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The effect of HUFA and vitamin C-enriched rotifers on larval growth and survival of grouper (Epinephelus suillus)
Chavez, D.R.; Estenor, D.G.; Merchie, G.; Lavens, P. (1995). The effect of HUFA and vitamin C-enriched rotifers on larval growth and survival of grouper (Epinephelus suillus), in: Lavens, P. et al. (Ed.) Larvi '95: Fish & Shellfish Symposium, Gent, Belgium, September 3-7, 1995. EAS Special Publication, 24: pp. 170
In: Lavens, P.; Jaspers, E.; Roelants, I. (Ed.) (1995). Larvi '95: Fish & Shellfish Symposium, Gent, Belgium, September 3-7, 1995. EAS Special Publication, 24. European Aquaculture Society: Gent. ISBN 90-71625-14-1. XXVI, 521 pp., more
In: EAS Special Publication. European Aquaculture Society, more

Also published as
  • Chavez, D.R.; Estenor, D.G.; Merchie, G.; Lavens, P. (1995). The effect of HUFA and vitamin C-enriched rotifers on larval growth and survival of grouper (Epinephelus suillus), in: IZWO Coll. Rep. 25(1995). IZWO Collected Reprints, 25: pp. chapter 5, more

Available in  Authors 
  • VLIZ: Open Repository 136043 [ OMA ]
  • VLIZ: Proceedings [2537]
Document type: Conference paper

Keywords
    Fatty acids; Feeding experiments; Growth; Larvae; Survival; Vitamin C; Chlorella M.Beijerinck, 1890 [WoRMS]; Epinephelus suillus (Valenciennes, 1828) [WoRMS]; Rotifera [WoRMS]; Marine

Authors  Top 
  • Chavez, D.R.
  • Estenor, D.G.
  • Merchie, G.
  • Lavens, P., more

Abstract
    Newly-hatched grouper larvae were reared for 24 days at a density of 15 larvae.l-1 in 250-l capacity cylindro-conical tanks filled with 200l seawater. Starting day 2, the larvae were given: Chlorella-fed rotifers (Chl-R) rotifers fed Culture Selco (INVE Aquaculture NV, Belgium) (CS-R), and rotifers fed Culture Selco and consequently enriched for 24h with 20% vitamin C (CSC-R). The rotifer density in the larval tanks was maintained at 15 rotifers.ml-1. The rotifer diet was supplemented with egg yolk until day 5. Each treatment had five replicates. Preliminary results show no significant difference in the survival rate of grouper larvae given Chl-R (4.21±2.8%), CS-R (2.56±0.9%) and CSC-R rotifers (1.89±1.5%). The total length of larvae given CS-R (9.74±1.2mm) and CSC-R rotifers (9.62±1.4mm) were significantly different (P<0.05) when compared with larvae given Chl-R rotifers (8.39±1.13mm). Likewise, the wet weight of the larvae fed CS-R (7.23±2.75mg) and CSC-R rotifers (7.29±3.02mg) was significantly different (P<0.05 from those fed Chl-R rotifers (3.26±1.66mg). The difference in growth between CS-R and CSC-R fed larvae was not significant. Additional runs will be conducted to verify the results of this experiment.

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