Table 1

Individual forelimb preferences in grey short-tailed opossum
Subject Sex Age Feeding on Supporting of tripedal stance Nest-material collecting
Non-living food Live insects
HI z Pref HI z Pref HI z Pref HI z Pref
1 M 34 0.20 1.19 A −0.03 0.00 A −0.15 −0.18 A −0.71 −3.94 R
2 M 21 −0.56 −3.72 R −0.68 −3.72 R −0.65 −3.95 R −0.65 −3.72 R
3 M 2 0.02 0.00 A 0.48 −2.55 R 0.20 1.11 A 0.24 1.20 A
4 M 14 0.38 2.41 L 0.48 2.55 L 0.35 2.07 L 0.65 3.72 L
5 M 17 −0.51 −3.35 R −0.35 −1.81 A −0.45 −2.73 R −0.53 −2.98 R
6 M 6 −0.33 −2.10 R 0.48 −2.55 R −0.55 −3.39 R −0.29 −1.55 A
7 M 5 −0.29 −1.80 A −0.55 −2.93 R −0.60 −3.72 R −0.35 −1.90 A
8 M 4 −0.29 −1.80 A −0.10 −0.36 A −0.30 −1.75 A 0.12 0.51 A
9 M 6 −0.38 −2.41 R −0.61 −3.32 R −0.45 −2.73 R −0.41 −2.25 R
10 M 2 −0.33 −2.10 R −0.42 −2.18 R −0.40 −2.40 R 0.24 1.20 A
11 M 3 −0.07 −0.30 A 0.03 0.00 A −0.40 −2.40 R −0.12 −0.51 A
12 M 3 −0.42 −2.72 R −0.68 −3.72 R −0.50 −3.06 R −0.76 −4.29 R
13 F 6 0.16 0.89 A −0.29 −1.44 A −0.55 −3.39 R 0.00 0.00 A
14 F 21 0.29 1.80 A 0.23 1.08 A 0.10 0.47 A −0.12 −0.51 A
15 F 21 0.11 0.60 A 0.10 0.36 A 0.40 2.40 L 0.59 3.16 L
16 F 17 −0.38 −2.41 R 0.61 3.32 L 0.70 4.27 L 0.29 1.55 A
17 F 14 −0.47 −3.02 R −0.55 −2.93 R 0.05 0.16 A −0.24 −1.20 A
18 F 14 0.33 2.10 L 0.61 3.32 L 0.35 2.07 L 0.47 2.61 L
19 F 7 0.24 1.49 A 0.35 1.81 A 0.25 1.43 A 0.06 0.17 A
20 F 7 0.33 2.10 L 0.42 2.18 L 0.50 3.06 L 0.41 2.25 L
21 F 7 0.24 1.49 A 0.48 2.55 L 0.20 1.11 A −0.47 −2.61 R
22 F 39 0.60 3.88 L 0.74 3.95 L 0.60 3.72 L 0.47 2.61 L
23 F 5 0.38 2.41 L 0.35 1.81 A 0.35 2.07 L 0.35 1.90 A
24 F 5 0.51 3.35 L 0.42 2.18 L 0.45 2.73 L 0.82 4.63 L
25 F 2 0.42 2.72 L 0.42 2.18 L 0.30 1.75 A 0.59 3.16 L
26 F 2 0.51 3.35 L 0.55 2.93 L 0.60 3.72 L 0.71 3.94 L

(HI: handedness index; z: z score, positive values indicate leftward bias, negative values indicate rightward bias; Pref: forelimb preference, L: left forelimb; R: right forelimb; A: ambipreferent. Age is given in months).

Giljov et al.

Giljov et al. BMC Evolutionary Biology 2013 13:61   doi:10.1186/1471-2148-13-61

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