Thermal plasticity in farmed, wild and hybrid Atlantic salmon during early development: has domestication caused divergence in low temperature tolerance?

Table 2 Pair-wise comparisons of estimated body weight between strains within each treatment, and their relative weight

		Farm1 (F1)			Farm2 (F2)			Figgjo x Farm1			Farm2 x Vosso			Figgjo (F)			Vosso (V)			Arna (A)			Driva (D)			Skibotn (S)
Temp (° C)		12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9	12	5.6	3.9
Est. W (g)		34.2	1.27	0.62	27.5	0.97	0.52	22.4	1.14	0.58	21.9	1.05	0.52	14.2	1.05	0.59	19.3	0.95	0.50	15.3	0.99	0.54	10.6	0.69	0.36	15.1	0.76	0.45
F1		-	-	-		**		**			**	*		***	*		***	***		***	**		***	***	***	***	***	*
F2	1:	1.24	1.31	1.18	-	-	-							***			*			***			***	***	*	***	*
F x F1	1:	1.52	1.12	1.06	1.23	0.85	0.90	-	-	-				**				*		**			***	***	**	**	***
F2 x V	1:	1.56	1.21	1.19	1.26	0.92	1.01	1.03	1.08	1.12	-	-	-	**						*			***	***	*	**	***
F	1:	2.40	1.21	1.05	1.93	0.92	0.89	1.58	1.08	1.00	1.54	1.00	0.89	-	-	-	*							***	**		***
V	1:	1.77	1.35	1.24	1.43	1.03	1.05	1.17	1.20	1.17	1.14	1.11	1.04	0.74	1.11	1.17	-	-	-				***	**	*		*
A	1:	2.24	1.28	1.15	1.80	0.98	0.97	1.47	1.14	1.08	1.43	1.06	0.96	0.93	1.06	1.09	1.26	0.95	0.93	-	-	-	*	***	*		**
D	1:	3.23	1.85	1.71	2.60	1.41	1.45	2.12	1.65	1.61	2.07	1.53	1.44	1.35	1.53	1.62	1.82	1.37	1.38	1.45	1.44	1.49	-	-	-	*
S	1:	2.27	1.67	1.36	1.83	1.27	1.16	1.49	1.49	1.29	1.45	1.38	1.15	0.94	1.38	1.29	1.28	1.24	1.10	1.01	1.30	1.19	0.70	0.90	0.80	-	-	-

Upper triangular illustrates the P-values, * = P < 0.05, ** = P < 0.01, *** = P < 0.001, of the pair-wise comparisons of estimated weight of strains within each temperature treatments, i.e., differences in least squares means, as retrieved from the output of the linear mixed effect model 2 (Additional file 1). Lower triangular shows the relative difference, i.e., ratio, in estimated weight of strains within each treatment. Significant results are marked in bold

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