Benoît Perez-Lamarque

I am a postdoc in evolutionary biology interested in interspecific interactions, symbiosis, and especially the question of microbiota evolution. During my Ph.D., I have used and developed modeling approaches to better characterize the evolution of host-microbiota interactions, with a particular emphasis on mycorrhizal networks. My PhD manuscript can be found here.

I am based at the Institute of Biology (IBENS) at the Ecole Normale Supérieure and at the Institute of Systematics, Evolution and Biodiversity (ISYEB) at the National Museum of Natural History (MNHN) in Paris.

Curriculum vitae

2018-2021: Ph.D. student co-advised by Hélène Morlon (ENS), Marc-André Selosse, and Florent Martos (MNHN), Paris.
2018-2021: FIRE doctoral school, CRI, Paris.
2018: Research internship at Harvard University (Naomi Pierce lab).
2014-2018: ENS diploma in Biology, Paris.
2016: Research internship at UC Berkeley (Rosemary Gillespie lab).
2015-2017: Master degree in Evolutionary modeling at ENS & Sorbonne Universités, Paris.
2014-2015: Bachelor degree in Biology at ENS, Paris.
2012-2014: Classe préparatoire BCPST, Lycée Fermat, Toulouse.


1. Perez-Lamarque B, Maliet O, Pichon B, Selosse MA, Martos F, Morlon H, Do closely related species interact with similar partners? Testing for phylogenetic signal in bipartite interaction networks, bioRxiv.


7. Perez-Lamarque B, Öpik M, Maliet O, Afonso Silva AC, Selosse MA, Martos F, Morlon H (2022), Analysing diversification dynamics using barcoding data: The case of an obligate mycorrhizal symbiont, Molecular Ecology, in press.
6. Perez-Lamarque B, Krehenwinkel H, Gillespie R, Morlon H (2022), Limited evidence for microbial transmission in the phylosymbiosis between Hawaiian spiders and their microbiota, mSystems, 7: e01104-21.
5. Armstrong E, Perez-Lamarque B, Bi K, Chen C, Becking LE, Lim JY, Linderoth T, Krehenwinkel H, Gillespie R (2021), A holobiont view of island biogeography: unraveling patterns driving the nascent diversification of a Hawaiian spider and its microbial associates, Molecular Ecology, 31: 1299-1316..
See the associated interview by the Molecular Ecology Blog.
4. Selosse MA, Petrolli R, Mujica MI, Laurent L, Perez-Lamarque B, Figura T, Bourceret A, Jacquemyn H, Li T, Gao J, Minasiewicz J, Martos F (2021), The Waiting Room Hypothesis revisited by orchids : Were orchid mycorrhizal fungi recruited among root endophytes?, Annals of Botany, 129: 259-270.
3. Dorrell RG, Villain A, Perez-Lamarque B, Audren de Kerdrel G, McCallum G, Watson A, ait-Mohamed O, Alberti A, Corre E, Frischkorn KR, Pierella Karlusich JJ, Pelletier E, Morlon H, Bowler C, Blanc G (2021), Phylogenomic fingerprinting of tempo and functions of horizontal gene transfer within ochrophytes, Proceedings of the National Academy of Sciences 118: e2009974118.
2. Perez-Lamarque B, Selosse MA, Öpik M, Morlon H, Martos F (2020), Cheating in the arbuscular mycorrhizal mutualism: a network and phylogenetic analysis, New Phytologist, 226: 1822-1835.
Watch the associated interview ("What we are reading") by the South American Mycorrhizal Research Network.
1. Perez-Lamarque B, Morlon H (2019), Characterizing symbiont inheritance during host–microbiota evolution: Application to the great apes gut microbiota, Molecular Ecology Resources, 19: 1659-1671.


HOME tutorial - detecting vertical transmission in microbiota (GitHub).
Guidelines to measure phylogenetic signals in interaction networks (GitHub).


Training in Mathematics and Statistics for IMALIS Master students at ENS (documents), 2018-2020.
Introduction to Mathematical Modeling in Biology for L3 students at ENS (documents), 2019-2021.
Lecture in the eDNA workshop (organized by Mélanie Roy, UNCUYO): Using eDNA to study the evolution of symbioses (2021).

Instructor in the Transmitted Science workshop: Understanding Macroevolutionary Dynamics using RPANDA (2022).

Outreach (in French)

"On a souvent besoin d'un plus petit que soi" (Savoirs pour tous, ENS Paris, 2018).

"Ma thèse en 180 secondes" (Finale Université PSL, Paris, 2020).

"Modéliser l'évolution des interactions hôte-microorganisme", La Recherche, trimestriel 569 (2022).

46, rue d'Ulm, 75 005 Paris, France
Follow @BPerezLamarque