In this seminar, I will begin by discussing the mechanisms of ageing, with a particular focus on telomeres. Specifically, I will examine how different environmental conditions during pre-and post-natal development affect telomere length and dynamics in the yellow-legged gull, Larus michahellis. I will present results from our recent studies investigating the role of maternal glucocorticoids, exposure to prenatal social stressors (e.g. predation risk) and microbiome development in influencing postnatal telomere dynamics and telomere repair mechanisms. For example, our results suggest that mothers can increase telomere length in their offspring by moderately increasing the amount of glucocorticoids (i.e. corticosterone) in their eggs. However, complementary evidence suggests that endogenous glucocorticoid production in response to stressors, such as predation risk, comes at the cost of loss of telomere length. I will also show how the development of the gut microbiome early in life is related to telomere length in the early postnatal period. In the second part of the seminar, I will focus on a different animal model, the Mediterranean field cricket, Gryllus bimaculatus. I will use this invertebrate species to illustrate the links between sex, plasticity and ageing. I will highlight several examples of how the adult sociosexual environment can induce plasticity in the allocation strategies between traits under pre- and post-copulatory sexual selection, and the implications of such changes for lifespan and ageing rates.
https://indico.in2p3.fr/event/31788/
Début : 25/01/2024 à 11:00
Fin : 25/01/2024 à 12:00
Prochains évènements
Retour à l'agendaPrésentation Long Range Plan Nupecc
Speakers: Marek Levitowicz The Nuclear Physics European Collaboration Committee (NuPECC) [1] hosted by the Euro-pean Science Foundation represents today a large nuclear physics community from twenty threecountries, three ESFRI (European Strategy Forum for Research Infrastructures) nuclear physics in-frastructures and ECT* (European Centre for Theoretical Studies in Nuclear Physics and RelatedAreas), as well as from four associated members and ten observers. One of the major objectivesof the Committee is: " ...on a regular basis, the Committee shall organise a consultation of thecommunity leading to the definition and publication of a Long Range Plan (LRP) of Europeannuclear physics. " .To this aim, NuPECC launched the preparation for the new LRP in May 2022 [2]. The bottom-up approach to the LRP, was strengthened by launching an open call for input. The received 159contributions, submitted by more than 400 individual scientists, collaborations, research infrastruc-tures, and institutions in Europe composed a solid basis for the further analysis and elaboration ofthe LRP by 11 Thematic Working Groups (TWG). The TWG covered a large set of topics relevantto the development of nuclear physics namely, Hadron Physics Properties of Strongly InteractingMatter at Extreme Conditions of Temperature and Baryon Number Density, Nuclear Structureand Reaction Dynamics, Nuclear Astrophysics, Symmetries and Fundamental Interactions, Ap-plications and Societal Benefits, Research Infrastructures, Nuclear Physics Tools - Detectors andExperimental Techniques, Nuclear Physics Tools - Machine Learning, Artificial Intelligence, andQuantum Computing, Open Science and Data and Nuclear Science - People and Society.Two working meetings were held at GSI/FAIR in Darmstadt, Germany in October 2023 andin February 2024. The purpose of the first meeting was to draft the LRP recommendations, andthe second meeting was dedicated to finalizing the LRP chapters. A draft of the full LRP2024was presented and discussed with the nuclear physics community at a dedicated three-day TownMeeting in Bucharest, Romania in April 2024. The more than 300-page LRP 2024 documentincluding recommendations of the LRP was approved by NuPECC at its meeting in June 2024 inLund, Sweden.The Executive Summary of the LRP2024 can be found at [3].The presentation will focus on the findings and recommendations of the NuPECC LRP2024.References[1] https : //nupecc.org .[2] https : //nupecc.org/?display = lrp2024/main .[3] https : //www.nupecc.org/lrp2024/Draf t_Executive_Summary_LRP 2024.pd https://indico.in2p3.fr/event/33799/
Présentation Long Range Plan Nupecc avec M Levitowicz
Speakers: Marek Levitowicz https://indico.in2p3.fr/event/33799/