Toma
helsenjana.bsky.social
How do new centromeres evolve while staying compatible with the division machinery?

Discover it in our new Nature paper! We show centromeres transition gradually via a mix of drift, selection, and sex, reaching new states that still work with the kinetochore.

👉 doi.org/10.1038/s41586-025-09779-1
November 26, 2025 at 4:21 PM
Reposted by Gustavo A. Toma
barduzzi-rafael.bsky.social
🌺New paper out in @annbot.bsky.social, addressing the morphological disparity of aggregated pollen in mimosoid plants!
We found that disparification in the studied groups was mainly driven by morphological innovation and lineage-specific history, not by habitat. academic.oup.com/aob/article-...
Examples of pollen dispersal units in the studied groups (Mimosa and Stryphnodendron clades).
September 30, 2025 at 4:05 PM
Reposted by Gustavo A. Toma
oceanfilly.bsky.social
Are you a PI in a biology field looking for postdocs? Here is a Starter Pack of early career biologists currently seeking postdoctoral positions! (Also if you are searching for a postdoc, let me know if you want to be added!) go.bsky.app/8zZNEGV
July 16, 2025 at 10:42 PM
toma-ga.bsky.social
We are pleased to share our latest paper published today on
IntegrativeZool, which investigates the repetitive DNA content of arowana fishes. You can read more about it on doi.org/10.1111/1749...
July 17, 2025 at 4:48 PM
Reposted by Gustavo A. Toma
mstange.bsky.social
Join our #MEEGene #seminar at @leibnizlib.bsky.social on zoom tomorrow, July 1, 3PM CEST (Berlin) and listen to Duilio Silva from the NIH, National Heart, Lung, and Blood Institute, USA talking about " #Evolution of a mouse #selfishDNA"
Email [email protected] for login details.
June 30, 2025 at 7:11 AM
Reposted by Gustavo A. Toma
sassichico.bsky.social
Cascudos do gênero (Harttia) são modelos valiosos para estudar a evolução de cromossomos sexuais múltiplos. Neste trabalho derivado do meu doutorado, estudamos a evolução de DNAs satélites e sua participação na diferenciação dos cromossomos sexuais deste grupo.

www.nature.com/articles/s42...
Independent evolution of satellite DNA sequences in homologous sex chromosomes of Neotropical armored catfish (Harttia) - Communications Biology
The study on Neotropical armored catfish Harttia explores sex chromosome evolution in four Amazonian species with male-heterogametic systems, revealing that homologous sex chromosomes have species-spe...
www.nature.com
March 31, 2025 at 5:30 PM
toma-ga.bsky.social
doi.org/10.1007/s105...
Petr Ráb (1951–2024) - Chromosome Research
Chromosome Research -
doi.org
March 27, 2025 at 10:46 PM
Reposted by Gustavo A. Toma
austsocfishbiol.bsky.social
🦈🚨 SAVE THE DATE for #ASFB2025 🚨🐠

Get ready to immerse yourself in the ASFB Conference 2025!

🗓️ August 18th to 21st
🌴 #Darwin, #NT!

👀 Learn more and #register at the ASFB Conference 2025 website:
https://buff.ly/4hNyy4I
January 28, 2025 at 2:55 AM
Reposted by Gustavo A. Toma
ruimmfaria.bsky.social
For those interested in sex chromosomes and speciation, Thomas Lenormand from CEFE, University of Montpellier, will visit us and present a seminar about his work on these topics. For more information (and the zoom link), please follow the link here: www.cibio.up.pt/en/events/a-...
A single theory for the evolution of sex chromosomes and the two rules of speciation - Events - Cibio
The mission of the Research Centre in Biodiversity and Genetic Resources is to develop world-class research in the areas of biodiversity and evolutionary bi
www.cibio.up.pt
March 22, 2025 at 12:35 PM
toma-ga.bsky.social
Very excited to share our new investigation conducted by Luciano Pozzobon. Here, we describe a multiple-sex chromosome system Z1Z1Z2Z2/Z1Z2W in two boobies species (Sula datylatra and S. leucogaster).
doi.org/10.1139/gen-...
March 11, 2025 at 2:45 AM
Reposted by Gustavo A. Toma
prosanta.bsky.social
Public Statement on Recent Attacks on Diversity, Equity, and Inclusion Initiatives

Sincerely,
the Executive Board of the ASIH (American Society of Ichthyologists and Herpetologists) #TeamFish #TeamHerps #ASIH

www.asih.org/2025-asih-ex...
Public Statement on Recent Attacks on Diversity, Equity, and Inclusion Initiatives On 10 February 2025, the ASIH Executive Committee voted in support of the following statement: 11 February 2025 The Executive Board of the American Society of Ichthyologists and Herpetologists (ASIH) is concerned about recent turmoil at the United States federal governmental agencies established to promote the advancement of science. Many of our members are supported by federal funds in their scientific pursuits, and this funding is paramount for better understanding the diversity of our natural world. Inquiries into amphibians, reptiles, and fishes have resulted in major breakthroughs in the medical industry, serve as models for our understanding of ecological and evolutionary processes, and have even been used to better prepare our armed forces for international conflicts. Federal funding has supported many of these endeavors. While we understand that funding models change over time, we adamantly condemn any model that does not incorporate cooperation between politicians and the greater scientific community. We also condemn any model that does not fairly provide funds to scientific investigators through peer review by experts in the scientific community. The suggested changes in governmental funding practices centered around diversity, equity, and inclusion (DEI) have resulted in confusion amongst members of ASIH, and the greater scientific community. The Executive Board of ASIH fully supports the idea that diversity and inclusivity of the scientific community leads to greater discoveries in ichthyological and herpetological research and ultimately strengthens us as a community of scholars. Similar to DEI initiatives at ASIH, these initiatives at the federal level are designed to foster and protect diversity in STEM education and research. We want to reaffirm our mission and commitment to all of you: ASIH condemns the recent attacks on diversity, equity, and inclusion initia…
February 11, 2025 at 9:12 PM