706 



COX 



10 15 20 



WEIGHT OF STRIPED BASS, g 



25 



30 



Fig. 2 A linear regression of the difference between gut and water 

 temperature vs. weights of striped bass, Morone saxatilis, held in a 

 cycling temperature regime (6 cycles/24 hr) with a sinusoidal curve 

 of ±5°C around a 20°C base. Y = 0.079 + 0.023X and r = 0.9952 

 (P < 0.001). The 95% confidence band is for the mean of four new 

 observations at Xj^. The mean differences estimated from the 

 confidence band for fish with an average weight of 10.8 g are 

 illustrated. 



multiple range test (DMRT) identified differences among the 

 responses. All the mean CTMax values were significantly different 

 (P < 0.05) except the two cycling regimes. The mean CTMax values 

 for 0000, 0600, 1200, 1800, and 2400 hr differed only slightly 

 (Table 1), and ANOVA indicated no difference among the time-of- 

 day effects on thermal tolerance (P < 0.75). 



The mean CTMax values for the second series of constant and 

 fluctuating acclimation regimes increased in the order 15, 20, 15 to 

 25 for 1, 2, and 6 cycles/24 hr and 25° C (Table 2). Again ANOVA 

 indicated a high degree of sigiiificant difference within this group of 

 CTMax values (P < 0.001), and DMRT identified the differences. 

 There were no significant differences in mean CTMax (P< 0.05) 

 between the 1 and 2 or the 2 and 6 cycles/244ir temperature regimes, 

 but all other possible combinations of mean CTMax values in this 



