N. Navarro et al., Use of freeze-dried microalgae for rearing gilthead seabream, Sparus aurata L., larvae. II. Biochemical composition, HYDROBIOL, 452(1-3), 2001, pp. 69-77
The objectives of this study were to test whether freeze-dried microalgae a
re nutritionally adequate for rearing rotifers as food for gilthead seabrea
m larvae. The elemental composition (C, N, H) and fatty acid composition we
re analysed in larvae of gilthead seabream, Sparus aurata L., rotifers Brac
hionus plicatilis and Brachionus rotundiformis and freeze-dried microalgae
Nannochloropsis oculata. Four larval feeding treatments were tested: (A) la
rvae fed rotifers cultivated with freeze-dried microalgae and daily additio
n of freeze-dried microalgae to the larval tanks; (B) larvae fed rotifers c
ultivated with freeze-dried microalgae and daily addition of live microalga
e to the larval tanks; (C) larvae fed rotifers cultivated with freeze-dried
microalgae, without addition of microalgae to the larval tank and (D) larv
ae fed rotifers cultivated with live microalgae and daily addition of live
microalgae to the larval tanks. No significant differences were observed be
tween the biochemical composition of larvae with treatment A (with freeze-d
ried microalgae) and the composition of larvae in treatment D that were obt
ained with the acceptable methods for culture systems (with live microalgae
).