Séminaire CEFE : Diversification of Antarctic marine fauna: a phylogeographic and phylogenetic perspective

Lundi 15 avril 2019 – 14h00

Amphithéâtre de la délégation régionale – CNRS
Santigao, Chili

The Southern Ocean has a rich and diverse marine fauna whose history and biogeography are still poorly known. Conducted in collaboration with researchers of many nationalities, the study of the genetic diver-sity of several groups of marine invertebrates, fish and penguins bring light on the historical processes that shaped this biodiversity. On evolutionary scale, the polar front which delimits the Antarctic and sub-Antarctic waters, the Antarctic Circumpolar current which flow through the Southern Ocean and the dis-tances which separate these lands appear as the main actors responsible for the diversification of the marine fauna. However, at a shorter time scale, recent discoveries would indicate changes of another type, such as the break in isolation between the Antarctic and Sub-Antarctic marine provinces as a result of ongoing climate change.

After a PhD in Ecology and Evolution in Montpellier II University, Elie Poulin moved to Chile where he de-veloped a Molecular Ecology Lab, training until now 15 PhD and 10 Master students in the field of phylo-geography and evolution in Antarctic and Subantarctic regions as well in the southern part of South Amer-ica. He is currently a full professor of the Department of Ecological Sciences at the University of Chile, di-rector of PhD program in Ecology and Evolutionary Biology. He is member of the Chilean Oceanographic National Committee and of the Chilean Council of Antarctic Research and is Chile's representative of SCAR (Scientific Committee on Antarctic Research) for Biological Sciences. He develops researches on the evolution and biogeography in the Southern Ocean. During this talk, Dr. Poulin will present new out-comes from his collaborative project “Antarctic Genomics Biodiversity”.

Recent publications:

González-Wevar C., K. Gérard, S. Rosenfeld, T. Saucède, J. Naretto, A. Díaz, S. Morley. P. Brickle & E. Poulin. Cryptic speciation in Southern Ocean Aequiyoldia eightsii (Jay, 1839): Mio-Pliocene trans-Drake separation and diversification. Progress in Oceanography, in press. DOI: 10.1016/j.pocean.2018.09.004.

González-Wevar C.A., Segovia N.I., Rosenfeld S., Ojeda J., Hüne M., Naretto J., Saucède T., Brickle P., Morley S., Féral J.-P., Spencer H.G. & E. Poulin. 2018. Long-distance dispersal in higher latitude sub-Antarctic Siphonaria (Gastropoda: Euthyneura) species. Journal of Biogeog-raphy 45: 874-884. DOI: 10.1111/jbi.13174.

Frugone M.J., Lowther A, Noll D, Ramos, B.1, Pistorius P., Dantas G.P.M., Petry. M.V., Bonadonna F., Steinfurth A., Polanowski, A., Raya Rey A., Lois N. A., Pütz K., Trathan P., Wienecke B., Poulin E. & J.A. Vianna. 2018. Contrasting phylogeographic pattern among Eudyptes penguins around the Southern Ocean: the role of geographic distance and oceanic fronts. Scientific Reports, 8:17481 DOI:10.1038/s41598-018-35975-3

Vianna J., Noll D., Dantas G., Petry M.V., Barbosa A., González-Acuña D., Le Bohec C., Bonadonna F. & E. Poulin. 2017. Marked phylogeo-graphic structure of Gentoo penguin reveals an ongoing diversification process along the Southern Ocean. Molecular Phylogenetics and Evolution, 107: 486-498. DOI: 10.1016/j.ympev.2016.12.003

(Seminar in English or French, depending on the audience)

Contact au CEFE : Thierry Boulinier