Table 2 LMMs investigating how experimentally changing the social status affects the within-ejaculate variation in sperm design or in total sperm length

Random effects

Estimates ± SE

Z

P

 Aviary

0

0

1

 Sampling date

0

0

1

Fixed effects

F

df

P

 Intercept

-0.16 ± 1.19

 Initial status^a

0.19

3, 39

0.90

  Dominant

0.15 ± 0.16

  Subordinate-1

0.097 ± 0.178

  Subordinate-2

0.079 ± 0.144

 Final status^a

0.70

3, 39

0.56

  Dominant

0.181 ± 0.191

  Subordinate-1

0.011 ± 0.139

  Subordinate-2

-0.048 ± 0.156

 Body mass

-0.013 ± 0.026

0.10

1, 39

0.75

 Tarsus length

0.056 ± 0.052

1.16

1, 39

0.29

 Initial status x Final status^b

0.33

9, 39

0.96

  Dominant x dominant

-0.274 ± 0.243

  Dominant x subordinate-1

-0.150 ± 0.247

  Dominant x subordinate-2

-0.006 ± 0.252

  Subordinate-1 x dominant

-0.104 ± 0.290

  Subordinate-1 x subordinate-1

-0.109 ± 0.238

  Subordinate-1 x subordinate-2

-0.134 ± 0.241

  Subordinate-2 x dominant

-0.133 ± 0.247

  Subordinate-2 x subordinate-1

-0.075 ± 0.216

  Subordinate-2 x subordinate-2

0.018 ± 0.228

Random effects

Estimates ± SE

Z

P

 Aviary

0

0

1

 Sampling date

0

0

1

Fixed effects

F

df

P

 Intercept

3.548 ± 2.802

 Initial status^a

0.16

3, 39

0.92

  Dominant

-0.310 ± 0.375

  Subordinate-1

-0.517 ± 0.421

  Subordinate-2

-0.091 ± 0.339

 Final status^a

0.63

3, 39

0.60

  Dominant

-0.204 ± 0.452

  Subordinate-1

-0.253 ± 0.329

  Subordinate-2

-0.643 ± 0.369

 Body mass

-0.020 ± 0.062

0.10

1, 39

0.75

 Tarsus length

-0.051 ± 0.122

0.17

1, 39

0.68

 Initial status x Final status^b

0.86

9, 39

0.57

  Dominant x dominant

0.044 ± 0.574

  Dominant x subordinate-1

0.217 ± 0.583

  Dominant x subordinate-2

0.860 ± 0.594

  Subordinate-1 x dominant

0.271 ± 0.686

  Subordinate-1 x subordinate-1

0.304 ± 0.561

  Subordinate-1 x subordinate-2

1.054 ± 0.569

  Subordinate-2 x dominant

0.244 ± 0.583

  Subordinate-2 x subordinate-1

-0.246 ± 0.509

  Subordinate-2 x subordinate-2

0.132 ± 0.538