Table 1.
Composition of the South American sea lion group housed at the Oceanogràfic aquarium during the period of data collection.
| Subjects | Code | Sex | Age | NDSvalues | Mean (Nº of Ys/h) | Y duration (seconds) (mean ± SE) |
|---|---|---|---|---|---|---|
| Alvin | 1 | ♂ | 13 yr | 9.46 | 3.53 | 5.43 ± 0.24 |
| Patrick | 2 | ♂ | 4 yr | 8.00 | 3.49 | 3.72 ± 0.15 |
| Demmy | 3 | ♀ | 13 yr | 5.62 | 1.70 | 4.31 ± 0.47 |
| Laura | 4 | ♀ | 13 yr | 6.13 | 2.51 | 5.31 ± 0.33 |
| Selkie | 5 | ♀ | 13 yr | 5.99 | 3.00 | 4.40 ± 0.20 |
| Ambar | 6 | ♀ | 13 yr | 5.76 | 3.14 | 4.66 ± 0.22 |
| Morena | 7 | ♀ | 13 yr | 6.10 | 3.62 | 5.64 ± 0.46 |
| Janis | 8 | ♀ | 4 yr | 5.83 | 2.11 | 3.61 ± 0.40 |
| Portos | 9 | ♂ | 3 yr | 3.76 | 2.43 | 3.24 ± 0.23 |
| Nora | 10 | ♀ | 3 yr | 3.99 | 2.89 | 4.00 ± 0.18 |
| Ana | 11 | ♀ | 13 yr | 4.87 | 2.77 | 4.68 ± 0.29 |
| Naima | 12 | ♀ | 13 yr | 5.36 | 4.00 | 3.83 ± 0.14 |
| Noa | 13 | ♀ | 13 yr | 7.14 | 2.10 | 4.77 ± 0.53 |
NDS = Normalized David’s Scores; yr = years; Y = Yawn.