Effect of chlorine dioxide on black tiger shrimp (Penaeus monodon), pathogen and water quality
2000
Suanyuk, N. | Songsrichun, N. | Songpradit, A. | Thapuksorn, W. | Supamattaya, K. (Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources. Dept. of Aquatic Science)
Study of chlorine dioxide was performed in post larvae as well as in juvenile black tiger shrimp (Penaeus monodon). The LC50 at 96-h for post larvae and juvenile individuals were 0.455 and 1.891 ppm, respectively. The effect of chlorine dioxide in the eradication of pathogenic bacteria (Vibrio sp.) was tested by tube dilution and for shrimp virus using bioassay. The chlorine dioxide at concentration 0.25 ppm was capable of eradicating all four strains of Vibrio harveyi and Vibrio sp. within one hour while the concentration 0.75 ppm was capable of eradication of white spot virus (systemic ectodermal and mesodermal baculovirus; SEMBV) and yellow head virus (YHV) within two hours. The use of 0-1.50 ppm chlorine dioxide causes no effect on water pH, salinity, alkalinity, dissolved oxygen and growth of phytoplankton (Skeletonema costatum and Chaetoceros calcitrans).
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