By Michalis Pavlidis, Constantinos Mylonas
This crucial new ebook brings jointly rising wisdom at the major organic features and aquaculture creation suggestions for the various species cultured all over the world. Edited via prime specialists within the box, chapters were written through the world over identified and revered scientists from around the globe. With info of every significant cultured species incorporated, the publication comprises commercially vital info for a wide and starting to be section of the aquaculture undefined, in addition to these operating in businesses offering the aquaculture exchange with gear, and all aquaculture scholars and researchers.
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Extra info for Sparidae: Biology and aquaculture of gilthead sea bream and other species
Sample text
According to FishBase, D. sargus has the following six subspecies: D. sargus ascensiones (Valenciennes 1830), D. sargus cadenati (de la Paz Bauchot & Daget 1974), D. sargus helenae (Sauvage 1879), D. sargus kotschyi (Steindachner 1876), D. sargus lineatus (Valenciennes 1830), and D. sargus sargus (Linnaeus 1758). 8) has a flat body, pressed on the sides with a forked tail. The normal size range of this species is from 15 to 30 cm, although it may reach a size of up to 45 cm. es. 8 The white sea bream (Diplodus sargus) (FAO).
The common dentex ranges from 20 to 50 cm in size, although it can reach 100 cm in length and a maximum weight of 12 kg. It is a gonochoric species with fish maturing either as males or females without any sex inversion after maturation. However, younger specimens have been reported to be hermaphroditic (Grau et al. 2001). Sexual differentiation normally occurs when the fish reaches a weight of about 70 g and a size of 18–19 cm, at an approximate age of 8 months (Abell´an 2000). Reproduction in the Mediterranean occurs near the coast, from March to June, with a peak in May.
Because sharpsnout sea bream is an omnivorous species (Sala & Ballesteros 1997), vegetable proteins constitute an important part of its natural diet (Mena & Garc´ıa-Garc´ıa 2002). Percentages of up to 60% soy flour in experimental diets do not significantly affect growth or lead to appreciable difference in its organoleptic properties (Hern´andez et al. 2007), while the fatty acid composition makes the fish suitable for human consumption (Rueda et al. 2001; Rond´an et al. 2004). Satisfactory results have also been obtained with diets rich in vegetable oils (Piedecausa et al.