Annuaire IPHC

DEPE | Séminaires BEEPSS / BEEPSS Seminars » Maternal thyroid hormones: ecology, evolution and endocrine (...)

Maternal thyroid hormones: ecology, evolution and endocrine disruption

Last update: : Wednesday 28 February 2018, by Nicolas Busser

Presented by: Suvi Ruuskanen, Department of Biology, University of Turku, Finland
Date: Thursday 22th March 2018, 13:00-14:30
Place: IPHC, Amphithéâtre Grünewald, bâtiment 25

Maternal effects are currently acknowledged as important causes of transgenerational phenotypic variation, and a potential mechanism to adapt offspring to predicted environments - thus having a pivotal role in ecology and evolution. Maternally derived hormones constitute a key mechanism underlying maternal effects. Interestingly, while data from humans suggests a prominent role for maternal thyroid hormones (TH) on offspring development, maternal THs have been largely neglected in other taxa and in an ecological and evolutionary context. We study the function, plasticity and evolutionary correlates of maternally derived thyroid hormones within and across avian taxa (altricial and precocial). We also study the role of pollutants as transgenerational TH disruptors. Research methods include international large-scale inter-and intraspecific sample collection and experimental manipulation of hormones and environmental conditions. Our results shed light on an unexplored hormonal mechanism underlying offspring phenotypic variation and potentially fitness.