Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/12414
Title: Importance of dietary n-3 hufa for eye development and cone formation along gilthead seabream sparus aurata larval development.
Authors: Roo, Javier 
Socorro Cruz, Juan Antonio
Izquierdo, Marisol 
Hernandez-Cruz, C.M 
Valencia, Antonio
UNESCO Clasification: 251092 Acuicultura marina
240110 Histología animal
Keywords: Larva
Dorada
Sistema visual
Issue Date: 2000
Abstract: Being fish larvae visual feeders, vision plays an important role in larval orientation at first feeding (Blaxter, 1986). Larval trophic behaviour is closely related with the development of the visual capacity, which directly depends on retina organogenesis. In sparids, such as Pagrus major (Kawamura, 1984) and Pagrus auratus (Pankhurst, 1996), the most important changes in the eye structure occur along the lecitotrophic stage as a preparation for prey capture. Neuringer et al.,(1988) has established a critical role for n-3 polyunsaturated fatty acids and, particularly docosahexaenoic acid (DHA) in neural and retinal tissue functions in mammals. Similarly, in larval fish there is a high demand of DHA to form nervous membranes. Bell and Dick (1993) found photoreceptors in the eye, rods and cones accumulate and selectively retain DHA in external segments.Bell et al. (1995) found that feeding juvenile herring a DHA poor Artemia diet during the period of rod development resulted in impaired vision at low light intensities, when rod vision is essential.
URI: http://hdl.handle.net/10553/12414
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