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DEPE | Séminaires BEEPSS / BEEPSS Seminars » Mini-Symposium 2nd and 3rd year PhD students

Mini-Symposium 2nd and 3rd year PhD students

Last update: : Thursday 23 June 2016, by Nicolas Busser

Par : Agnes Lewden, Valeria Romano
Date : vendredi 1er juillet 2016 à 13h
Lieu : IPHC, Amphithéâtre Grünewald, bâtiment 25

Agnes Lewden

On being a pelagic bird: Conflicting demands of thermoregulation and digestive processes at sea

Penguins spend more than 80% of their time in water, which leads to potentially high thermoregulatory costs in species that live at high latitudes. King penguins (Aptenodytes patagonicus) forage throughout the day, often at great depth, and rest at the surface during the night. Despite this, energy expenditure has been estimated to be higher at night than during the active phase. We investigated potential mechanisms behind this apparent paradox. As a hint: king penguins seem to be able to avoid extensive heat loss during the day, while no-one knows what happens at night…

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Valeria Romano:

Social networks as a trade-off between optimal information transmission and reduced disease transmission.

Social transmission of behavior and disease can take many forms and may deeply affect an individual’s fitness. In theory, the social network properties optimizing the spreading of information should also increase the disease transmission rate, creating a trade-off between them. Here we investigate in which conditions and networks properties are information or infectious organisms expected to spread freely or be tightly constrained.