Table 1. Correlation between male F_is (♂F_is), F_st between sexes (♂–♀F_st) and X–Y differentiation (X–Y dif.) at sex-linked loci.

♂F_is was also adjusted by F_is at autosomal loci (auto. F_is) and F_is at sex-linked loci in female (♀F_is).

	H. arborea			R. temporaria
	N	R2	P	N	R2	P
♂Fis  vs. ♂–♀Fst	14	0.86	<0.001	10	0.82	<0.001
♂Fis (adjusted by auto. Fis) vs. ♂–♀Fst	14	0.86	<0.001	–	–	–
♂Fis (adjusted by ♀Fis) vs. ♂–♀Fst	14	0.70	<0.001	10	0.90	<0.001
♂–♀Fstvs. X–Y dif.	14	0.71	<0.001	–	–	–
♂Fis  vs. X–Y dif.	28	0.75	<0.001	–	–	–
♂Fis (adjusted by auto. Fis) vs. X–Y dif.	27	0.70	<0.001	–	–	–
♂Fis (adjusted by ♀Fis) vs. X–Y dif.	14	0.43	0.010	–	–	–

Notes.

Abbreviations

N

number of populations

R²

fit of linear regression

P

p-value of linear regressions