Table 1 Tooth and cusp numbers in the rostral and caudal regions of the mandible for different morphs of the Mexican tetra
From: Adaptive evolution of the lower jaw dentition in Mexican tetra (Astyanax mexicanus)
| Group | SL (cm) | Total tooth number | Rostral cusp number | Caudal tooth number | Caudal cusp number | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 cusps | 5 cusps | 6 cusps | 7 cusps | 8 cusps | 1 cusps | 2 cusps | 3 cusps | 4 cusps | 5 cusps | 6 cusps | 7 cusps | ||||
| C-1 | 5.7 | 7 | 3 | 1 | 5 | 1 | 1 | 1 | |||||||
| C-2 | 4.7 | 9 | 1 | 3 | 5 | 2 | 1 | 1 | 1 | ||||||
| C-3 | 4.7 | 7 | 4 | 3 | 2 | 1 | |||||||||
| C-4 | 5.3 | 6 | 4 | 2 | 1 | 1 | |||||||||
| C-5 | 5.5 | 6 | 4 | 2 | 1 | 1 | |||||||||
| C-6 | 5.7 | 9 | 4 | 5 | 4 | 1 | |||||||||
| C-7 | 4.6 | 9 | 4 | 5 | 2 | 3 | |||||||||
| C-8 | 4.0 | 10 | 4 | 6 | 1 | 2 | 2 | 1 | |||||||
| Average number of teeth | 7.88 ± 1.55 | 3.88 ± 1.55 | |||||||||||||
| Average cusp/tooth | 4.04 | 2.87 | |||||||||||||
| S-1 | 3.7 | 7 | 2 | 3 | 2 | 1 | |||||||||
| S-2 | 4.1 | 7 | 4 | 3 | 2 | 1 | |||||||||
| S-3 | 4.3 | 7 | 4 | 3 | 1 | 2 | |||||||||
| S-4 | 3.6 | 7 | 4 | 3 | 1 | 2 | |||||||||
| S-5 | 3.7 | 9 | 4 | 5 | 3 | 2 | |||||||||
| Average number of teeth | 7.4 ± 0.89 | 3.4 ± 0.89 | |||||||||||||
| Average cusp/tooth | 4.26 | 3.29 | |||||||||||||
| Non Sx-1 | 3.7 | 4 | 4 | 0 | |||||||||||
| Non Sx-2 | 4.1 | 6 | 4 | 2 | 1 | 1 | |||||||||
| Non Sx-3 | 4.3 | 6 | 4 | 2 | 1 | 1 | |||||||||
| Non Sx-4 | 3.6 | 7 | 4 | 3 | 1 | 1 | |||||||||
| Non Sx-5 | 3.7 | 8 | 4 | 4 | 2 | 1 | |||||||||
| Average number of teeth | 6.2 ± 1.48 | 2.2 ± 1.48 | |||||||||||||
| Average cusp/tooth | 4.84 | 3.29 | |||||||||||||
| T-1 | 3.7 | 11 | 1 | 1 | 2 | 7 | 2 | 3 | 1 | 1 | |||||
| T-2 | 4.7 | 12 | 3 | 1 | 8 | 1 | 1 | 4 | 1 | 1 | |||||
| T-3 | 4.7 | 13 | 2 | 2 | 9 | 1 | 2 | 4 | 2 | ||||||
| T-4 | 4.0 | 10 | 3 | 1 | 6 | 1 | 1 | 2 | 1 | 1 | |||||
| T-5 | 5.0 | 14 | 3 | 1 | 10 | 4 | 4 | 1 | 1 | ||||||
| T-6 | 7.1 | 14 | 2 | 2 | 10 | 1 | 4 | 1 | 2 | 2 | |||||
| T-7 | 4.4 | 8 | 1 | 2 | 1 | 4 | 1 | 1 | 1 | ||||||
| T-8 | 4.2 | 11 | 2 | 1 | 1 | 7 | 2 | 4 | 1 | ||||||
| Average number of teeth | 11.62 ± 2.06 | 7.62 ± 2.06 | |||||||||||||
| Average cusp/tooth | 4.16 | 3.18 | |||||||||||||
| I-1 | 4.9 | 10 | 3 | 1 | 6 | 1 | 2 | 2 | 1 | ||||||
| I-2 | 5.7 | 12 | 1 | 3 | 8 | 1 | 4 | 1 | 1 | 1 | |||||
| I-3 | 5.8 | 13 | 3 | 1 | 9 | 1 | 5 | 3 | |||||||
| I-4 | 5.2 | 8 | 4 | 4 | 1 | 1 | 1 | 1 | |||||||
| I-5 | 5.4 | 11 | 1 | 2 | 1 | 7 | 1 | 4 | 2 | ||||||
| I-6 | 5.2 | 10 | 4 | 6 | 3 | 1 | 2 | ||||||||
| Average number of teeth | 10.67 ± 1.75 | 6.67 ± 1.75 | |||||||||||||
| Average cusp/tooth | 4.56 | 3.55 | |||||||||||||