Table 2.

Principal component (PC) analysis of behavioural phenotypes in HAB x LAB derived F2 mice sorted by behavioural test paradigms

Phenotype	PC 1	PC 2	PC 3	PC 4	PC 5	PC 6	PC 7
HPA-RT – stress CORT [μg/l]						−0.97
HPA-RT – increase in CORT [μg/l]						−0.96
EPM – entries to the middle open arm		−0.96
EPM – entries to the distal open arm		−0.93
EPM – time on the distal open arm [s]		−0.92
EPM – time on the middle open arm [s]		−0.78
EPM – full open arm entries		−0.77
EPM – time spent on the proximal open arm [s]					−0.91
EPM – percentage of open arm entries					−0.89
EPM – percent time on the open arm					−0.84
EPM – total time on the open arm [s]					−0.81
EPM – all open arm entries					−0.77
FST – total swimming time [s]				0.91
FST – total floating time [s]				−0.9
OF – total distance travelled [m]	−0.89
OF – mean travelling speed [m/s]	−0.88
OF – total distance in the outer zone [m]	−0.84
OF – entries to the outer zone	−0.73
OF – total time in the outer zone [s]			0.97
OF – total time in the inner zone [s]			−0.96
OF – total distance in the inner zone [m]			−0.78
OF – latency to 1st entry of the outer zone [s]			−0.77
PHYS – daily water intake per g bodyweight [ml/g*d]							−0.95
PHYS – total daily water intake [ml/d]							−0.9