Relative to many of the other tests performed on the fish, the counts of total micronuclei 

 had relatively high within-site variability (Tables 38 and 39) and a relatively low 

 range/SD (Table 29). Despite the probability that species of fish collected in other studies 

 were exposed to very different water quality and hydrographic conditions, have different 

 biological characteristics, and different sensitivities to toxicants, estimates of within-site 

 variability and range/SD were surprisingly similar (Table 41). Relatively high average 

 CVs among fish caught at each site in the present study also had been observed in other 

 species (Table 41). The ranges/SD were relatively low for this measure in three of the four 

 species for which there are micronuclei data (Table 41). 



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