Artemia sp. Proportions and Effects on Survival and Growth of Pintado,Pseudoplatystoma corruscans Larvae |
| |
Authors: | Luis Fernando Beux |
| |
Institution: | Fish Biology and Fish Culture Laboratory (LAPAD), Aquaculture Department , Federal University of Santa Catarina , Rodovia SC 406, No. 3532, Florianópolis, SC, 88066-0000, Brazil |
| |
Abstract: | ABSTRACT The aim of the present study was to evaluate the survival and growth of larvae (L) of pintado, Pseudoplatystoma corruscans, fed different Artemia sp. proportions: 50, 200, 350, 500, 650, 800, and 950 Artemia nauplii per larva per day, in a complete randomized design. Water salinity was 1.7%, and larviculture lasted for a period of 15 days, which was divided into three individual 5-day trials. Larvae were stocked at a density of 15 per liter and kept in the dark. The concentrations of un-ionized ammonia-N and nitrite-N were directly proportional to the increase in prey density (P < 0.05). Regression analysis showed increased survival and growth rates up to 200, 350, and 500 nauplii/L/day, for the first, second, and third trials, respectively. These results indicate that larval food intake is related to ontogenetic development stage. |
| |
Keywords: | Pseudoplatystoma corruscans pintado Artemia sp survival growth |
|
|