Table 5. Regression model of eye diameter with different predictor variables when controlling for phylogeny (PGLS).

Phylogeny	n	λ	Predictor variables	β	t-value	P
Phylogeny A	58	0.939*,*	Standard length	0.925	11.927	<0.001
			Dn/Vn luminous organs	−0.012	−0.211	0.834
			Caudal luminous organs	−0.120	−1.485	0.144
			Luminous patches	0.017	0.343	0.733
			Luminous tissue sexual dimorphism	0.052	1.259	0.214
			Day depth	0.008	0.408	0.685
			Night depth	−0.013	−0.434	0.666
Phylogeny B	58	0.935*,*	Standard length	0.922	12.123	<0.001
			Dn/Vn luminous organs	−0.043	−0.717	0.477
			Caudal luminous organs	−0.197	−1.874	0.067
			Luminous patches	−0.025	−0.636	0.528
			Luminous tissue sexual dimorphism	0.047	1.178	0.244
			Day depth	0.008	0.419	0.677
			Night depth	−0.039	−1.451	0.153

The results are presented for one of the ten randomly selected polytomy resolved phylogenies for the two different phylogenies. Standard length was added as a covariate in the models. n = sample size, λ = phylogenetic scaling parameter, the superscript * after the parameter λ indicates whether the parameter was significantly different from 0 (first position) and from 1 (second position) in the likelihood tests, β = partial regression slope. The significance levels are shown in bold.