Table 3.3. Comparative lifecycle characteristics of Pacific
salmon species (genus Oncorhynchus) found in the Columbia River
Basin. Sources: Olsen et al. 1992a, 1992b; Hymer et al. 1992a, 1992b; Kiefer
et al. 1992.
|
SPECIES
|
SPAWNING AREA
|
REARING AREA
|
AGE
|
OCEAN
DISTRIBUTION
|
RETURN TIME
|
ADULT
|
FECUNDITY
|
| |
|
|
FW
|
Ocean
|
|
|
Age
|
Size (cm)
|
|
| Chinook |
|
|
|
|
|
|
|
|
|
| |
Spring |
tributaries
|
mainstem, tributaries
|
2
|
1-3
|
?
|
Apr-Jul
|
3-6
|
25-40
|
4700-6000
|
| |
Summer |
|
|
|
|
|
|
|
|
|
| |
|
Mid-Columbia R. |
mainstem, tributaries
|
mainstem, tributaries
|
0-1
|
1-4
|
AK-WA
|
May-Jul
|
3-5
|
41-92
|
4900
|
| |
|
Snake R. |
mainstem, tributaries
|
mainstem, tributaries
|
0-1
|
1-3
|
?
|
Jun-Jul
|
3-5
|
24-36
|
3500-4300
|
| |
Fall |
mainstem
|
mainstem
|
0
|
1-5
|
AK-WA
|
Aug-Sep
|
2-6
|
42-101
|
4400-5200
|
| Coho |
small tributaries
|
tributary
|
1
|
1-2
|
WA-OR
|
Aug-Oct
|
2-3
|
40-99
|
2500-3500
|
| Steelhead |
|
|
|
|
|
|
|
|
|
| |
Summer |
tributaries
|
tributary
|
1-3
|
1-5
|
Gulf of AK
|
May-Sep
|
3-5
|
61-73
|
5000-6400
|
| |
Winter |
lower river tributaries
|
tributary
|
1-2
|
1-5
|
Gulf of AK
|
Nov-Jan
|
3-5
|
45-70
|
2200-4000
|
| Sockeye |
streams above lakes
|
cold lakes
|
1-2
|
1-3
|
Gulf of AK
|
May-Jun
|
3-5
|
35-57
|
2600
|
| Chum |
lower river tributaries
|
estuary
|
0
|
3-5
|
?
|
Oct-Nov
|
3-6
|
63-75
|
2200-2300
|
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