Contaminant Exposure in Juvenile Salmon: Table 9

U.S. Dept Commerce/NOAA/NMFS/NWFSC/Publications

NOAA Tech Memo NMFS NWFSC-8: Contaminant Exposure in Juvenile Salmon (cont): table 9

Table 9.
Growth of juvenile chinook salmon over a 40-day period in 1990 and an 84-day period in 1991.



Site

Mean initial weight (g)

Mean final weight (g)

Mean weight increase (g)

Mean initial length (mm)

Mean final length (mm)

Mean length increase (mm)

1990

Green River System
Green River Hatchery
9.4 ± 1.9
13.1 ± 2.6
3.6±1.3
94 ± 6
104 ± 7
9 ± 3
Duwamish Waterway
7.6 ± 1.6
11.3 ± 3.9
3.0 ± 2.3
91 ± 6
100 ± 9
7 ± 4*
Nisqually River System
Kalama Creek Hatchery
13.4 ± 2.4
18.2 ± 3.1
4.6 ± 1.6
111 ± 7
117 ± 7
5 ± 3
Nisqually River estuary
9.3 ± 2.2
10.7 ± 3.1
1.9 ± 1.8*
99 ± 8
100 ± 7
2 ± 4*
Puyallup River System
Puyallup Hatchery
---
---
Puyallup River estuary
8.8 ± 1.2
12.0 ± 2.2
3.0 ± 1.7*
96 ± 5
101 ± 6
4 ± 4

1991

Green River System
Green River Hatchery
7.5 ± 1.4
26.3 ± 7.2
19.0 ± 5.1
87 ± 5
126 ± 11
38 ± 8
Duwamish Waterway
7.3 ± 1.3
25.3 ± 9.6
17.6± 7.4
91 ± 5
122 ± 14
31 ± 11*

* Significantly different than juvenile salmon from their respective reference hatchery (p less than or equal to 0.05).

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