Contact
43 rue Cuvier
CP26
75005 Paris
Responsabilités dans l'unité
Responsable de l'équipe 3E
Présentation
Bref CV
Current position : Maître de Conférence, MNHN
Qualification : Ph.D., MNHN of Paris (2008) – Integrative taxonomy of the Turridae : phylogeny, species delimitation and barcoding.
Professional background :
- Post-doc, CNRS/MNHN (2012). Impact of the taxonomy on conservation programs.
- Post-doc, Atheris Laboratories (2011). DNA markers for deep phylogeny analyses in Conoidea.
- Post-doc, CNRS/MNHN (2010-2011). Managment of the MarBOL (Marine Barcode of Life) project.
- Post-doc, University of Utah (2008-2009). Species diversity within Conus and conotoxin evolution.
Oceanographic expeditions
- Madang 2012 : Papua-New-Guinea. Marine Biodiversity Workshop. 03/11 – 16/12/2012.
- Guadeloupe 2012 : Guadeloupe. Marine Biodiversity Workshop. 14/06 – 28/06/2012.
- Atimo Vatae 2010 : Madagascar. Marine Biodiversity Workshop. 04/25 – 05/18 2010.
- Miriky 2009 : Madagascar. Collection of deap-sea organisms. 06/23 – 07/04 2009.
- Aurora 2007 : Philippines. Collection of deap-sea organisms. 05/20 – 06/05 2007.
- Santo 2006 : Vanuatu. Marine Biodiversity Workshop. 09/05 – 10/20 2006.
Associate editor : Journal of Molluscan Studies, Molecular Ecology Resources.
Research Interest
Phylogeny, species delimitation, and character evolution
My main reasearch interest is on developing integrative taxonomic approaches to analyze the species diversity, the phylogenetic relationships between species, and their interactions with the environment. Although specialized in the analysis of DNA variability and molecular systematic, my concern is also in developing complementary approaches to propose robust hypotheses based on several characters and criteria.
I am currently working on marine molluscs of the superfamily Conoidea (CONOTAX project).
This hyperdiverse group is a real challenge for taxonomists and molecular approaches have proved useful in proposing robust hypotheses on both species delimitation and phylogenetic relationships. These hypotheses are placed in an integrative framework, as others characters (morphology, anatomy or ecology) are analyzed. The strength of the results also relies on the collaborative aspect : anatomists, morphologists, biochimists, phylogeneticians,etc are all involved in the project. Actually, the interest of the Conoideans, illustrated by the results obtained with the genus Conus, does not only concern their hyperdiversity and their utility as a model to study speciation and diversification pattern in a marine environment, but also on the evolution of the toxins they use to capture their prey. As a result to the adaptation to their environment (and especially to new prey), these toxins (named "conotoxins" for the genus Conus) are particularly diverse, and their evolution is driven by several biochemical and molecular mechanisms. These toxins are moreover of particular interest in medecine, as some have already revealed their potential as therapeuthic drugs. Combining molecular, morphological, anatomical and toxinology approaches also provides a robust framework to analyse the evolution of the group, and in particular the factors that drove their exceptional diversification.
Defining species and their relationships are thus not only interesting for taxonomists, but also for setting up subsequent analysis both for theorical consideration (definition of species, speciation) and concrete applications (conservation biology, interaction with the environment, character evolution, discovery of new drugs,etc).
