Table 1 Results from the GLMMs investigating second-order alliance member choice and first-order partner preferences.

From: Cooperative partner choice in multi-level male dolphin alliances

 

Exp(Β)

2.5%

97.5%

p-value

Second-order

First-order

Second-order

First-order

Second-order

First-order

Second-order

First-order

Intercept

1.34e−5

6.39e−3

4.60e−7

2.88e−3

3.88e−4

1.42e−2

< 0.0001

< 0.0001

Bond strengtha

1.12e58

1.23e5

8.19e41

6.77e4

1.53e74

2.23e5

< 0.0001

< 0.0001

ΔAge

5.48

1.09

1.39

0.878

21.54

1.35

0.015

0.266

Relatedness

3.08e−6

2.82

1.13e−13

0.45

83.92

17.5

0.146

0.435

ΔAgebBond strength

2.53e−16

n.a

1.08e−27

n.a

5.98e−5

n.a

0.007

n.a

  1. Exponentiated fixed effects (Exp(B)) representing odds ratios, lower and upper confidence bounds (2.5% and 97.5%) and p-values of second-order GLMM and first-order GLMM investigating the effect of pairwise relatedness, age similarity, and SRI on choices of first-order partners and second-order members.
  2. aSRI during the focal male’s adolescence for the model concerning second-order alliances, non-mating season SRI between males for first-order alliance partner choice.
  3. AgebBond strength denotes the interaction term between age difference and adolescence social bond strength on the level of second-order alliance member choice. Values in bold denote statistical significance (p < 0.05).
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