Life-cycle exposure of fathead minnows (Pimephales promelas) to an ethinylestradiol concentration below 1 ng/L reduces egg fertilization success and demasculinizes males

2005 ◽  
Vol 20 (2) ◽  
pp. 131-141 ◽  
Author(s):  
Joanne L. Parrott ◽  
Beverley R. Blunt
Keyword(s):  
Life Cycle ◽  
Pimephales Promelas ◽  
Fertilization Success ◽  
Fathead Minnows

Effects of Long-Term Exposure to Carbaryl (Sevin) on Survival, Growth, and Reproduction of the Fathead Minnow (Pimephales promelas)

1972 ◽  
Vol 29 (5) ◽  
pp. 583-587 ◽  
Author(s):  
A. R. Carlson
Keyword(s):  
Life Cycle ◽  
Fathead Minnow ◽  
Pimephales Promelas ◽  
Threshold Concentration ◽  
Fathead Minnows ◽  
Motile Sperm ◽  
High Concentration ◽  
Toxicant Concentration ◽  
Growth And Reproduction

When fathead minnows (Pimephales promelas) were exposed to five concentrations (0.008–0.68 mg/liter) of the insecticide carbaryl for 9 months and throughout a life cycle, the highest concentration prevented reproduction and decreased survival. At the high concentration, testes contained motile sperm and ovaries were in a flaccid condition and appeared to be in a resorptive state. At the 0.68 mg/liter concentration, carbaryl appeared to contribute to mortality of larvae (produced by unexposed parents) within 30 days of hatching. Survival of young grown in the 0.008 mg/liter concentration was reduced. Since no demonstrable effects were noted for survival, growth, or reproduction at the 0.017, 0.062, and 0.21 mg/liter concentrations, this low survival value is considered not due to carbaryl. The 96-hr median tolerance concentration (TL 50) and the lethal threshold concentration (LTC) for 2-month-old fathead minnows were 9.0 mg/liter. The maximum acceptable toxicant concentration (MATC) for fathead minnows exposed to carbaryl in water with a hardness of 45.2 mg/liter and a pH of 7.5 lies between 0.21 and 0.68 mg/liter. The application factors (MATC/96-hr TL50 and MATC/LTC) both lie between 0.023 and 0.075.

EVALUATION OF THE REPRODUCTIVE EFFECTS OF TAMOXIFEN CITRATE IN PARTIAL AND FULL LIFE-CYCLE STUDIES USING FATHEAD MINNOWS (PIMEPHALES PROMELAS)

2007 ◽  
Vol 26 (4) ◽  
pp. 695 ◽  
Author(s):  
Tim D. Williams ◽  
John E. Caunter ◽  
Adam D. Lillicrap ◽  
Thomas H. Hutchinson ◽  
Edward G. Gillings ◽  
...  
Keyword(s):  
Life Cycle ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Full Life Cycle ◽  
Reproductive Effects ◽  
Tamoxifen Citrate ◽  
Full Life

Fathead Minnows (Pimephales promelas) and Goldfish (Carassius auratus) as Standard Fish in Bioassays and Their Reaction to Potential Reference Toxicants

1976 ◽  
Vol 33 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Ira R. Adelman ◽  
Lloyd L. Smith Jr.
Keyword(s):  
Life Cycle ◽  
Sodium Chloride ◽  
Carassius Auratus ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Goldfish Carassius Auratus ◽  
Complete Life Cycle ◽  
Reference Toxicant

Fathead minnows (Pimephales promelas) and goldfish (Carassius auratus) were compared for their suitability as standard bioassay fish. Both species showed the same variability of bioassay results when tested with four toxicants. Fathead minnows are recommended on the basis of their small size and on their capability for use in complete life cycle tests.On the basis of minimum variability of bioassay results, sodium chloride was superior for use as a reference toxicant. Both sodium chloride and pentachlorophenol seemed capable of detecting abnormal fish. On the basis of seven listed criteria either sodium chloride or pentachlorophenol would be acceptable as a reference toxicant.

Responses of Fathead Minnows (Pimephales promelas) During Life-Cycle Exposures to Pulp Mill Effluents at Four Long-Term Receiving Water Study Sites

2009 ◽  
Vol 5 (2) ◽  
pp. 270 ◽  
Author(s):  
Dennis L Borton ◽  
Diana L Cook ◽  
W Kenneth Bradley ◽  
Raymond E Philbeck ◽  
Monique G Dubé ◽  
...  
Keyword(s):  
Life Cycle ◽  
Pimephales Promelas ◽  
Pulp Mill ◽  
Fathead Minnows ◽  
Pulp Mill Effluents ◽  
Study Sites ◽  
Receiving Water

scholarly journals Fathead minnow exposed to environmentally relevant concentrations of metformin for one life cycle show no adverse effects

FACETS ◽  
2021 ◽  
Vol 6 ◽  
pp. 998-1023
Author(s):  
Joanne L. Parrott ◽  
Grazina Pacepavicius ◽  
Kallie Shires ◽  
Stacey Clarence ◽  
Hufsa Khan ◽  
...  
Keyword(s):  
Life Cycle ◽  
Adverse Effects ◽  
Egg Production ◽  
Municipal Wastewater ◽  
Pimephales Promelas ◽  
Gonad Maturation ◽  
Fathead Minnows ◽  
Liver Size ◽  
Lowering Drug

Metformin is a glucose-lowering drug taken for diabetes. It is excreted by humans in urine and detected in municipal wastewater effluents and rivers. Fathead minnows ( Pimephales promelas) were exposed over a life cycle to measured concentrations of metformin: 3.0, 31, and 322 μg/L. No significant changes were observed in survival, maturation, growth, condition factor, or liver size. Relative ovary size of females exposed to 322 μg/L metformin was significantly larger than controls. There was no induction of vitellogenin in plasma of minnows, and gonad maturation was not statistically different from controls. The start of breeding was delayed by 9–10 d in the mid- and high metformin treatments (statistically significant only in the mid-concentration), but numbers and quality of eggs were not statistically different from controls. There were no effects of metformin on survival or growth of offspring. Exposure to metformin at environmentally relevant concentrations (i.e., 3.0 and 31 μg/L metformin) caused no adverse effects in fathead minnows exposed for a life cycle, with the exception of a delay in time to first breeding (that did not impact overall egg production). The results of the study are important to help understand whether metformin concentrations in rivers and lakes can harm fishes.

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.

Acidification effects on macroinvertebrates and fathead minnows (Pimephales promelas) in outdoor experimental channels

1983 ◽  
Vol 17 (1) ◽  
pp. 47-63 ◽  
Author(s):  
James A. Zischke ◽  
John W. Arthur ◽  
Kathleen J. Nordlie ◽  
Roger O. Hermanutz ◽  
Douglas A. Standen ◽  
...  
Keyword(s):  
Pimephales Promelas ◽  
Fathead Minnows
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