CRITICAL THERMAL MAXIMUM OF MACROBRACHIUM-TENELLUM

1. The responses of rising thermal stress (increase in activity, IA, i nitial disorientation, ID, and total disorientation, TD) of Macrobrach ium tenellum acclimated at four temperatures were significantly differ ent (P < 0.001). 2. Lower survival was observed in the organisms that were exposed to a thermal gradient until total disorientation. 3. The increasing temperature caused a thermal disorientation; the final pref erendum was modified significantly (P < 0.051 with respect to the cont rol group (28 degrees C). 4. By definition, the response that correspo nds to the critical thermal maximum in M. tenellum is the TD. Copyrigh t (C) 1996 Elsevier Science Ltd