Effects of different dilution water types on the acute toxicity to juvenile pacific salmonids and rainbow trout of glyphosate and its formulated products

1989 ◽  
Vol 43 (3) ◽  
pp. 378-385 ◽  
Author(s):  
M. T. Wan ◽  
R. G. Watts ◽  
D. J. Moul
Keyword(s):  
Rainbow Trout ◽  
Acute Toxicity ◽  
Water Types ◽  
Dilution Water ◽  
Pacific Salmonids

Acute toxicity of Roundup® and Rodeo® herbicides to rainbow trout, chinook, and coho salmon

1987 ◽  
Vol 39 (6) ◽  
pp. 1028-1035 ◽  
Author(s):  
David G. Mitchell ◽  
Peter M. Chapman ◽  
Timothy J. Long
Keyword(s):  
Rainbow Trout ◽  
Acute Toxicity ◽  
Coho Salmon

Assessment of the Acute Toxicity, Growth Impairment, and Flesh Tainting Potential of a Bleached Kraft Mill Effluent on Rainbow Trout (Salmo gairdneri)

1977 ◽  
Vol 34 (6) ◽  
pp. 869-878 ◽  
Author(s):  
D. M. Whittle ◽  
K. W. Flood
Keyword(s):  
Rainbow Trout ◽  
Acute Toxicity ◽  
Continuous Flow ◽  
Effluent Treatment ◽  
Salmo Gairdneri ◽  
Freshwater Ecosystem ◽  
Juvenile Rainbow Trout ◽  
Effluent Concentration ◽  
Kraft Mill Effluent ◽  
Kraft Mill

Static and continuous-flow bioassays utilizing juvenile rainbow trout (Salmo gairdneri) were conducted on a northern Ontario bleached kraft mill effluent to assess the range of acute toxicity and related sublethal effects. The acute toxicity of the total mill effluent, as determined by static bioassay procedures, ranged from a 96-h LC50 value of 14–49.0% vol/vol. The results of these bioassays depended on testing methodology and effluent treatment systems employed by the mill when samples were collected. Continuous-flow bioassays conducted on the effluent Produced 96-h LC50 values of 21.8 and 24.8% vol/vol. Growth rate of juvenile rainbow trout (1–2 g) held under continuous-flow conditions for 18 days was significantly reduced at 6% vol/vol effluent concentration (P < 0.05). Flavor of yearling rainbow trout [Formula: see text] exposed to 3% effluent for 48 h was significantly impaired (P < 0.05). This effluent concentration, the lowest level impairing flavor represents approximately 0.12 of the 96-h LC50 derived from continuous-flow bioassays. No significant flavor impairment was detected in fish exposed for 144 h to a 2% effluent concentration Flavor impairment at a 3% vol/vol effluent concentration, the most sensitive sublethal response measured in this study, may also be the most critical response when assessing the economic impact of a kraft mill discharge to a freshwater ecosystem.

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