Integrating Innovative Approaches for Competitive and Sustainable Performance across the Mediterranean Aquaculture Value Chain

PerformFISH Develops a Genetic Basis and Promising Methods to Improve Sea Bream Feed Conversion Rate by Genetic Selection

Researchers from the IATS-CSIC Nutrigenomics group led by Prof. Jaume Pérez-Sánchez have developed new techniques to help support sea bream aquaculture.

The Ferme Marine du Douhet breeding company provided sea bream juveniles from its breeding program and their pedigree obtained by DNA fingerprinting. The fish were then genetically ranked based on resemblance to theirs parents for the trait of feed conversion at the IFREMER-Palavas Aquaculture Infrastructure by the INRAE-Ifremer group, Genetics in Aquaculture, led by Dr Marc Vandeputte.

Conducted within the framework of PerformFISH, the study aimed also to assess the liver and muscle gene expression profiling of selected markers of growth, lipid metabolism and mitochondria function in fish that have different conversion ratios.

Fish ranked for high and low feed conversion were also monitored for respiratory frequency and physical activity using the AEFishBIT biosensor developed within the AQUAEXCEL2020 project. This device is externally attached to the operculum of free-swimming fish for individual data recording through a 48-h period.

Results of initial data analyses are very promising. They will provide new insights in fish behaviour and energy metabolism for a more efficient and ethical fish farming production.

PerformFISH partners working at the IFREMER-Palavas Aquaculture Infrastructure using FMD genetically pedigreed sea bream, IATS-CSIC