Julio Ayala-López

@ayalopjulio.bsky.social

Hybrid evolution and speciation | PhD student in the theoretical ecology and evolution lab (@thee-bank-lab.bsky.social) at Uni Bern Views are my own. He/him

Happy to share this preprint of one of my PhD chapters with @cbank.bsky.social and @spei.bsky.social! We use a population genetics model and find the conditions under which hybrid incompatibilities can be maintained in an isolated population when BDMI loci are overdominant. 1/3

bioRxiv Evolutionary Biology@biorxiv-evobio.bsky.social · last mo.

The influence of incompatibilities and heterosis on hybrid population genetics https://www.biorxiv.org/content/10.64898/2026.08.04.742766v1

Let biological sex be multifaceted, as all biology is. And when you need to be precise in scientific research, be precise. Say ‘gametic sex’ or ‘chromosomal sex’ or ‘anatomical sex’, or whatever is appropriate to your own work.

Check out our newest preprint! 📝 We find that adaptation on coevolutionary fitness landscapes is highly repeatable, but landscape-specific, and intergenomic epistasis creates coevolutionary fitness load for interacting species due to frequent fitness trade-offs 🏋️

bioRxiv Evolutionary Biology@biorxiv-evobio.bsky.social · 5mo ago

Repeatability of adaptation in interacting species https://www.biorxiv.org/content/10.64898/2026.04.01.715933v1

Amix hispanohablantes, Como @smecoevo.bsky.social estamos organizando este congreso en Julio en Guatemala! 🎉 Con esto, buscamos expandir espacios en la región para compartir e intercambiar ideas. Pueden desde ya inscribirse y enviar sus resúmenes, agradecemos también compartir con sus contactos!

Sociedad Mesoamericana de Ecología y Evolución@smecoevo.bsky.social · last yr.

Hola Bluesky! Les traemos noticias emocionantes 💚✨ Estaremos celebrando el II Congreso Mesoamericano de Ecología y Evolución en del 22 al 25 de Julio en la Universidad del Valle de Guatemala. El registro y envío de resumenes está abierto ya! t.co/uCyw937RVI

Flyer de invitación al II Congreso Mesoamericano de Ecología y Evolución, código QR envía a registro https://t.co/uCyw937RVI

Check out the first paper of my PhD! Here, we highlight recent work and the need for models that account for the —growing— empirical evidence of complex hybrid incompatibilities, relaxing the assumptions of classical models

Evolutionary Journal of the Linnean Society@evojlinnsoc.bsky.social · last yr.

Speciation occurs when populations are reproductively isolated, though the role of intrinsic postzygotic incompatibility (reduced viability of hybrid offspring) is debated. While the BDM model can explain these, @ayajulio.bsky.social argues multi-locus models may offer better insights! 🌍🧪🧬