Table 5 Relatedness and sibship inferred by COLONY

From: Kin assortment in juvenile shoals in wild guppy populations

Population

 

Number of dyads

Average relatedness

Average frequency of sibship

Paria (low predation)

Within shoals

300

0.0346

0.131

 

Between shoals

2550

0.0259

0.1004

 

Difference (95% CI under H0)

NS

0.0086 (−0.0083, 0.0099)

0.0306 (−0.0316, 0.0371)

Upper Aripo (low predation)

Within shoals

320

0.0086

0.0344

 

Between shoals

6235

0.0163

0.063

 

Difference (95% CI under H0)

NS

−0.0077 (−0.0065, 0.0078)

−0.0285 (−0.025, 0.0293)

Lower Aripo (high predation)

Within shoals

384

0.0216

0.0811

 

Between shoals

4467

0.0123

0.0485

 

Difference (95% CI under H0)

*

0.0093 (−0.0055, 0.0062)

0.0327 (−0.0212, 0.024)

Arouca (high predation)

Within shoals

384

0.0203

0.0734

 

Between shoals

4467

0.0104

0.0411

 

Difference (95% CI under H0)

*

0.0099 (−0.005, 0.0058)

0.0324 (−0.0191, 0.0229)

  1. Average relatedness and average frequency of sib dyads within and between shoals for each population were calculated from sibship assignments, and the differences within and between shoals were tested by bootstrapping (significance level: *P<0.05 and NS non-significant).
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