Table 1

Generalized linear mixed model investigating variation in female mate preferences.

Factors

d.f.

F

P


Female group

2, 130

0.450

0.639

Stimulus group

2, 130

2.108

0.126

Male wing length

1, 130

0.012

0.915

Male tarsus length

1, 130

0.227

0.635

Male body mass

1, 130

0.042

0.838

Male badge size

1, 130

0.274

0.601

Stimulus individual heterozygosity

1, 130

0.040

0.842

Female group × Stimulus group

4, 130

3.824

0.006

Female group × Stimulus individual heterozygosity

2, 130

0.121

0.886

Female group × Male badge size

2, 130

0.489

0.614


Fixed effects were female group (High, Intermediate and Low number of MHC alleles) and stimulus group (Males with High, Intermediate, Low number of alleles, and the control group). Male wing length, tarsus length, body mass, badge size and heterozygosity were entered into the model as covariates. We fitted the female individual identity as a random factor (F 1,130 = 0.031, P = 0.86) to control for the non-independence of the data. Significant F and P-values are shown in bold.

Griggio et al. BMC Evolutionary Biology 2011 11:44   doi:10.1186/1471-2148-11-44

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