Table 1.

Family and diet effects on male chirp rate in G. lineaticeps. Data were analysed using a linear mixed model. Chirp duration (mean) is the among-family effect of chirp duration. Chirp duration (deviation) is the within-family effect of chirp duration. The fixed effects were tested using Wald tests. The random effect was tested using a likelihood ratio test that compared models with and without the random effect. Regression coefficients are presented for the fixed effects, while variance component estimates are presented for the random effect and error terms.

fixed effects	coefficient	s.e.		p
chirp duration (mean)	−44.349	14.874	8.89	0.003
chirp duration (deviation)	−16.345	3.300	25.62	<0.001
adult diet	−1.577	0.823	3.67	0.055
duration (mean) × adult diet	17.478	1.428	4.14	0.042
random effect and error	estimate	s.e.		p
male family	0.068	0.030	17.21	<0.001
error	0.249	0.028