86 



Fishery Bulletin 97(1), 1999 



In contrast, white perch G was significantly corre- 

 lated with zooplankton density (G\^=0. 136+4.64x10"^ 

 xizooplankton density), r''^=0.96, P<10 ''). The high 

 significance was due to the highest growth at a time 

 of maximum zooplankton density (520 individuals/ 

 L), but the regression relationship remained the same 

 even with removal of the infiuential point. Lowest 



mean G/Z occurred before the bloom (0.35 ±0.18 SD, 

 M=4), intermediate G/Z during the bloom (1.27 ±1.06, 

 n=2) and highest afterward (2.53 ±2.04, n=2), 

 but these were not significantly different. Although 

 there is a tendency toward increasing G/Z with time 

 (and temperature), it was not statistically significant 

 either. 



