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The Effect of iron oxide nanoparticles (IONPs; 15 mg/L) on mean (±SD) body and tissue weights of the fish Mozambique tilapia (Oreochromis mossambicus, Peters 1852) by groups (N=20 each)
| Parameters | IONPs (15 mg/L) | Depuration group (60 days) | ||||||
|---|---|---|---|---|---|---|---|---|
| Control | 1 day | 3 days | 4 days | 15 days | 30 days | 60 days | ||
| Body weight (g) | 6.71±0.09 | 6.25±0.40 | 6.31±0.35 | 6.51±0.26 | 6.59±0.38 | 6.47±0.38 | 6.63±0.40 | 6.99±0.13 |
| Gill weight (mg) | 143±11.9 | 146±3.25 | 152±3.88 | 152±1.19 | 159±3.20 | 161±2.98* | 172±1.41* | 186±1.50* |
| Hepatosomatic index (%) | 13.53±1.86 | 13.78±1.75 | 13.22±1.06 | 12.06±1.42 | 11.98±1.53 | 11.90±1.75* | 9.84±1.26* | 13.22±0.48 |
| Brain weight (mg) | 16.5±1.81 | 16.6±2.23 | 16.3±3.56 | 15.2±1.61 | 15.1±0.90 | 15.3±2.83 | 15.0±1.66 | 19.5±1.08 |
Mean (±SD) Bioaccumulation of iron oxide nanoparticles (IONPs; 15 mg/L) in the gill, liver, and brain tissues of the fish Mozambique tilapia (Oreochromis mossambicus, Peters 1852) exposed for 4 and 60 days, and fish followed up for 60 days after 60-day exposure had stopped (depuration period) (N=20 per group)
| Concentration of IONPs in water (mg/L) | Exposure duration | Tissues | IONP tissue concentrations (µg/mg) | BAF |
|---|---|---|---|---|
| 0 (Control) | 60 days | Gill, liver, and brain | Below detection limit | Below detection limit |
| 15 | 4 days | Gill | 0.53±.017 | 0.04 |
| Liver | 0.19±0.01 | 0.01 | ||
| Brain | 0.15±0.01 | 0.01 | ||
| 60 days | Gill | 7.87±0.26 | 0.53 | |
| Liver | 6.25±0.13 | 0.42 | ||
| Brain | 1.86±0.10 | 0.13 | ||
| Depuration (60 days) | Gill | 2.20±0.08 | 0.15 | |
| Liver | 1.90±0.08 | 0.13 | ||
| Brain | 0.92±0.13 | 0.06 |