Growth, survival, and osmo-ionic regulation in post larval and juvenile Indian white shrimp, Penaeus indicus, reared under three levels of salinity in a semifloc system

• Published in: Aquaculture 2023-02, Vol.564, p.739042, Article 739042
• Main Authors: Anand, P.S. Shyne, Aravind, R., Balasubramanian, C.P., Kumar, Sujeet, Antony, Jose, Biju, I.F., Sangeetha, V.L., Ambasankar, K., Vijayan, K.K.
• Format: Article
• Language: English
• Subjects: Acclimation; Histological architecture; Native penaeid shrimp; Osmolality; Post larvae
• ISSN: 0044-8486; 1873-5622
• DOI: 10.1016/j.aquaculture.2022.739042

Three sets of experiments were conducted to determine the short- and long-term effects of salinity (3, 25, and 48 ppt) on the post-larval (PL), nursery, and grow-out phases of Penaeus indicus. In Exp I, the salinity acclimation (3 or 5 ppt day−1) effects on the survival of PL4 and PL12 were studied at 3, 25, and 48 ppt. In Exp II, nursery rearing (30 days) of PL12 (0.02 ± 0.01 g) was carried out at 1000 PL m−3. In Exp III, the long-term effects of salinity on osmo-ionic regulatory mechanism of P. indicus juveniles (0.40 ± 0.05 g) was studied at 200 PL m−3 in a semifloc system for 50 days. Exp I revealed that early PL (PL4) was best acclimatized at 25 (79–81%) followed by 3 (61–62%) and 48 ppt (54–56% survival) with no significant effect (p > 0.05) on the rate of acclimation (3 and 5 ppt day−1). Similarly, the advanced PL (PL12) exhibited the highest survival (p  0.05) among the treatments. In Exp III, the juvenile P. indicus recorded the highest (p