Table 1.

Overview of QTL families

Family	N	Body weight (g)		Lice abundance (fish-1)		Corr.
		range	mean (sd)	range	mean (sd)
Family 3	73	142–1010	513.0 (162.8)	4–31	19.6 (5.4)	0.42**
Family 4	109	112–874	445.7 (148.6)	7–38	19.4 (5.8)	0.20*
Family 6	112	228–654	447.4 (91.6)	7–32	18.6 (5.4)	0.20*

Notes. Corr.: Pearson's correlation coefficient between body weight and lice abundance (* p < 0.05, ** p < 0.001); distribution plots of lice abundance in each family are provided in Additional file 1.