Guillaume Lavanchy

Guillaume Lavanchy is a researcher at the Department of Ecology and Evolution within the College of Biology and Medicine at the University of Lausanne. His work focuses on evolutionary biology, genomics, and biodiversity conservation, with particular emphasis on insects and amphibians.

• Current affiliation: Department of Ecology and Evolution, University of Lausanne
• Collaborative groups: Groupe Schwander, Groupe Fumagalli, Groupe Perrin

Lavanchy investigates hybridization dynamics, sex chromosome evolution, and non-invasive DNA sampling methods. His research bridges molecular ecology with conservation strategies, including the use of environmental DNA (eDNA) for ecosystem monitoring and the role of citizen science in biodiversity assessment.

Recent publications highlight his contributions to understanding parthenogenesis transitions in stick insects, homomorphic sex chromosomes in amphibians, and transalpine invasive species impacts. His work often involves interdisciplinary approaches, combining genomic data with ecological field studies.

As a co-author on multiple high-impact journal articles and a doctoral graduate from the University of Lausanne, Lavanchy actively contributes to taxonomic revisions, hybrid zone analyses, and conservation policy recommendations.

Key research themes include:

• Evolutionary transitions between sexual and asexual reproduction
• Genomic tools for species delineation and hybrid detection
• Long-term ecological management of wetlands and avian DNA sampling