Doctorant EPHE - PSL / Beauval Nature

Étage 1 - Aile C - Bureau 114

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Google Scholar – ResearchGate – ORCID

Supervisor : Stéphanie Manel (CEFE, EPHE - PSL)

Thesis project: Genetic diversity and conservation of threatened marine species: exploring innovative solutions

 The main objectives of this thesis are: (1) to develop genomic tools adapted to the monitoring of threatened populations and (2) to improve existing genetic diversity indicators in order to provide relevant and accessible information to conservation stakeholders. This second point will seek to valorise the intra-specific genetic component, which is still neglected when assessing the status of IUCN species and guiding conservation decisions. These approaches will be applied specifically to two marine species on the IUCN Red List in the Mediterranean: the angelshark (Squatina squatina) and the bottlenose dolphin (Tursiops truncatus). Genomic analysis of angelshark populations will be based on tissue samples from individuals caught accidentally by fishers, given the difficulty of sampling genetic material from this rare shark. For bottlenose dolphin populations, we will develop an eDNA capture-hybridization method to generate Single Nucleotide Polymorphisms (SNPs) genomic data from eDNA sampled behind dolphin pods by seawater filtration. This latest approach, still at the proof-of-concept stage, will allow us to examine the performance of this non-invasive technique for obtaining intra-specific genetic information. It could replace traditional sampling methods that require tissue collection from living organisms, which runs counter to efforts to conserve imperiled species.

Publications

Faure, N., Manel, S., Macé, B., Arnal, V., Guellati, N., Holon, F., Barroil, A., Pichot, F., Riutort, J-J., Insacco, G., Zava, B., Mouillot, D., Deter, J. (2023). An environmental DNA assay for the detection of Critically Endangered angel sharks (Squatina spp.). Aquatic Conservation: Marine and Freshwater Ecosystems, 33(10), 1088-1097. https://doi.org/10.1002/aqc.3954

Mathon, L., Marques, V., Manel, S., Albouy, C., Andrello, M., Boulanger, E., ... Faure, N., … & Mouillot, D. (2023). The distribution of coastal fish eDNA sequences in the Anthropocene. Global Ecology and Biogeography, 32(8), 1336-1352. https://doi.org/10.1111/geb.13698