Ultrastructure of the Metacercarial Cyst of Ornithodiplostomum ptychocheilus (Trematoda: Diplostomatidae) from the Brains of Fathead Minnows

1982 ◽  
Vol 101 (2) ◽  
pp. 181 ◽  
Author(s):  
Frederick W. So ◽  
Darwin D. Wittrock
Keyword(s):  
Fathead Minnows ◽  
Metacercarial Cyst

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.

Dynamics of isopropylphenyl diphenyl phosphate in fathead minnows

Chemosphere ◽  
1983 ◽  
Vol 12 (6) ◽  
pp. 799-807 ◽  
Author(s):  
James N. Huckins ◽  
Jimmie D. Petty
Keyword(s):  
Fathead Minnows ◽  
Diphenyl Phosphate

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

scholarly journals A Computational Model of the Hypothalamic-Pituitary-Gonadal Axis in Male Fathead Minnows Exposed to 17α-Ethinylestradiol and 17β-Estradiol

2009 ◽  
Vol 109 (2) ◽  
pp. 180-192 ◽  
Author(s):  
Karen H. Watanabe ◽  
Zhenhong Li ◽  
Kevin J. Kroll ◽  
Daniel L. Villeneuve ◽  
Natàlia Garcia-Reyero ◽  
...  
Keyword(s):  
Computational Model ◽  
Fathead Minnows ◽  
17Β Estradiol

Impairment of the reproductive potential of male fathead minnows by environmentally relevant exposures to 4-nonylphenolf

2008 ◽  
Vol 86 (1) ◽  
pp. 91-98 ◽  
Author(s):  
H.L. Schoenfuss ◽  
S.E. Bartell ◽  
T.B. Bistodeau ◽  
R.A. Cediel ◽  
K.J. Grove ◽  
...  
Keyword(s):  
Reproductive Potential ◽  
Fathead Minnows
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