Table 1.

Feeding rate of the (a) eight European genotypes and (b) 10 Scottish genotypes was analysed using mixed models. Significance of each effect was assessed using likelihood-ratio tests (the likelihood-ratio test statistic, which is twice the difference in the log likelihoods of the models, follows the χ² distribution). (c) Filter screen area was analysed with a linear model.

response	effect	d.f.	F	χ2	p
(a) feeding rate	maternal food			6.26	0.01
	body length			17.50	<0.001
	maternal food × body length			0.00	0.50
	genotype × body length			1.10	0.15
	genotype × maternal food			0.69	0.20
(b) feeding rate	maternal food			4.04	0.02
(c) filter screen area	maternal food	1, 41	5.62		0.023
	square (body length)	1, 41	8.67		0.005