Cultivo intensivo de juveniles de Pejerrey (Odontesthes bonariensis) en estanques

BERASAIN G. E.; VELASCO C. A.; SHIROJO, Y.; COLAUTTI D. C.; REMES LENICOV M

Aquatic

Universidad de Zaragoza - Sociedad Española de Acuicultura

Lugar: Zaragoza; Año: 2006 p. 940 - 947

1578-4541

Production of juvenile pejerrey (Odontesthes bonariensis) in an intensive culture systemOdontesthes bonariensis) in an intensive culture system In this work, the results of the Odontesthes bonariensis intensive culture experiment are presented. It was performed in two stages, the firstone, just born larvae were bred during 27 days in two tons circular tanks, indoor, and were fed with nauplius of Artemia and artificial food. The second stage was carried out outdoor, in two sections of 50 m2 (A and B) of one pond of 100 m2 previously fertilized. In both, the initial densities were 280 ind/m2. The juveniles were fed with natural zooplankton and artificial food. The breeding process ended at 89 days. Samples were taken periodically in order to obtain information to calculate length and weight growth, survival rates, biomass, production and natural ood availability. The final average lengths were 73.9 and 59.7 mm; average weights 3.59 and 1.79 g; survival of 39.37 and 73.19% and roductions of 3 907 and 3 623 kg/ha/62 day, were obtained in A and B respectively. These production values are the highest reported in Argentina for pejerrey.Odontesthes bonariensis intensive culture experiment are presented. It was performed in two stages, the firstone, just born larvae were bred during 27 days in two tons circular tanks, indoor, and were fed with nauplius of Artemia and artificial food. The second stage was carried out outdoor, in two sections of 50 m2 (A and B) of one pond of 100 m2 previously fertilized. In both, the initial densities were 280 ind/m2. The juveniles were fed with natural zooplankton and artificial food. The breeding process ended at 89 days. Samples were taken periodically in order to obtain information to calculate length and weight growth, survival rates, biomass, production and natural ood availability. The final average lengths were 73.9 and 59.7 mm; average weights 3.59 and 1.79 g; survival of 39.37 and 73.19% and roductions of 3 907 and 3 623 kg/ha/62 day, were obtained in A and B respectively. These production values are the highest reported in Argentina for pejerrey.