7953

• UCREFRP Catalog Number: 7953
• Author: Miller, W. H., et al.
• Title: Colorado River Fisheries Investigations, 1979 Progress Report - Draft,.
• USFW Year: 1980.
• USFW - Doc Type: ‎(submitted in partial fulfillment of Contract No. 9-07-40l-1016 with the Water and Power Resources Service)‎,
• Copyright Material: NO

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2. Perform histopathological studies on vital organs of Colorado
squawfish and humpback chubs for the effects of selective toxicants.
Acute toxicity of 16 selected chemicals to the Colorado
squawfish and humpback chub
General Objectives:
To determine the relative toxicity of eight organic and eight inorganic
toxicants of the Colorado squawfish.
Specific Objectives:
1. To determine the statistical LC50 and 95% confidence limits of
selected chemicals for three life stages (postlarval, juvenile and
subadult) of squawfish at a water temperature of 17° C.
2. To determine the statistical LC50 and 95% confidence limits of
selected chemicals for juvenile squawfish at water temperatures of 12%
17° and 22° C.
3. To determine the LC50 and 95% confidence limits of selected
chemicals for juvenile squawfish at three salinities (Palouse River
water, artesian well water, University of Idaho, and simulated Willow
Beach water, Arizona) at a water temperature of 17° C.
4. To determine the LC50 and 95% confidence limits of selected