Nutrition & Health

Nutritional requirements of marine fish larvae and broodstock

Abstract

As the  Mediterranean production of marine cultured  fish  increases,  the demand for good quality seed has been continuosly arising. To satisfy that increasing demand spawning quality and seed production success must be improved by controlling the nutritional quality of broodstock diets and first-feeding regimes. 

Gonadal development and fecundity in fish are greatly affected by broodstock nutrition in several fish species. 

During the last decade, increasing attention has been paid to the role of different components of broodstock diets such as protein, essential fatty acids, vitamin E, vitamin C, carotenoids and phosphoglycerides. Some authors have also studied the nutritional quality of raw components used in broodstock diets for these species. However, few of them deal with Mediterranean fish species.  A considerable amount of research has been devoted lately to study  the nutritional requirements  of marine fish  larvae. Comparison of the biochemical composition of  eggs and  larvae at different  stages, patterns of  loss and conservation of nutrients during feeding  and  starvation, and feeding experiments controlling live-prey or microdiets  nutrient  composition are some of the most frequently used methods to study nutritional requirements of marine fish larvae.  Most of this research effort was initially related with the essential fatty acid (EFA) requirementsof fis larvae, as early studies showed that  one of the  principal  factors  affecting  the nutritional value of live prey for marine  fish larvae was their EFA content.  Only very few studies have been dedicated to the study of the dietary phosphoglyceride  or fat-soluble vitamin requirement of marine fish larvae, and the nutritional role of other fat soluble compounds such as pigments are still mostly unknown.

Keywords 

Fish,  nutrition,  broodstock,  feeding,  larvae,  marine

Authors

M.S. Izquierdo a, H. Fernandez-Palacios b

a Dpto Biologia, Fac. Ciencias del Mar, Tafira Baja, 35017 Las Palmas, Canary Islands, Spain ´

b Instituto Canario de Ciecias Marinas, Apdo. 56, Telde, 35200 Las Palmas, Canary Islands, Spain

Publication

CIHEAM - Options Mediterraneennes

Download article from the CIHEAM website (PDF)

 

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