376
L. Pellerito . R. Barbieri· R. Di Stefano . M. Scopelliti . C. Pellerito . T. Fiore . F. Triolo
a
b
,
~_ I
c
d
Fig. 15.33. Nile tilapia gills of control and TPTH-treated groups after one month of exposure; a control
(water), showing normal appearance of gill filament (F) and lamellae (L). Note stratified squamous
epithelium covering gill filaments and thin single-layer epithelium of gill lamellae (200X); b control
(0.0015% DMSO), showing normal gills (200X); c treated with 1 mg I-I TPTH, showing slightly thickened epithelium of filament (arrowhead) (400X); d treated with 3 mg rl TPTH, showing slightly thickened epithelium of filament (arrowhead) (400X), adapted from Visoottiviseth et al. (1999)
From the reported data it was possible to conclude that bottlenose dolphins have
lower butyltin concentrations than striped dolphins, while the fetus had a higher concentration in the liver, suggesting that butyltins were transferred from mother to fetus.
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