Projet HYPERDIVERSE, Les clés du succès évolutif: démêler les moteurs de l'hyperdiversification, projet financé par l'ERC
Le projet HYPERDIVERSE, financé par l'ERC et porté par Nicolas Puillandre (ISYEB), a officiellement démarré le 1er octobre 2020, pour une durée de 5 ans. L'objectif du projet est de comprendre comment les néogastéropodes, un groupe de gastéropodes marins prédateurs, ont pu se diversifier autant : on connait 15000 espèces, mais il y en aurait au moins le double attendant d'être découvertes dans les océans. Ces prédateurs ont développé des stratégies de capture de proies faisant intervenir des composés moléculaires telles que des neurotoxines, des anticoagulants ou des anesthésiants. Le projet se propose de reconstruire une phylogénie du groupe, et de tester des hypothèses liées aux processus de diversification, avec des approches phénotypiques, génomiques, transcriptomiques et protéomiques. Si vous voulez en apprendre plus sur le projet et sur ces fascinants mollusques, rendez-vous sur :
Publications
- mars 2024 — Phylogenomics of Neogastropoda: the backbone hidden in the bush. Abstract The molluskan order Neogastropoda encompasses over 15,000 almost exclusively marine species playing important roles in… Systematic Biology vol. 73, n° 3, p. 521-531 ISBN: 1063-5157 Publisher: Oxford University Press (OUP) Type: 10.1093/sysbio/syae010,ISSN1063-5157, 1076-836X
- 2024 — « DNA Barcode-Based Species Diagnosis with MolD » in DNA Barcoding.. vol. 2744, , p. 297-311 Series Title: Methods in Molecular Biology,ISBN978-1-07-163580-3 978-1-07-163581-0
- 2024 — Generic revision of the recent turridae (neogastropoda: Conoidea). Journal of Molluscan Studies , , Publisher: Oxford University Press (OUP) tex.hal_id: hal-04442329 tex.hal_version: v1,
- 2024 — From coral reefs into the abyss: the evolution of corallivory in the Coralliophilinae (Neogastropoda, Muricidae). Coral Reefs , ,,ISSN0722-4028, 1432-0975
- 2024 — Spicy food for the egg-cowries: the evolution of corallivory in the Ovulidae (Gastropoda: Cypraeoidea). Frontiers in Marine Science vol. 10, , p. 1323156 Publisher: Frontiers Media tex.hal_id: hal-04549460 tex.hal_version: v1,
- 2024 — « Species Delimitation and Exploration of Species Partitions with ASAP and LIMES » in DNA Barcoding.. vol. 2744, , p. 313-334 Series Title: Methods in Molecular Biology,ISBN978-1-07-163580-3 978-1-07-163581-0
- 2024 — DeTox: a pipeline for the detection of toxins in venomous organisms. Venomous organisms have independently evolved the ability to produce toxins 101 times during their evolutionary history,… Briefings in Bioinformatics vol. 25, n° 2, bbae094 Number: bbae094 tex.eissn: 1477-4054 tex.orcid-numbers: Fedosov, Alexander/0000-0002-8035-1403 Ringeval, Allan/0009-0008-9300-6298 Farhat, Sarah/0000-0001-7725-2589 Modica, Maria Vittoria/0000-0003-2532-6763 tex.researcherid-numbers: Fedosov, Alexander/J-,ISSN1477-4054
- 2024 — « iTaxoTools 1.0: Improved DNA Barcode Exploration with TaxI2 » in DNA Barcoding.. vol. 2744, , p. 281-296 Series Title: Methods in Molecular Biology,ISBN978-1-07-163580-3 978-1-07-163581-0
- 2024 — Mitogenomic phylogeny of Nassariidae (Neogastropoda: Buccinoidea). Journal of Molluscan Studies vol. 90, n° 3, eyae020 Number: eyae020 tex.eissn: 1464-3766 tex.unique-id: WOS:001260959400002,ISSN0260-1230, 1464-3766
- décembre 2023 — Collaborative Expression: Transcriptomics of Conus virgo Suggests Contribution of Multiple Secretory Glands to Venom Production. Abstract Venomous marine gastropods of the family Conidae are among the most diversified predators in marine realm—in large… JOURNAL OF MOLECULAR EVOLUTION vol. 91, n° 6, p. 837-853 tex.earlyaccessdate: NOV 2023 tex.eissn: 1432-1432 tex.orcid-numbers: Fedosov, Alexander/0000-0002-8035-1403 tex.researcherid-numbers: Fedosov, Alexander/J-5400-2015 tex.unique-id: WOS:001103384800001,ISSN0022-2844