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THIERRY Anne-Mathilde

Dernière mise à jour lundi 19 mai 2014, par Emilio ROJAS

THIERRY Anne-Mathilde

Institut Pluridisciplinaire Hubert Curien - IPHC
Département Ecologie, Physiologie et Ethologie - DEPE
Ecophysiologie fonctionnelle

Centre National de la Recherche Scientifique - CNRS
UMR 7178 CNRS/Université De Strasbourg - UdS

23 rue Becquerel, 67087 Strasbourg cedex 2, France

Contact : Anne-Mathilde Thierry


Titre de la thèse : Statut endocrinien et effort reproducteur chez un oiseau marin longévif, le manchot Adélie / Endocrine status and reproductive effort in a long-lived seabird, the Adélie penguin

Période : 2010-2013

Encadrants : Thierry Raclot & Yan Ropert-Coudert


Abstract

In breeding vertebrates, when environmental conditions deteriorate dramatically, and/or when the parent’s energetic state reaches a low threshold, an emergency life-history stage is expressed, redirecting the individual away from the breeding stage in order to survive the perturbation. Hormones play an important role in allowing birds to adjust their behaviour to both predictable (seasonal) and unpredictable regimes of environmental variation. In particular, glucocorticoids are released under life-threatening situations, such as food shortage, severe weather or predation risk, and can trigger the adoption of the emergency stage.

My PhD project aims to get a better understanding of the relationships between hormones, environmental conditions and reproductive effort in a long-lived seabird species, the Adélie penguin (Pygoscelis adeliae). Correlative work allows us to compare endocrine status, environmental conditions, phenology (e.g. laying and hatching dates), parental investment, chick growth and breeding success between years. We also carry out experimental work in order to determine how different levels of hormones affect parental investment and behaviour on land and their consequences on breeding success.

This work is part of the French Polar Institute’s ECOPHY research program. Fieldwork is carried out at the French station Dumont d’Urville (66°40’ S, 140°00’ E) in Adélie land, Antarctica.

Keywords : Adélie penguin, behaviour, corticosterone, environmental conditions, hormones, incubation, parental investment, prolactin.

Publications / Communications

Publications

Communications

  • Beaulieu M, Dervaux A, Thierry AM, Lazin D, Le Maho Y, Ropert-Coudert Y, Spée M, Raclot T, Ancel A. Ecophysiological response of Adélie penguin parents facing contrasting timing of sea-ice retreat. Xth SCAR (Scientific Commitee on Antarctic Research) International Biology Symposium. July 2009. Sapporo, Japon. Student/Early Career Award. (Communication orale)
  • Cottin M, Kato A, Takahashi A, Thierry AM, Ropert-Coudert Y & Raclot T. Rôle de la corticostérone dans le comportement d’approvisionnement chez le manchot Adélie pendant la période d’élevage. 7es journées scientifiques du CNFRA, May 2011. Paris, France. (Communication orale)
  • Cottin M, Kato A, Thierry AM, Le Maho Y, Raclot T & Ropert-Coudert Y. Linking bio-logging and endocrinology – Corticosterone and diving behaviour in Adélie penguins. International Science Symposium on Bio-logging. March 2011. Hobart, Australia. (Communication orale)
  • Cottin M, Kato A, Thierry AM, Takahashi A, Le Maho Y, Raclot T & Ropert-Coudert Y. Corticosterone, foraging behavior and reproductive success in Adélie penguins. 8th European Ornithologists’ Union Conference. August 2011. Riga, Latvia. (Communication orale)
  • Spée M, Beaulieu M, Marchal L, Lazin D, Thierry AM, Chastel O, Le Maho Y & Raclot T. Corticosterone is involved in the control of nest abandonment in breeding Adélie penguins (Pygoscelis Adeliae). 7th European Ornithologists’ Union Conference. August 2009. Zürich, Switzerland. (Communication orale)
  • McCafferty D, Currie J, Thierry AM, Le Maho Y, Gilbert C & Ancel A. Thermal imaging and heat transfer analysis in birds : estimating energy costs in emperor penguins. Society for Experimental Biology Main Meeting. 2010. Prague, Czech Republic. (Communication orale)
  • Spée M, Beaulieu M, Marchal L, Dervaux A, Lazin D, Thierry AM, Le Maho Y, Raclot T. Involvement of corticosterone in the refeeding signal using an experimental approach in fasted captive and free-ranging Adélie penguins. Xth SCAR International Biology Symposium. July 2009, Sapporo, Japon. (Poster)
  • Thierry AM, Massemin S, Handrich Y, Le Maho Y, Kato A & Raclot T. Stress hormone affects incubation behaviour of male Adélie penguins (Pygoscelis adeliae). 4th International Science Symposium on Bio-logging. March 2011. Hobart, Australia. (Communication orale)
  • Thierry AM, Massemin S, Handrich Y, Le Maho Y & Raclot T. Hormone de stress, perturbations météorologiques et investissement parental au cours de l’incubation chez le manchot Adélie. 7es journées scientifiques du CNFRA, May 2011. Paris, France. (Communication orale)
  • Thierry AM, Massemin S, Handrich Y, Le Maho Y & Raclot T. Effect of stress hormone and severe weather conditions on the incubation behaviour of Adélie penguins (Pygoscelis adeliae). 8th European Ornithologists’ Union Conference. August 2011. Riga, Latvia. (Communication orale)