Table 2.

Reported opportunities for selection (variance in individual relative fitness) for salmon populations.

I
Males*	Females†	Species	Reference
2.7	1.5	Chinook salmon	Ford (unpublished data)
5.7	4.5	Coho salmon	Ford et al. (2006)
3.8–8.0	2.6–8.7	Steelhead	Araki et al. (2007c)
1.3	0.1	Coho salmon	Fleming and Gross (1994)

Mean (SD) Values

^*4.5 (2.4);

^†3.5 (3.0).