Transport of post-larvae of Farfantepenaeus brasiliensis Latreille, 1817 at different ages
Author: Mariana Bertolotti Alves Pereira (Currículo Lattes)
Supervisor: Dr Luis Henrique da Silva Poersch
Co-supervisor: Dr Wilson Francisco Britto Wasielesky Junior
Abstract
The transport of live shrimp is an important stage in the development of Brazilian shrimp farming. Post-larvae (PL's) and juveniles are transported from commercial laboratories to different destinations, mainly to final growth farms, and care at this stage is crucial for survival in the nursery population. In order to enable greater survival during the transport of post-larvae of Farfantepenaeus brasiliensis, the present study aimed to determine the best ideal density and temperature for the transport of post-larvae of F. brasiliensis. Post-larvae, of three different ages (PL8, PL16 and PL 24), were submitted to three transport temperatures (18 ° C, 21 ° C and 24 ° C) and three different stocking densities (0.5, 1, 0 and 1.5 PL8 / mL; 0.25, 0.5 and 0.75 PL16 / mL and 0.125, 0.25 and 0,375 PL24 / ml). Statistical analysis of water quality parameters between treatments and survival data was performed using ANOVA, in which decreases were found in the values of dissolved oxygen and pH, the concentration of ammonia was below the safety levels for transport being negatively correlated with the increase in density and temperature. For all ages, the lowest temperature (18 ° C) and the lowest densities were identified as the most suitable for transporting post-larvae due to the higher survival rates and better water quality conditions.