Determination of the Maximum and Minimum Lethal Temperature for Year 0 and Year 1 Silver Pomfret (Pampas argenteus Euphrasen)

摘要

This study was conducted to deteimine the minimum and maximum lethal temperature of two age groups of silver pomfret (Pampas argenteus Euphrasen) Year 0 and Year 1 fish, 38 9 and 55 3%, respectively started to lose their equilibrium at 37°C. The restof the fish lost their equilibiium at 38°C.On the other hand. Year 0 and Year 1 fish, 5 8 and 40% respectively started to lose their equilibrium at 11°C, 55% and 53 3% at 10°C, respectively and the rest lost their equilibrium at 9°C. Fish that losttheir equilibrium died within the day. Fish that lost theii equilibrium at trie upper temperature did not recover when transferred to another tank with cooler water temperature while all fish exposed at 11 and 10°C fully recovered upon gradual increasein water temperature with only 50% recovering when exposed to 9°C. Results indicate that the maximum and minimum temperature of the two age groups of silver pomfret are 37°C and 9°C, respectively.