Summary of the Immobility Times for F0, F1, and F2 Mice
| Strain/Cross | Sex | Immobility time, seconds ± sd (n) | |||
| Forced swim test (FST) | Tail suspension test (TST) | ||||
| C57BL/6 (B6) | male | 206 ± 32 (19)[ii] | 211 ± 46 (8)* | ||
| DBA/2 | male | 124 ± 30 (20) | 122 ± 66 (6) | ||
| BALB/c | male | 144 ± 21 (22) | 88 ± 66 (8) | ||
| C3H/He (C3) | male | 103 ± 15 (20)[ii] | 68 ± 28 (8)* | ||
| C57BL/6 (B6) | male | 194 ± 44 (63) | 243 ± 72 (62) | ||
| female | 181 ± 46 (63) | 212 ± 86 (60) | |||
| C3H/He (C3) | male | 103 ± 20 (63) | 64 ± 51 (60) | ||
| female | 114 ± 25 (61) | 60 ± 70 (61) | |||
| F1 (B6 × C3) | male | 158 ± 30 (63) | 162 ± 77 (63) | ||
| female | 162 ± 30 (63) | 184 ± 69 (61) | |||
| F2 | male | 151 ± 41 (260) | 181 ± 98 (260) | ||
| female | 161 ± 43 (300) | 188 ± 103 (300) | |||
| F2 total | 156 ± 42 (560) | 185 ± 101 (560) | |||
[i] In each animal strain or cross, age did not influence immobility times in the FST and TST between the ages of 8 and 11 weeks. All the data in this table were obtained from 8- or 9-week-old animals. sd, standard deviation; n, number of animals; B6, C57BL/6; C3, C3H/He.
[ii] Significantly different (P < 0.001) between B6 and C3 strains by Bonferroni/Dunn test.