Table 2 Summary from the linear mixed models exploring the role of social rank explaining variation in sperm design and total sperm length after manipulating the social status

Intercept

0.33 ± 0.79

102.18 ± 0.73

Rank

0.80 (3,33.4)

0.50

1.01 (3,33.4)

0.40

 Subordinate 1

−0.77 ± 1.11

−0.24 ± 1.04

 Subordinate 2

−0.58 ± 1.09

−0.48 ± 1.02

 Subordinate 3

0.77 ± 1.09

1.14 ± 1.02

Centred body mass

−0.59 ± 0.51

1.68 (1,44.3)

0.20

−0.49 ± 0.47

2.96 (1,44.3)

0.09

Centred tarsus length

1.28 ± 1.11

2.85 (1,42.6)

0.10

1.99 ± 1.04

1.74 (1,42.6)

0.19

Rank x Centred body mass

2.86 (3,42.9)

0.048

2.88 (3,42.9)

0.047

 Subordinate 1

1.11 ± 1.08

0.75 ± 1.01

 Subordinate 2

2.67 ± 0.9

2.26 ± 0.84

 Subordinate 3

1.27 ± 0.76

1.64 ± 0.71

Rank x Centred tarsus length

2.82 (3,43.2)

0.05

3.57 (3,43.2)

0.022

 Subordinate 1

−1.99 ± 1.62

−3.09 ± 1.51

 Subordinate 2

−5.23 ± 2.14

−4.47 ± 1.99

 Subordinate 3

− 4.12 ± 1.59

− 4.83 ± 1.49