Dear colleagues, We invite submissions to the symposium "Within-organism conflicts" to be held at the 3rd Joint Congress on Evolutionary Biology (https://www.evolutionmeetings.org/), July 26-30, 2024, in Montreal. ABOUT THE SYMPOSIUM Within-organism conflicts arise when the fitness optima of different organismal parts - genes, chromosomes, genomes, cells - do not align. By now, the threat of selfish genetic elements and selfish cell lineages to the integrity of organisms is well-documented, but they have been researched piecemeal and so we lack a common framework for their study. What do different within-organism conflicts have in common? How are they managed so that organisms retain their primacy as the ultimate beneficiaries of adaptation? This symposium will explore both the variety of internal conflicts that exist in nature as well as the variety of ways that organisms cope and adapt in the face of pressure from within. We will bring together empirical researchers studying diverse systems with theorists to stimulate interactions, and we will seek general principles underlying the evolutionary causes and consequences of within-organism conflicts. Our invited speaker is Pavitra Muralidhar from the University of Chicago. REGISTRATION Be sure to register for the conference by May 1 and indicate your interest in our symposium. Details here: https://www.evolutionmeetings.org/registration.html Don't hesitate to get in touch if you have any questions! All the best, Arvid Ågren, agrenj@ccf.org Manus Patten, mmp64@georgetown.edu Martijn Schenkel, m.a.schenkel@rug.nl Manus Patten (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)