Field studies of reproductive success and bioindicators of maternal contaminant exposure in English sole (Parophrys vetulus)

1992 ◽  
Vol 116 (1-2) ◽  
pp. 169-185 ◽  
Author(s):  
Tracy K. Collier ◽  
John E. Stein ◽  
Herbert R. Sanborn ◽  
Tom Hom ◽  
Mark S. Myers ◽  
...  
1988 ◽  
Vol 11 (3-4) ◽  
pp. 435-436 ◽  
Author(s):  
L.L. Johnson ◽  
E. Casillas ◽  
D. Misitano ◽  
B.B. McCain ◽  
M.S. Myers ◽  
...  

1993 ◽  
Vol 35 (1-2) ◽  
pp. 171-175 ◽  
Author(s):  
Tracy K. Collier ◽  
John E. Stein ◽  
Herbert R. Sanborn ◽  
Tom Hom ◽  
Mark S. Myers ◽  
...  

1985 ◽  
Vol 42 (12) ◽  
pp. 1870-1880 ◽  
Author(s):  
Linda Rhodes ◽  
Edmundo Casillas ◽  
Barbara McKnight ◽  
William Gronlund ◽  
Mark Myers ◽  
...  

Investigation of the interactive effects of representatives of three classes of compounds was performed, using English sole (Parophrys vetulus) as the test organism, juvenile fish were exposed orally to cadmium chloride and Aroclor 1254 (PCB), either independently or simultaneously, for a 4-wk period, followed by exposure to seawater-accommodated No. 2 diesel fuel for 2 wk. Blood was collected for analysis of serum constituents, and tissue samples were examined for histological changes. Hepatocellular necrosis, regeneration, and karyomegaly were observed. Differential lesion prevalences were observed among the exposure groups, with high proportions among cadmium-exposed fish, low proportions among PCB-exposed fish, and intermediate proportions in combination cadmium- plus PCB-exposed fish. Levels of aspartate aminotransferase activity and magnesium in the sera of these groups exhibited similar patterns. Depressed serum calcium levels in both PCB-exposed and cadmium- plus PCB-exposed groups were found after the first week, and lower serum albumin concentrations occurred in all cadmium- and PCB-exposed groups following the third week. Subsequent exposure to No. 2 diesel fuel produced few effects in any of the exposure groups. The observed antagonistic effect of Aroclor 1254 against cadmium toxicity emphasizes the importance of employing multiple as well as single contaminant exposure in toxicity studies.


1991 ◽  
Vol 31 (2) ◽  
pp. 99-122 ◽  
Author(s):  
Edmundo Casillas ◽  
David Misitano ◽  
Lyndal L Johnson ◽  
Linda D Rhodes ◽  
Tracy K Collier ◽  
...  

1988 ◽  
Vol 45 (12) ◽  
pp. 2133-2146 ◽  
Author(s):  
Lyndal L. Johnson ◽  
Edmundo Casillas ◽  
Tracy K. Collier ◽  
Bruce B. McCain ◽  
Usha Varanasi

In a study evaluating the effects of exposure to xenobiotic compounds on ovarian development in English sole (Parophrys vetulus), prespawning females were sampled from four sites in Puget Sound, Washington, during the 1986 and 1987 spawning seasons. Two sampling sites had high concentrations of xenobiotic compounds in the sediment, while the other sites were less contaminated. The following factors associated with ovarian maturation were measured: ovarian developmental stage, ovarian atresia, gonadosomatic index, plasma estradiol, and plasma vitellogenin as estimated from alkali-labile phosphorus. Contaminant exposure was assessed by measuring concentrations of fluorescent aromatic compounds in the bile, hepatic aryl hydrocarbon hydroxylase (AHH) activity, and hepatic polychlorinated biphenyl levels, and liver tissue was examined histologically for the presence of suspected toxicopathic lesions. Female English sole from the heavily contaminated sites were significantly less likely to undergo gonadal recrudescence and had lower mean levels of plasma estradiol than females from the less contaminated sites. The risk of inhibited gonadal recrudescence was significantly increased in sole with elevated hepatic AHH activity, and AHH activity was also significantly negatively correlated with plasma estradiol level. These findings suggest that contaminant exposure may interfere with ovarian development in female English sole.


1989 ◽  
Vol 69 (2-3) ◽  
pp. 203-216 ◽  
Author(s):  
Usha Varanasi ◽  
William L. Reichert ◽  
Bich-Thuy Le Eberhart ◽  
John E. Stein

Author(s):  
Ellen H. Jung ◽  
Junho Eom ◽  
Colin J. Brauner ◽  
Fernando Martinez-Ferreras ◽  
Chris M. Wood

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