CERER-Pisciculture ASBL
Otoliths are calcium carbonate accretions located in the internal ear that develop very early during the ontogeny of teleost fishes. Their morphology evolves during life in relation with genetics and environment and is used as a marker to identify populations and their geographic variations. This study, performed by IRSTEA, aimed to analyse chub (Squalius cephalus) otolith evolution during early life stages in a controlled environment.
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The aim of this project, promoted by the CEFRA-ULiege, is to meet the need for product diversification in Walloon fish farming. The target species is the grayling (Thymallus thymallus), a high-value food fish.
Researches focus on the development and improvement of the breeding practices. As a partner, CERER-Pisciculture is responsible for information dissemination and scientific popularization.
The project is structured in 5 points :
1. Optimization of zootechnical parameters for survival and growth improvement at larval, juvenile and adult stages.
2. Assessment of growth and production potential under a natural temperature regime and in a recirculated system with controlled temperature.
3. Photo-thermal control of sexual maturity and reproduction and improvement of post-spawning breeder survival.
4. Identification and control of pathologies.
5. Sharing of zootechnical information with fish farmers and assessment of production costs.
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