Publication

PhD offer on chacma baboon evolution and adaptation in South Africa

The goal of this PhD project will be to get a better understanding of the evolution, history and adaptation of chacma baboons in different environments (i.e. biomes). From modern tissue and ancient (archeological) remains collected in different biomes in South Africa, full genomic information will be generated using high throughput sequencing strategies. To do so, the PhD student will have to extract all modern samples for their DNAs, that will be sent for sequencing (bench laboratory work). For archeological remains, all remains will be treated in a dedicated ancient DNA laboratory (Orlando Ludovic Laboratory, France). Sequences obtained will be then analyzed using sets of bio-informatics and population genetics tools. This will allow the student to elucidate the evolutionary origin and history of chacma baboons as well as to look for their key genetic adaptations in specific environments. This project will allow to get new information about the genetic basis of chacma baboons adaptation that enable these wild animals to become successful species in a large diversity of environments, which is a key question in the study of animal biology and conservation. Candidates should have a MSc Honours degree (or equivalent), formation in molecular biology (experience in a laboratory will be a plus), genetics and bioinformatics (expected very good experience in different bioinformatic languages) as well as a valid driver’s licence. Preference will be given to South African students. Students will be based at the Nelson Mandela University’s George Campus. A bursary of R120 000 per year is offered for a period of 3 years (Mars 2023 – February 2026). Candidate are expected to apply to NRF and PJRS bursaries from 2023. Supervisors: Virginie Rougeron (Research Associate at NMU, CRCN at CNRS) and Franck Prugnolle (Research Associate at NMU and DR1 at CNRS), both evolutionary biologists and geneticists, will be the main co-supervisors of this PhD thesis. Michael Fontaine (CR CNRS), specialist in genomics and evolutionary adaptation of organisms in conservation, will co-supervised the student. Contact: virginie.rougeron@cnrs.fr
Read more

Answer to Sharp et al. The origin of Plasmodium vivax: science or story telling?

We thank Sharp et al. (2021) for pointing out the mistakes in the schematic phylogeny presented in Fig. 1 that appeared during the multiple editing of the phylogeny. We indeed agree that Plasmodium gonderi should be basal to the Asian primate Plasmodium (subgenus Plasmodium) and that P. carteri should be between P. vivax-like/P. vivax and P. cynomolgi and not be basal to P. cynomolgi/P. vivax-P. vivax-like. The phylogenies of Figs 1 and 2 have now been redrawn to correct these two points. Fortunately, this does not change what was written in the text and the take home messages of the article. Regarding the fact that Sharp et al. (2021) said that we are blind to the evidence regarding the P. vivax origin, we strongly disagree. We really think that the current evidence is not sufficient yet to conclude regarding the origin of the parasite. We do not say so because we are in favor of one or the other hypothesis (out-of-Africa or out-of-Asia), but simply because the scientific evidence is still not strong enough to draw any clear conclusion. In our review, we explain what we see as the problems/bias/contradictions in the data (from phylogenetics and population genetics), so would not go through those again here.
Read more