TABLE 1.
Summary of the Arctic charr measurements: number of individuals (n), sex (number of males/females), mean body length (±SD), mean of number of lamellae (±SD), mean of the absolute size of olfactory organ area (±SD), and mean of the absolute brain region volume (±SD) measured from four Arctic charr morph in Lake Tinnsjøen
| Morph | n | Sex | Body length (mm) | Number of lamellae | Olfactory organ area (mm2) | Olfactory bulb (mm3) | Telencephalon (mm3) | Optic tectum (mm3) | Cerebellum (mm3) | Hypothalamus (mm3) |
|---|---|---|---|---|---|---|---|---|---|---|
| Abyssal | 12 | 6/6 | 78.58 ± 10.66 | 5.67 ± 1.07 | 0.31 ± 0.12 | 0.10 ± 0.04 | 0.37 ± 0.16 | 0.78 ± 0.23 | 0.72 ± 0.30 | 0.17 ± 0.07 |
| Dwarf | 22 | 12/10 | 113.82 ± 21.50 | 10.45 ± 1.37 | 0.89 ± 0.27 | 0.24 ± 0.06 | 0.91 ± 0.37 | 3.32 ± 1.24 | 2.33 ± 1.00 | 0.48 ± 0.16 |
| Piscivore | 16 | 10/6 | 217.38 ± 92.96 | 12.75 ± 0.93 | 2.11 ± 1.30 | 0.74 ± 0.70 | 3.20 ± 3.07 | 11.31 ± 9.35 | 7.77 ± 6.96 | 1.28 ± 1.13 |
| Planktivore | 22 | 10/12 | 180.36 ± 67.42 | 11.41 ± 1.53 | 1.49 ± 0.64 | 0.54 ± 0.62 | 1.52 ± 1.10 | 10.14 ± 7.56 | 6.40 ± 4.90 | 0.86 ± 0.43 |