This study examines how adult king penguins respond to chronic corticosterone exposure, finding they show resistance and resilience to its negative effects on physiology.

bioRxiv · Aug 4, 2026 · PreprintPhysiology

Major histocompatibility complex class IIB disassortative mate choice in a genetically monogamous seabird

Lucie Thel, Maxime Pineaux, Léa Ribeiro, Étienne Danchin, Shannon Whelan, Scott A. Hatch, Pierrick Blanchard, Sarah Leclaire

The paper examines whether MHC class IIB dissimilarity influences mate choice and divorce in black-legged kittiwakes, finding dissimilar pairing in males but not females and no link to divorce probability.

Proceedings of the Royal Society B Biological Sciences · Aug 1, 2025Peer-reviewedAnimal Behavior & Cognition

Flexible foraging effort shapes Adelie penguin reproductive success across Antarctica and sea ice conditions

Téo Barracho, Gaël Bardon, Aymeric Houstin, Michaël Beaulieu, Pierrick Blanchard, Robin Cristofari, lana lenourry, Thierry Raclot, Clarisse Tabillon, Daniel Zitterbart, Nicolas Lecomte, Céline Le Bohec

This study shows that Adelie penguin foraging effort and trip duration affect reproductive success under varying sea ice conditions, with clear thresholds indicating environmental stress.

bioRxiv · Jul 5, 2025 · PreprintEcology

Declining juvenile survival of Adelie penguins in Antarctica

Téo Barracho, Gaël Bardon, Rémi Choquet, Aymeric Houstin, Alexander Winterl, Michaël Beaulieu, Pierrick Blanchard, Cindy C. Cornet, Robin Cristofari, Thierry Raclot, Sebastian Richter, Nicolas Chatelain, Julien Courtecuisse, Matthieu Brucker, Daniel Paranhos Zitterbart, , Céline Le Bohec

This study finds that juvenile Adelie penguin survival in Antarctica declined by 32% from 2007 to 2020, linked to lower sea ice concentrations near natal colonies post-fledging.

bioRxiv · Aug 23, 2024 · PreprintEcology