Table 2 Toxicological pattern observed Danio rerio embryos after 96-h exposure to surface sediments from Gulf of Bothnia (fraction ≤ 63 µm)
Endpoints | Kramfors | Örnsköldsvik | Sundsvall |
|---|---|---|---|
Lethality | Comparable with control | Comparable with control | Comparable with control |
Body malformations | Bended spine | Comparable with control | Comparable with control |
Heartbeat | Decrease (p ≤ 0.01) | Decrease (p ≤ 0.01) | Decrease (p ≤ 0.01) |
Movements increase | L1 (2.7-fold increase) and L2 (3.1-fold increase) | D1, 2 and L2 (1.4-, 2.3-, and 1.8-fold increase) | L1, D2, and L2 (2.4-, 2.6- and 3.7-fold increase) |
Movements decrease | D1 (0.4-fold decrease) | Comparable with control | Comparable with control |
AChE inhibition | Comparable with control | Comparable with control | Comparable with control |
Hatching | Retarded at 72 hpf (p ≤ 0.01) | Comparable with control | Comparable with control |