Production of larvae and juveniles of the marine kingfish Odontesthes argentinensis with different feeding frequencies

Author: Mauren dos Santos Oliveira (Currículo Lattes)
Supervisor: Dr Luís André Nassr de Sampaio


The difficulties encountered in feeding larvae and juvenile fish are one of the limiting factors for the success of marine fish farming, so this study was carried out with the aim of evaluating the effects of different feeding frequencies on the survival and growth of larvae and juveniles in the marine kingfish Odontesthes argentinensis. The larvae were fed with Artemia nauplii 1, 2 and 4 times a day and the juveniles (average weight of 96 mg) were fed with ration 2, 4 and 6 times a day, all treatments were carried out in duplicate. The results were analyzed with Analysis of Variance (ANOVA) followed by the Tukey Test at the 95% significance level. Kingfish survival was not significantly affected by the feed frequency employed (P> 0.05),regardless of treatment, survival was always greater than 90%. On the other hand, significant differences were found for growth (P <0.05), the largest larvae and juveniles were those reared with the highest food frequencies. The results of this work demonstrate that the performance of larvae and juveniles of kingfish is improved when they are fed several times a day.