2004

• UCREFRP Catalog Number: 2004
• Author: MacPhee, C. and M. H. Beleau.
• Title: Acute Toxicity of Selected Chemicals to the Colorado Squawfish
• USFW Year: 1980.
• USFW - Doc Type: An Endangered Species.
• Copyright Material: NO

• 15
r '. F
.~.
~. ~ ,
' ~ T b1 1 Fish load, dissolved oxygen and pH levels occurring in
Appendix a e
bioassays with
postlarval squawfish.
Container Fish load 0 hrs 9G hrs
H.
Conc.
(m~/1) number g/1 D.O. pH D.O. p
_
._ 0.0 71 0.34 7.9 7.8 8.0 8.1
0.5 41 0.28. ~ 8.4 7.6 7.7 8.1
0.7 42 0.24
0.9 ~ 43 0.25 7.7 7.4 8.0 8.I
1.1 44 0.23
1.3 45 0.21 8.4 .
- 7.6 8.0 8.1
Appendix Table ,
2. Cumulative percentage mortality of postlarval squawfish
i
exposed to sel ected concentrations of copper sulfate c
in 96-hour stat
bioassays with simulated Willow Seach water at 17 C-
Container Ela sed time hours
96
Conc.•(mg/1) number 12 24 48 72
0.0 71
0
0
0
0
0
0.5 41 0 0 10 15 15
0.7 42 5 5- 15 20 25
0.9 43 0 5 35 ~40 40
1.1 44 0 20 20 45 50
1.3 45 0 10 35 55 6b