| Since 2005, shrimp livestock of Litopenaeus stylirostris in New Caledonia has dealed with production issues. One of them concerns the lack of postlarvae following high mortality rates in hatcheries. This study aims the evolution of the environmental quality status in three rearing from nauplius to postlarvae stage. Among nutrients, total ammonia nitrogen (TAN), soluble reactive phosphorus (SRP), nitrates and nitrites (NOx) have been quantified. Organic matter was also estimated through dissolved organic nitrogen (DON), urea nitrogen and colored dissolved organic matter (CDOM). Finally, bacteria were followed through bacterial abundance and respiration. The hatchery cycle can be divided in two stages: the first one in which antibiotics were delivered to... |
