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<br />406
<br />
<br />COUGHLAN AND VELTE
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<br />
<br />FIGURE 6.-Histology of striped bass trunk kidney (a) from a control fish and (b) from a fish fed selenium-laden
<br />red shiners. G = glomerulus; PT = first proximal tubule; DT = degenerate tubules; RC = renal casts occluding
<br />lumens; L = lymphocytic infiltration; bars = 20 JLm. The damage shown in (b) was the most severe obServed.
<br />
<br />dition to glomerular abnormalities, such as cap-
<br />illary loop coIIapse and occlusion, proliferative
<br />glomerulonephritis, hematuria, and periglomeru-
<br />lar fibrosis (Sorensen et al. 1982, 1984). BIuegiIIs
<br />fed selenium-contaminated mayfly nymphs (13.6
<br />#Lg Se/g wet weight) from Belews Lake exhibited
<br />renal damage (Finley 1985) similar to that in green
<br />
<br />sunfish found naturaIIy in Belews Lake (Sorensen
<br />et al. 1984), Rainbow trout fed excessive selenium
<br />(11.4 #Lglg diet, as sodium selenite) in a laboratory
<br />study experienced mortality and renal tubule
<br />damage (Hicks et al. 1984); dilated tubules, ne-
<br />crotic and desquamated tubule epithelia, and re-
<br />nal casts of calcium were observed from the con-
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<br />thank.
<br />
<br />Power
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<br />V1ces; ;
<br />script.
<br />
<br />AOAC
<br />19
<br />AC
<br />Bennett
<br />19'
<br />de<
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