Table 1.
The configuration of treatment groups and lead doses in diet of fish during the 12 months exposure period and the following 12 months exposure or depuration period
| Groups | 1–control | 2 | 2-dep | 3 | 3-dep | 4 | 4-dep | 5 | 5-dep | total |
|---|---|---|---|---|---|---|---|---|---|---|
| Pb dose in diet (mg kg−1) during the first 12 months period | 0.1 | 8 | 13 | 24 | 49 | - | ||||
| Number of fish at the beginning [n] (per aquarium) | 30/30 | 30/30/30 | 30/30/30 | 30/30/30 | 30/30/30 | 420 | ||||
| Number of fish after 3 months [n] | 26/26 | 28/27/27 | 28/27/27 | 28/27/27 | 28/27/27 | 380 | ||||
| Number of fish after 6 months [n] | 20/20 | 24/25/24 | 25/25/24 | 25/25/24 | 25/25/24 | 335 | ||||
| Number of fish after 12 months exposure | 14/14 | 13/14 | 15/15 | 14/14 | 15/14 | 14/14 | 15/15 | 13/14 | 15/15 | 257 |
| Pb dose in diet [mg kg−1] during the second 12 months period | 0.1 | 8 | 0.1 | 13 | 0.1 | 24 | 0.1 | 49 | 0.1 | – |
| Number of fish after 15 months [n] | 10/10 | 9/10 | 11/11 | 10/10 | 11/10 | 10/10 | 10/11 | 9/10 | 11/11 | 184 |
| Number of fish after 18 months [n] | 5/4 | 5/5 | 5/5 | 5/5 | 6/5 | 5/5 | 4/5 | 5/5 | 5/4 | 88 |