The Effect of Decreased Salinity on Survival, Growth, and Oxygen Consumption Rate of Barramundi (Lates calcarifer) Larvae

Sakia Sakia, Hendra Kusuma

Abstract


Barramundi is a high-value aquaculture commodity with significant potential due to its ability to thrive across a wide range of salinities. However, extreme salinity fluctuations can negatively impact the metabolism, growth, and survival of the fry. Therefore, it is crucial to determine the optimal salinity range for cultivation. The results showed that treatment C (19 ppt) yielded the highest survival rate (100 ± 0.00%), while the lowest was observed in treatment A (33 ppt) at 90 ± 11.54%. The highest absolute weight gain (6.89 ± 0.12 g) and absolute length growth (4.05 ± 0.05 cm) were recorded in treatment C (19 ppt), while the lowest were in treatment A (33 ppt), with 4.75 ± 0.30 g and 2.65 ± 0.10 cm, respectively. The highest specific growth rate was also found in treatment C (4.59 ± 0.28% per day), with the lowest in treatment A (3.62 ± 0.41% per day). For oxygen consumption, the highest rate was in treatment C (0.56 ± 0.22 mgO2/g/h), and the lowest was in treatment A (0.22 ± 0.16 mgO2/g/h). The lowest feed conversion ratio (FCR) was in treatment A, with an average value of 2.13 ± 1.70%, while the highest was in treatment C (2.93 ± 0.27%). Water quality parameters remained within a suitable range for barramundi, with a temperature of 28.2–29.5°C and a pH of 7.39–7.30, which align with the SNI 2020 water quality standards.

Keywords


Salinity, Survival, Growth and Oxygen Consumption Rate, Barramundi, Lates calcarifer

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References


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DOI: http://dx.doi.org/10.52155/ijpsat.v53.1.7546

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