Table 7.

Relative levels of CYP1A protein in liver cytosol from pesticide-exposed Chinook salmon^a

Pesticide	Concentration (μg/l)b	Average ± S.D.c	Ranged
Controle	0	1710 ± 310	1.7
Chlorpyrifos	Solventf	2060 ± 440	2.6
	1.2	1960 ± 360	1.9
	7.3	1480 ± 560*	4.3
Esfenvalerate	Solvent	1600 ± 430	2.5
	0.01	1390 ± 500	4.2
	0.10	1460 ± 420	1.6

^aJuvenile Chinook salmon were exposed to the indicated concentration of pesticide for 96 h as described in Section 2. All treatment groups were statistically similar to untreated controls (P < 0.05).

^bEsfenvalerate concentrations are nominal values and chlorpyrifos concentrations are measured.

^cRelative CYP1A protein levels are the average ± the standard deviation (S.D.) for 10 fish (n = 10), except for the 7.3 μg/l chlor-pyrifos exposure (n = 8).

^dRange values are given as the fold difference in relative protein levels between the lowest and highest individuals.

^eControl fish were not exposed to either pesticides or vehicle and did not go through the experimental testing regimen.

^fSolvent fish were exposed to the highest concentration of vehicle (0.005% MeOH) and went through the full 96 h testing regimen.

^*Statistically different from the solvent-exposed salmon (P < 0.05).