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Table 2 The influence of contest experience on contest behaviours and its dependence on hormonal states

From: Winner and loser effects are modulated by hormonal states

  

Behaving aggressively

Winning contests

Variable

df

b ±SE

LRχ 2

P

b ±SE

LRχ 2

P

Experience

2

 

43.56

<0.001*

 

17.70

<0.001*

Win1

1

1.06 ± 0.42

6.98

0.008*

0.52 ± 0.31

2.87

0.093

Lose1

1

-1.74 ± 0.57

10.13

0.002*

-1.85 ± 0.34

6.49

0.011*

Time-decay

2

 

8.84

0.012*

 

1.66

0.437

1d2

1

-0.65 ± 0.47

2.02

0.156

0.22 ± 0.34

0.42

0.518

7d2

1

0.08 ± 0.51

0.03

0.868

0.42 ± 0.33

1.66

0.198

Exp×Time

4

 

5.55

0.236

 

7.08

0.132

Strain

4

 

5.35

0.253

 

12.69

0.013*

Pre-Cont F

1

0.13 ± 0.20

0.45

0.503

-0.06 ± 0.13

0.18

0.669

Exp×Pre-ContF

2

 

9.65

0.008*

 

1.03

0.598

Time×Pre-Cont F

2

 

4.63

0.099

 

1.95

0.378

Exp×Time×Pre-Cont F

4

 

13.85

0.008*

 

2.80

0.592

Pre-Cont T

1

0.43 ± 0.43

1.07

0.302

0.05 ± 0.34

0.02

0.880

Exp×Pre-Cont T

2

 

9.89

0.007*

 

1.73

0.421

Time×Pre-Cont T

2

 

3.33

0.190

 

5.02

0.081

Exp×Time×Pre-Cont T

4

 

11.32

0.023*

 

13.46

0.009*

Pre-Cont KT

1

1.41 ± 0.66

4.95

0.026*

1.59 ± 0.72

6.14

0.013*

Exp×Pre-Cont KT

2

 

10.60

0.005*

 

9.68

0.008*

Time×Pre-Cont KT

2

 

12.42

0.002*

 

5.76

0.056

Exp×Time×Pre-Cont KT

4

 

5.78

0.216

 

11.62

0.020*

Pre-Cont E2

1

0.03 ± 0.24

0.02

0.897

-0.05 ± 0.20

0.06

0.813

Exp×Pre-Cont E2

2

 

2.13

0.345

 

0.83

0.661

Time×Pre-Cont E2

2

 

2.87

0.239

 

2.35

0.309

Exp×Time×Pre-Cont E2

4

 

9.11

0.058

 

9.28

0.054

  1. Multiple logistic regression modelling the influence of contest experience on the probabilities of behaving aggressively and winning contests and the degree to which these influences depended on hormonal states. The focal individuals’ F, T, KT and E2 levels were correlated with each other, so, to avoid multicolinearity problems, each of the hormones (F, T, KT and E2) was tested separately. The first section of the table shows the models that tested the importance of contest experience, decay-time treatment and the interaction between them on contest behaviour, controlling for strain type. The second to the fifth sections of the table show the effects of pre-contest F, T, KT and E2, respectively, and their interactions with contest experience and time-decay treatments, with the variables in the first section included in the models. (N = 270, LRχ2: likelihood ratio χ2, *: P ≤ 0.05, Exp: Experience, Time: Time-decay, Cont: Contest).
  2. 1indicator variables, individuals with no recent experience form the baseline group.
  3. 2indicator variables, 0d decay time treatment is the baseline group.
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Frontiers in Zoology

ISSN: 1742-9994