The Tolerance of Tilapia mossambica (Peters) to High Temperature

Abstract
The median lethal temperatures for Tilapia mossambica (Peters) at different acclimation temperatures were estimated and the ultimate upper lethal temperature was found to lie between 38.20°C and 38.25° C. The effects of acclimation temperature and period of acclimation upon resistance were also investigated. An average acclimation rate of 1° per 150 minutes was estimated for fish transferred directly from 25° C to 30° C whereas it was observed that fish transferred from 25° to 15° C were not fully acclimated even after 20 days. These data confirm that T. mossambica is a thermophilic species.