Universität Basel: PhD Position: Exploring Flatworm Speciation and Biodiversity in the African Great Lakes PhD Position: Exploring Flatworm Speciation and Biodiversity in the African Great Lakes 100%, Starting date 1.9.2025 Dr. Jeremias Brand's research group at the University of Basel offers a PhD position to study flatworm biodiversity in the African Great Lakes. Adaptive radiations-characterized by rapid speciation and remarkable morphological diversity-are key drivers of biodiversity on our planet. Ecological opportunities such as the colonization of new environments like islands or lakes often trigger adaptive radiations. Yet a fundamental question remains unanswered: Why do some lineages radiate while closely related ones do not? This project investigates this evolutionary puzzle by studying Macrostomum flatworm in the African Great Lakes. While cichlid fishes in these lakes represent one of biology's most celebrated examples of an adaptive radiation, we have recently uncovered evidence that tiny flatworms have undergone a parallel but independent radiation in the same waters. This project represents the first investigation of an adaptive radiation in free-living flatworms and will substantially contribute to understanding why speciation occurs in certain lineages but not others. Your position The project brings together two complementary research areas: Speciation Research Conduct fieldwork along lake shores in Zambia and Tanzania to collect flatworm samples Use phylogenetic and population genetic approaches to study speciation patterns Identify and describe new species, contributing to biodiversity research Investigate the role of two contrasting mating systems on speciation rates Meiofauna Ecology Study the role of Macrostomum flatworms in sediment ecosystems Use stable isotope analysis to explore their position in the food web Examine morphological adaptations to sediment environments using confocal microscopy Analyze population structures to understand biodiversity patterns Your profile Essential Requirements MSc in Biology, Evolutionary Biology, Ecology, or a related field Fluency in spoken and written English Strong motivation to develop as a scientist Willingness to conduct regular multi-week field expeditions in East Africa Preferred Experience Knowledge of evolutionary biology concepts Experience with phylogenetics or genomics Familiarity with stable isotope analysis Experience with confocal microscopy or automated image analysis Previous fieldwork experience We offer you Full-time (100%) PhD position with a salary of 47,040-55,000 CHF per year Funding secured for 4 years via a competitive Swiss National Science Foundation Ambizione grant awarded to Dr. Jeremias Brand. Training in evolutionary biology, phylogenetics, and molecular techniques Field research in East Africa, with the opportunity to contribute to fundamental questions in biodiversity science Dynamic research environment in Basel, with connections to the Biozentrum, ETH Zurich, and the Swiss Institute of Bioinformatics Regular seminars with international researchers Basel is a vibrant academic city at the border of Switzerland, Germany, and France. It offers an excellent quality of life and strong international connections.   Application / Contact Please submit your CV, one-page cover letter explaining your motivation and relevant experience, and two reference letters to [email protected] . Starting Date : September 1, 2025 The advert is open until the position is filled For further inquiries, contact Dr. Jeremias Brand at [email protected] . Apply www.unibas.ch