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Léa Koch

@laspic.bsky.social
23 followers 117 following 8 posts

PhD candidate investigating how warmer temperatures affect the pace of life and aging patterns in a natural population of common lizards 🦎 ISYEB - Institut de Systématique, Evolution, Biodiversité

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Léa Koch @laspic.bsky.social · 24/07/2026
To find out, we'll be heading back to the Cévennes next September. The plan is to capture individuals born in 2026, identified during our early summer fieldwork, and take phenotypic measurements. Find out more about the internship opportunity via the following link: sfecologie.org/offre/stage-...
sfecologie.org
Stage de terrain – CMR lézard vivipare (Zootoca vivipara) - sfecologie.org
Notre équipe (ISYEB UMR 7205, Paris) recherche quatre étudiant.es souhaitant participer au suivi d’une population naturelle de lézard vivipare (Zootoca vivipara) localisée dans le Massif central. Cett...
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Léa Koch @laspic.bsky.social · 24/07/2026
Looking for interns ! 🦎 What happens to the neonates of common lizards after their first summer? Which environmental factors influence their survival and growth?
sfecologie.org
Stage de terrain – CMR lézard vivipare (Zootoca vivipara) - sfecologie.org
Notre équipe (ISYEB UMR 7205, Paris) recherche quatre étudiant.es souhaitant participer au suivi d’une population naturelle de lézard vivipare (Zootoca vivipara) localisée dans le Massif central. Cett...
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Léa Koch @laspic.bsky.social · 01/06/2026
Thanks ! Ya they are so cool and cute 🦎
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Léa Koch @laspic.bsky.social · 27/05/2026
4. Our results also suggest that the "paradox of stasis” may partly stem from limited temporal resolution in studies. Compensatory mechanisms over generations may mask evolutionary trajectories when analyses focus solely on short-term fitness proxies.
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Léa Koch @laspic.bsky.social · 27/05/2026
3. kin selection provides a plausible framework for understanding our results. Kin selection models predict that dispersers benefit from the success of their resident relatives, and that dispersal primarily arises to mitigate competition among kin.
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Léa Koch @laspic.bsky.social · 27/05/2026
2. We show that dispersers experienced reduced individual fitness during their lifetime, yet their genetic lineages persisted longer through generations. This antagonistic interplay between short- and long-term selection pressures explains how dispersal polymorphism is maintained in the population.
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Léa Koch @laspic.bsky.social · 27/05/2026
1. Using quantitative genetic and pedigree-based approaches, we estimated the heritability, intragenerational and multigenerational selection of dispersal.
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Léa Koch @laspic.bsky.social · 27/05/2026
Happy to see our new paper published today in @royalsocietypublishing.org B ! In it, we present an extensive work on the evolution of dispersal in a natural population of common lizards (Zootoca vivipara) 🦎 doi.org/10.1098/rspb...
doi.org
Short- and long-term antagonistic selection explains dispersal polymorphism in the common lizard
Abstract. Dispersal is a key process that shapes the dynamics, genetic structure and adaptive potential of natural populations, yet persistence of its poly
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