Cynoscion parvipinnis is an important fisheries resource of the Gulf of
California used locally for human consumption. Its aquaculture potential has
recently been demonstrated, and cultured organisms are already available. In
this study, the gonadal developmental stage, proximate composition, fatty
acid profile and other biochemical and biological indices of wild and
cultured fish were characterized. A total of 80 fish, 30 cultured (15 female
and 15 male) and 50 wild (31 female and 19 male), captured in November at
Santa Rosa, Sonora, Mexico, were analyzed. Histological analyses of the
gonads showed that 100% of the wild and cultured fish were at an early
maturation stage. Wild fish had greater body weight, total length and
gonadosomatic index. Cultured female fish (19.64%) possessed a slightly
higher protein content in their gonads than wild females (17.11%), whereas
males had similar values (14.00 and 14.83%). Cultured females (10.85%) and
males (20.48%) had a significantly greater crude fat content than wild fish
(female: 2.05%, male: 11.05%). Palmitic acid was the most abundant fatty
acid (FA), ranging from 128.58-164.84 mg of 16:0 g-1 of gonad wet weight.
After 16:0, highly unsaturated FAs like DHA, ARA and EPA were the major FA
in gonadal tissue; n-3 FAs were quantitatively higher than n-6 FAs, while
the n-3/n-6 ratios ranged from 2.08-2.81. In general, the biochemical
composition of the gonad of wild and cultured organisms at an early
maturation stage was quite similar. These data may serve as indicators of
dietary requirements for a maturation diet for broodstock culture.
Liquid Anaerobic Digestate as a Source of Nutrients for Lipid and Fatty Acid Accumulation by Auxenochlorella Protothecoides
