Pengaruh Potassium Media terhadap Pertumbuhan Mutlak, Osmolaritas Hemolymp dan Energi Basal dari Pascalarva Vaname (Litopenaeus vannamei, Boone)

Abstract

Absolute Growth, hemolymp  osmolality, oxygen consumption, and basal energy of  Litopenaeus vannamei postlarvae were investigated. After post larval stage, PL-20, the postlarvae were acclimatized from sea water (25 ppt) to low salinity  water (2 ppt) over 96 h. Treatments consisted of different concentration of K⁺added to distilled water. Four different levels of K⁺ (0, 30, 60, and 90 ppm) were utilized. Ten shrimp were placed in triplicate 40-L glasses aquarium.  Results from the 42-day K+ growth trial indicated significant differences (P< 0.05) in absolute growth, hemolymp osmolality,  oxygen comsumption, and  basal energy. The values in treatment A was significantly higher than than those under the other four treatments. The results suggest treatment C were the optimum K⁺ level for culture  vaname postlarvae in low salinity water.

Keywords :  Litopenaeus vannamei, oxygen comsumption, hemolymp