Reproduction, growth, immunity: questioning the energetic trade-offs that condition the health of marine fish facing global change


David Mazurais, Arianna Servili, Cristina Garcia Fernandez

Project type



Programmes APRE (CD29) et SAD volet 1 2020

Project duration

Start Date

December 13, 2021

End Date

June 13, 2023


The mechanisms of energy allocation between the different key functions of an individual are usually complex and difficult to understand. However, they are very important because they determine many of the trade-offs between the physiological processes involved in maintenance (e.g. immunity or maintenance of homeostasis), growth and reproduction. Understanding these mechanisms and in particular their regulation by environmental constraints is now an important issue in order to better predict the impact of climate change on fish species. This project aims to answer two main questions: - The first question, focused on the reproductive function, aims to understand the different energy allocation strategies that determine the quality and quantity of eggs produced by fish species and to understand how the allocation mechanisms governing these strategies are regulated by the environmental factors that are associated with climate change. - The second question seeks to better understand the energy allocation trade-offs between the main physiological functions of European sea bass (in particular, growth, immunity and reproduction) under realistic environmental scenarios (increasing temperature and decreasing seawater pH) predicted for 2100.

The team


Alba Serrat (IEO-CSIC, Mallorca- Espagne),

Marta Muñoz Frigola (UdG, Girona-Espagne),

Fran Saborido-Rey (IIM-CSIC, Vigo-Espagne)