INFLUENCE OF TEMPERATURE AND DISSOLVED OXYGEN ON THE ACUTE TOXICITY OF PROFENOFOS TO FATHEAD MINNOWS (PIMEPHALES PROMELAS)

2002 ◽  
Vol 25 (3) ◽  
pp. 231-245 ◽  
Author(s):  
K. N. Baer ◽  
K. Olivier ◽  
C. N. Pope
Keyword(s):  
Acute Toxicity ◽  
Dissolved Oxygen ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Influence Of Temperature

JOINT ACUTE TOXICITY OF ESFENVALERATE AND DIAZINON TO LARVAL FATHEAD MINNOWS (PIMEPHALES PROMELAS)

2003 ◽  
Vol 22 (2) ◽  
pp. 336 ◽  
Author(s):  
Debra L. Denton ◽  
Craig E. Wheelock ◽  
Shauna A. Murray ◽  
Linda A. Deanovic ◽  
Bruce D. Hammock ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Pimephales Promelas ◽  
Fathead Minnows

Joint acute toxicity of esfenvalerate and diazinon to larval fathead minnows (Pimephales promelas)

2003 ◽  
Vol 22 (2) ◽  
pp. 336-341 ◽  
Author(s):  
Debra L. Denton ◽  
Craig E. Wheelock ◽  
Shauna A. Murray ◽  
Linda A. Deanovic ◽  
Bruce D. Hammock ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Pimephales Promelas ◽  
Fathead Minnows

Acute Toxicity of Sodium Chloride, Pentachlorophenol, Guthion®, and Hexavalent Chromium to Fathead Minnows (Pimephales promelas) and Goldfish (Carassius auratus)

1976 ◽  
Vol 33 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Ira R. Adelman ◽  
Lloyd L. Smith Jr. ◽  
Gary D. Siesennop
Keyword(s):  
Sodium Chloride ◽  
Acute Toxicity ◽  
Hexavalent Chromium ◽  
Carassius Auratus ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Goldfish Carassius Auratus ◽  
Significant Difference

The 96-h LC50’s for sodium chloride were 7650 and 7341 mg/liter, for pentachlorophenol 0.21 and 0.22 mg/liter, for Guthion® 1.9 and 2.4 mg/liter, and for hexavalent chromium 48 and 120 mg/liter, for fathead minnows (Pimephales promelas) and goldfish (Carassius auratus), respectively. Threshold LC50’s were reached in 6 days for sodium chloride (7650 and 7322 mg/liter for fathead minnows and goldfish, respectively), and pentachlorophenol (0.21 and 0.21 mg/liter), but were not attained in 11 days (termination of testing) with Guthion® (0.76 and 0.80 mg/liter) and hexavalent chromium (18 and 33 mg/liter). With pentachlorophenol and Guthion® goldfish were initially more resistant, but by termination there was no significant difference in LC50’s between the two species. With hexavalent chromium the goldfish were more resistant throughout the 11-day test, and with sodium chloride goldfish were initially more resistant but at attainment of a threshold LC50 were less resistant. Use of toxicity curves for assessment of acute mortality permits interpretation not possible in 96-h tests where LC50’s are computed at 24-h intervals.

Influence of Dissolved Organic Matter on Acute Toxicity of Zinc to Larval Fathead Minnows (Pimephales promelas)

2006 ◽  
Vol 51 (3) ◽  
pp. 438-444 ◽  
Author(s):  
Robert B. Bringolf ◽  
Brady A. Morris ◽  
Connie J. Boese ◽  
Robert C. Santore ◽  
Herbert E. Allen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acute Toxicity ◽  
Dissolved Organic Matter ◽  
Pimephales Promelas ◽  
Fathead Minnows

Chronic Effects of Low Dissolved Oxygen Concentrations on the Fathead Minnow (Pimephales promelas)

1971 ◽  
Vol 28 (8) ◽  
pp. 1119-1123 ◽  
Author(s):  
William A. Brungs
Keyword(s):  
Dissolved Oxygen ◽  
Fathead Minnow ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Low Dissolved Oxygen ◽  
Chronic Effects ◽  
Lower Oxygen ◽  
Time Required ◽  
Oxygen Concentrations

Fathead minnows were exposed to constant dissolved oxygen concentrations (1.0–5.0 mg/liter) for 11 months. The number of eggs produced per female was reduced at 2.0 mg/liter; no spawning occurred at 1.0 mg/liter. Fry growth was reduced significantly at all concentrations below the control (7.9 mg/liter). Fry survival was reduced at 4.0 mg/liter and lower dissolved oxygen concentrations; 18% of the survivors at 4.0 mg/liter were deformed. The time required for hatching was increased at successively lower oxygen concentrations by as much as 50% (from 5.0 under control conditions to 7.8 days at 2.0 mg/liter), but no effect on percentage hatch was observed.

Development of apical pits in chloride cells of the gills of Pimephales promelas after chronic exposure to acid water

1983 ◽  
Vol 41 ◽  
pp. 462-463
Author(s):  
Richard L. Leino ◽  
Jon G. Anderson ◽  
J. Howard McCormick
Keyword(s):  
Confidence Interval ◽  
Chronic Exposure ◽  
Lake Superior ◽  
Pimephales Promelas ◽  
Chloride Cells ◽  
Fathead Minnows ◽  
Secondary Lamellae ◽  
Untreated Water ◽  
Water Ph ◽  
Flow Through

Groups of 12 fathead minnows were exposed for 129 days to Lake Superior water acidified (pH 5.0, 5.5, 6.0 or 6.5) with reagent grade H2SO4 by means of a multichannel toxicant system for flow-through bioassays. Untreated water (pH 7.5) had the following properties: hardness 45.3 ± 0.3 (95% confidence interval) mg/1 as CaCO3; alkalinity 42.6 ± 0.2 mg/1; Cl- 0.03 meq/1; Na+ 0.05 meq/1; K+ 0.01 meq/1; Ca2+ 0.68 meq/1; Mg2+ 0.26 meq/1; dissolved O2 5.8 ± 0.3 mg/1; free CO2 3.2 ± 0.4 mg/1; T= 24.3 ± 0.1°C. The 1st, 2nd and 3rd gills were subsequently processed for LM (methacrylate), TEM and SEM respectively.Three changes involving chloride cells were correlated with increasing acidity: 1) the appearance of apical pits (figs. 2,5 as compared to figs. 1, 3,4) in chloride cells (about 22% of the chloride cells had pits at pH 5.0); 2) increases in their numbers and 3) increases in the % of these cells in the epithelium of the secondary lamellae.

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