Séminaire du Lundi 27 février |Daniel Souto-Vilaros |11h Salle Louis Thaler

Lundi prochain, Eric Imbert a invité Daniel Souto-Vilaros, un ancien étudiant de l’ISEM, actuellement en thèse à University of South Bohemia (République Tchèque) qui nous parlera de: « Ficus speciation along a mountain gradient. Wasp dispersal as an isolating mechanism.  »

Sa présentation sera en anglais.

Fig pollination is a well known, species-specific, mutualism where both players rely exclusively on each other for reproduction. Despite of some Ficus species having broad distributions, environmental and geographic variations may cause local adaptation of both figs and wasps, thus isolating populations. Along the Mt. Wilhelm altitude graddient in Papua New Guinea, we focus on six Ficus species which appear to be along the ‘speciation continuum.’ We use next generation sequencing techniques in order to identify population genetic structure of both wasps and figs. Additionally, we use ecologically relevant traits for pollinator attraction and reproduction in order to understand the influence pollinating wasps have on geneflow and ultimately speciation.

Venez nombreux l’écouter à 11h, lundi en salle Louis Thaler, bât 22, 2e étage, ISEM, UM.

Séminaire du Lundi 20 février « conf’isem|Alecia Carter|11h Salle Louis Thaler

A la rentrée des vacances de Février, lundi 20 février, nous aurons le plaisir d’entendre Alecia Carter, nouvellement recrutée à l’ISEM dans l’équipe de biologie évolutive humaine; ça sera donc une Conf’isem, suivi d’un petit pot d’accueil;

Alecia nous parlera de: Experimentally-induced traditions in wild Namibian baboons

The formation of culture in animal societies, including humans’, relies on the social transmission of information among individuals in a group. However, phenotypic constraints on the acquisition, application and exploitation of social information may limit the formation of culture within groups. To better understand whether phenotypic constraints on social information use limit the transmission of information within groups, I experimentally seeded three traditions in each of two troops of wild Namibian chacma baboons (Papio ursinus) over two years. Though we observed both directed social learning and withholding of information, which could potentially decrease information flow in groups, the troops rapidly adopted both tasks to form traditions within 3 weeks. I discuss how species differences in (i) information diffusion, (ii) rates of innovation and (iii) social structure may shape the formation of culture.

Venez nombreux salle Louis Thaler bâtiment 22 ISEM, 2e étage, Université de Montpellier, à 11h.