Table 2.

Phylogenetic comparative analyses of the evolution of TLR copy numbers in relation to species latitudinal distributions and MHCII status using SLOUCH. (For each model, we show the phylogenetically corrected r², and the AICc score. AICc balances goodness of fit (log-likelihood) with the number of parameters in the model (model complexity). The model with the lowest AICc value is the best supported. r² represents the amount of the total variation that is explained by the model. Detailed output from each model is given in the electronic supplementary material. The model called ‘phylogeny’ in table 1 does not include any explanatory variables and is given as a reference point for comparison to models with predictor variables. The best AICc scores and corresponding r² values for each of the investigated TLR expansion are italicized.)

category	TLR8		TLR9		TLR22		TLR23		TLR25
	AICc	r2	AICc	r2	AICc	r2	AICc	r2	AICc	r2
group MHCII	259.43	19.44	239.01	22.41	427.99	14.53	328.13	2.65	231.30	26.94
group MHCII + group 75 lat.	264.37	19.52	240.39	31.`32	420.41	30.23	315.34	3.21	228.98	35.08
group MHCII + group 50 lat.	262.31	22.16	243.11	25.72	431.07	17.15	314.69	4.23	235.60	27.76
group MHCII + group 25 lat.	263.76	20.32	239.13	32.69	431.69	16.32	311.21	9.41	234.82	28.67
group MHCII + group 0 lat.	261.00	27.11	228.48	53.53	430.16	18.36	314.90	3.92	233.63	30.02
group MHCII + group −25 lat.	263.37	20.82	230.06	52.33	432.07	15.80	313.49	6.01	234.84	28.64
group MHCII + group −50 lat.	264.39	19.50	240.15	29.17	432.19	15.63	314.92	3.81	235.60	27.76